INSTRUCTION MANUAL

4-range High voltage insulation resistance tester

KEW 3126

Contents
1. Safety warnings ··········································································· 1
2. Feature ························································································ 5
3. Specification ················································································ 6
4. Instrument layout
4-1 Instrument layout · ································································· 9
4-2 LCD display ········································································· 10
5. Preparation for measurement
5-1 Checking the battery voltage · ············································· 11
5-2 Connecting test leads · ························································ 11
6. Measurement
6-1 Mains disconnection check (Voltage measurement) ··········· 12
6-2 Insulation resistance measurement ···································· 13
6-3 Continuous measurement ··················································· 16
6-4 DAR/PI measurement function · ·········································· 17
6-5 Voltage characteristics of measuring terminal · ··················· 21
6-6 Use of Guard terminal ························································· 21
6-7 Filter function · ····································································· 22
6-8 Backlight function ································································ 22
6-9 Auto-power-off function ······················································· 22
7. Battery replacement ·································································· 23
8. Accessories
8-1 Metal part for Line Probe, and replacement ························ 24
8-2 How to use the adaptor for recorder ·································· 25
8-3 Line probe with alligator clip ················································ 25

1. Safety warnings
This instrument has been designed, manufactured and tested
according to IEC 61010: Safety requirements for Electronic
measuring apparatus, and delivered in the best condition after
passed the inspection. This instruction manual contains warnings
and safety rules which must be observed by the user to ensure safe
operation of the instrument and retain it in safe condition.
Therefore, read through these operating instructions before using
the instrument.
# WARNING● R ead through and understand instructions contained in thismanual before starting to use the instrument.
● Save and keep the manual at hand to enable quick reference
whenever necessary.
● The instrument is to be used only in its intended applications.
● Understand and follow all safety instructions contained in the
manual.
It is essential that the above instructions are adhered to. Failure
to follow the above instructions may cause injury, instrument
damage and/or damage to equipment under test.
The symbol # indicated on the instrument means that the user
must refer to related parts in the manual for safe operation of the
instrument. It is essential to read the instructions wherever the #symbol appears in the manual.
# DANGERis reserved for conditions and actions that arelikely to cause serious or fatal injury.
# WARNING 	is reserved for conditions and actions that cancause serious or fatal injury.
# CAUTION is reserved for conditions and actions that cancause injury or instrument damage.
̶1̶# DANGER● N ever make measurement on the circuit in which electricalpotential to ground over 600V exists.
● D o not attempt to make measurement in the presence offlammable gasses. Otherwise, the use of the instrument may
cause sparking, which can lead to an explosion.
● Never attempt to use the instrument if its surface or your hand iswet.
● B e careful not to short-circuit the power line with the metal
part of the test leads when measuring voltage. It may cause
personal injury.
● D o not apply inputs exceeding the maximum allowablemeasuring range.
● Do not press the Test button with test leads connected to the
instrument.
● N ever open the battery compartment cover while making ameasurement.
● Do not touch the circuit under test while measuring insulation
resistance or right after a measurement. You may get an electric
shock by a test voltage.
# WARNING●N ever attempt to make any measurement if any abnormal
conditions are noted, such as broken case and exposed metal partsor when inner jackets are seen through the nicked outer jacket.
● Do not rotate the Range switch with the test leads connected tothe equipment under test.
● D o not install substitute parts or make any modification to
the instrument. Return the instrument to your local Kyoritsu
distributor for repair or re-calibration.
● D o not try to replace the batteries if the surface of the
instrument is wet.
● Firmly insert the plug into the terminal when using test leads.
● Ensure that the instrument is powered off when opening thebattery compartment cover for battery replacement.
̶2̶

