Kewtech EZYPAT User manual
EZYPAT / EZYPAT+ / SMARTPAT
PORTABLE APPLIANCE TESTER
INSTRUCTION MANUAL
1
CONTENTS
1. Safe testing.........................................................................................................2
2. Product summary and explanation.....................................................................5
2.1 Product summary..........................................................................................5
2.2 Test Function.................................................................................................5
2.3 Features........................................................................................................5
2.4 Testers layout................................................................................................6
2.4.1 Function Switches......................................................................................6
2.4.2 LCD indications..........................................................................................8
2.4.3 Connector.................................................................................................10
2.5 Accessories.................................................................................................11
3. Specification......................................................................................................12
3.1 General specification, measuring range and accuracy...............................12
3.3 Threshold and display.................................................................................15
4. Preparation before a measurement..................................................................17
4.1 Visual inspection .........................................................................................17
4.2 Battery Voltage Check.................................................................................17
4.3 Setting.........................................................................................................17
4.3.1 Null setting ...............................................................................................17
4.3.2 Voltage setting for insulation resistance measurement............................18
(How to change between 250V and 500V) .......................................................18
4.3.3 Criteria setting for CL I leakage current test ............................................18
5. Measuring method............................................................................................20
5.1 Class I Test..................................................................................................20
5.3 Class ll Test.................................................................................................25
5.3 Extension Leads Test..................................................................................30
5.4 RCD TEST ..................................................................................................33
6. Remote testing (SMART PAT)..........................................................................37
7. Backlight ...........................................................................................................38
8. Battery / Fuse replacement...............................................................................38
8.1 Battery Replacement...................................................................................38
8.2 Fuse Replacement......................................................................................39
9. Maintenance .....................................................................................................39
2
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.
KEWTECH 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
●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 KEWTECH.
●Use only grounded mains outlets to supply the Tester.
●Do not touch the device under test whilst testing is in progress.
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.
3
DANGER
●Since a high voltage of 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, un-
expected 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.
CAUTION
●When using Test Leads with the crocodile clip, be sure to check the crocodile
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 500V. DC.
If this voltage seems too high for the appliance under test contact the
appliance manufacturer for advice. The IEE Code of Practice allows for a
touch current test where an insulation test cannot be carried out.
●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.
4
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).
5
2. Product summary and explanation
2.1 Product summary
EZYPAT / EZYPAT+ / SMARTPAT (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 The IEE Code of Practice for In-service
Inspection and Testing of Electrical Equipment: 2003.
As a guide, the IEC standard 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
Available functions vary depending on models.
Function
EZYPAT
EZYPAT+
SMARTPAT
C
L
1
Protective conductor
resistance test (Test
current 200mA DC
nominal)
レ
レ
レ
C
L
2
Insulation test (250V or
500V)
レ
レ
レ
Substitute leakage
current test
レ
レ
レ
Run leakage current test
レ
レ
Load current
レ
レ
Extension Lead test
レ
レ
レ
RCD Test
レ
Remote function
レ
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
Remote testing (SMARTPAT only)
6
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.
(Cont. test: 1 sec.)
Long press: Starts Extension lead test.
(Cont. test: 5 sec.)
NULL
switch
Long press (at least 2 sec.): Performs NULL.
Connector
Display(LCD)
Keys
Connector
7
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
Short press: Switches output voltage for insulation
resistance test between 250 V and
500 V. (Default setting: 250 V)
Long press: Switches threshold current for CL I
leakage current test between 0.75 mA
and 3.5 mA. (Default setting: 0.75 mA)
Light
switch
Short press: Turns on/ off LCD backlight.
Long press: Enters into remote mode.
SMART PAT only
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)
8
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
SUB: Substitute leakage current
RUN: Leakage current test under actual working
condition
Rated current for RCD test
Measurement in process
Switches are locked and Tester is in remote test mode.
(The Tester is being controlled via a tablet device.)
Protective conductor resistance
Insulation resistance
Insulation resistance between L-N
(Extension Lead Test)
Leakage current
Load current
Mains voltage
Polarity test result
Indicates items failed the test.
9
RCD test range
Prompts to check and turn on a DUT.
Incorrect connection
Indicates the resistance between L-L (N-N) is less than
10 Ω and 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 Ωor lower at polarity test.
Short-circuited L-N warning –resistance between L-N
is 100 kΩ or 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.
Indicates the measured protective conductor
resistance is between 0.11 and 0.88 Ω.
This manual suits for next models
2
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