https://global.kikusui.co.jp/

Electrical Safety Analyzer

New FlagshipElectrical Safety Multi-analyzer

TOS9300 Series

All-in-one safety tester model (TOS9303LC)
Insulation diagnosis available with partial discharge model (TOS9301PD ˂ NEW˃)New amplifier type allows for 40 A AC/DC ground bond testing (Ground bond tester models)Electrical breakdown inspection setting available
AC5 kV/100 mA, DC7.2 kV/100 W Hipot test
Touch current/protective conductor current/leakage current test (TOS9303LC)
LAN/USB/RS232C standard digital interface
Easy to read LCD display for real time monitoring during tests
All measurement values and standard outlines displayed in each test
High voltage scanner capable of output distribution both standalone and when connected with existing
withstanding voltage/insulation resistance testing equipment models [TOS5300 series, etc.] (TOS9320)

THE ALL-ROUND
Hipot, Insulation Resistance, Ground Bond, Leakage or Partial
Discharge, this analyzer covers it all!

TOS9300 Series Lineup

TOS9300

TOS9301

TOS9301PD

AC Hipot Tester with 		Insulation Resistance Test

AC/DC Hipot Tester with 		Insulation Resistance Test

AC/DC Hipot Tester with Insulation
Resistance and Partial Discharge Test

ACW
IR

5 kV/100 mA(500 VA)
0.001 MΩ to 100.0 GΩ (DC-25 V to -1000 V)
LAN

Rise Time Fall TimeUSB

RS232C

Timer

ACW
DCW
IR

ACW
DCW
IR
PD

5 kV/100 mA(500 VA)
5 kV/20 mA, 7.2 kV/13.9 mA(100 W)
0.001 MΩ to 100.0 GΩ (DC-25 V to -1000 V/DC+50 V to +7200 V)

Rise Time Fall Time

USB

LAN

RS232CTimer

5 kV/100 mA(500 VA)
5 kV/20 mA, 7.2 kV/13.9 mA(100 W)
0.001 MΩ to 100.0 GΩ (DC-25 V to -1000 V/DC+50 V to +7200 V)
5 kV/50 mA(250 VA)
LAN

Rise Time Fall TimeUSB

RS232C

Timer

D 430(16.93")(440(17.32"))W×132(5.2")(155(6.10"))H×

D 430(16.93")(440(17.32"))W×132(5.2")(155(6.10"))H×

D 430(16.93")(440(17.32"))W×132(5.2")(150(5.9"))H×

370(14.57")(410(16.14"))Dmm(inch)
W Approx.17 kg(37.5 lbs)

370(14.57")(410(16.14"))Dmm(inch)
W Approx.18 kg(39.7 lbs)

W Approx.22 kg(48.5 lbs)

TOS9302

TOS9303

TOS9303LC

AC Hipot Tester with Ground Bond Test

AC/DC Hipot Tester with Insulation
Resistance and Ground Bond Test

AC/DC Hipot Tester with Insulation Resistance,
Ground Bond, and Leakage Current Test

ACW
EC

5 kV/100 mA(500 VA)
0.001 Ω to 0.600 Ω (3.0 A to 42.0 A)
LAN

Rise Time Fall TimeUSB

RS232C

Timer

ACW
DCW
IR
EC

525(20.67")(565(22.24"))Dmm(inch)

5 kV/100 mA(500 VA)
5 kV/20 mA, 7.2 kV/13.9 mA(100 W)
0.001 MΩ to 100.0 GΩ (DC-25 V to -1000 V/DC+50 V to +7200 V)
0.001 Ω to 0.600 Ω (3.0 A to 42.0 A)

Rise Time Fall Time

LAN

USB

RS232C

ACW
DCW
IR
EC
LC

Timer

5 kV/100 mA(500 VA)
5 kV/20 mA, 7.2k V/13.9 mA(100 W)
0.001 MΩ to 100.0 GΩ (DC-25 V to -1000 V/DC+50 V to +7200 V)
0.001 Ω to 0.600 Ω (3.0 A to 42.0 A)
1 µA to 100 mA(rms)
USB

LAN

Rise Time Fall Time

RS232CD 430(16.93")(440(17.32"))W×132(5.2")(155(6.10"))H×

D 430(16.93")(440(17.32"))W×132(5.2")(155(6.10"))H×

D 430(16.93")(440(17.32"))W×132(5.2")(155(6.10"))H×

500(19.69")(540(21.26"))Dmm(inch)
W Approx.20 kg(44.1 lbs)

500(19.69")(540(21.26"))Dmm(inch)
W Approx.21 kg(46.3 lbs)

W Approx.22 kg(48.5 lbs)

Timer

500(19.69")(550(21.65"))Dmm(inch)● Test items
A

Model

TOS9300
TOS9301
TOS9301PD
TOS9302
TOS9303
TOS9303LC
TOS9320
2

A

AC Withstanding DC Withstanding
Voltage (AC Hipot) Voltage (DC Hipot)●

Insulation
Resistance

●

●

●

●

●

●

●

Leakage Current

Partial Discharge

●

●

●

Earth Continuity(Ground Bond)

●
●

●

●

●

●

●

●

●

4 channel high voltage scanner with contact check function; can be used standalone.

DER
Electrical Safety Multi-analyzer

TOS9300 Series

The TOS9300 series is a high-performance electrical safety analyzer that complies with a wide range of universal standards. Hipot, Insulation Resistance,
Ground Bond, Leakage Current (touch current and protective conductor current) and partial discharge can all be tested. A total of 6 models are available forstandard compliance tests for a wide variety of applications including R&D, quality assurance manufacturing lines and laboratory tests.

● All-in-one safety tester model (TOS9303LC)● Insulation diagnosis available with partial discharge model (TOS9301PD [NEW])● New amplifier type allows for 40A AC/DC ground bond testing (Ground bond tester models)● Electrical breakdown inspection setting available● AC5 kV/100 mA, DC7.2 kV/100 W Hipot test
● Touch current/protective conductor current/leakage current testing (TOS9303LC)● LAN/USB/RS232C standard digital interface● Easy-to-read LCD display for real-time monitoring during tests.
All measurement values and standards outlines are displayed during each test
● High voltage scanner capable of output distribution both standalone and when connected with existing
withstanding voltage/insulation resistance testing equipment models [TOS5300 series, etc.] (TOS9320)

OptionTOS9320

OthersHigh-voltage Scanner

Remote control box
High-voltage test probe
Test probe for touch current test
Warning light unit
Multi outlet
DIN conversion cable
Rack mount bracket

High-voltage scanner for TOS9300 series
multi-channel testing systems

FeaturesP4 - P7

Applications

P8-9

Exterior Design

P10-11

Specifications

P12- P26

Dimensions

P27

Option/Other

P28-P29

D 430(16.93")(440(17.32"))W×88(3.46")(105(4.13"))H×
370(14.57")(390(15.35"))Dmm(inch)

W Approx.8 kg(17.6 lbs)

ACW

Max. output-voltage of AC hipot testing

DCW

Max. output-voltage of DC hipot testingIR

Measurement range of insulation resistance testing

Rise Time

Fall Time

Equipped with rise time control function
Equipped with fall time control functionEC

Measurement range of ground bond testingLAN

Equipped with LAN interface as standard

LC

Measurement range of leakage current testingUSB

Equipped with USB interface as standard

PD

Measurement range of partial discharge testing

RS232C

Equipped with RS232C interface as standard

D

Dimensions(maximum)

W

WeightTimer

Equipped with timer function

The Electrical Appliance & Material Safety Low (Japan), UL (U.S.A.), CSA (Canada), VDE (Germany) and BS (U.K) are some major examples of safety standards in use throughout the world that require theperforming of hipot testing. For this reason, it is necessary to confirm for what portion of what standard testing is to be performed when purchasing a hipot tester. Although the 500 VA capacity hipot testers available
from KIKUSUI can basically be applied to tests specified in all safety standards, we recommend that you consult with us prior to purchase in order to select the model that best matches your specific application.

For the withstanding test and the insulation resistance test of the EUT (equipment under test) with turned on electricity.
Our hipot testers and insulation resistance testers are designed to test the EUT(equipment under test) with the electricity turned off. In case the test requires the EUT(equipment under test)
to be turned off, please contact our distributor or agent.

3

Features
Color LCD Screen for Improved Visibility!
A brand-new, 7-inch LCD display allows for easy access to your custom
settings, standard outlines and blueprints for easy operation.
(See Exterior Design P10/Display P11)

I/V Monitor Terminal (Analog Monitor)
Signal outputs on the rear panel I/V terminal allow the user to monitor
current/voltage waveforms during hipot tests with only an oscilloscope.
Current sensors and high-voltage probes are not required.
Oscilloscope
TOS9300 Series Rear panel

Can connect with an oscilloscopeusing a BNC cable.
*There is no BNC cable option
available. Users need to acquirea BNC cable themselves.

STATUS OUT Connector
Signals from the rear panel STATUS connector automatically activate theoptional warning light (PL02-TOS) during high voltage output or unsafe test
conditions.

User-Friendly, 10-Key Configuration
The TOS9300 series has included a user-friendly keypad in addition to
the basic rotary knob for easy configuration setting. The front panel USB
interface also allows for direct control via keyboard*.

SIGNAL I/O Connector
The rear panel also has a SIGNAL I/O that can start/stop operation as wellas output signals.
TOS9300 example (The SIGNAL I/O connector is the same on all models.)
19

1

37

20

SIGNAL I/O connector pin number*106/109 Japanese keyboards and 101/104 English keyboard compliant.

Easy Firmware Updates via USB
System firmware can easily be updated via USB memory with updated files
directly accessible from our website. (https://www.kikusui.co.jp/en/download/)Easy
updates

LAN/USB/RS232C Standard Digital Interface
LXI compatible LAN, USB 2.0, USB-TMC compatible USB, and RS232C asstandard digital interface.

▲Rear panel, Interface(All models)►* Connecting with a smartphone,tablet, etc. requires a Wi-Fi
environment (wireless LAN
router etc.).

4

Use a browser from a PC, smartphone, or tablet
to access the web server built into the TOS9300
series for convenient control and monitoring.

[Recommended browser]●Requires for the Internet Explorer version 9.0 or later●Requires for the firefox 8.0 or later●Requires for the safari / mobile Safari 5.1 or later●Requires for the Chrome 15.0 or later●Requires for the Opera 11.0 or later

Pin no.

IN/OUT

Signal name1

IN

INTERLOCK+Description
Activate/release interlock.

2

―

COM

Circuit common (chassis potential) shared by input and output.

3

IN

PM0

4

IN

PM1

5

IN

PM2

6

IN

PM3

7

IN

PM4

8

IN

PM5

Select setup memories and auto test program memories.

9

IN

PM6

10

IN

PM7

11

IN

STB

12

―

Reserved

13―

Reserved

14―

Reserved

15

IN

START

Start a test.

16

IN

STOP

Stop a test.

17

IN

ENABLE

Enable the START signal.

18

―

COM

I/O circuit common (chassis potential).

19

IN

INTERLOCK-

Activate/release interlock.

20

―

COM

I/O circuit common (chassis potential).

21

―

+24V

+24 V internal power supply output terminal.
Maximum output current 100 mA.

22

OUT

H.V ON/LINE ON

Set to on in any of the following conditions. Testing. Auto testing.
Voltage remaining across the output terminals. Power being
supplied to the EUT from the TOS9303LC through AC LINE OUT.

23

OUT

RISE

Set to on when the voltage is rising.

24

OUT

TEST

Set to on during test time.

25

OUT

PASS

Set to on for the duration of time specified by Pass Hold
when a PASS judgment is made.

26

OUT

U FAILSet to on continuously when a U-FAIL judgment is made. Or set
to on continuously along with the L FAIL signal when CONTACT
FAIL judgment is made when a scanner is connected.

27

OUT

L FAILSet to on continuously when an L-FAIL judgment is made. Or set
to on continuously along with the U FAIL signal when CONTACT
FAIL judgment is made when a scanner is connected.

28―

Reserved

Not used.

29

OUT

READY

Set to on when the product is ready to start a test.

30

OUT

PROTECTION

Set to on when a protection function is activated.

31

OUT

STEP END

Set to on when each step ends during an auto test.

32

OUT

CYCLE END

Set to on when the last step ends during an auto test.

33

OUT

ACW

Set to on when the test mode is set to AC withstanding voltage test.

34

OUT

DCW

Set to on when the test mode is set to DC withstanding voltage test.

Recall setup memories and programs selected with thePM0 to PM7 signals.
Not used.

35

OUT

IR

Set to on when the test mode is set to insulation resistance test.

36

OUT

EC

Set to on when the test mode is set to earth continuity test.

37

OUT

LC

Set to on when the test mode is set to touch current test or
protective conductor test.

Universal Input Support● Global Support

Automatic Testing Feature

TOS9300 Series supports universal input
for varying input voltages around the world.

Tests can be combined and configured to execute automatically over long
periods of time. Automatic tests are composed of programs and steps, which
can be configured to initiate one after another.

● Programmable Output Frequency

Stable output frequency not dependent
on input power source. Testing voltage is
supplied at a stable 50/60Hz frequency.

●Program schematic

AC Hipot Testing with Stable Output[Input Voltage Variation: ±0.3%]
Conventional hipot testers utilize a slide transformer to output AC line
voltage. This design is susceptible to input voltage fluctuation, with outside
electrical influence affecting the test results. This can result in distorted
voltage being applied to the EUT which can cause product malfunctions
down the line due to component malfunction. The TOS9300 series utilizes ahighly efficient PWM amplifier capable of stable high-voltage output that is
unaffected by changes in the AC power line. The TOS9300 series allows for
safe, stable, and highly reliable tests regardless of AC power line instability.
Input voltage
variation

TOS9300 Series
Input voltage
distortion

Input waveform on
primary (input) side

Outputs a stablehigh voltage!