# CAUTION● Always make sure to set the Range switch to the appropriate
position before making a measurement.
● S et the Range Switch to “OFF” position after use anddisconnect the test leads from the instrument. Remove thebatteries if the instrument is to be stored and will not be used fora long period.
● D o not expose the instrument to the direct sun, hightemperature and humidity or dewfall.
● Use a cloth dipped in alcohol for cleaning the test leads and thepart around the measuring terminals.
● Do not store the instrument if it is wet.
● The Voltage warning mark is being displayed during a measurement and it flashes when voltages 30V(DC/AC) or more exist on
the circuit under test.
Symbols

Danger of possible electric shock

Instrument with double or reinforced insulation



Earth terminal

DC
AC

Crossed-out wheel bin symbol (according to WEEE
Directive: 2002/96/EC) indicating that this electrical
product may not be treated as household waste, butthat it must be collected and treated separately.

̶3̶

○ Measurement categories(Over-voltage categories)
To ensure safe operation of measuring instruments, IEC 61010
establishes safety standards for various electrical environments,
categorized as CAT I to CAT IV, and called measurement
categories.
Higher-numbered categories correspond to electrical environmentswith greater momentary energy, so a measuring instrument
designed for CAT III environments can endure greater momentaryenergy than one designed for CATII.
CAT I
CAT IICAT IIICAT IV: S econdary electrical circuits connected to an ACelectrical outlet through a transformer or similar device.
: Primary electrical circuits of equipment connected to an
AC electrical outlet by a power cord.
: Primary electrical circuits of the equipment connected
directly to the distribution panel, and feeders from the
distribution panel to outlets.
: The circuit from the service drop to the service entrance,
and to the power meter and primary overcurrent
protection device (distribution panel).

̶4̶2. Feature
KEW3126 is a microcomputer controlled, high voltage insulation
resistance tester with 4-range for measuring insulation resistance.
● Designed to following safety standards:
IEC 61010-1 (CAT.III 600V Pollution degree 2)
IEC 61010-031 (Requirements for hand-held probes)● With auto-discharge functionW hen insulation resistance like a capacitive load is measured,
electrical charges stored in capacitive circuits are automaticallydischarged after measuring. Discharge can be checked on thevoltage monitor.
● Backlight function to facilitate working at dimly illuminated location
or at nighttime work.
● Bar graph to display measured result● LIVE circuit warning symbols plus audible warning● With Auto-power off function
To prevent the instrument being left powered on and conserve
battery power, the instrument automatically turns off approx.
10 min. after the last switch operation.
● Auto-measurement and display of DAR (Dielectric Absorption
Ratio) and PI (Polarization Index)● Filter function to reduce the variations in readings due to external
influences● With a short current of max 5mA, quick measurement is possible
even if the object under test has capacitive components.

̶5̶3. Specification● Applicable standards
IEC 61010-1
Measurement CAT.III 600V Pollution degree2
IEC 61010-031 Standard for hand-held probes
		MODEL7165A(CAT.III 600V)
		MODEL7224A(CAT.IV 600V)
		MODEL7225A(CAT.IV 600V)
		* W
 hen KEW3126 and the test lead are combined
and used together, whichever is lower category
either of them belong to is applied.
IEC 61326-2-2 EMC standard
IEC 60529
IP40● Measuring range and accuracy(Temperature, humidity: 23±5Cº, 45 − 75%RH)<Insulation resistance tester>
Rated voltage

500V
0.0 − 99.9MΩ
100 − 999MΩ

1000V
2500V
5000V
0.0 − 99.9MΩ 0.0 − 99.9MΩ 0.0 − 99.9MΩ
100 − 999MΩ 100 − 999MΩ 100 − 999MΩ
Measuring
1.00 − 1.99GΩ 1.00 − 9.99GΩ 1.00 − 9.99GΩ
Range
10.0 − 99.9GΩ 10.0 − 99.9GΩ
100 − 1000GΩ
Open circuit
DC 500V
DC 1000V
DC 2500V
DC 5000V
Voltage+30%, -0% +20%, -0% +20%, -0% +20%, -0%
1mA or more, 1mA or more, 1mA or more, 1mA or more,
Rated
1.2mA or less 1.2mA or less 1.2mA or less 1.2mA or lessCurrent(at 0.5MΩ load) (at 1MΩ load) (at 2.5MΩ load) (at 5MΩ load)
Short-circuit For 10 sec after a test is started : max 5mA,
current
after that : 1.4mA
100GΩ or more,
Accuracy±5%rdg±3dgt±20%rdg

