INSTRUCTION MANUALPORTABLE APPLIANCE TESTERMODEL 6201
KYORITSU ELECTRICAL INSTRUMENTS
WORKS，LTD.

CONTENTS
1．Safe testing .....................................................................................１
2. Procedure of removing cover ......................................................... ３
2.1 Method of removing the cover .................................................. ３
2.2 Method of storing the cover ...................................................... ３
3. Product summary and explanation .................................................４
3.1 Product summary ..................................................................... ４
3.2 Test range .................................................................................４
3.3 Features ................................................................................... ５
3.4 Instrument layout ...................................................................... ５
3.5 Explanation for indications ........................................................８
3.5.1 LCD Display ..........................................................................８
3.5.2 LED for threshold value indication and buzzer ..................... ８
3.6 Applicable standards .................................................................. ８
4. Specification ................................................................................. ９
5. Preparation before a measurement ............................................... 11
5.1 Visual inspection ........................................................................ 11
5.2 Connection to main power supply .............................................. 11
5.2.1 Connection of mains cord .....................................................115.2.2 Check the power supply voltage .......................................... 11
5.2.3 NULL setting (Protective conductor resistance range) .........125.2.4 Voltage setting for insulation resistance measurement ........13
6. Measuring method ......................................................................... 14
6.1 Earthed appliance Test ..............................................................14
6.2 Double Insulation Test ................................................................16
6.3 Extension Leads Test ................................................................. 17
7. Fuse replacement .......................................................................... 19
8. Services ......................................................................................... 20
9. Case and strap assembly .............................................................. 21

1. Safe testing ！
Electricity is dangerous and can cause injury and death. Always treat it with thegreatest of respectand care. If you are not quite sure how to proceed, stop a
measurement and take advice from a qualified person.
This instruction manual ontains warning and safety rules which must be
observed by the user to ensure safe operation of the instrument and retain it insafe condition. Therefore, read through these operating instructions before
using the instrument.

IMPORTANT:This instrument must only be used by a competent and trained person andoperated in strict accordance with the instructions.
KYORITSU will not accept liability for any damage or injury caused by misuseor non-compliance with the instructions or with the safety procedures.
It is essential to read and to understand the safety rules contained in the
instructions or with the safety procedures.
The symbol ！ indicated on the instrument means that the user must referto the related sections in the manual for safe operation of the instrument.

！ DANGER

is reserved for conditions and actions that are likely tocause serious or fatal injury.

！ WARNING

is reserved for conditions and actions that can cause
serious or fatal injury.

！ CAUTION

is reserved for conditions and actions that can cause
minor injury or instrument damage.

Be sure to carefully read instructions following each symbol
this manual.

―1―

！

in

！ DANGER● This instrument can be connected only to the commercial power of
240V+10%-10%, 50Hz.
● For safety reasons, only use the Test Leads designed to be used withthis instrument and recommended by KYORITSU.
● Use only grounded mains outlets to supply the instrument.
Do not touch the device under test while testing is in progress.
● Since a high voltage of 500V is outputting continuously, especially whilemeasuring insulation resistance, user may get electrical shock.
Also not to touch the capacitor of the device under test as hazardous
voltage may exist.
● When testing, always be sure to keep your fingers behind the safetybarriers on the test leads.
● Disconnect the instrument from the power supply when measurement isfinished.
Do not leave the instrument with connected to the power supply.

！ WARNING！ Never open the instrument case - because dangerous voltages arepresent. Only fully trained and competent electrical engineers should open
the case.
● If abnormal conditions of any sort are noted (such as a faulty display,
unexpected readings, broken case, cracked test leads, etc.)do not use
the instrument and return it to your distributor for inspection and repair.
Never attempt to use the instrument if the instrument or your hand is wet.

●

！ CAUTION● When using Test Leads with alligator clip, be sure to check the alligator
clip is firmly connected to the metal part of the device under test.
Otherwise, inaccurate measurement or arc at the contacts may occurs.
● The rated measuring voltage for insulation test is 500V.DC.
For electrical devices to be tested, if this test voltage seems not proper toapply, contact your distributor and ask for advices.
● When testing faulty device, it may trip the circuit breaker of main power
supply during test and may cause interruption of service.
Be careful when the same main power supply is used for PCs.
● We are not liable for loss of data on PC during testing with this
instrument. The device under test is powered on during most tests,
but please turn it to OFF position after use. Use a cloth dipped in water orneutral detergent for cleaning the instrument.
Do not use abrasives or solvents.