Step 1

Step 2

Step 3

ACW test

DCW test

IR test

ProgramMaximum number Maximum numberof programsof steps *1

Executed under
external control

Changing the
program name

Program memory(except LC tests)

100

100

–

ü

Program memory(LC tests only) *2

100

100

–

ü

Executed under
external control

Changing the
program nameMaximum number Maximum numberof programsof steps *1
External control
program memory(except LC tests)

25

100

ü

–

External control
Program memory(LC tests only) *2

24

100

ü

–

*1 Per program*2 TOS9303LC only

Contact/Protective Conductor/		
Patient Leakage Current Test (TOS9303LC)
The TOS9300 series can conduct leakage current (patient current) tests
for highly sensitive medical devices. Measurement networks can be easily
configured via the front panel. (See Applications P8, Specifications P21)

Slide transformer system

PWM amplifier system

High Precision/High Resolution/High Speed
The TOS9300 is equipped with a highly accurate, high resolution RMS
measurement circuit with a voltmeter of ± (1.2% of reading +5 V)/minimum
resolution 0.1 V and an ammeter of ± (1% of reading +2 μA)/ minimum
resolution 1 μA. The series also supports an auto range function, ensuring
similar accuracy in both the upper and lower limit measurements that canaccurately detect connection problems in the test lead. This, combined witha measurement speed of 0.1s, allows for reliable testing with high accuracy
and resolution.

Supports testing for partial discharge (TOS9301PD)
By observing minute partial discharges, it is possible to detect deterioration
inside the insulation and "potential defects" that can affect the life of theinsulation, which cannot be detected by the withstand voltage test.
(See Application P9 and Specification P18)

All Electrical Safety Standard Tests in 		
One Device! (TOS9303LC)
The TOS9303LC is the "all-rounder" model that supports AC/DC withstanding
voltage, insulation resistance, AC/DC earth continuity and leakage currents
tests in a single device. It can also be used for contact current, protective
conductor current and patient leakage current tests.

ACW
DCW
IR
EC
LC

5 kV/100 mA(500 VA)
5 kV/20 mA, 7.2 kV/13.9 mA(100 W)
0.001 MΩ to 100.0 GΩ (DC-25 V to -1000 V/DC+50 V to +7200 V)
0.001 Ω to 0.600 Ω (3.0 A to 42.0 A)
1 µA to 100 mA(rms)

All in One!

Discharge start voltage
Discharge dissipation voltage▲TOS9303LC

5

Features
Programmable Detection Response Speed
Conventional withstanding voltage testers are generally used to only detectinsulation breakdown, and cannot make judgements on instantaneousdischarge currents like partial discharge. However, the TOS9300 series isequipped with 5 levels of response speed settings to accurately detect low
levels of insulation breakdown. Small discharges not visible to conventionalwithstanding voltage testers are easily detected with the TOS9300 series.
Value

Description

LPF

Mean value response type current detector. This is similar to the current
detection response of Kikusui's general-purpose AC withstanding voltage
testers. This setting is suitable for detecting dielectric breakdown definedin safety standards and for general hipot tests for general electronic
devices and components. This setting is not recommended for detecting
corona discharge, which is not considered dielectric breakdown by typicalsafety standards.

Slow

HPF

Medium Mean value response type is faster than the SLOW setting. Upper
Fast

limit judgement detection is much faster, suitable for withstanding
voltage tests on compact electronic components and other EUTs prone
to dielectric breakdown. Instantaneous discharges such as corona
discharges with high frequencies are detected which may not be suitable
for simple withstanding voltage tests.

Slow
Fast

Extremely small discharges such as corona discharges are detected butwith low reproductibility.

7.2 kV/100 W DC Hipot Test
Capable of performing DC Hipot tests up to 7.2 kV utilizing a stable DC/DC
converter with low-ripple and load variation of 1% and below.

Electric Discharge Function
A discharge feature enables discharge of electrical energy from the DUT
after DC hipot and insulation resistance tests have been completed.
The setting range for discharge time is between 0.0s - 100.0s.

AC/DC Earth Continuity Testing up to 40 A
Cutting edge amp technology allows for a wide range of applications,
including general AC earth conduction testing and EV/PHV system DC earth
continuity testing. This also allows for strict adherence to automotive DC
standard requirements, which are expected to increase in the near future.

EARTH FAULT Protection
Mistakenly changing the grounding (GND) setting to "guard" (floating) canresult in grounding the test subject which can result in unwanted leakage
current emissions from the high voltage output site into the grounding site,
resulting in electric shock to the operator. The EARTH FAULT protection
function blocks output and terminates the test; eliminating any risk of electric
shock and maximizing safety for the operator.

Positive Electrode/Negative Electrode Insulation
Resistance Testing
Testing voltage from -25 V to -1000 V, +50 V to +7200 V, with a setting
resolution is 1 V. Insulation resistance can be tested up to 99.99 GΩ.
This makes for easy IEC61730 -2 standard PV (solar battery) module
insulation resistance testing. (See Application P9)

6

Offset Cancel
The Offset Cancel feature allows the user to eliminate electrical current
found in the insulation resistance and stray capacitance among the output
cables (only resistance for DC testing). This feature is available in all testingmodes for AC withstanding voltage, DC withstanding voltage, insulation
resistance, earth continuity and electrical current leakage tests.

Rise Time/Fall Time Control Function
The rise time control function prevents unnecessary stress from being
applied to the EUT.

Multi-Channel Testing System (Optional)● Rise Time control function
The rise time control featureallows you to gradually increase
voltage to a set value while AC/
DC hipot tests are conducted.
Vo l t a g e r i s e t i m e s c a n b e
set from 0.1s to 20 0.0s at aresolution of 0.1s.

The TOS9320 high voltage scanner allows for rapid distribution of testing
voltage from the main unit to multiple testing points for withstanding voltage
and insulation resistance testing. Channels can be controlled via an external
device through the rear panel CONTROLLER INTERFACE connector. The
scanner can also be used standalone or with an external control devicefor other Kikusui withstanding voltage and insulation resistance testing
instruments. Hipot tests for electronic devices with multiple testing points
have never been easier. (See Application P9)[High-voltage scanner TOS9320]● Fall time control function
The fall time control featureallows you to gradually
decrease the test voltage after
a successful AC/DC hipot test.
The voltage fall time can be set
from 0s to 200s at a resolutionof 0.1s. (OFF is also selectable).

▲Front panel▲Rear panel

Basic Memory Function
In addition to automatic testing memory functions, up to 51 basic setting
conditions and testing modes can be selected and saved to the main unit or
USB memory. Easy testing with no hassle!

"sda1" is the folder
displayed when USB
memory is inserted.

● Output can be expanded to four channels with one high-voltage
scanner. The electric potential of each channel can be arbitrarily
set to high, low, or open, and can be tested at any of these four
points.
● Up to four high voltage scanners (total 16 channels) can beconnected to each unit.
● Output of each channel and contact with testing points can beeasily monitored.
[4 channel test system]

Testing conditions
can be saved in
00-50 of "setups".
(Total 51)

RL 1x

CH1 X terminal

RL 1y

CH1 Y terminal

RL 2x

CH2 X terminal

RL 2y

CH2 Y terminal

RL 3x

CH3 X terminal

RL 3y

CH3 Y terminal

RL 4x

CH4 X terminal

RL 4y

CH4 Y terminal

Test point A

Test point B

Test point C

Test point D

OUT HIGH VOLTAGE terminal

Calibration Deadline Notification

OUT LOW terminal

EUT

IN HIGH VOLTAGE terminal

A real-time clock IC has been equipped to ensure that the instrument istraceable via regular calibration. The device will automatically generate
warning notifications when the calibration deadline has exceeded.

IN LOW termina
OUT connector
Control circuit

IN connector
SCANNER connector
HIGH VOLTAGEterminal

TOS9320 scanner

LOW terminal
TOS93 series tester

7

Application
Leakage Current Test
Compatible with medical device leakage current testing (patient current)! (TOS9303LC only)●Test Example

Insulation transformer

L

Power

N

What is patient leakage
current testing?

Enclosure

Medical device

This test measures current flowing fromthe point of contact between a medical
instrument and a simulated human body
network to the ground. If the measurement
does not exceed a value deemed harmful
to a human being as defined in internationalsafety standards, the product is consideredsafe and compliant to electric shock
prevention requirements.

Patient fitting site
Primary
circuitSecondarycircuits

Z2

Z1

PE

Patient fitting site – Patient leakage current between grounding

Easy Test Condition Programmability
Internal measurement circuit networks (I IEC60601-1) enable easily
programmable test conditions.
*For details on other internally installed measurement circuit networks, see Specifications (P21).

Setting test
conditions▲TOS9303LC

Measurement circuit network (network I IEC60601-1)

Electrical safety standard testing for automotive components
Compatible with both AC and DC, the TOS9303LC complies with a wide
variety of safety tests for EV batteries, automotive charging devices andcharging connectors. This "all-in-one" safety analyzer can meet the needsof nearly all automotive electrical safety standards.

All in One!
ACW

DCW

IR

EC

IEC61851-21 etc.
●Hipot test
●Insulation resistance test
Primary - Secondary
Primary - Chassis
Secondary - Chassis●Hipot test
●Insulation resistancetest

Residential Charge

Single cell
ModulePack
ECU

Low voltage
battery▲TOS9303LC

EV charging
systemHigh voltage battery
system

AC100V
AC200V

Quick Charge

DC400V▲EV internal overview

8●Hipot test
●Insulation resistancetest●Ground bond test
●Leakage current test

●Hipot test
●Insulation resistance
test

LC

PV (solar battery) module withstanding voltage/insulation resistance testingWithstanding voltage tests such as IEC61730-2 and JIS C 8992-2 require testing voltage to be drasticallyincreased (4 times the maximum system voltage + 2000 V) and maintained for 1 minute.

[Voltage 1000 V adaptation grade A example]
1000 V × 4-fold + 2000 V = Test voltage :6000 V

max. 7.2 kV*

DCW

Easily compatible with
1000 V PV modules as well!

Also fitted with a highly accurate ammeter●Measurement accuracy:±(1% of reading + 2 μA)

frame
LOW terminal
connected toframe

PV modules

Electrode
HIGH terminal connected toshort circuit output electrode▲TOS9303LC*TOS9301/TOS9303/TOS9303LC only

Partial discharge[EUT (example): small motors, transformers, insulating materials, etc.]
The partial discharge test detects the state before dielectric breakdown, so it can detect potential defects andmanufacturing variations that cannot be detected by the conventional withstand voltage test.
【Partial discharge voltage-Conceptual diagram of current characteristics】
Insulation destruction

Partial discharge
Current (charge)▲ TOS9301PD

Partial discharge start‑

Volt
Partial discharge‑

Insulation destruction

Multi-channel withstanding voltage/insulation resistance testingMultiple testing points can be simultaneously tested to cut costs and save time!
The TOS9320 high voltage scanner allows for multi channel expansion for the TOS9300 series as well as previous models.

[16CH Test system]▼TOS9320

Expanded to 4CH
CH1
CH2
CH3
CH4

▲TOS9300 series

CH5
CH6
CH7
CH8
Previous
model expansion
possible *1▲TOS5300 series*1 Independent control of the scanner is required using EXTERNAL I / O.

CH9
CH10
CH11
CH12
CH13
CH14
CH15
CH16
* Mount on a rack when using two or more scanners.

9Exterior Design
Front panel●TOS9303LCDANGER LED

Lights red when the power is turned on, when a test is in progress, when ahigh voltage is being output, or when there is residual voltage at the output
terminals. On the TOS9303LC, the LED also lights red when supply voltage
is being supplied to the EUT.

USB connector)

Menu keys

Used for external keyboard as well as memory
for settings and test results. Also used for import/
export of programs and firmware updates.

Withstanding voltage,
insulation resistance

Switch display.

Common for all models.

START switch
Start test.

Numeric keypad
For value input.

STOP button

HIGH
VOLTAGE terminal

Stops test andclears current
status. Returns
to Home menu
screen.

Outputs high test
voltage.

LOW
terminal

POWER switch

Outputs low test
voltage (with cablelock).

Turn power on/off.

Eath continuity test

Function keys

Not available for
TOS9300 and TOS9301.

Leakage current test
TOS9303LC only.

Rear panel

Sub-function keys

Rotary knob

Select item and enter
numbers/characters.

REMOTE connector

For connection of optional remotecontrol box and test probes.

I terminal

Signal output terminal for monitoring current
waveforms for withstanding voltage tests.

●TOS9303LCRS232C port

SCANNER connector

Connect to optional high voltage scanner.

USB port
STATUS OUT connector

For remote control.

Connects optional products.

LAN port

For remote control.

SIGNAL I/O connector

I/O signal connector for control
via external signals.

V terminal

Withstanding voltage,
insulation resistance

Signal output terminal
Common for all models.
for monitoring voltage
waveforms for withstanding
voltage tests.

Leakage current
test
TOS9303LC only.

For remote control.

HIGH VOLTAGE
terminal
Outputs high test
voltage.

DC OUT 5 V
terminal

LOW terminal

Connects optional
products.

Outputs low test voltage(with cable lock).