Voltage monitor for insulation resistance range
30 − 6000V (resolution 10V): ±10%rdg±20V
̶6̶This monitor is used to check whether electrical charge stored
on the equipment under test is discharged or not. The measured
voltage value displayed on the LCD is a reference value.
Please be noted that the indicated value, when external AC
voltage is applied to the instrument, is not the correct value.
<Voltmeter>
Measuring range
Resolution
Accuracy

DC voltage±30 − ±600V

AC voltage
30 − 600V(50/60Hz)

1V±2%rdg±3dgt●Display:

Liquid crystal display
Insulation resistance range: Max.999 counts(1000 counts only at 1TΩ display)
V range: Max. 630 counts
Bar graph : Max. 36 points
DAR/PI value : 9.99
Time: 60:00●Low battery warning: Battery mark display (in 4 levels)●Overrange indication: “OL” mark appears at insulation resistance
range and “Hi” mark at voltage range.
●Auto-ranging:	Range shifts to upper range : 1000 counts
Range shifts to lower range : 80 counts(Only at the insulation resistance range)●Auto-power-off:	Power off function operates in 10 min. after
the last switch operation.
●Used location:
altitude 2000 m or less
●Temperature & humidity range (guaranteed accuracy):
23ºC±5ºC/Relative humidity 85% or less(no condensation)●Operating temperature & humidity range:
0ºC to 40ºC/Relative humidity 85% or less(no condensation)●Storage temperature & humidity range:-20ºC to +60ºC/Relative humidity 75% or less(no condensation)
̶7̶

●Overload protection: 	Insulation resistance range: AC1200V/10sec.
Voltage range: AC720V/10sec.
●Withstand voltage:
AC5320V(50/60Hz)/5sec.
(Between electrical circuit and enclosure)●Insulation resistance: 1000MΩ or more/DC1000V(Between electrical circuit and enclosure)●Dimension:
205(L)×152(W)×94(D)mm●Weight:
approx. 1.8kg (battery included)●Power source:
DC12V: Alkaline battery size C(LR14)x 8pcs
●Current consumption (representative values at 12V of supply voltage)
Range
Output atshort-circuit
When rated
measuring current
is outputted
Output at
open circuit
On stand-by
When backlight
is on

500V 1000V 2500V 5000V
For 10 sec after a test is started :850mA, after that : 150mA

VAC/DC

110mA
450mA 500mA 600mA 850mA* at voltage/0.5MΩ /1MΩ /2.5MΩ /5MΩmeasurement
45mA

50mA

70mA 110mA

25mA

110mA

Increased by 30mA

Note) Current values in above table are all approximate values.
●Operating time:
approx. 10 hours continuous- under a load of 100MΩ at 5000V Insulation
resistance range●Accessories:
Line probe: MODEL7165A
Earth cord: MODEL7224A
Guard cord: MODEL7225A
Alkaline size C battery (LR14) x 8pcs
Instruction manual
Hard Case MODEL9159
Pickel Type Prod: MODEL8019
Straight Type Prod: MODEL8254●Optional accessories: Adaptor for recorder MODEL8302
Line probe with alligator clip MODEL7168
̶8̶

4. Instrument layout
4-1 Instrument layout
8

9

12

7

1

4

6

5

3

2

1 LCD display
2 Range switch
3 Test button
4 Back Light button
5 FILTER button
6 DAR/ PI DISP button
7 Line Terminal
8 Earth Terminal
9 Guard Terminal
10 Line Probe (red)
11 Earth Cord (black)
12 Guard Cord (green)

