KYORITSU KEW6205 User manual

PORTABLE APPLIANCE TESTER
KEW6205
INSTRUCTION MANUAL

CONTENTS
1. Safe testing ................................................................................. 3
2. Product summary and explanation............................................. 6
2.1 Product summary.................................................................. 6
2.2 Test Function......................................................................... 6
2.3 Features ................................................................................ 6
2.4 Tester layout.......................................................................... 7
2.4.1 Function Switches....................................................... 7
2.4.2 LCD indications........................................................... 9
2.4.3 Connector ................................................................. 11
2.5 Accessories ........................................................................ 12
2.6 Optional accessories .......................................................... 13
3. Specification ............................................................................. 14
3.1 General specification, measuring range and accuracy...... 14
3.2 General specification.......................................................... 16
3.3 Threshold and display......................................................... 17
4. Preparation before a measurement.......................................... 18
4.1 Visual inspection ................................................................. 18
4.2 Battery Voltage Check........................................................ 18
4.3 Setting ................................................................................. 18
4.3.1 Null setting ................................................................ 18
4.3.2 Voltage setting for insulation resistance measurement
(How to change between 250V and 500V)................ 19
5. Measuring method .................................................................... 20
5.1 Class I Test.......................................................................... 20
5.2 Class ll Test......................................................................... 23
5.3 Extension Leads Test ......................................................... 28
5.4 RCD TEST .......................................................................... 32
6. Memory/ Recall function ...........................................................36
6.1 Memory function ................................................................. 36
6.2 Recall function .................................................................... 37
6.3 Delete the saved data......................................................... 38
7. Print function ............................................................................. 39
8. USB communication ................................................................. 41
9. Clock mode ............................................................................... 42
10. Backlight.................................................................................. 43
11. Battery / Fuse replacement ..................................................... 43
11.1 Battery Replacement........................................................ 43
11.2 Fuse Replacement ...........................................................44
12. Shoulder strap attachment......................................................44
13. Maintenance............................................................................ 45

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1. Safe testing
Electricity is dangerous and can cause injury and death. Always
treat it with the greatest of respect and care. If you are not quite sure
how to proceed, then stop, take advice from a qualified person.
This instruction manual contains warning and safety rules which
must be observed by the user to ensure safe operation of the Tester
and retain it in safe condition. Therefore, read through these
operating instructions before using the Tester.
IMPORTANT:
The Tester must only be used by a competent and trained person
and operated in strict accordance with these instructions.
KYORITSU will not accept liability for any damage or injury caused
by misuse or non-compliance with the instructions or with the safety
procedures.
It is essential to read and to understand the safety rules contained
in these instructions and with the safety procedures.
The symbol #indicated on the Tester means that the user must
refer to the related sections in the manual for safe operation of the
Tester.
Be sure to carefully read instructions following each symbol #in
this manual.
#DANGER : is reserved for conditions and actions that are likely
to cause 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 injury or instrument damage.
#DANGER
●The Tester can be connected only to the commercial power of
100V – 253V, 50Hz.
● For safety reasons, only use the Test Leads designed to be
used with this Tester and recommended by KYORITSU.
●Use only grounded mains outlets to supply the Tester.
●Do not touch the device under test while testing is in progress.

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#DANGER
● Since a high voltage 250V or 500V is being output continuously,
when measuring insulation resistance, the user may get an
electrical shock. Any capacitors in the appliance under test may
become charged during testing and may contain hazardous
voltages do not touch them.
● When testing, always be sure to keep your fingers behind the
safety protective finger guard on the test leads.
● Disconnect the Tester from the power supply when measurement
is finished.
●Do not leave the Tester with connected to the power supply.
#WARNING
● Never open the instrument case – because dangerous voltages
are present. 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 Tester and return it to your distributor for
inspection and repair.
●Never attempt to use the Tester if the Tester or your hands are
wet.
●Stop using the test lead if the outer jacket is damaged and the
inner white jacket is exposed.
#CAUTION
● When using Test Leads with the alligator clip, be sure to check
the alligator clip is firmly connected to the metal part of the
device under test. Otherwise, inaccurate measurements or
arcing at the contacts may occur.
●The rated measuring voltage for the insulation test is 250V or
500V DC. If this voltage seems too high for the appliance
under test contact the appliance manufacturer for advice.
● When testing a faulty appliance, 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 the
Tester. The appliance under test is powered on during most
tests, but please turn it to the OFF position after testing.
●Use a very slightly damp cloth for cleaning the Tester. Do not
use abrasives or solvents.