AC INPUT inlet

100 V to 120 V/ 200 V to 240 V●TOS9301PD

10

Ipd terminal

Signal output terminal formonitoring the discharge
waveforms of partial discharge.

Qpd terminal

Signal output terminal formonitoring the electric charge
waveforms of partial discharge.

Display (Each menu screen)●TOS9303LC screen example
Test mode

Test status

Select test type.

LAN connection status

Test condition
setting▲Home Menu

Set conditions for each test. Execute test.

Current menu screen

Press menu key to switch between menus.

Test mode

Select test type.

▲Function Menu

Displays summary of settings for each test. Switch test modes.

▲Program Menu

Configure and execute auto tests.

▲Memory Menu

Use memory function.

▲System Menu

Display and change system settings.

11Unless specified otherwise, the specifications are for the following settings and conditions.
• The product is warmed up for at least 30 minutes.
• TYP: These are typical values that are representative of situations where the product operates in an environment
with an ambient temperature of 23 °C. These values do not guarantee the performance of this product.
• setting: Indicates a setting. • range: Indicates the rated value of each range. • reading: Indicates a readout value.
• The various tests are abbreviated as follows: ACW: AC withstanding voltage, DCW: DC withstanding voltage,
IR: insulation resistance, EC: earth continuity, LC: leakage current, TC: touch current, PCC: protective conductor
current, Patient: patient leakage current, Meter: meter mode

Specifications■ Withstanding Voltage Test
[AC Output function]
Item
Output range

Resolution
Setting accuracy

Max. rated load *1
Max. rated current
Transformer rating
AC output
section

Output voltage
waveform *2

Distortion

Crest factor
Frequency

Accuracy

Voltage regulation
Short-circuit current
Output method
Start voltage
Setting range
Resolution
Output voltage monitor function

TOS9300
TOS9301
TOS9301PD
TOS9302
TOS9303
TOS9303LC
0.050 kV to 5.000 kV
1V±(1.2 % of setting + 0.02 kV) (at no load)
500 VA(5 kV / 100 mA)
100 mA (when the output voltage is 0.2 kV or higher)
500 VASine
2 % or less. (when the output voltage is 0.5 kV or higher and no load or a pure resistive load is connected)√2 ± 3 % (0.8 kV or higher)
50 Hz / 60 Hz±0.1 %±3 % or less (when changing from maximum rated load to no load)
200 mA or more (output voltage 0.5 kV or higher)
PWM switching
The voltage at the start of the test can be set.
1 % to 99 % of the test voltage
1%
If the output voltage exceeds ±(10 % of setting + 0.05 kV), the output is turned off, and the protection function is activated.

[DC Output function]
Item

DC output
section

Output voltage range
Resolution
Setting accuracy
Max. rated load *1
Max. rated current
7.2 kV no load
RippleMax. rated load
Voltage regulation
Short-circuit current
Discharge function

Start voltage
Setting range
Resolution
Output voltage monitor function

TOS9301
TOS9301PD
TOS9303
TOS9303LC
0.050 kV to 7.200 kV
1V±(1.2 % of setting + 0.02 kV)
100 W (5 kV/20 mA, 7.2 kV/13.9 mA)
20 mA
20 Vp-p (TYP)
50 Vp-p (TYP)
1 % or less (when changing from maximum rated load to no load)
100 mA (TYP) (200 mA peak)Forced discharge after test completion (discharge resistance: 125 kΩ)The voltage at the start of the test can be set.
1 % to 99 % of the test voltage
1%
If the output voltage exceeds ±(10 % of setting + 0.05 kV), the output is turned off, and the protection function is activated.

*1 When tests are performed consecutively, output time limit and rest time may become necessary depending on the upper limit setting*2 If an AC voltage is applied to a capacitive load, the output voltage may rise higher than at no load depending on the load capacitance. Further, waveform distortions may occur if an
EUT whose capacitance is dependent on voltage (for example, an EUT that consists of ceramic capacitors) is connected as the load. However, if the test voltage is 1.5 kV, the effect ofa capacitance of 1 000 pF or less can be ignored. Because the product’s high-voltage power supply uses the PWM switching method, if the test voltage is 500 V or less, the switchingand spike noise proportions are large. The lower the test voltage, the greater the waveform is distorted.

[Measurement function]
Item
Measurement range
Resolution
Accuracy
Voltmeter
Response

Ammeter*1 *2

Hold function
Measurement range
Accuracy
Response
Hold function
Offset cancel function
Calibration

TOS9300
TOS9301
TOS9301PD
TOS9302
TOS9303
TOS9303LC
0 kV to 7.5 kV AC/DC
0.1 V±(1.2 % of reading + 0.005 kV)
Can be switched between true rms and mean-value response rms conversion.
Peak-value response in a separate system(the peak-value response is for measuring the dielectric breakdown voltage while rising)
The voltage measurement after a test is finished is held while the pass/fail judgment is displayed.
AC: 0.00 mA to 110 mA, DC: 0.00 mA to 22 mA (Current including the active component and reactive component)±(1 % of reading + 2 μA) (active component)
Can be switched between true rms and mean-value response rms conversion.
The current measurement after a test is finished is held while the pass judgment is displayed.
Cancels up to 10 mA of the current flowing through the insulation resistance and stray capacitance components acrossoutput cables and the like (resistance component only for DC tests). OFF function available.
Active component: Calibrated with the rms of a sine wave using a pure resistive load.
Reactive component: Not calibrated.

*1 During AC voltage tests, current also flows in the stray capacitance of items such as the test leads and tools.
For details on stray capacitance, see “Stray Capacitance of AC Withstanding Voltage Tests”*2 When the temperature and humidity are high, erroneous current from the product’s internal and external high-voltage wiring sections to ground increases. When the humidity exceeds
70 %, an erroneous current of about 50 μA may be generated.

12

[Judgment function]
Item
Current judgment operation
Judgment method
UPPER FAIL

Display
Buzzer
SIGNAL I/O
Judgment method

LOWER FAIL

PASS

Display
Buzzer
SIGNAL I/O
Judgment method
Display
Buzzer
SIGNAL I/O

Voltage rise rate judgment operation

dV/dt FAIL

Judgment method
Display
Buzzer
SIGNAL I/O

Upper limit setting range
Lower limit setting range
Judgment accuracy *1 *2
Current detection method
Response speed (filter) switching

TOS9300
TOS9301
TOS9301PD
TOS9302
TOS9303
TOS9303LC
The output is shut off when a judgment is made. Buzzer volume level can be set in the range of 0 (OFF) to 10 for pass andfail separately. In an auto test, the buzzer is valid only for the judgment that takes place at the end of the program.
UPPER FAIL results when a current greater than or equal to the Upper limit is detected.
For DCW, judgment is not made during the judgment delay (Judge Delay).
“Upper-FAIL” is displayed.
On
The Upper-FAIL signal is generated continuously until a STOP signal is received.
LOWER FAIL results when a current less than or equal to the Lower limit is detected.
Judgment is not made during Voltage rise time or Voltage fall time of an ACW test.
“Lower-FAIL” is displayed.
On
The Lower-FAIL signal is generated continuously until a STOP signal is received.
PASS judgment is made if Upper-FAIL or Lower-FAIL has not occurred when the test time elapses.
“PASS” is displayed.
On (fixed to 50 ms)
The PASS signal is generated for the length of time specified by the Pass Hold set-ting.
If Pass Hold is set to Infinity, the PASS signal is generated continuously until a STOP signal is received.
Monitors the voltage rise rate during Voltage rise time. This is valid when Auto setting of the judgment delay (Delay Auto) is
set to on and the output voltage is 200 V or more. The output is shut off when a judgment is made. Buzzer volume level canbe set in the range of 0 (OFF) to 10 for pass and fail separately.
When the voltage rise rate (dV/dt) is less than approx. 1 V/s.
“ Upper-FAIL(dv/dt)” is displayed.
ON
The U FAIL signal is generated continuously until a STOP signal is received.
AC: 0.01 mA to 110.00 mA, DC: 0.01 mA to 21.00 mA
AC: 0.00 mA to 109.99 mA, DC: 0.00 mA to 20.99 mA, OFF. Setting 0.00 is equivalent to OFF.
±(1 % of setting + 5 μA)
Compares to the reference value using the following method.
Calculate true rms values, convert mean-value responses to rms values
Switches the current detection response speed (sensitivity) used in UPPER FAIL judgment between five levels in ACW and
DCW tests.

*1 During AC voltage tests, current also flows in the stray capacitance of items such as the test leads and tools. For details on stray capacitance, see “Stray Capacitance of AC
Withstanding Voltage Tests”*2 When the temperature and humidity are high, erroneous current from the product’s internal and external high-voltage wiring sections to ground increases. When the humidity exceeds
70 %, an erroneous current of about 50 μA may be generated.

[Timer function]
Item
Voltage rise time settings range
Voltage fall time setting time *1
Test time setting range
Judgment delay (Judge Delay) setting range *2
Accuracy

TOS9300
TOS9301
TOS9301PD
0.1 s to 200.0 s
0.1 s to 200.0 s, OFF
0.1 s to 1000.0 s, OFF
0.1 s to 100.0 s, AUTO *3 (DCW only)±(100 ppm of setting + 20 ms) (excluding the fall time)

TOS9302

TOS9303

TOS9303LC*1 This setting is used only when a PASS judgment occurs in ACW and DCW tests. During a DCW test, the voltage may not drop all the way within the set time because of the electrostatic
capacity inside the product and the EUT.
*2 Less than the sum of the rise time and fall time.
*3 If Delay Auto is set to on, LOWER judgment is not made until the charge time ends.

[Other specifications]
Item
Analog monitor *1
IVGrounding mode (GND)
Low
Guard *2

TOS9300
TOS9301
TOS9301PD
TOS9302
TOS9303
TOS9303LC
Outputs a voltage signal according to the current waveform or voltage waveform
Current waveform: Scale 50 mA/1 V
Voltage waveform: Scale 1 kV/1 V
Can be switched between Low and Guard.
GND is connected to the low terminal. Measures the current flowing across the low terminal and chassis (normal
applications).
GND is connected to Guard. Measures only the current flowing through the low terminal (cur-rent flowing through thechassis is not measured) (high sensitivity, high accuracy measure-ment applications).

*1 Monitor signal output is isolated from the chassis (earth). If you connect an oscilloscope or an external device whose BNC shield is grounded, be sure to set the grounding mode (GND)
to Guard. The value is not calibrated.
*2 If there is a possibility that the EUT or tools and the like will be grounded or if you are uncertain, do not set GND to Guard. Doing so is extremely dangerous because the ammeter will
be shorted and will not be able to measure current. For normal applications, set GND to Low.

13

Specifications■ Insulation Resistance Test
[Output function]
Item
Output voltage
range
Negativepolarity

Resolution
Setting accuracy

Max. rated load
1 kV no load
Max. rated load

RippleShort-circuit current
Output voltage
range
Positivepolarity *1

Resolution
Setting accuracy

Max. rated load
1 kV no load
Max. rated load

RippleShort-circuit current
Max. rated current
Voltage regulation
Discharge function
Output voltage monitor function

TOS9300
TOS9301
TOS9301PD
TOS9303
TOS9303LC-0.025 kV to -1 kV
1V±(1.2 % of setting + 0.002 kV)
1 W (-1 kV/1 mA)
2 Vp-p or less
10 Vp-p or less
12 mA or less+0.05 kV to +7.2 kV
1V±(1.2 % of setting + 0.02 kV)
7.2 W(7.2 kV/1 mA)−
20 Vp-p or less
50 Vp-p or less
100 mA (TYP) (200 mA peak)
1 mA
1 % or less (when changing from maximum rated load to no load)
Forced discharge after test completion (discharge resistance: 20 kΩ)If the output voltage exceeds ±(10 % of setting + 0.05 kV), the output is turned off, and the protection function is activated.

*1 TOS9300 are not supported.