̶9̶

11

10

4-2 LCD display

4

2

5

15
3

12

1

11
13
10
6

14
9

7
8
1 Insulation resistance
2 Bar graph
3 Voltage
4 Battery mark5 Voltage warning mark6 Time7 DAR mark8 PI mark9 DAR/PI value
10 Filter mark
11 DC
12 AC
13 Minus sign
14 Unit
15 Overheat warning mark̶ 10 ̶

5. Preparation for measurement
5-1 Checking the battery voltage(1) Set the Range switch to any position other than “OFF”.
(2) When the battery mark shown at the upper left on the LCD islast 1 level, the batteries are almost exhausted.
R eplace the batteries with new ones to continue further
measurements.
The instrument operates properly even in such a low battery
power condition and it may not affect the accuracy.
W hen battery mark is empty, the battery voltage is below
the lower limit of the operating voltage. In such a condition, theaccuracy isn’t guaranteed.
L ook up Chapter 7. Battery Replacement in this manual, which
describes how to replace the batteries.
5-2 Connecting test leads
Insert the test lead firmly to the connector terminal on the
instrument. Connect the Line Probe(red) to the Line terminal, theEarth Cord(black) to the Earth terminal and the Guard Cord (green)
to the Guard terminal. (To establish guard is not necessary, you do
not have to connect the Guard cord.) DANGER● Do not press the Test button while the Range switch is at theInsulation measurement position. High voltages are applied tothe test leads and you may get electrical shocks.

̶ 11 ̶

6. Measurement
6-1 Mains disconnection check (Voltage measurement)
 DANGER● Do not make measurement on a circuit in which the electric
potential exceeds AC/DC600V (voltage to ground) in order
to avoid getting electrical shock. In addition, do not use this
instrument when the voltage to ground is 600V or higher eventhe line voltage is 600V or less.
● Ensure that a measurement is performed at the secondary sideof the circuit breaker when testing the voltages of power lines,
which has a large current capacity, in order to avoid possible
hazard to the user.
● Extra precaution shall be taken to minimize the possibility ofshorting the power line with the metal tip of test lead at voltage
measurement. It may cause personal injury.
● Do not start a measurement with the battery cover removed.
● C onnect the Earth cord (black) to the Earth terminal of thecircuit under test.
Voltage can be measured by setting the Range switch on this
instrument to “VAC/DC” position. No need to press the Test button.
KEW3126 has an AC/DC auto-detect circuit and can measure
DC voltage as well. At DC voltage measurement, when applying
positive voltage to the Line Probe (red), positive value is displayedon the LCD.
Ensure that the circuit breaker of the circuit under test is turned off.
(1) Connect the Earth Cord (black) to the earthside of the circuit under test and the Line
Probe (red) to the line side respectively.
(2) Confirm that the voltage displayed on the
LCD is “Lo”. If the display doesn’t show
“Lo”, voltage is applied on the circuitunder test. Check the circuit under test
again and turn off the circuit breaker.
̶ 12 ̶