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Measurement Category
To ensure safe operation of measuring instruments, IEC 61010
establishes safety standards for various electrical environments,
categorized as O to CAT IV, and called measurement categories.
Higher-numbered categories correspond to electrical environments
with greater momentary energy, so a measuring instrument
designed for CAT III environments can endure greater momentary
energy than one designed for CAT II.
O : Circuits which are not directly connected to the mains
power supply.
CAT II : Electrical circuits of equipment connected to an AC
electrical outlet by a power cord.
CAT III : Primary electrical circuits of the equipment connected
directly to the distribution panel, and feeders from the
distribution panel to outlets.
CAT IV : The circuit from the service drop to the service entrance,
and to the power meter and primary over-current
protection device (distribution panel).
O: Device which is
not directly
connected to the
mains power supply

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2. Product summary and explanation
2.1 Product summary
KEW6205 (Tester) is a hand-held portable appliance tester and can
test electrical safety of Class I and Class II appliances. The Tester
performs test and indicates PASS/ FAIL result complying with the
criteria of judgement defined in AS/NZS3760.
As a guide, AS/NZS3760 defines these two categories as follows:
Class I : Appliances which have a functional insulation throughout
and an earth connected case. These are often described
as earthed appliances.
Class II : Appliances which have both functional and additional
insulation where any metal parts cannot become
Liveunder fault conditions.
2.2 Test Function
●CL I:
･ Protective conductor resistance test (Test current 200mA DC nominal)
･Insulation test (250V or 500V)
･Run leakage current test
･Load current test
●CL II:
･Insulation test (250V or 500V)
･Run leakage current test
･Load current test
●Extension Lead test
･ Protective conductor resistance test (Test current 200mA DC nominal)
･Insulation test (250V or 500V)
･L-N Short test
･Polarity test
･Run leakage current test
●RCD test
2.3 Features
●Check for whether the appliance is switched ON.
●Selection for 250V or 500V on the insulation resistance test.
●Null function for the protective conductor resistance test.
●Auto-testing & PASS/ FAIL indication with backlight
●Auto-power-off

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2.4 Tester layout
2.4.1 Function Switches
Switch Details
CLI
switch
Short press: Starts CLI test.
(Continuity test: 1 sec.)
Long press: Starts CLI test.
(Continuity test: 5 sec.)
CLII
switch Starts CLII test.
Extension
switch
Short press: Starts Extension lead test.
(Continuity test: 1 sec.)
Long press: Starts Extension lead test.
(Continuity test: 5 sec.)
NULL
switch Performs NULL.
Connector
Display(LCD)
Switches
Connector

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Switch Details
Power
switch
Short press: Works as ESC switch. Returns
to the stand-by screen when
a test is halted byFAILresult.
Long press: Turns on/ off the Tester.
250V
/500V
Switches output voltage for insulation
resistance test between 250 V and 500
V. (Default setting: 250 V)
Light
switch
Short press: Turns on/ off LCD backlight.
Long press: Enters into clock mode.
RCD
switch
Switches to RCD stand-by screen.
Another press on the stand-by screen
starts RCD test. Long press on the
screen switches test current between 10
mA and 30 mA. (Default setting: 30 mA)
Memory
switch Saves test results.
Recall
switch Recalls the saved data.
Print
switch
Transfers the displayed test result to a
printer.

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2.4.2 LCD indications
<All symbols to be displayed on the LCD>
Display symbols
NULL value has been set.
Rated voltage for insulation resistance
test
Leakage current test under actual
working condition
Rated current for RCD test
Measurement in progress
Protective conductor resistance
Insulation resistance
Insulation resistance between L-N
(Extension Lead Test)
Leakage current
Load current

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Mains voltage
Polarity test result
Indicates items failed the test.
RCD test range
Prompts to check and turn on a DUT.
Indicates the connection for RCD test
is incorrect.
Indicates the resistance between L-L
(N-N) is less than 10 Ωand polarity is
correct.
Open circuit warning –resistance
between L-L (N-N) is 10 Ωor higher at
polarity test.
Crossed L-N polarity warning -
resistance between L-N (N-L) is 10 Ω
or lower at polarity test.
Short-circuited L-N warning –
resistance between L-N is 100 kΩor
lower at insulation test. (Extension
Lead Test)
Fault voltage of 50 V or higher is
detected at RCD test.
Test result is PASS.
Test result is FAIL.
RCD tripped at fault current detection.
Warning – voltage of 30 V or higher is
being applied to the IEC connector
while a function other than RCD is
selected.
Blinks while saving data.
Data no. given for the saved data.