[Measurement function]
Item
Voltmeter

Measurement range
Resolution
Accuracy
Measurement range
5 nA ≤ i ≤ 50 nA *3

50 nA < i ≤ 100 nA *3
Accuracy *1 *2(when GND is
set to Guard)(i: measured
current)(R:measurement
resistance)

100 nA < i ≤ 200 nA *4

200 nA < i ≤ 1 μA *4

1 μA < i ≤ 1 mA *4
Resistancemeter

5 nA ≤ i ≤ 50 nA *3

50 nA < i ≤ 100 nA *3
Accuracy *5(when GND
is set to Low)
(i: measured
current)(R:measurement
resistance)

100 nA < i ≤ 200 nA *4

200 nA < i ≤ 1 μA *4

1 μA < i ≤ 1 mA *3
Hold function
Offset cancel function

TOS9300
TOS9301
TOS9301PD
TOS9303
TOS9303LC
Negative polarity: 0 Vdc to -1200 Vdc, positive polarity: 0 Vdc to 7500 Vdc
0.1 V
Negative polarity: ±(1 % of reading + 1 V), positive polarity: ±(1.2 % of reading + 1 V)
0.001 MΩ to 100.0 GΩ (in the range of maximum rated current of 1 mA to 5 nA)
500.000 MΩ ≤ R < 1.000 GΩ:±(15 % of reading + 0.5 MΩ)
1.000 GΩ ≤ R < 10.000 GΩ:±(15 % of reading + 5 MΩ)
10.000 GΩ ≤ R ≤ 100.000 GΩ:±(20 % of reading + 200 MΩ)
200.000 MΩ ≤ R < 1.000 GΩ:±(10 % of reading + 0.5 MΩ)
1.000 GΩ ≤ R < 10.000 GΩ:±(10 % of reading + 5 MΩ)
10.000 GΩ ≤ R < 50.000 GΩ:±(10 % of reading + 50 MΩ)
50.000 GΩ ≤ R ≤ 100.000 GΩ:±(20 % of reading + 200 MΩ)
100.000 MΩ ≤ R < 1.000 GΩ:±(7 % of reading + 0.5 MΩ)
1.000 GΩ ≤ R < 2.000 GΩ:±(7 % of reading + 5 MΩ)
2.000 GΩ ≤ R < 10.000 GΩ:±(7 % of reading + 10 MΩ)
10.000 GΩ ≤ R < 50.000 GΩ:±(7 % of reading + 100 MΩ)
10.000 MΩ≤ R < 100.000 MΩ:±(5 % of reading + 0.05 MΩ)
100.000 MΩ ≤ R < 1.000 GΩ:±(5 % of reading + 0.5 MΩ)
1.000 GΩ ≤ R < 10.000 GΩ:±(5 % of reading + 5 MΩ)
10.000 GΩ ≤ R < 25.000 GΩ:±(5 % of reading + 50 MΩ)
0.001 MΩ ≤ R < 10.000 MΩ:±(2 % of reading + 0.003 MΩ)
10.000 MΩ ≤ R < 100.000 MΩ:±(2 % of reading + 0.03 MΩ)
100.000 MΩ ≤ R < 1.000 GΩ:±(2 % of reading + 0.3 MΩ)
1.000 GΩ ≤ R < 5.000 GΩ:±(2 % of reading + 3 MΩ)
500.000 MΩ≤ R < 1.000 GΩ:±(25 % of reading + 0.5 MΩ)
1.000 GΩ≤ R < 10.000 GΩ:±(25 % of reading + 5 MΩ)
10.000 GΩ≤ R ≤ 100.000 GΩ:±(30 % of reading + 200 MΩ)
200.000 MΩ≤ R < 1.000 GΩ:±(20 % of reading + 0.5 MΩ)
1.000 GΩ≤ R < 10.000 GΩ:±(20 % of reading + 5 MΩ)
10.000 GΩ≤ R < 50.000 GΩ:±(20 % of reading + 50 MΩ)
50.000 GΩ≤ R ≤ 100.000 GΩ:±(30 % of reading + 200 MΩ)
100.000 MΩ≤ R < 1.000 GΩ:±(10 % of reading + 0.5 MΩ)
1.000 GΩ≤ R < 2.000 GΩ:±(10 % of reading + 5 MΩ)
2.000 GΩ≤ R < 10.000 GΩ:±(10 % of reading + 10 MΩ)
10.000 GΩ≤ R < 50.000 GΩ:±(10 % of reading + 100 MΩ)
10.000 MΩ≤ R < 100.000 MΩ:±(5 % of reading + 0.05 MΩ)
100.000 MΩ≤ R < 1.000 GΩ:±(5 % of reading + 0.5 MΩ)
1.000 GΩ≤ R < 10.000 GΩ:±(5 % of reading + 5 MΩ)
10.000 GΩ≤ R < 25.000 GΩ:±(5 % of reading + 50 MΩ)
0.001 MΩ≤ R < 10.000 MΩ:±(2 % of reading + 0.003 MΩ)
10.000 MΩ≤ R < 100.000 MΩ:±(2 % of reading + 0.03 MΩ)
100.000 MΩ≤ R < 1.000 GΩ:±(2 % of reading + 0.3 MΩ)
1.000 GΩ≤ R < 5.000 GΩ:±(2 % of reading + 3 MΩ)The resistance measurement after a test is finished is held while the pass judgment is displayed.
Cancels up to 2000 GΩ of the unnecessary insulation resistance across output cables and the like. OFF function available.

*1 Humidity: 70 %rh or less (no condensation), when there is no interference caused by wobbly test leads or other problems.
*2 If the grounding mode (GND) is set to low in a highly humid environment, leakage current to ground will be generated from the high-voltage wiring sections inside the product and thehigh-voltage wiring sections between the product and the EUT. This leakage current ranges from several nA to several tens of nA depending on the usage and wiring conditions of theoptional TOS9320 high voltage scanner and greatly affects measurement accuracy. The effects of leakage current can be reduced by making measurements with the offset enabled.
*3 Add 10 % to the accuracy when measuring 100 V or less.
*4 Add 5 % to the accuracy when measuring 100 V or less.
*5 When the measured current is limited to 100 nA or more (no condensation) when the humidity is 50 %rh or less, no external disturbance is present such as swinging test leads, and theoffset is enabled.

14

[Judgment function]
Item
Behavior based on judgment
Judgment method
UPPER FAIL

Display
Buzzer
SIGNAL I/O
Judgment method

LOWER FAIL

PASS

Display
Buzzer
SIGNAL I/O
Judgment method
Display
Buzzer
SIGNAL I/O

Voltage rise rate judgment operation

dV/dt FAIL

Judgment method
Display
Buzzer
SIGNAL I/O

Upper limit setting range
Lower limit setting range
5 nA ≤ i ≤ 50 nA *4

50 nA < i ≤ 100 nA *4

Accuracy *1 *2 *3(when GND is set to Guard)(i: measured current)(R: measurement resistance)

100 nA < i ≤ 200 nA *5

200 nA < i ≤ 1 μA *5

1 μA < i ≤ 1 mA *5

5 nA ≤ i ≤ 50 nA *4

50 nA < i ≤ 100 nA *4

Accuracy *6(when GND is set to Low)
(i: measured current)(R: measurement resistance)

100 nA < i ≤ 200 nA *5

200 nA < i ≤ 1 μA *5

1 μA < i ≤ 1 mA *5

TOS9300
TOS9301
TOS9301PD
TOS9303
TOS9303LC
The output is shut off when a judgment is made. Buzzer volume level can be set in the range of 0 (OFF) to 10 for passand fail separately. In an auto test, the buzzer is valid only for the judgment that takes place at the end of the program.
UPPER FAIL results when a resistance greater than or equal to the Upper limit is detected.
Judgment is not made during or Voltage rise time.
“Upper-FAIL” is displayed.
On
The Upper-FAIL signal is generated continuously until a STOP signal is received.
LOWER FAIL results when a resistance less than or equal to the Lower limit is detected.
Judgment is not made during the judgment delay (Judge Delay).
“Lower-FAIL” is displayed.
On
The Lower-FAIL signal is generated continuously until a STOP signal is received.
PASS judgment is made if Upper-FAIL or Lower-FAIL has not occurred when the test time elapses.
“PASS” is displayed.
On (fixed to 50 ms)
The PASS signal is generated for the length of time specified by the Pass Hold setting.
If Pass Hold is set to Infinity, the PASS signal is generated continuously until a STOP signal is received.
Monitors the voltage rise rate during Voltage rise time. This is valid when Auto setting of the judgment delay (Delay Auto)is set to on and the output voltage is 200 V or more. The output is shut off when a judgment is made. Buzzer volume levelcan be set in the range of 0 (OFF) to 10 for pass and fail separately.
When the voltage rise rate (dV/dt) is less than 1 V/s.
“ Lower-FAIL(dv/dt)” is displayed.
On
The L FAIL signals are generated continuously until a STOP signal is received.
0.001 MΩ to 100.000 GΩ (in the range up to the maximum rated current), OFF
0.000 MΩ to 99.999 GΩ (in the range up to the maximum rated current), OFF. Setting 0.000 is equivalent to OFF.
500.000 MΩ ≤ R < 1.000 GΩ:±(15 % of setting + 0.51 MΩ)
1.000 GΩ ≤ R < 10.000 GΩ:±(15 % of setting + 15 MΩ)
10.000 GΩ ≤ R ≤ 100.000 GΩ:±(20 % of setting + 210 MΩ)
200.000 MΩ ≤ R < 1.000 GΩ:±(10 % of setting + 0.51 MΩ)
1.000 GΩ ≤ R < 10.000 GΩ:±(10 % of setting + 15 MΩ)
10.000 GΩ ≤ R < 50.000 GΩ:±(10 % of setting + 60 MΩ)
50.000 GΩ ≤ R ≤ 100.000 GΩ:±(20 % of setting + 210 MΩ)
100.000 MΩ ≤ R < 1.000 GΩ:±(7 % of setting + 0.51 MΩ)
1.000 GΩ ≤ R < 2.000 GΩ:±(7 % of setting + 15 MΩ)
2.000 GΩ ≤ R < 10.000 GΩ:±(7 % of setting + 20 MΩ)
10.000 GΩ ≤ R < 50.000 GΩ:±(7 % of setting + 110 MΩ)
10.000 MΩ ≤ R < 100.000 MΩ:±(5 % of setting + 0.06 MΩ)
100.000 MΩ ≤ R < 1.000 GΩ:±(5 % of setting + 0.51 MΩ)
1.000 GΩ ≤ R < 10.000 GΩ:±(5 % of setting + 15 MΩ)
10.000 GΩ ≤ R < 25.000 GΩ:±(5 % of setting + 60 MΩ)
0.001 MΩ ≤ R < 10.000 MΩ:±(2 % of setting + 0.013 MΩ)
10.000 MΩ ≤ R < 100.000 MΩ:±(2 % of setting + 0.04 MΩ)
100.000 MΩ ≤ R < 1.000 GΩ:±(2 % of setting + 0.31 MΩ)
1.000 GΩ ≤ R < 5.000 GΩ:±(2 % of setting + 13 MΩ)
500.000 MΩ ≤ R < 1.000 GΩ:±(25 % of setting + 0.51 MΩ)
1.000 GΩ ≤ R < 10.000 GΩ:±(25 % of setting + 15 MΩ)
10.000 GΩ ≤ R ≤ 100.000 GΩ:±(30 % of setting + 210 MΩ)
200.000 MΩ ≤ R < 1.000 GΩ:±(20 % of setting + 0.51 MΩ)
1.000 GΩ ≤ R < 10.000 GΩ:±(20 % of setting + 15 MΩ)
10.000 GΩ ≤ R < 50.000 GΩ:±(20 % of setting + 60 MΩ)
50.000 GΩ ≤ R ≤ 100.000 GΩ:±(30 % of setting + 210 MΩ)
100.000 MΩ ≤ R < 1.000 GΩ:±(10 % of setting + 0.51 MΩ)
1.000 GΩ ≤ R < 2.000 GΩ:±(10 % of setting + 15 MΩ)
2.000 GΩ ≤ R < 10.000 GΩ:±(10 % of setting + 20 MΩ
10.000 GΩ ≤ R < 50.000 GΩ:±(10 % of setting + 110 MΩ)
10.000 MΩ ≤ R < 100.000 MΩ:±(5 % of setting + 0.06 MΩ)
100.000 MΩ ≤ R < 1.000 GΩ:±(5 % of setting + 0.51 MΩ)
1.000 GΩ ≤ R < 10.000 GΩ:±(5 % of setting + 15 MΩ)
10.000 GΩ ≤ R < 25.000 GΩ:±(5 % of setting + 60 MΩ)
0.001 MΩ ≤ R < 10.000 MΩ:±(2 % of setting + 0.013 MΩ)
10.000 MΩ ≤ R < 100.000 MΩ:±(2 % of setting + 0.04 MΩ)
100.000 MΩ ≤ R < 1.000 GΩ:±(2 % of setting + 0.31 MΩ)
1.000 GΩ ≤ R < 5.000 GΩ:±(2 % of setting + 13 MΩ)*1 Making judgments on 200 μA or less requires at least 3 seconds after the rise time ends. Making judgments when the low pass filter is set to on requires at least 10 seconds after therise time ends.
*2 Humidity: 70 %rh or less (no condensation), when there is no interference caused by wobbly test leads or other problems.
*3 If the grounding mode (GND) is set to low in a highly humid environment, leakage current to ground will be generated from the high-voltage wiring sections inside the product and thehigh-voltage wiring sections between the product and the EUT. This leakage current ranges from several nA to several tens of nA depending on the usage and wiring conditions of theoptional TOS9320 high voltage scanner and greatly affects measurement accuracy. The effects of leakage current can be reduced by making measurements with the offset enabled.
*4 Add 10 % to the accuracy when measuring 100 V or less.
*5 Add 5 % to the accuracy when measuring 100 V or less.
*6 When the measured current is limited to 100 nA or more (no condensation) when the humidity is 50 %rh or less, no external disturbance is present such as swinging test leads, and theoffset is enabled.

15

Specifications[Timer function]
Item

TOS9300

TOS9301

Voltage rise time settings range

0.1 s to 200.0 s

Test time setting range

0.1 s to 1000.0 s, OFF

Judgment delay (Judge Delay) setting range *1

0.1 s to 100.0 s, AUTO *2

Accuracy *3±(100 ppm of setting + 20 ms)

TOS9301PD

TOS9303

TOS9303LC*1 Less than the sum of the rise time and fall time.
*2 If Delay Auto is set to on, UPPER judgment is not made until the charge time ends.
*3 This excludes fall time.

[Other specifications]
Item
Grounding mode (GND)
Low
Guard *1
Filter function

TOS9300
TOS9301
TOS9301PD
TOS9303
TOS9303LC
Can be switched between Low and Guard.
GND is connected to the low terminal.
Measures the current flowing across the low terminal and chassis (normal applications).
GND is connected to Guard. Measures only the current flowing through the low terminal (current flowing through thechassis is not measured) (high sensitivity, high accuracy measurement applications).
A low-pass filter can be inserted into the ammeter measurement circuit. *2*1 If there is a possibility that the EUT or tools and the like will be grounded or if you are uncertain, do not set GND to Guard. Doing so is extremely dangerous because the ammeter will
be shorted and will not be able to measure current. For normal applications, set GND to Low.
*2 When the low pass filter is on, a judgment delay of at least 5 seconds and a test time are required.