6-2 Insulation resistance measurement
 DANGER● Confirm that no electrical charge exists on the circuit under test
before measuring by using a high voltage detector.
● Put on a pair of insulated gloves for high voltage.
● In case the Range switch is set to Insulation resistance range,high voltage is being applied to the tips of test leads and tothe circuit under test continuously while the Test button is keptpressed down. Be extremely careful not to get electric shock.
● Do not start measurement with the battery cover removed.
● Never start measurement when thunder rumbling.
● C onnect the Earth Cord (black) to the earth terminal of thecircuit under test.
● With the Range switch set to the Insulation resistance range,
live circuit warning symbol appears on the LCD and the audible
warning activates when a voltage of 30V or higher is measured.
KEW3126 doesn’t start a test, even the Test button is pressed
down, if the measuring voltage is 160V or higher: it starts a test
if the measuring voltage is under 160V upon a press of the Test
button. Prior to testing, ensure that the equipment under test is
disconnected from the mains supply and not energized in order
to avoid possible electrical hazards.
This instrument may start a measurement for energized electricalcircuits. Be extremely careful not to get electrical shock.
To check the insulation of electric equipments or electric circuits,
measure their insulation resistances by using this instrument.
Ensure to check the appropriate voltages to be applied to theequipment under test before starting a measurement.
Note)● K EW3126 may show unstable readings when the insulation
resistance of the equipment under test is not stable.
● B eep sound may be heard during insulation resistancemeasurement. But it is not malfunction.
● It takes time to measure a capacitive load.
● At insulation resistance measurement, positive (+) voltage is
outputted from the Earth terminal and negative (-) voltage is
outputted from the Line terminal.
̶ 13 ̶

Connect the Earth cord to the Earth (ground) terminal.
It is recommended to connect the positive(+) pole to the earthside when measuring insulation resistance against the ground orwhen a part of the equipment under test is earthed.
With this connection, smaller measured value can be obtained
comparing with other way round.
(1) C heck the appropriate voltages to be applied to the circuitunder test, and set the Range switch to any desired insulation
resistance range.
(2) Connect the Earth cord (black) to the Earth terminal of the circuitunder test.
(3) Put the tip of the Line probe (red) to the circuit under test.
Then press the Test button. The buzzer sounds intermittently
during measurement when a range other than 500V is selected.
(4) T he measured value will be displayed on the LCD, and it
remains displayed on the LCD after a measurement.
# CAUTION
Turn off the breaker ofthe circuit under test.

(5) This instrument has Auto-discharge function.
K eep the test leads connected to the circuit under test andrelease the Test button when measurements end. The autodischarge function operates to discharge the electrical charges on
the circuit under test. Confirm that the voltage monitor shows 0V.
# DANGER● Do not touch the circuit under test immediately after testing.
Capacitance stored in the circuit may cause electric shock.
● Leave test leads connected to the circuit and never touch thecircuit until the discharge completes.
̶ 14 ̶

Auto-discharge function
This is a function to discharge capacitance stored in the circuitunder test automatically after testing. Discharge condition can bechecked on the voltage monitor. This function will be canceledwhen removing the test leads 2 sec. or more before discharge
completes.
(6) Set the Range switch to “OFF” position, and remove test leads
from the instrument.
Note)● The voltage warning mark stays on during a measurement and it
blinks when voltages of AC/DC 30V or higher exist on the circuitunder test.
● W hen measuring low resistances (if currents larger than the
rated current are output) over a long period of time, KEW3126
consumes large power and will overheat. When this happens,
further tests are automatically inhibited and the over-temperature
symbolappears on the display. The instrument must thenbe left cool down. Testing shall be resumed whensymboldisappears.
S hort-circuit currents at a start of measurement may get lower
when the “ ” symbol appears.
● Depending on the ambient temperature or measured resistances,
the “ ” symbol may appear and interrupt a PI measurement.

̶ 15 ̶

Principle of Insulation Resistance Measurement
Resistance value can be obtained by applying a certain highvoltage to the resistance (insulation resistance) and measuring theflowing current.
Resistance value = Voltage / Current(RX = V / I)LINE(-)VOLTAGE: V

RESISTANCE VALUE: RX

CURRENT: I
EARTH(+)

6-3 Continuous measurement
Press down and turn the Test button clockwise to lock it to perform
a continuous measurement of insulation resistance. After testing,turn the button counterclockwise and set it to the initial position.
# DANGER● Be extremely careful not to get electric shock as high voltage ispresent on the tip of test leads continuously.