―2―

2. Procedure of removing coverModel 6201 have a dedicated cover to protect against an impact from theoutside and prevent the operation part, the LCD, and the connector socket frombecoming dirty. The cover can be detached and put on the back side of themain body during measurement.
2.1 Method of removing the cover

Fig.1

2.2 Method of storing the cover

Fig.2

―3―

3. Product summary and explanation
3.1 Product summary
The Model 6201 is a hand-held portable appliance tester, performing fourfunctions to ensure the Safety of Class I and Class II appliances. And also canmeasure the mains voltage. Readings are displayed on a large liquid crystal
display(LCD) below which are three LEDs, light up in 2color, 2 color LEDs whichunambiguously display a pass or fail indication for results dictated byinternational standards.
This instrument is suitable for performing tests as required by the following
standards.
AS/NZS 3760: 2001 In-service safety inspection and testing of electricalequipment.
This instrument is designed to check the electrical safety of appliances of ClassI and Class II categories.
As a guide IEC standard define these two categories as follows:
Class １：Appliances which have a functional insulation throughout and anearth connected case. These are often described as earthed
appliances.
Class ２：Appliances which have both functional and additional insulation
where any metal parts cannot become "Live" under fault conditions.

3.2 Test range
MODEL 6201 have following features.
Range

Tests

Earthed Appliance test

(1) Protective conductor resistance(Class 1 appliance)(2) Insulation

Double Insulation test

(1) Insulation(Class 2 appliance)
Extension Leads test

(1) Protective conductor resistance(2) Insulation L-N and L/N-PE(3) Polarity―4―3.3 Features＊ Compact, light weight and truly portable＊ Robust Panel and Case
＊ Capable of measuring the voltage of main power supply＊ Large custom digital display＊ Capable of judging pass/fail of tests by LED on the panel and by buzzer.
3.4 Instrument layout (Illust: M-6201)(1) Test socket(2) Terminal block(6)LCD(7) LED for test result(8)Start switch(9)Null/250V-500V
switch(10) Range switch

Terminal Block

Fig. 3
(11)

(3)

(4)
―5―

(5)

（1）Test socket
Insert the mains plug of DUT to this socket for the polarity test of protective
conductor resistance, insulation resistance and Extension leads.
（2）Terminal block
Connect the attached mains cord and Test Leads to this terminal block.
（3）Terminal for mains cordThis terminal is connected to a mains supply via M7123.
（4）Terminal for Extension leads adaptor
It corresponds to L, N, E of test socket, and the extension leads adaptor(M7140) connected with the cord reel to be plugged to it.
（5）Rpe terminal
Connect the Test Lead with alligator clip(M7129)(13) to this terminal for themeasurement of protective conductor resistance, and clip the metal parts of
DUT with the alligator clip.
（6）LCD
Measured value is displayed.
（7） LED for test result
When the value of protective conductor resistance and insulation resistanceexceeds the limit dictated by applicable standards, LED lights up in red.
When it is within the limit, LED lights up in green.
（8）Start switch
A measurement starts by pressing this switch.
（9）NULL/250V-500V switch● Earthed appliance test measurementIt is used in order to push the
NULL button before protection earth resistance measurement and tocancel the resistance of a test leads.
● Double insulation test measurement
The test voltage of insulation resistance is changed to 500V and 250V.
（10）Range switch
Select a range with this switch.

―6―

（11）Fuse
Protected by a fuse of 600V/500mA ceramic fuse (F type Φ6.3x32mm).
User can replace this fuse.
（12）Mains cord(AU) M-7123
This mains cord can be connected to the mains supply so that the
instrument can derive power from it. To measure contact current, the socketof the main power supply is to be equipped with an earth terminal.

Fig.4（13）Test Lead with safety alligator clip(M-7129) and Probe with Blade type
Prod(M-7101).The adapter of a tip part is exchangeable for analligator clip
and a test stick type.
Please use it according to a measurement use.
Probe wIth Blade Type Prod

Safety Alligator Clip

Fig.5

（14）Extension leads adaptor(M-7140)
This is for connecting the instrument and a cord reel.