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2.4.3 Connector
(1) Test socket Insert the mains plug of DUT to this
socket for the polarity test of protective
conductor resistance, insulation
resistance and leakage current test.
(2) Terminal for
mains lead
This terminal is connected to a mains
supply via MODEL7277.
(3) Rpe Test Lead
terminal
Connect the test lead MODEL7129A to
this terminal for the measurement of
protective conductor resistance, and clip
the metal parts of DUT with the alligator
clip.
(4) Terminal for
Extension leads
adaptor
It corresponds to L, N, E of test socket,
and the extension leads adaptor
connected with the cord reel to be
plugged to it.
(5) Terminal for USB
cable
Connect the optional USB cable to this
terminal to transfer the internal data to a
PC.
(6) Terminal for
printer cable
This terminal is connected to a printer
with the optional printer cable
MODEL7275.
(1)
(3) (4) (2)
(6)
(5)

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2.5 Accessories
(1) Mains lead MODEL7277
This mains lead can be connected to the mains supply so that the
Tester supply power to the DUT.
(2) Test Lead with safety alligator clip (MODEL7129A) and Probe
with Blade type Prod(MODEL7161A). The probe and alligator
clip are interchangeable.
Please use it according to a measurement use.
*1 Protective finger guard is a part providing protection against
electrical shock and ensuring the minimum required air and
creepage distances.
(3) Extension leads adaptor MODEL7276
This is for connecting the Tester and an extension lead (cord
reel).
(4) Soft case MODEL9193
(5) Six size AA alkaline batteries(LR6)
(6) Instruction manual
(7) Shoulder strap with Buckle
Alligator Clip
Probe with Blade Type Prod
Protective
finger guard*1
Protective
finger guard*1
IEC Connector

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2.6 Optional accessories
(1) Printer cable MODEL7275
(2) USB cable with "KEW Report(Software)" MODEL8263-USB

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3. Specification
3.1 General specification, measuring range and accuracy
Mains voltage indication:
Display range 30 - 270 V
Hi/ Lo indication < 30 V: No voltage indication
> 270 V: >270 V
Resolution 1 V
Accuracy ±5 V
* Voltage between L-N of mains lead terminal is measured and
displayed at voltage test.
Protective conductor resistance test
Measuring range 0.00 - 20.00 Ω(NULL value included.) *
Over-range indication > 21.00 Ω
Resolution 0.01Ω
Open-circuit voltage 5 V ±0.4 V DC
Measuring current 200 mA DC (nominal value)
Accuracy ±3%rdg ±5dgt
* Resistances exceeding 3 Ωcannot be canceled by NULL function.
Insulation resistance test
Rated voltage 250V 500V
Measuring
range
0.00 - 20.00 MΩ
Over-range
indication
> 21.00 MΩ
Resolution 0.01 MΩ
Rated voltage 250V DC +20%, -10%
@ 1MΩ
500V DC+20%, -10%
@ 1MΩ
Short-circuit
current
1.5 mA DC or less
Rated current
1 -1.2 mA @ 0.25 MΩ 1 -1.2 mA @0.5 MΩ
Accuracy ±2%rdg±3dgt

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Leakage current test under actual working condition:
(Load current is also measured.)
Item Load current Leakage current
Mains voltage
range
100 - 253 V/ 50 Hz
Measuring range 0.10 - 10.00 A rms 0.10 - 20.00 mA rms
Display range 0.00 - 12.00 A 0.00 - 21.00 mA
Over-range
indication
> 12.00 A > 21.00 mA
Resolution 0.01A 0.01mA
Accuracy ±10%rdg ±5dgt ±3%rdg ±5dgt
Max. rating 2.5 kVA max./
15 sec. continuous
---
Insulation test between L-N at Extension Lead Test
Open-circuit voltage 4.5 V ±0.5 V DC
Criteria of judgement 100 kΩ±20 kΩor less: LCD shows
<0.10 MΩand the measurement is
halted.
RCD test:
Four tests with the pre-set rated current are performed in the
following sequence: ×1(0°)→×1(180°)→×5(0°)→×5(180°).
Rated voltage 230 V -15% +10% (50Hz)
Rated current 10 mA/ 30 mA
Function ×1 ×5
Test duration 0.0 ms - 500.0 ms 0.0 ms - 40.0 ms
Energization FS ±3%
Test current accuracy ±3%
Operating time
accuracy
±2 ms (≦40 ms)
±8 ms (>40 ms)