̶ 16 ̶

6-4 DAR/PI Measurement function
1. PI – Polarization index
This is to check a temporal increase of leakage currents flowing on
insulations and to confirm leakage currents aren’t increased as time
passes.
PI is usually determined by the insulation resistances measured 1
min and 10 min after a measurement is started. PI is dependent
on the shape of insulations and influenced by moisture absorption,
therefore, a check of PI is important to diagnosis the insulation ofcables.
Insulation resistance(10 min after a start of test)
PI =Insulation resistance(1 min after a start of test)PI
Criteria

4 or more
Best

4−2
Good

2.0 − 1.0
Warning

1.0 or less
Bad

2. DAR - Dielectric Absorption Ratio
DAR measurement is almost same to PI measurement in a sensethat they test the time course of insulation. The only difference isthat DAR measurement can get result faster than the other.
Insulation resistance(1 min after a start of test)
DAR =Insulation resistance(15 or 30 sec min after a start of test)*1
DAR
Criteria

1.4 or moreBest

1.25 − 1.0Good1.0 or less
Bad

Note1: DAR time is selectable: 15 or 30 sec.
How to select:(1) K eep the DISP button pressed down and rotate the Range
switch to power on KEW3126. (DAR mark blinks on the LCD.)(2) Press the DISP button to switch 15 sec and 30 sec displayed at
the lower left on the LCD. Select the desirable one.
̶ 17 ̶

(3) Press the FILTER button and confirm the selection.
S elected DAR time is saved and kept after the instrument is
powered off.
To check the time currently selected, follow the step (1)described as above.
3. How to measure DAR/ PI
DAR and PI are measured automatically at normal continuous
measurement of insulation resistances. Set the Range switch to
any range and measure the test object continuously.
- 1 min after a start of continuous measurement:
LCD shows DAR value.
- 10 min after a start of continuous measurement:
LCD shows PI value.
When DAR/PI values are displayed as “no”:
DAR and PI values are determined by the methods 1. and 2. as
described above, therefore, they are displayed as “no” when themeasured insulation resistances fall under any of following cases.
(1) measured value is “0.0MΩ”(2) measured value is “OL”
* “OL” is displayed when the measured value exceeds the upper
limit of the measuring range at each insulation resistance range.
Range

Upper limit

500V

999MΩ

1000V

1.99GΩ

2500V

99.9GΩ

5000V

1000GΩ

̶ 18 ̶

4. How DAR/ PI values are displayed
LCD shows DAR/PI values as shown below during measurements.
(1) Start of test

No DAR/PI value,“---” is displayed.

(2) 1 min after the start of test

DAR value is displayed.

(3) 10 min after the start of test
PI value is displayed.
Press the DISP button toswitch DAR and PI values.

̶ 19 ̶

5. How to review the measured DAR/PI values
Press the DISP button when measurements end. The measured
results are then displayed in following sequence. If the measurement ends earlier than the intervals described in below (2), (3) or(4), blank displays aren’t shown and returns to (1).
(1) End of test(A) Time when a test ends
measured at the end(B) Valueof test (resistance value)
DAR or PI value(C) (whichever was displayed at
the end of test)

(B)
(A)

(C)

(2) Results at 15 or 30 sec after a start of test(A) Elapsed time (15 or 30 sec)
Value measured 15 sec after(B) a start of test. (resistancevalue, output voltage)(C) DAR value

(B)
(A)

(C)

(3) Results at 1 min after a start of test(A) Elapsed time (1 min)Value measured 1 min after(B) a start of test. (resistancevalue, output voltage)(C) DAR value

(B)
(A)

(C)

(4) Results at 10 min after a start of test
(B)
(A)

(C)

(A) Elapsed time (10 min)Value measured 10 min after(B) a start of test. (resistancevalue, output voltage)(C) PI value

Return to (1)̶ 20 ̶

6-5 Voltage characteristics of measuring terminal
KEW3126 Output characteristics
5000V range

2500V range

1000V range
500V range* for 10sec after a start of test
6-6 Use of Guard terminal
When measuring the insulation resistance of a cable, leakage
current flowing on the surface of cable jacket and the current
flowing inside the insulator are mixed and may cause error ininsulation resistance value. In order to prevent such error, wind a
conductive wire around the point where leakage current flows.
Then connect it to the Guard terminal as shown in the figure on thenext page.
This is to move out the surface leakage resistance of the cableinsulation to measure only the volume resistance of insulator.
Make sure to use the Guard cord supplied with this instrument toconnect the instrument to Guard terminal.