Fig.6

―7―

3.5 Explanation for indications
3.5.1 LCD Display
Insulation measurement voltage
Power supply voltage(Line-Neutral) indication

NULL indication

Unit indication

Fig.7Note) Over range display: "OL" is displayed on the LCD.
3.5.2 LED for threshold value indication and buzzer
Range
Earth
Continuity
Insulation
Polarity(L/N/PE)

Status

LED Color

Warning buzzer(Continuous sounds)

RPE ＜ 1Ω
RPE ≧ 1ΩRINS ≧ 1MΩ
RINS ＜ 1MΩ
Correct wiring
Faulty wiring

Green
Red
Green
Red
Green
Red

--ON
--ON
--ON

3.6 Applicable standards
Instrument operation
AS/NZS 3760: 2001 In-service safety inspection and testing ofelectrical equipment.
Safety: IEC/EN61010-1 CAT.III 300V-instrument
IEC/EN61010-2-031 CAT.III 300V(600V)-test lead―8―

4. Specification● General specification, measuring range and accuracy
Voltage(VOLT) measurement of main power supply
Measuring range
Resolution
Accuracy

207 ~ 264V AC
1V± (2%rdg+3dgt)

Measurement of Protective conductor resistance(RPE)
Measuring range
Resolution
Open-circuit voltage
Measuring current
Accuracy0 ~ 19.99Ω
10mΩ
±5.0± 0.4V DC
Within 200 ~ 250mA DC(when measuring 0 ~ 2Ω
± (2%rdg+3dgt)

Measurement of Insulation resistance (RINS)
RatingMeasuring range
Resolution
Rated voltage
Short-circuit current
Accuracy

250V/200MΩ and 500V / 200MΩ
0~19.99MΩ/ 199.9MΩ (2 auto ranges)
10kΩ/100kΩ
250V/500V DC(+20%/-10%) @1MΩ14mA DC or less
± (2% rdg+3dgt)

Threshold and display
Range
Earth
Continuity
Insulation
Polarity(L/N/PE)

Status

LED Color

Warning buzzer(Continuous sounds)

RPE ＜ 1Ω
RPE ≧ 1ΩRINS ≧ 1MΩ
RINS ＜ 1MΩ
Correct wiring
Faulty wiring

Green
Red
Green
Red
Green
Red

--ON
--ON
--ON

―9―

Reference test condition
Unless otherwise specified, this specification is dependent on following
condition.
(1) Ambient temperature: 23±5℃(2) Relative humidity: 45 ~ 75%(3) Attitude: Horizontal(4) AC power supply: 240V, 50Hz
(5) Altitude: 2000m or less
Operating temperature and humidity range
0℃ ~ +40℃ Relative humidity: 85% or less(no condensation)
Storage temperature and humidity range-20℃ ~ +60℃ Relative humidity: 85% or less(no condensation)
Rate voltage and frequency
Rated voltage: 240V ±10%
Rated frequency: 50Hz ±1%
Maximum rated power
Approx. 7VA
Outer dimension and weight
Outer dimension: 185(L) × 167(W) × 89(D)mm
Weight: Approx. 1kg (only the instrument body)
Symbols used on the instrument:
F Equipment protected throughout by DOUBLE INSULATION or
REINFORCED INSULATION！ Caution (Refer to the accompanying instruction manual)― 10 ―

5. Preparation before a measurement
5．1 Visual inspection
Before starting a measurement, user should undertake visual checks on
the mains cord, case and that the correct type and rated fuse is fitted to
the DUT. And also there should be no evidence of damage of a naturethat may impair the electrical safety of the item.
5.2 Connection to main power supply
5.2.1 Connection of mains cord
Set the range switch to VOLT range, and connect the mains supply and the
instrument with M7123 mains cord.