16

■ Earth Continuity Test
[Output function]
Item
Current setting range *1

Resolution
Accuracy
Maximum rated output *2
DistortionAC

DC

Frequency
Accuracy
Open terminal voltage
Output method
Maximum rated output
RippleOpen terminal voltage

TOS9302
TOS9303
3.0 A to 42.0 A AC/DC
0.1 A±(1 % of setting + 0.4 A)
220 VA (at the output terminal)
2 % or less (20 A or more, using a 0.1 Ω pure resistive load)
Select 50 Hz or 60 Hz. Sine±200 ppm
6 Vrms or less
PWM switching
220 W (at the output terminal)±0.4 Ap-p or less (TYP)
6.0 V or less

TOS9303LC*1 No greater than the maximum rated output and resistance no greater than the output terminal voltage 5.4 V.
*2 When tests are performed consecutively, output time limit and rest time may become necessary depending on the upper limit setting.

[Measurement function]
Item
Outputammeter

Outputvoltmeter

Resistancemeter

Measurement range
Resolution
Accuracy
Response
Hold function
Measurement range
Resolution
Offset cancel function
Accuracy
Response
Hold function
Measurement range *1
Resolution
Offset cancel function
Accuracy
Hold function

TOS9302
TOS9303
TOS9303LC
0.0 A to 45.0 A AC/DC
0.01 A±(1 % of reading + 0.2 A)
AC: true rms value: DC: mean value
The current measurement after a test is finished is held while the pass or fail judgment is displayed.
AC: 0.00 V to 6.00 V, DC: 0.00 V to 8.50 V
0.001 V
Cancels up to 5 V (AC/DC) of the unnecessary voltage from measurements. OFF function available.
±(1 % of setting + 0.02 V)
AC: true rms value: DC: mean value
The voltage measurement after a test is finished is held while the pass or fail judgment is displayed.
1 mΩ to 600 mΩ
1 mΩ
Cancels up to 10 Ω of the unnecessary resistance from measurements. OFF function available.
±(2 % of reading + 3 mΩ)The resistance measurement after a test is finished is held while the pass judgment is displayed.

*1 Calculated from the measured output voltage and measured output current.

[Judgment function]
Item

Judgment method
UPPER FAIL

Behavior basedon judgment

Display
Buzzer
SIGNAL I/O
Judgment method

LOWER FAIL

PASS

Display
Buzzer
SIGNAL I/O
Judgment method
Display
Buzzer
SIGNAL I/O

Resistancejudgment
Voltagejudgment

Upper limit setting range
Lower limit setting range
Judgment accuracy
Upper limit setting range
Lower limit setting range
Judgment accuracy

Calibration
Contact check function

TOS9302
TOS9303
TOS9303LC
Judgment based on resistance or sensing voltage can be selected. The output is shut off when a judgment is made.
Buzzer volume level can be set in the range of 0 (OFF) to 10 for pass and fail separately.
In an auto test, the buzzer is valid only for the judgment that takes place at the end of the program.
UPPER FAIL results when a resistance greater than or equal to the Upper limit is detected or when a sensing voltage is
detected. Judgment is not made during a contact check.
“U-FAIL” is displayed.
On
The U-FAIL signal is generated continuously until a STOP signal is received.
LOWER FAIL results when a resistance less than or equal to the lower limit (Lower) is detected or when a sensing voltage
is detected.
“L-FAIL” is displayed.
On
The L-FAIL signal is generated continuously until a STOP signal is received.
PASS judgment is made if U-FAIL or L-FAIL has not occurred when the test time elapses.
“PASS” is displayed.
On (fixed to 50 ms)
The PASS signal is generated for the length of time specified by the Pass Hold setting.
If Pass Hold is set to Infinity, the PASS signal is generated continuously until a STOP signal is received.
0.0001 Ω to 10.0000 Ω
0.0000 Ω to 9.9999 Ω±(2 % of setting + 3 mΩ)
0.001 V to 5.000 V AC/DC
0.000 V to 4.999 V AC/DC±(2 % of setting + 0.05 V)
Calibrated using a pure resistive load (with the rms of a sine wave for AC)
Checks that current flows through the test leads and then starts the test. (OFF setting available)[Timer function]
Item
Current rise time settings range
Current fall time setting time *1
Test time
Accuracy

TOS9302
0.1 s to 200.0 s
0.1 s to 200.0 s, OFF
0.1 s to 1000.0 s, OFF±(100 ppm of setting + 20 ms) (excluding the fall time)

TOS9303

TOS9303LC*1 This setting is used only when a PASS judgment occurs. During a DC test, the voltage may not drop all the way within the set time because of the electrostatic capacity inside theproduct and the EUT.

17

Specifications■ Partial Discharge Test
[Output function]
Item
Output range

Resolution
Setting accuracy

Max. rated load
Max. rated current
AC output
section

Output voltage
waveform*1

Distortion

Crest factor
Frequency

Accuracy

Voltage regulation
Output method
Output voltage monitor function

TOS9301PD
0.050 kV to 5.000 kV
1V±(1.2% of setting + 0.02kV) (at no load)
250 VA (5 kV/ 50mA)
50 mA (when the output voltage is 0.2 kV or higher)
Sine
2 % or less. (when the output voltage is 0.5 kV or higher and no load or a pure resistive load is connected)√2 ± 3 % (0.8 V or higher)
50 Hz/60 Hz±0.1 %±3 % or less (when changing from maximum rated load to no load)
PWM switching
If the output voltage exceeds ±(10 % of setting + 0.05 kV), the output is turned off, and the protection function is activated.

*1 If an AC voltage is applied to a capacitive load, the output voltage may rise higher than at no load depending on the load capacitance. Further, waveform distortions may occur if an
EUT whose capacitance is dependent on voltage (for example, an EUT that consists of ceramic capacitors) is connected as the load. However, if the test voltage is 1.5kV, the effect ofa capacitance of 1 000pF or less can be ignored. Because the product’s high-voltage power supply uses the PWM switching method, if the test voltage is 500 V or less, the switchingand spike noise proportions are large. The lower the test voltage, the greater the waveform is distorted.

[Measurement function]
Item
Measurement range
Resolution
Accuracy
Voltmeter
Response
Hold function
Electric charge measurement method
Measurement range
100pC range
Measurement
1000pC range
resolution
10000pC rang
100pC range
Accuracy*1
1000pC range
10000pC rang
Measurement interval
Hold function
Maximum electrostatic capacity of the EUT
Electric charge
Peak hold function
measurement
Filter function
Discharge inception voltage, discharge
inception voltage measurement
Calibration (Precalibration)
Pulse counting
function
BPF characteristics
switching function

Upper limit setting
range

1 to 100000

Center frequency

Can switch the characteristics of the band-pass filter in the electric charge measuring circuit
100 kHz / 160 kHz / 300 kHz
0.01 μF

Coupling capacitor*1 When Band Pass Filter is set to 160 kHz.

18

TOS9301PD
0.00 kV to 7.50 kV AC/DC
0.1 V±(1.2 % of reading + 0.05 kV)
Can be switched between true rms and peak-value response.
The voltage measurement after a test is finished is held while the pass/fail judgment is displayed.
IEC60664-1 Edition 3.0 compliant
0 pC to 10000 pC
0.1 pC0.1 pC
1 pC±(5 % of full scale + 7 pC)±(5 % of full scale)±(5 % of full scale)
Determined based on the measured values in each cycle of an applied voltage.
The electric charge after a test is finished is held while the pass judgment is displayed.
10 nF
Holds the maximum value during a measurement.
A low-pass filter can be inserted into the electric charge measurement circuit.
Measures the voltage at which discharge exceeding a preset electric charge starts and the voltage at which dischargeceases (complies with IEC60664-1 third edition).
Calibrate using the built-in calibration capacitor (1000 pF).
Counts the number of pulses that have passed through the high-pass filter and makes a FAIL judgment if the countexceeds the upper limit.

[Judgment function]
Item
Electric discharge judgment
Judgment method
Display
Buzzer
SIGNAL I/O
Judgment method
Display
Buzzer
SIGNAL I/O
Judgment method
Display
Buzzer
SIGNAL I/O
Judgment method
Display
Buzzer

UPPER FAIL
(Current)

UPPER FAIL
(Coulomb)

UPPER FAIL
(Pulse)PASS

SIGNAL I/O
Upper current limit
Upper limit of electric charge(Upper Coulomb)

Setting range
Accuracy

Pulse count judgment criteria(Upper Pulse Count) setting range

TOS9301PD
The output is shut off when a judgment is made.
A current higher than or equal to the upper limit is measured.
“Upper-FAIL (Current)” is displayed.
On
The Upper-FAIL signal is generated continuously until a STOP signal is received.
An electric charge greater than or equal to the upper limit is measured.
“Upper-FAIL (Coulomb)” is displayed.
On
The Upper-FAIL signal is generated continuously until a STOP signal is received.
A discharge pulse count greater than or equal to the upper limit is measured.
“Upper-FAIL (Pulse)” is displayed.
On
The Upper-FAIL signal is generated continuously until a STOP signal is received.
Upper-FAIL does not happen after the test time has elapsed.
“PASS” is displayed.
On
The PASS signal is generated for the length of time specified by the Pass Hold setting.
If Pass Hold is set to Infinity, the PASS signal is generated continuously until a STOP signal is received.
50 mA (with no calibration)
1 pC to 10000 pC
As per the accuracy of electric charge measurement
1 to 100000 (with no calibration)[Timer function]
Item
Voltage rise time (Rise Time) setting range
Voltage fall time (Fall Time) setting range *1
Test time setting range
Accuracy

TOS9301PD
0.1 s to 200.0 s
0.1 s to 200.0 s, OFF
0.1 s to 1000.0 s, OFF±(100 ppm of setting + 20 ms) (excluding Fall Time)*1 This setting is used only when PASS judgment occurs.

[Other specifications]
Item
Analog monitor*1
V
Qpd
Ipd*2

TOS9301PD
Outputs a voltage signal according to the current waveform, voltage waveform, or electric discharge waveforms.
Voltage waveform: Scale 1kV/1V
Electric discharge: Full scale of the scale measurement range/10 V
Partial discharge current waveform*1 Monitor signal output is isolated from the chassis (earth).
*2 The lpd waveforms are the ones that can be obtained after the actual discharge waveforms have passed the TOS9301PD measurement filter. Therefore, the scale varies according to
the frequency response of the discharge waveform.

19

Specifications■ Leakage Current Test
[Measurement function]
ItemTC
Measurement mode
Enc - PeProbe
settings

Measurement
Item

PCC

Patient

Enc - Enc
Enc - Liv
Enc - Neu

Measurement method

Measurement method

Current
Measurement measurement
methodVoltagemeasurement
DC
Current measurement mode
RMS
Peak *1
Meter

TOS9303LC
Touch current measurement
Uses a measurement circuit network representing the impedance of a human body and measures the voltage drop
across a reference resistance to calculate the touch current.
A terminal: measurement terminal (for connecting to the enclosure of the EUT)
B terminal: open
A and B terminals: measurement terminal (for connecting to the enclosure of the EUT)
A terminal: measurement terminal (for connecting to the enclosure of the EUT)
B terminal: open
Protective conductor current measurement
Measures the voltage drop across a reference resistance inserted in the middle of the protective ground line to calculate
the protective conductor current. The measurement impedance is 150 Ω.
Patient leakage current measurement
Uses a network conforming to IEC 60601 and measures the voltage drop across a reference resistance to calculate thepatient leakage current.
Measures the current flowing or voltage applied across the A and B terminals (simultaneous measurement notpossible).
Uses a measurement circuit network representing the impedance of a human body and measures the voltage drop
across a refer-ence resistance to calculate the current flowing across the A and B terminals.
Measures the voltage applied across the A and B terminals.
Eliminates AC components and measures only the DC component.
Measures the true rms value (switch AC and AC+DC)
Measures waveform peak values*1 Current measurements may not be stable due to the effects of the power supply line waveform or the wiring environment between the product and the EUT.

[Measurement circuit network]
Item
A (IEC 60990 compliant) *1
B (IEC 60990 compliant)
C (IEC 60990 compliant)
D (Electrical Appliances and Materials Safety
Act, etc.)
E (Electrical Appliances and Materials Safety
NetworkAct)
F (UL and the like)G
H (IEC 61010-1)
I (Patient, IEC60601-1wet)
J (through)
PCC-1
PCC-2 (IEC 60598-1)
Network constant tolerance
A, B, C, H
E
Network accuracy
D, GI

TOS9303LC(1.5 kΩ // 0.22 μF) + 500 Ω, reference measurement element: 500 Ω(1.5 kΩ // 0.22 μF) + 500 Ω // (10 kΩ + 22 nF), reference measurement element: 500 Ω,
voltage measurement U1 and U3 switchable(1.5 kΩ // 0.22 μF) + 500 Ω // (10 kΩ + (20 kΩ + 6.2 nF) // 9.1 nF), reference measurement element: 500 Ω,
voltage measurement U1 and U3 switchable
1 kΩ, reference measurement element: 1 kΩ
1 kΩ // (10 kΩ + 11.225 nF + 579 Ω), reference measurement element:1 kΩ
1.5 kΩ // 0.15 μF, reference measurement element: 1.5 kΩ
2 kΩ, reference measurement element: 2 kΩ
375 Ω // 0.22 μF + 500 Ω, reference measurement element: 500 Ω
1 kΩ // 10 kΩ + 0.015 μF, reference measurement element: 1 kΩFor voltmeter calibration
150 Ω, reference measurement element: 150 Ω
150 Ω // 1.5 μF, reference measurement element: 150 Ω
Resistance: ±0.1 %, capacitor 0.15 μF: ±2 %, others: ±1 %Input voltage vs. output voltage ratio: logical value ± 5 %(according to IEC 60990 Annex L and F)
Input voltage vs. output voltage ratio: logical value ± 5 %Reference measurement element (resistance) ± 1 %Input voltage vs. output voltage ratio: logical value ± 5 %*1 Current measurements may not be stable due to the effects of the power supply line waveform or the wiring environment between the product and the EUT.