̶ 21 ̶

Conductor

ＬPower supply

Indicator

Leakage current

Insulation

Ｇ

Protective wire

Ｅ

Cable with sheath（Insulation resistance tester）

6-7 Filter function
KEW3126 has Filter function. Filter Mode is effective to reducethe variations in readings due to external influences during highresistance measurements. The filter type is Low pass filter with cut
off frequency of 0.3Hz.
Press the FILTER button to enable the Filter function. The Filter
mark then appears on the LCD. To check sudden variations inresistances, ensure that the Filter mode is turned off.
6-8 Backlight function
This function to facilitate working at dimly illuminated location orat nighttime work. The backlight doesn’t work when the Range
switch is set to “OFF”. It automatically turns off 2 min after the last
key operation; this feature is disabled while a measurement isprocessed.
6-9 Auto-power-off function
The instrument automatically turns off approx. 10 min. after the lastswitch operation. To restore from the auto power off status, set theRange switch to OFF position once and then set it to any desirable
range.

̶ 22 ̶

7．Battery replacement# DANGER● N ever open the battery compartment cover while making
measurement.
# WARNING● To avoid getting possible electric shock, remove test leads
before opening the battery compartment cover. After replacing
batteries, make sure to tighten up the screw for battery
compartment cover.
# CAUTION● Do not mix new and old batteries nor different types of batteries.
●M ake sure to install batteries in correct polarity as marked
inside.
● After replacing batteries, confirm that the batteries are properly
installed in the compartment and well-contacted with eachbattery contact spring. Improperly installed batteries may cause
a battery liquid leak.
(1) Set the Range switch to “OFF” position, and remove the test
leads from the instrument.
(2) L oosen the battery compartment cover fixing screws, andremove the battery compartment cover. Always replace all 8
batteries with new ones at the same time.
(3) After replacing batteries, make sure to tighten up the screw forbattery compartment cover.

Make sure to installbatteries in correct
polarity as marked
inside.

̶ 23 ̶

8．Accessories
8-1 Metal parts for Line Probe, and replacement# DANGERIn the electrical environment of CAT.II or higher, MODEL8252
should be attached and used with the test lead. With the large
exposed metal parts of MODEL8254 and 8019, the equipment
under test may be shorted. It may result in failure of the equipment
under test and cause fire or lead to fatal or serious injury.
(1) Tip metal parts
MODEL8252: Standard Prod (straight type, with molded parts)
MODEL8254: Straight Type Prod
MODEL8019: Pickel Type Prod
To be used to hook the instrument.
(2) How to replace itTurn the Line probe counterclockwise to remove the attached tip
metal. Put the tip metal you want to use to the hexagon socket
and turn it to clockwise together with the tip of probe, and tightup screws.

MODEL8252
Male Screw

Hexagon Socket
MODEL8019
MODEL8254
̶ 24 ̶

8-2 How to use the adaptor for recorderM ODEL8302 is the adaptor for recorder (option) for output
current measurement. Connect it as shown in the below figure.
Output is DC1mA when current of 1μA is flowing.
To recorder
To shield
or Earth−+* MODEL8302 can measure currents up to 2mA.
8-3 Line probe with alligator clip

LINE

MODEL7168 Line probe with alligator clip
(optional accessory)̶ 25 ̶DISTRIBUTOR

Kyoritsu reserves the rights to change specifications or designs
described in this manual without notice and without obligations.

10-04

92-2028