M7123

Fig.8
！ CAUTION● Always be sure to check there is no abnormal conditions or damages on
the instrument and cords. If any evidence of abnormality found,measurement shall be stopped immediately.
● The outlet of mains power supply must have earth terminal.
● This instrument can be only connected to the commercial power of
240V+10%-10%, 50Hz.
5.2.2 Check the power supply voltage
There is no power switch and the instrument is immediately ready for use.
Power supply voltage is displayed on the LCD. Please check the value, andwhen it is from 216V to 264V, the instrument can perform correct
measurements. If the displayed value is out of above range, do not make ameasurement.
― 11 ―

！ WARNING● When the voltage of mains power supply is 265V or more, "HI-V" isdisplayed on the LCD and buzzer sounds (discontinuous sounds). In thatcase, disconnect the mains cord of the instrument from main power supply.

5.2.3 NULL setting
Criteria of judgment for Earth Continuity is 1Ω, and it is low value.
So even the resistance of Test Leads will affect the measurement result.
This instrument, M-6201, can cancel the resistance of Test lead by pressing
250Ｖ/ 500Ｖ switch. The procedure of NULL setting is shown below.
NULL
The NULL function is not released even if power off the instrument, therefore,
there's no need to do NULL setting at every measurement.
However, when replacing fuses or test leads, it is recommended to do NULL
setting again
Procedure:(1) Set the range switch to Earth Appliance Test range.
(2) Connect the mains supply and the instrument with M7123 mains cord.

Fig.9― 12 ―

(3) Insert Test Lead with safety alligator clip(M-7129) in to the E terminal of the
instrument, and contact the tip of the Test Lead with the metal parts of thesocket on the instrument.
Press start switch with contacting the Test Lead and the metal parts,theresistance of Test Lead will be displayed on the LCD as shown above fig.10
for 2sec.
Then, the instrument cancels the resistance value of Test Lead and adjust
the displayed value to "0.00" as shown below fig.10.
At this bout, NULL mark is displayed in the LCD.
Display at NULL setting

Fig.10(4) NULL setting can be released by pressing

250Ｖ/ 500Ｖ
switch for 2sec.
NULL

The "NULL" mark on the LCD will disappear when NULL setting is released.
NULL setting and release can be done on Earthed Appliance Test range only.
5.2.4 Voltage setting for insulation resistance measurement(How to change 250V and 500V)
250Ｖ/ 500Ｖ
(1) Set the range switch to Double Insulation range, and press the
NULL
switch.
Then the mark to indicate the selected voltage is shown on the LCD. By
pressing 250Ｖ/ 500Ｖ switch, 250V and 500V can be changed over.
NULLh
250Ｖ/ 500Ｖ
NULL
Fig.11― 13 ―

6. Measuring method
6.1 Earthed appliance Test
The purpose of the test carried out for Class 1 appliances is to check theinsulation resistance between accessible conductive parts and connection ofprotective earth and between live wire parts and accessible conductive parts
is within the range defined in the standards.
To conduct the tests of protective conductor resistance and insulation
resistance for DUT, connect the mains plug of DUT to the test socket (1)described in clause 3.4 INSTRUMENTS LAYOUT and PE probe
terminal (5).
Use the following setups, depending upon the type of DUT.

Fig.12(1) Power on the DUT(2) Connect the mains plug of Safety class 1 DUT to test socket on the
instrument.

― 14 ―

(3) Connect Test Lead M-7129 to Rpe terminal and clip the metal part of DUT
with alligator clip.
(4) Press theSTART

switch when above preparation is completed.

(5) First, measure the protective conductor resistance.
When it passes(1Ω or less), ○ EarthContinuity lights up in green and display themeasured result on the LCD.
(6) Then the instrument automatically performs insulation resistancemeasurement. When it passes(1MΩ or more), ○Insulation lights up in red
and the measurement is completed. The measured values of protective
conductor resistance and insulation resistance, which are passed the test,
will be alternately displayed on the LCD.
Earth(7) When it fails, ○ Continuity or ○Insulation will light up in red, and "no" isdisplayed on the LCD.
The measured value, which is failed the test, and the message "no" will be
alternately displayed on the LCD.

！ CAUTION● Follow the procedure described in 5.2-3 and do NULL setting before ameasurement.
● Alligator clip must make good contact with the enclosure of the DUT.
● When the terminal is open or the resistance value exceeds measuring
range, "OL" mark (over range display) appears on the LCD.
● Do not touch the device under test while testing is in progress.
Since a high voltage of 500V, user may get electrical shock.