20

● Measurement circuit network(NetworkA IEC 60990 Fig. 3 U1 measurement)
A

RS
1.5kΩ

B

CS
0.22μF

A

U

B

Rb
500Ω

Rb
1.5kΩ

● Measurement circuit network(NetworkB-U1 IEC 60990 Fig. 4 U2 measurement)
A
B

R1
10kΩ

Rb
500Ω

RS
1.5kΩ

B

Rb
500Ω

C1
0.022μF

R1
10kΩ

RS
1.5kΩ

B

B

C1

0.022μF

CS
0.22μFR2 10kΩ
RS
1.0kΩ

C2
0.015μF±5％U● Measurement circuit network(NetworkPCC-1)
A

R3
20kΩ

Rb
500Ω

U

● Measurement circuit network(NetworkI IEC 60601-1)
A● Measurement circuit network(NetworkC IEC 60990 Fig. 5 U3 measurement)A● Measurement circuit network(NetworkG IEC 60745)

B

U

CS
0.22μF

U1

U

Rb
2kΩ

● Measurement circuit network(NetworkB-U2 IEC 60990 Fig. 4 U1 measurement)

A

C1
0.15μF

A

CS
0.22μFRS
1.5kΩ

● Measurement circuit network(NetworkF IEC 61029, UL)

C3
9.1nF

C2
6.2nF

● Measurement circuit network(NetworkD Electrical Appliances andMaterials Safety Act single frequency)

U

B

RS
150Ω

U

● Measurement circuit network(NetworkPCC-2 IEC60598-1)

A

A

Rb
1kΩ

Rs
150Ω

U

C1
1.5μF

U

B

B

● Measurement circuit network(NetworkE Electrical Appliances andMaterials Safety Act multiple frequencies)
R2 10kΩC2
11,225nF

A
B

Rb
1kΩ

R3
579Ω

U

21

Specifications[Measurement section]

The range varies by network.

Item
Range 1
Range 2Range 3Range 4
Range switching
Measurement range
*1

Auto
Fix
Bandwidth switching
NormalExpandDC
RMS
Range 1Peak

0.1 Hz ≤ f < 15 Hz
15 Hz ≤ f ≤ 100 kHz
100 kHz < f ≤ 1 MHz
0.1 Hz ≤ f < 15 Hz
15 Hz ≤ f ≤ 1 kHz
1 kHz < f ≤ 100 kHz
100 kHz < f ≤ 1 MHz

DC
RMS
Range 2
Peak
Total accuracy *2(when network A, B,
or C is used) *3

0.1 Hz ≤ f < 15 Hz
15 Hz ≤ f ≤ 100 kHz
100 kHz < f ≤ 1 MHz
0.1 Hz ≤ f < 15 Hz
15 Hz ≤ f ≤ 1 kHz
1 kHz < f ≤ 100 kHz
100 kHz < f ≤ 1 MHz

DC
RMS
Range 3Peak

0.1 Hz ≤ f < 15 Hz
15 Hz ≤ f ≤ 100 kHz
100 kHz < f ≤ 1 MHz
0.1 Hz ≤ f < 15 Hz
15 Hz ≤ f ≤ 1 kHz
1 kHz < f ≤ 100 kHz
100 kHz < f ≤ 1 MHz

DC
RMS
Range 4Peak
Input resistance
Input capacitanceCommon mode rejection ratio
Offset cancel function

0.1 Hz ≤ f < 15 Hz
15 Hz ≤ f ≤ 100 kHz
100 kHz < f ≤ 1 MHz
0.1 Hz ≤ f < 15 Hz
15 Hz ≤ f ≤ 1 kHz
1 kHz < f ≤ 100 kHz
100 kHz < f ≤ 1 MHz

TOS9303LC
DC, RMS: 1.00 μA(min.) to 200.00 μA(max), Peak: 1.00 μA(min.) to 282.00 μA(max)DC, RMS: 12.50 μA(min.) to 2000.0 μA(max), Peak: 17.50 μA(min.) to 2830.0 μA(max)DC, RMS: 125.0 μA(min.) to 20.000 mA(max), Peak: 175.0 μA(min.) to 28.300 mA(max)DC, RMS: 1.250 mA(min.) to 100.00 mA(max), Peak: 1.750 mA(min.) to 100.00 mA(max)Auto or Fix selectable. If a measurement falls outside the measurement range of each range, the measured
value blinks as a warning.
The range is set automatically according to the measurements.
For TC and PCC measurements, the measurement range is selected automatically according to the UPPER
value. For meter measurements, the range is fixed to the specified range.
Can be expanded to a bandwidth that allows measurements from 0.1 Hz, which is required in themeasurement of medical instruments and the like.
Normal measurement bandwidth: 15 Hz to 1 MHz
Expands the measurement range to 0.1 Hz to 1 MHz±(5.0 % of reading + 2 μA)±(10.0 % of reading + 2 μA)±(7.0 % of reading + 2 μA)±(10.0 % of reading + 2 μA)±(10.0 % of reading + 10 μA)±(10.0 % of reading + 10 μA)±(10.0 % of reading + 10 μA)±(20.0 % of reading + 10 μA)±(5.0 % of reading + 20 μA)±(10.0 % of reading + 10 μA)±(7.0 % of reading + 8 μA)±(10.0 % of reading + 10 μA)±(10.0 % of reading + 10 μA)±(10.0 % of reading + 10 μA)±(10.0 % of reading + 10 μA)±(20.0 % of reading + 10 μA)±(5.0 % of reading + 50 μA)±(10.0 % of reading + 20 μA)±(7.0 % of reading + 20 μA)±(10.0 % of reading + 20 μA)±(10.0 % of reading + 50 μA)±(7.0 % of reading + 50 μA)±(10.0 % of reading + 50 μA)±(20.0 % of reading + 50 μA)±(5.0 % of reading + 0.5 mA)±(10.0 % of reading + 0.2 mA)±(7.0 % of reading + 0.2 mA)±(10.0 % of reading + 0.2 mA)±(10.0 % of reading + 0.5 mA)±(7.0 % of reading + 0.5 mA)±(10.0 % of reading + 0.5 mA)±(20.0 % of reading + 0.5 mA)
1 MΩ ± 1 %200 pF or less (internal voltmeter input capacitance: 100 pF or less)
10 kHz or less: 60 dB or more, 10 kHz to 1 MHz: 40 dB or more
Cancels up to 10 mA of the unnecessary current from measurements. OFF function available.

*1 Voltmeter band expansion is possible when network I is selected.
*2 0.1 Hz ≤ f < 15 Hz is for when voltmeter band expansion (VoltMeter BandWidth) is set to Expand. Requires at least 120 second of test time.
*3 A value converted to current for measurements using Network A, B, C or H with voltmeter accuracy of this product as the reference.
If a network other than A, B, C or H is used, calculate as follows:
For Network D, E, or I, the ■ part of ±(□% of reading + ■ A) is half the value.
For F, the ■ part is one-third the value.
For G, the ■ part is one-fourth the value.
For PCC-1 or PCC-2, the ■ part is 3.3 times the value.

22

[Judgment function]

The range varies by network.

Item

UPPER FAIL

Behavior basedon judgment
LOWER FAIL

PASS

Judgment method
Display
Buzzer
SIGNAL I/O
Judgment method
Display
Buzzer
SIGNAL I/O
Judgment method
Display
Buzzer
SIGNAL I/O

RANGE 1RANGE 2RANGE 3
RANGE 4Lower Setting range
Judgment accuracy

Upper Setting
range

TOS9303LC
Judgment starts after the judgment delay (Judge Delay). Buzzer volume level can be set in the range of 0 (OFF) to 10 forpass and fail separately. In an auto test, the buzzer is valid only for the judgment that takes place at the end of the program.
UPPER FAIL results when a current greater than or equal to the upper limit (Upper) is detected.
“Upper-FAIL” is displayed.
On
The Upper-FAIL signal is generated continuously until a STOP signal is received.
LOWER FAIL results when a current less than or equal to the lower limit (Lower) is detected.
“Lower-FAIL” is displayed.
On
The Lower-FAIL signal is generated continuously until a STOP signal is received.
PASS judgment is made if Upper-FAIL or Lower-FAIL has not occurred when the test time elapses.
“PASS” is displayed.
On (fixed to 50 ms)
The PASS signal is generated for the length of time specified by the Pass Hold setting.
If Pass Hold is set to Infinity, the PASS signal is generated continuously until a STOP signal is received.
DC, RMS: 0.1 μA(min.) to 200 μA(max), Peak: 0.1 μA(min.) to 282 μA(max)DC, RMS: 15.1 μA(min.) to 2.00 mA(max), Peak: 21.3 μA(min.) to 2.83 mA(max)DC, RMS: 151 μA(min.) to 20.00 mA(max), Peak: 213 μA(min.) to 28.3 mA(max)DC, RMS: 1.51 mA(min.) to 100 mA(max), Peak: 2.13 mA(min.) to 100 mA(max)A value that is -1 digit from the upper setting range.
Conforms to total accuracy(Read “reading” as “upper setting” of total accuracy.)[Timer function]
Item

TOS9303LC

Judgment delay (Judge Delay)
Test time

Setting range
Accuracy
Setting range
Accuracy

1 s to 1000 s, OFF±(100 ppm of setting + 20 ms)
1 s to 1000 s, OFF±(100 ppm of setting + 20 ms)[Other specifications]
Item
Voltage conversion

Setting range
Resolution

Power supply line polarity selection
Single fault mode (Condition) selection
Ground check
Measurement check
Supply voltage measurementAC
LINE (EUT)
Supply current measurementAC
LINE (EUT)Power measurement(active power)

Voltagemeasurement
across the A
and B terminals

Measurement
terminal

Power supply
for the EUT

Measurement
range
Input impedance
Accuracy *1
SELV detection

Measurement range
Resolution
Accuracy
Measurement range
Resolution
Accuracy
Measurement range
Accuracy
DC
RMS
Peak

TOS9303LC
Displays the estimated current converted with the preset supply voltage (Conv Voltage), based on the voltage supplied to
the EUT and the measured current. (This is invalid in meter mode.)
80.0 V to 300.0 V, OFF
0.1 V
Set the polarity of the power supply line to supply to the EUT to positive or negative.
Set the EUT single fault mode to normal, neutral line disconnection (Fault Neu),or protective ground wire disconnection (Fault PE).
In the touch current test between the enclosure and power supply line, if the EUT enclosure is grounded,
Contact-FAIL occurs.
Checks the measurement function by shorting across the A and B terminals.
If an error is found, the protection function is activated.
80.0 V to 250.0 V
0.01 V±(3 % of reading + 1 V)
0.1 A to 15.00 A
0.001 A±(5 % of reading + 30 mA)
10 W to 1500 W±(5 % of reading + 8 W) (with the supply voltage at 80 V or more, at a load power factor of 1)
10.00 V to 300.0 V
10.00 V to 300.0 V
15.00 V to 430.0 V
Approx. 40 MΩ
±(3 % of reading + 2 V) (measurement range fixed to AUTO)
Set a voltage for detecting SELV. When the value is exceeded, the DANGER LED lights.
10.0 V to 99.9 V, OFF
0.1 V

Setting range
Resolution
Between the A and
250 V
B terminals
Rated voltage
Between the terminals
250 V
and chassis
Rated current
100 mA
Measurement category
CAT-II
Valid terminal display
Terminals valid for measurement are indicated on the display.
110% terminal
Terminal for supplying 110% voltage of the AC line.
Nominal voltage range
100 V to 240 V, 50 Hz/60 Hz
Input voltage range
85 Vac to 250 Vac(allowable voltage range)
Rated output capacity
1500 VA
Maximum operating current
15 A (Overcurrent protection is activated at approximately 15.7 A.)
Inrush current
70 Apeak max. (within 20 ms)*1 If voltage is measured with the A and B terminals open, measurements will be easily affected by induced voltage.