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3.2 General specification
Reference conditions Specifications are based on the
following conditions, except
where otherwise stated: -
(1) Ambient temperature: 23±5˚C
(2) Relative humidity: 45 - 75%
(3) Attitude: Horizontal
(4) AC power supply: 230 V, 50Hz
(5) Altitude: 2000m or less
Battery type Six size AA alkaline batteries
(LR6)
Operating temperature and
humidity range
0ºC to +40ºC, relative humidity:
85% or less (no condensation)
Storage temperature and
humidity range
-20ºC to +60ºC, relative humidity:
85% or less (no condensation)
Rate voltage and frequency Rated voltage: 230 V -15% +10%
Rated frequency: 50 Hz
Maximum load current at test
socket
2.5 kVA (15sec.)
Outer dimension and weight Outer dimension:
261(L) × 104 (W) × 57(D)mm
Weight (including batteries):
Approx. 940g
Auto power off The Tester turns off automatically
after 10 minutes.
Possible number of measure-
ments where battery voltage
is within the effective range
(measuring every 30 sec.)
Approx. 3000 times
(CLI Rpe: 0 Ω, Rins: 1.1 MΩ)
Applicable standards:
Instrument operation AS/NZS3760:2010
Safety IEC/EN61010-1 CAT II 300V-instrument
IEC/EN61010-2-030
IEC/EN61010-031
MODEL7129A(CAT III 600V) *
EMC EN61326-1, 2-2
Environmental standard EN50581
*When the instrument and the test lead are combined and used
together, whichever lower category either of them belongs to will
be applied.

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Symbols used on the Tester:
CAT II Electrical circuits of equipment connected to an AC
electrical outlet by a power cord.
Double or reinforced insulation
#User must refer to the explanations in the instruction
manual.
Earth
ATT（Anti-Trip Technology)
The Tester uses mains voltage across L-N for PRCD
testing.It enables PRCD testing without tripping the RCD
of mains power.
Crossed-out wheel bin symbol (according to WEEE
Directive: 2002/96/EC) indicating that this electrical
product may not be treated as household waste, but that it
must be collected and treated separately.
3.3 Threshold and display
Function
Protective
conductor
resistance
Insulation
resistance
Leakage
current
Class l RPE ≦1ΩRINS ≧1MΩILEAK ≦5mA
Class ll RINS ≧1MΩILEAK ≦1mA
Extension
Lead RPE ≦1ΩRINS ≧1MΩILEAK ≦1mA
RCD
RCD Type Type l (10mA) Type ll (30mA)
Function ×1 ×5 ×1 ×5
40ms 300ms 40ms

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4. Preparation before a measurement
4.1 Visual inspection
Before starting a measurement, the user should undertake visual
checks on the mains lead, case and that the correct type and rated
fuse is fitted to the appliance under test. There should also be no
evidence of damage of a nature that may impair the electrical safety
of the appliance.
4.2 Battery Voltage Check
(1) Insert batteries with reference to 11. Battery/ Fuse replacement
in this manual.
(2) Hold down Power switch 1 sec. to turn on the Tester.
(3) Check the battery indicator displayed in the upper left corner of
the LCD.
If just the last one segment of the indicator remains, the battery
voltage is extremely low. Refer to 11. Battery/ Fuse replacement
and replace batteries to perform further measurements.
If an empty battery indicator is displayed, the battery voltage is
lower than the working voltage limit. Replace batteries immediately
to keep accurate measurement.
Battery recommendation:
Use of alkaline battery is recommended. Use of other type of
batteries may cause improper indication of battery level.
4.3 Setting
4.3.1 Null setting
AS/NZS3760 pass level for Protective conductor resistance is 1 Ω,
which is a low value. So even the resistance of Test Leads will affect
the measurement result.
The Tester can cancel the resistance of test lead by pressing NULL .
The procedure of Null setting is shown below. The Null function is
held in memory even when the Tester is turned off, so theres no
need to Null the lead resistance every time. However, when replacing
fuses or test leads, it is recommended to do a Null setting again.
Note:
Null setting is possible at both Class l Test and Extension Lead
Test. However, only one Null value can be held in memory. For
example, when the Null setting is carried out at Class l Test, the set
value will also be used for Extension Lead Test (unless it is reset).
(1) Insert Test Lead with probe (MODEL7161A) into the Rpe Test
Lead terminal of the Tester, and contact the tip of the Test Lead
with the earth contacts of the socket on the Tester.
(2) Press NULL switch on any screen.

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(3) The screen switches to NULL screen, and NULL measurement
starts. The LCD shows blinking MEASmark and measured
value during a measurement. The measured value is saved and
subtracted from the further measured values.
(4) If the measured value is less than 3 Ω, previous NULL value is
cleared and a new value is saved. When 3 Ωor higher is
measured, previous NULL value is just cleared (NULL mark
disappears).
4.3.2 Voltage setting for insulation resistance measurement
(How to change between 250V and 500V)
Two different rated voltages, 250 V and 500 V, are available for
insulation resistance test. Press 250V/500V switch on the stand-by
screen or while measured result is being displayed at CL I/ CL II/
Extension lead test. Default setting is 250 V.
Sets to 250 V.
Sets to 500 V.