― 15 ―

6.2 Double Insulation Test
The Class 2 appliances have the indication of "DOUBLE INSULATION"
or the symbol of F. Double insulation test is to check the insulation
resistance of the appliances is within the range defined in the standards.

Fig.13(1) Power on the DUT(2) Connect Test Lead M-7129 to Rpe terminal and clip the metal partof DUT with alligator clip.
(3) Connect the mains plug of Safety class 2 DUT to test socket on the
instrument.
(4) Press the START switch when above preparation is completed.
(5) Measure the insulation resistance.
When it passes(1MΩ or more), ○Insulation lights up in green andthe test is completed. The measured value, which is passed the test, will be
displayed on the LCD .

― 16 ―

！ CAUTION● When the terminal is open or the resistance value exceeds measuring
range, "OL" mark (over range display) appears on the LCD.
● Do not touch the device under test while testing is in progress.
Since a high voltage of 500V, user may get electrical shock.

6.3 Extension Leads Test
This test is for extension leads, and check:＊ Protective conductor＊ Insulation resistance between L and N, and insulation resistance
between L/N and PE.
＊ Polarity check of the Line and Neutral terminal of plug and socket.
Test procedure and the connection are as follows.

Fig.14― 17 ―

(1) Plug the extension leads adaptor M-7140 to the IEC socket of
M-6201 connector block.
(2) Connect the plug of the adaptor M-7140 for extension lead with theconnector of the extension lead.
(3) Insert the plug of extension lead into the socket on the front side of M-6201.
(4) Set the range switch on M-6201 to Extension Leads Test range, andpress the START switch.
(5) Then protective conductor resistance is measured.
When it passes(1Ω or less),lights up in green and display the measured
result on the LCD.
(6) Then the instrument automatically performs insulation resistancemeasurement. When it passes(1MΩ or more), ○Insulation lights up in green
and the measured result is displayed on the LCD.
(7) Polarity test will be performed the next, and when it passes,
lights up in green and the measured values of protective○Polarity
conductor resistance and insulation resistance will be alternately displayedon the LCD .
Earth(8) When it fails at any of three: ○ Continuity ○Insulation○Polarity , thecorresponding LED lights up in red and further measurement will be stopped.
The measured value, which is failed the test, and the message "no" will be
displayed on the LCD in turn.

！ CAUTION● Follow the procedure described in 5.2-3 and do NULL setting before ameasurement.
● Alligator clip must make good contact with the enclosure of the DUT.
● When the terminal is open or the resistance value exceeds measuring
range, "OL" mark (over range display) appears on the LCD.
● Do not touch the device under test while testing is in progress.
Since a high voltage of 500V, user may get electrical shock.

― 18 ―

7. Fuse replacement
When the fuse blows during use, please replace with new one according to
below procedure.

Fig.15(1) Use a flat head screwdriver and turn it about 45°to left and remove thefuse cap and fuse.
(2) Remove the fuse from the fuse cap and replace it with new one.
(3) Install the fuse cap and fuse again. At that point, the screwdriver groove
shall be at about 45°turned to left from the initial position. Use the flathead screwdriver and turn it to right.
(The screwdriver groove will stop at the horizontal position.)！ WARNING● Be sure to remove mains cord from the instrument before replacing fuse.
● The fuse that user can replace is this fuse only. Never attempt to performthe other repairing.
！ CAUTION● Please use the specified fuse
(Fast acting type ceramic fuse: 600V/500mA - Φ6.3×32mm).
For the specified fuse, purchase it by yourself or order it from our agency.

― 19 ―

8. Services
If this instrument should fail to operate correctly, return it to your distributor.
Please remember to give all the information possible concerning the nature of
the fault, as this will mean that the instrument will be serviced and returned to
you more quickly.

― 20 ―

9. Case and strap assembly
Strap belt and probe case can be attached to the instrument as below.
Pass the strap belt down through the side panel of the main body from the top,
and up through the slots of the probe form the bottom. (Fig. 16).
Pass the strap through the buckle, adjust the strap for length and secure.

Fig.16― 21 ―

DISTRIBUTOR

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

92-1559

03-07