23

Specifications■ Interface (Common)
Item
REMOTE
SIGNAL I/O
Function
Input specifications
High-level input voltage
Low-level input voltage
Low-level input current
Input time width
Output method
Output withstanding voltage
Outputspecifications Output saturation voltage
Maximum output current
STATUS OUT
Positive terminal (red)Negative terminal (black)
SCANNERUSB (host)
Remote control
RS232C

USB (device)LAN

HardwareMessage terminator
HardwareMessage terminator
Device class
HardwareCompliant standards
Communication protocol
Message terminator

Display

TOS9300
TOS9301
TOS9301PD
TOS9302
TOS9303
TOS9303LCMINI DIN 9-pin connector. Connect the following option to remotely control the starting and stopping of tests.
• Remote control box RC01-TOS, RC02-TOS• High voltage test probe HP01A-TOS, HP02A-TOS (when the test voltage is 4 kVac 5 kVdc or less)D-sub 37-pin connector. For the pin arrangement
Enable/disable interlock, recall setup memories, recall auto test programs, start/stop testing, monitor the test and voltage
generation status, monitor the test status, monitor judgment results, monitor the step execution status of auto tests,
monitor the activation status of protection functions
The input signals are all low-active control. The input terminal is pulled up to +12 V by a resistor.
Leaving the input terminal open is equivalent to applying a high level signal.
11 V to 15 V
0 V to 4 V-5 mA max.
5 ms min.
Open collector output (4.5 Vdc to 30 Vdc)
30 VdcApprox. 1.1 V (25 °C)
400 mA(TOTAL)
Output terminal of an option product.
Outputs +24 V. Use Status Out of CONFIG settings to set the output conditions.
+24 V circuit common.
MINI DIN 8-pin connector. Terminal for the optional TOS9320 high voltage scanner.
The maximum number of connections is 4 devices(16 channels).
Standard type A socket, FAT32, 32 GB or lessComplies with the USB 2.0 specifications; data rate: 12 Mbps (full speed)
All functions except turning on and off the power, key lock, and auto test can be remotely controlled.
D-sub 9-pin connector (EIA-232D compliant)Baud rate: 9600, 19200, 38400, 57600, 115200 bps
Data length: 8 bits; stop bits: 1 bit; parity bit: none, flow control: none/CTS-RTS
LF during reception, LF during transmission.
Standard Type B connector. Complies with the USB 2.0 specifications; data rate: 480 Mbps (high speed)
LF or EOM during reception, LF + EOM during transmission.
Complies with the USBTMC-USB488 device class specifications.
IEEE 802,3 100Base-TX/10Base-T Ethernet. Auto-MDIX compliant.IPv4, RJ-45 connector.
LXI 1.5 Core Specification 2011
VXI-11, HiSLIP, SCPI-RAW, SCPI-Telnet
VXI-11, HiSLIP: LF or END during reception, LF + END during transmission.
SCPI-RAW: LF during reception, LF during transmission.
7-inch LCD■ Other Functions (Common)
Item
Auto test
Test condition
memorySetup memory
Program memory
Program memory (LC)Test result memory
System clock
Recordable time
Calibration period setting
Measurement display
NormalMaximum and minimum value display
Double Action
Momentary
Start LongPASS judgment display time (Pass Hold)

Test start
methodSTOP signal disable (Fail Mode)
Key lock

24

TOS9300
TOS9301
TOS9301PD
TOS9302
TOS9303
TOS9303LC
Auto execution by combining ACW, DCW, IR, and EC. For LC, a combination is possible only using TC, PCC, and Patient.
Up to 51 test conditions (ACW, DCW, IR, EC, PD, LC) can be saved.
Up to 100 program (ACW, DCW, IR, EC, PD) combinations, each containing 100 steps, can be saved.
Up to 100 program (TC, PCC, Patient) combinations, each containing 100 steps, can be saved.
Records up to 1000 latest test result of independent tests and auto tests. These are cleared when the power is turned off.
Test results can be saved in CSV format to a USB memory device.
For recording the calibration time and test times
Up to year 2038
Displays a warning at power-on when the specified period passes. Select whether to activate a protection function or only
display a warning in the display area when a warning occurs.
Maximum and minimum measurements can be displayed.
Displays measurements during a test. Maximum and minimum values are not held.
Displays the maximum current measurement for withstanding voltage (ACW/DCW) tests, the minimum resistancemeasurement for insulation resistance (IR) tests, the resistance measurement or voltage measurement for earth continuity(EC) tests.
When you press STOP, “READY” is shown for 0.5 seconds. A test starts only when you press START within this period.
Tests are only executed while the START switch is held down.
A test starts only when the START switch is held down for at least 1 second.
Set the time to hold the pass judgment result display (0.05 s to 10.00 s) or hold it until STOP is pressed (Infinity).
It is possible to set the instrument so that fail judgment results and PROTECTION mode cannot be released from a device
connected to the SIGNAL I/O connector or REMOTE connector.
Lock the operation of the keys to prevent changing the settings or overwriting memory or programs by mistake.

■ Other Functions (Common)
Item
Protection functions
InterlockPower Supply
Output Error
Over Load
Over Heat
Over RatingCal
RemoteSignal I/O
Communication
Over Range
MeasureShort
Earth Fault
Scan I/F

TOS9300
TOS9301
TOS9301PD
TOS9302
TOS9303
TOS9303LC
If a protection function is activated during a test, the output is shut off and the test is stopped immediately.In an LC test,
the power supply to the EUT is stopped, and the A and B terminals are opened.Conditions that cause a protection function
to be activated are as follows.
Interlock is activated.
There is an error in the power supply section.
An output voltage outside of the following range is detected.
ACW, DCW, IR test, PD test: ±(10 % of setting + 50 V) EC test: ±(10 % of setting + 2 A)
An output power or output current outside of the following range is detected.
ACW: 550 VA, DCW: 110 W or 50 mA, IR (7200 V test): 110 W or 25 mA, IR (-1000 V test): 2 mA, EC: 240 VA, LC: AC LINEOUT current at approx. 15.7 A or power at 1600 VA.
The internal temperature of the product is abnormally high.
During a withstanding voltage test, an output current is generated for a length of time that exceeds the output time limit.
The preset calibration period is exceeded.
The REMOTE connector is connected or disconnected.
There is a change in the SIGNAL I/O connector’s ENABLE signal.
An internal communication error is occurring.
A value exceeding the maximum value of the measurement range is detected.
An error is detected in the LC test measurement check.
A relay operation error is detected in an LC test.
When the grounding mode (GND) is set to Guard, abnormal current flows from the high voltage output of this product toground.
While scanning, the interface cable is disconnected. Or, the channel-assigned scanner is not detected.

■ General Specifications (Common)
Item
Backup battery life
Installation location
Spec guara- Temperaturenteed range
Humidity
Temperature
Environment
Operatingrang
Humidity
Temperature
Storagerange
Humidity
Nominal voltage range(allowable voltage range)
No load(READY state)
Power supplyPower
consumption Rated load
Allowable frequency range
Insulation resistance (between AC LINE and chassis)
Withstanding voltage (between AC LINE and chassis)
Earth continuity
WeightAccessories

Electromagnetic compatibility *1 *2

Safety *1

TOS9300
TOS9301
TOS9301PD
TOS9302
3 years (at 25 °C)
Indoors, 2000 m or less
5 °C to 35 °C (41 °F to 95 °F)(18 °C to 28 °C for partial discharge tests)
20 %rh to 80 %rh (20 %rh to 70 %rh for partial discharge tests)(no condensation)
0 °C to 40 °C (32 °F to 104 °F)
20 %rh to 80 %rh (no condensation)-20 °C to 70 °C (-4 °F to 158 °F)
90 %rh or less (no condensation)

TOS9303

TOS9303LC

100 Vac to 120 V, 200 V to 240 V (90 Vac to 132 V, 170 V to 250 V)
100 VA or less
800 VA max.
47 Hz to 63 Hz
30 MΩ or more (500 Vdc)
1500 Vac, 1 minute, 20 mA or less
25 Aac, 0.1 Ω or less
TOS9300:Approx. 17 kg (37.5lb.), TOS9301:Approx. 18 kg (39.7lb.), TOS9301PD:22 kg (48.5lb.),
TOS9302:Approx. 20 kg (44.1lb.), TOS9303:Approx. 21 kg (46.3lb.), TOS9303LC:Approx. 22 kg (48.5lb.)
Power cord (1 pc., *length: 2.5 m : The attached power cord varies depending on the shipment destination.),High-voltage test lead: TL31-TOS (1 pair), SIGNAL I/O plug (1 set), High-voltage warning sticker (1 pc.),
Setup Guide (1 copy), CD-ROM (1 disc), Safety Information (1 copy),
Heavy object warning label (1 pc., *Not included with the TOS9300),
Test leads for earth continuity test: TL13-TOS (1 pair., *TOS9302, TOS9303,TOS9303LC only),[TOS9303LC only: Spare fuse (1 pc.), Test leads for leakage current test (2 red, 1 black), Flat probe (1 sheet)]Complies with the requirements of the following directive and standards.
EMC Directive 2014/30/EU
EN 61326-1 (Class A *3), EN 55011 (Class A *3, Group 1 *4), EN 61000-3-2, EN 61000-3-3
Applicable under the following conditions
The maximum length of all cabling and wiring connected to the product must be less than
2.5 m.Shielded cables are being used when using the SIGNAL I/O.The high-voltage test lead
TL31-TOS is in use.Electrical discharges are applied only to the EUT.
Complies with the requirements of the following directive and standards.
Low Voltage Directive 2014/35/EU *2, EN 61010-1 (Class I *5 , Pollution Degree 2 *6)*1 Does not apply to specially ordered or modified products.
*2 Only on models that have CE/UKCA marking on the panel.
*3 This is a Class A instrument. This product is intended for use in an industrial environment. This product may cause interference if used in residential areas. Such use must be avoided
unless the user takes special measures to reduce electromagnetic emissions to prevent interference to the reception of radio and television broadcasts.
*4 This is a Group 1 instrument. This product does not generate and/or use intentionally radio-frequency energy, in the form of electromagnetic radiation, inductive and/or capacitive
coupling, for the treatment of material or inspection/analysis purpose.
*5 This is a Class I instrument. Be sure to ground this product's protective conductor terminal. The safety of this product is guaranteed only when the product is properly grounded.
*6 Pollution is addition of foreign matter (solid, liquid or gaseous) that may produce a reduction of dielectric strength or surface resistivity. Pollution Degree 2 assumes that only nonconductive pollution will occur except for an occasional temporary conductivity caused by condensation.

25

Specifications■ High Voltage Scanner[Basic specifications]
Item
Maximum operating voltage

AC
DC

Number of channels
Maximum connections
Contact check function
DANGERCHANNEL
EXTERNAL
POWER

Indicators

TOS93205 kV
7.2 kV
4 (Each channel can be set to high, low, or open.)
4 units
Channel numbers are assigned according to the order in which connections are made to the TOS9300 series tester.
1st scanner: CH1 to CH4, 2nd scanner:CH5 to CH8, 3rd scanner: CH9 to CH12, 4th scanner: CH13 to CH16
Available
Lights up in sync with the TOS9300 series tester
Indicates the setting of each channel with color. Red: High, Green: Low, Orange: Contact being checked, Off: OpenLights up when external control is on
Lights up when the power is on[Interface and other functions]
Item

TOS9320
EXTERNAL I/O switch for switching the following controls.
Control switch
ON: External control through the CONTROLLER INTERFACE OFF: Control from the TOS9300 series tester
CONTROLLER INTERFACE (external control)
D-sub 25-pin connector.
Function
Sets each channel to high or low or all channels to open. Outputs the setting of each channel.
The input signals are all low-active control. The input terminal is pulled up to +12 V by a resistor. Leaving the input terminal
open is equivalent to applying a high level signal.
High-level input voltage
11 V to 15 V
Input
Low-level input voltage
0 V to 4 V
Low-level input current-5 mA max.
Input time width
5 ms min.
Output method
Open collector output (4.5 Vdc to 30 Vdc)
Output withstanding voltage 30 Vdc
OutputOutput saturation voltage
Approx. 1.1 V (25°C, 77°F)
Maximum output current
400 mA (TOTAL)
TOS9300 series tester interface
MINI DIN 8-pin connector. Accuracy guaranteed up to 4 units (16 channels)[General specifications]
Item

TOS9320
Installation location

Temperature
Humidity
Environment
Temperature
Operating range
Humidity
Temperature
Storage range
Humidity
Nominal voltage range(allowable voltage range)
Power supply
Power consumption
Allowable frequency range
Insulation resistance (between AC LINE and chassis)
Withstanding voltage (between AC LINE and chassis)
Earth continuity
WeightSpec guaranteed
range

Accessories

Electromagnetic compatibility *1 *2

Safety *1

Indoors, 2000 m or less
5°C to 35°C (41°F to 95°F)
20%rh to 70%rh (no condensation)
0°C to 40°C (32°F to 104°F)
20%rh to 80%rh (no condensation)-20°C to 70°C (-4°F to 158°F)
90%rh or less (no condensation)
100 Vac to 240 Vac (90 Vac to 250 Vac)
50 VA max.
47 Hz to 63 Hz
30 MΩ or more (500 Vdc)
1500 Vac for 1 minute, 20 mA or less
25 Aac/0.1 Ω or lessApprox. 8 kg (17.6 lb)
Power cord (1 pc., length: 2.5 m: The attached power cord varies depending on the shipment destination.)
High-voltage test lead [TL31-TOS] (8 red), Lead for high voltage parallelconnection TL33-TOS (1 pair),Interface cable (1 pc.), CONTROLLER INTERFACEplug (1 set), High-voltage warningsticker (2 pc.),
Channel labels (For the panel (1 sheet), For the test leads (1 sheet)), User’s manual (1 copy), Safety Information (1 copy)
Complies with the requirements of the following directive and standards.
EMC Directive 2014/30/EU, EN 61326-1 (Class A *3), EN 55011 (Class A *3, Group 1 *4),
EN 61000-3-2, EN 61000-3-3
Applicable under the following conditions
The maximum length of all cabling and wiring connected to this product is less than 2.5 m.
A shielded cable is used for the connection to the CONTROLLER INTERFACE. The high-voltage test lead TL31-TOS is in
use.Electrical discharges are applied only to the EUT.
Complies with the requirements of the following directive and standards.
Low Voltage Directive 2014/35/EU *2, EN 61010-1 (Class I *5, Pollution Degree 2 *6)*1 Does not apply to specially ordered or modified products.
*2 Only on models that have CE/UKCA marking on the panel.
*3 This is a Class A instrument. This product is intended for use in an industrial environment. This product may cause interference if used in residential areas. Such use must be avoided
unless the user takes special measures to reduce electromagnetic emissions to prevent interference to the reception of radio and television broadcasts.
*4 This is a Group 1 instrument. This product does not generate and/or use intentionally radio-frequency energy, in the form of electromagnetic radiation, inductive and/or capacitive
coupling, for the treatment of material or inspection/analysis purpose.
*5 This is a Class I instrument. Be sure to ground this product's protective conductor terminal. The safety of this product is guaranteed only when the product is properly grounded.
*6 Pollution is addition of foreign matter (solid, liquid or gaseous) that may produce a reduction of dielectric strength or surface resistivity. Pollution Degree 2 assumes that only nonconductive pollution will occur except for an occasional temporary conductivity caused by condensation.

26

External Dimensions (Unit:mm(inches))

268.8 (10.58)

41.2

60
4- 29
(2.36) (diameter of rubber feet )(1.62)

398.8 (15.7)

60(2.36)

33(1.3)

364 (14.33)
33
(1.3)

MAX550 (21.65)
500 (19.69)

MAX440 (17.32)
430 (16.93)

MAX20(0.79)TOS9301PD
423.8 (16.69)

TOS932060 4- 29
(2.36) (Foot diameter)40(1.57)

272.5(10.73)

330(12.99)

364 (14.33)

50(1.97)

33(1.3)
MAX565 (22.24)
525 (20.67)

MAX440 (17.32)
430 (16.93)

MAX150 (5.9)
132 (5.2)

MAX20(0.79)TOS9302

MAX440(17.32)
430(16.93)

TOS930360(2.36)

4- 29(diameter of rubber feet )364 (14.33)

33
(1.3)

398.8 (15.7)

MAX5
(0.2)

33
(1.3)

(1.62)MAX390(15.35)
370(14.57)

MAX540 (21.26)
500 (19.69)

MAX20(0.79)

MAX440 (17.32)
430 (16.93)

MAX155 (6.1)
132 (5.2)

41.2

4- 29
57.5 (diameter of rubber feet )(2.26)

50(1.97)

33
(1.3)

41.2

(1.62)

MAX440 (17.32)
430 (16.93)

MAX155 (6.1)
132 (5.2)

MAX20(0.79)

MAX155 (6.1)
132 (5.2)

MAX410 (16.14)
370 (14.57)

4- 29(diameter of rubber feet )364 (14.33)

33
(1.3)

(1.62)TOS9303LC

88(3.46)
MAX105(4.13)

41.2

TOS930133(1.3)

TOS9300

27

OptionHigh-Voltage Scanner■ TOS9320

High-Voltage Scanner for TOS9300 Series forMulti-Channel Testing Systems
The high-voltage scanner TOS9320 is a specialized option for the TOS9300 series, capable of
rapidly distributing test voltage from the main unit to multiple testing points for withstanding voltage
and insulation resistance testing. Channels can be controlled with an external device through theback panel CONTROLLER INTERFACE connector. Remote control is not limited to the TOS9300
series, but is also compatible with previous models such as the TOS5300 series hipot/insulation
resistance tester. The TOS9320 high-voltage scanner is an essential tool for the automation ofhighly reliable testing of electronic devices among multiple channels.

Features
Dimensions(Maximum) / Weight430(16.93")(440(17.32"))W×88(3.46")(105(4.13"))H×
370(14.57")(390(15.35"))Dmm/ 8 kg(17.6 lbs)

■Output can be expanded to four channels with one high-voltage scanner. The electric potential of each channel
can be arbitrarily set to high, low, or open, and can be tested at any of these four points.
■Up to four high voltage scanners (total 16 channels) can be connected to each unit.
■Output of each channel and contact with testing points can be easily monitored.

Remote Control Box

DIN Conversion Cable

Warning Light Unit

The remote control box can be used to start and stop
withstanding voltage and insulation resistance tests.
One model is for use with one hand, and the othermodel is for use with two hands.

The DIN (5 pin → 9 pin) conversion cable is used forconnection with the following optional products andthe TOS9300 series.

The warning light unit indicates when the TOS9300
is performing a test, making clear that a test is inprogress from a distance.

• Remote control box(RC01-TOS/RC02-TOS)• High voltage test probe(HP01A-TOS/HP02A-TOS)■ PL02A-TOS (for DC24 V)■ RC01-TOS (One-hand operation/1.5 m)■ DD-5P/9P Adaptor/DIN to Mini DIN*DD-5P/9P DIN conversion cable required for connection
with TOS9300 series.

■ RC02-TOS (Two-hand operation/1.5 m)

Multi Outlet
The multi outlet OT01-TOS can be used to connect tomain plug standards world wide by connecting to the
AC LINE OUT terminal block of the EUT power supply■ OT01-TOS
for TOS9303LC*DD-5P/9P DIN conversion cable required for connection
with TOS9300 series.

Unit:mm(inches)

KRB100-TOS
KRB100-TOS

28

88(3.46)

88(3.46)
6(0.24) 76(2.99)50(1.97)
99(3.9)50(1.97)
99(3.9)

Unit:mm(inches)
Unit:mm(inches)

46465(
18 1) 5(18.31)
479. 2( .347
9.
18.87) 2(18.87)

6(0.24) 76(2.99)

KRB2-TOS
KRB2-TOS

24.5(0.96)

24.5(0.96)

46
46 0(
18.1 0(18.11)
479.
479. 2( 1)
18.87) 2(18.87)

57(2.24)

KRB2-TOS

TOS9320*DD-5P/9P DIN conversion cable required for connection
with TOS9300 series.

Unit:mm(inches)

132(5.2)

Unit:mm(inches)

37.5(1.48)

Unit:mm(inches)

KRB100-TOS

37.5(1.48)

456.
4(17477.8( .97)
18.81)

456.
4(17477.8( .97)
18.81)

57(2.24)456.
4(17477.8( .97)
18.81)

100(3.94)
149(5.87)

456.
4(17
477.8( .97)
18.81)EIA Standard
Bracket Model Name
KRB3-TOS

24.5(0.96)TOS9300
TOS9301
TOS9301PD
TOS9302
TOS9303
TOS9303LC

JIS Standard
Bracket Model NameKRB150-TOS

100(3.94)
149(5.87)■ HP02A-TOS (Max.AC4 kV • DC5 kV/3.5 m)

Complied Model

24.5(0.96)■ HP01A-TOS (Max.AC4 kV • DC5 kV/1.8 m)

Rack Mount Bracket

132(5.2)

High-Voltage Test Probe
This probe is used for generating test voltage. Thisprobe has been designed to only generate test voltage
when the user operatates the probe with both hands inorder to prevent accidental test voltage generation.

Unit:mm(inches)
Unit:mm(inches)Others
High-Voltage Digital Voltmeter

UL Resistance Load

●Measurement of high voltages (AC/DC) of up to 10 kV
maximum ●Large 4 1/2 digit LED display●High measuring accuracy and input resistance●Light weight of only 3 kg ●Compact design●Excellent ease of maintenanceThis device is described in section 125, paragraph
2-1B1 of UL1492. The RL01-TOS is a variable load
resistor for checking the output voltage of hipot testers
used in dielectric strength testing on production lines.
(C omplies with U L regulations inc luding U L1270,
UL1409 and UL1410.)■ 149-10A

SpecificationType
DC Voltage

AC Voltage

Power
Dimensions(MAX)
WeightAccessories■ RL01-TOS

Specification
Double integration type.
(sampling cycle: 3 times/sec)
Measuring range: 0.500 kV to 10,000 kV
Accuracy: ±(0.5 % of reading + 0.03 % ofrange) Input resistance: 1000 MΩ ± 2 %Measuring range: 0.500 kV to 10,000 kV
Accuracy: ±(1 % of reading + 0.05 % ofrange) Frequency characteristics: 50/60
Hz (sine wave rms value display of meanvalue response)
Input resistance: 1000 MΩ ± 2%
100 V ±10%, Approx. 10 VA
134[5.27 inch]W × 164[6.46 inch]H ×
270[10.63 inch]D mm(140[5.51 inch]W × 189[7.44 inch]H ×
350[13.78 inch]D mm)
Approx. 3 kg (6.6 lbs)
TL05-TOS High voltage test leads: 1
HTL2.5DH High voltage test lead: 1

Resistors

ResistanceAccuracy
Maximum
Operating
VoltagMaximum
Overload
Voltage
Dimensions(MAX)
WeightAccessories

Calibration Resistor for
Insulation Resistance Tester
The 929 Series Standard Resistors are for calibrationof Insulation Testers.

■ 929-1M (1 MΩ)■ 929-10M (10 MΩ)■ 929-100M (100 MΩ)Specification
120 kΩ/ 159 kΩ/ 210 kΩ/ 279 kΩ/ 369 kΩ/489 kΩ/ 648 kΩ/ 858 kΩ/ 1,137 kΩ/
1,500 kΩ/ 1,989 kΩ/ 2,148 kΩ
+1 %, -0 % of nominal value when set to
120 kΩ, ±1 % of nominal value when set toother values
1300 V (continuous rating)1400 V for 5 seconds (application may not
be repeated within 1 minute)200[7.87 inch]W × 100[3.94 inch]H ×
260[10.24 inch]D mm(210[8.27 inch]W × 120[4.72 inch]H ×
295[11.61 inch]D mm)
Approx. 2.6 kg (5.73 lbs)
TL04-TOS High-voltage test lead: 2
TL05-TOS High-voltage test lead: 1

1 MΩ(929-1M)/ 10 MΩ(929-10M)
Nominal
100 MΩ(929-100M)
ResistanceAccuracy of
1 % at 25 ˚C ±10 ˚CResistance
Temperature
100 ppm/˚C or better
Coefficient
Voltage
1 ppm/V or better
CoefficientWorking
1.2 kV
voltage rating
Dimensions 64[25.20 inch]W × 24[9.45 inch]H ×(MAX)
30[11.81 inch]D mm*The 929 series standard resistors can not be installed
directly to the TOS series. Please use the test lead forconnection.

29

Lineup Overview●Electrical Safety Multi-analyzer
Test items
A

Model

A

AC Withstanding DC Withstanding
Voltage (AC Hipot) Voltage (DC Hipot)

Insulation
Resistance

Earth Continuity(Ground Bond)

TOS9300●

TOS9301●●●

TOS9301PD●●●

TOS9302●

TOS9303

●

●

●

●

TOS9303LC

●

●

●

●

Leakage Current

Partial Discharge

●

●
●

●

●OptionDescription

Model

High-voltage scanner

TOS9320

4 channel high-voltage scanner with contact check function; can be used standalone

RC01-TOS

One-hand operation/1.5 m

RC02-TOS

Both-hands operation/1.5 m

DD-5P/9P

It is required when RC01-TOS/RC02-TOS, HP01A-TOS/HP02A-TOS and HP21-TOS is used

HP01A-TOS

Max.AC4 kV • DC5 kV/1.8 m

Remote control box
DIN conversion cable
High-voltage test probe

HP02A-TOS

Max.AC4 kV • DC5 kV/3.5 m

Warning light unit

PL02A-TOS

for DC24 V

Multi outlet

OT01-TOS

for TOS9303LCKRB150-TOS

JIS standard (mm)KRB3-TOSEIA standard (inch) for TOS9300/9301/9301PD/9302/9303/9303LCKRB100-TOS

JIS standard (mm)KRB2-TOSEIA standard (inch) for TOS9320

Rack mount bracket

30

Remarkfor TOS9300/9301/9301PD/9302/9303/9303LC

for TOS9320

Memo

31

● Distributor/Representative

1-1-3, Higashiyamata, Tsuzuki-ku, Yokohama, Kanagawa, 224-0023, Japan
Phone:(+81)45-593-0200, Facsimile:(+81)45-593-7591, https://global.kikusui.co.jp/

KIKUSUI AMERICA, INC.
3625 Del Amo Blvd., Suite 160 Torrance, CA90503
Phone: 310-214-0000, Facsimile: 310-214-0014

KIKUSUI TRADING (SHANGHAI) Co., Ltd.
Room 305, Shenggao Building, No.137, Xianxia Road, Shanghai City, China
Phone: 021-5887-9067, Facsimile: 021-5887-9069

KIKUSUI ELECTRONICS EUROPE GmbH
Grossenbaumer Weg 8, 40472 Duesseldorf, Germany
Phone: +49(211)54257600, E-mail: info@kikusuieurope.de
For our local sales distributors and representatives, please refer to "sales network" of our website.

Printed in Japan■ All products contained in this catalogue are equipment and devices that are premised on use under the supervisionof qualified personnel, and are not designed or produced for home-use or use by general consumers. ■ Specifications,design and so forth are subject to change without prior notice to improve the quality. ■ Product names and prices
are subject to change and production may be discontinued when necessary. ■ Product names, company names andbrand names contained in this catalogue represent the respective registered trade name or trade mark. ■ Colors,
textures and so forth of photographs shown in this catalogue may differ from actual products due to a limited fidelity inprinting. ■ Although every effort has been made to provide the information as accurate as possible for this catalogue,certain details have unavoidably been omitted due to limitations in space. ■ If you find any misprints or errors in thiscatalogue, it would be appreciated if you would inform us. ■ Please contact our distributors to confirm specifications,price, accessories or anything that may be unclear when placing an order or concluding a purchasing agreement.

Issue:Jan.2024 2024010.3KPRIEC61