Megger PAT120 Manual de usuario
PAT120 Series
Portable Appliance Tester
User Guide
WWW.MEGGER.COM
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Contents
Unpacking the carton 3
Safety warnings 4
Symbols used on the instrument 5
Symbols used on the connection panel 6
Instrument layout 6
PAT120 and display information 6
Measurement symbols 7
Instrument buttons 7
User guide INSTRUCTION symbols 8
Carry strap fitting and removal 9
Switching ON / OFF 10
Class I test (PAT120) using substitute leakage @ 40 V ac 11
Class II test (PAT120) Using Substitute Leakage @ 40 V ac 12
Power cord test (PAT120) 13
Extension lead test (PAT120) 14
Fail handling 15
Factory reset to default settings 16
International model variations 16
Battery and fuse replacement (PAT120, 150) 17
Battery replacement 17
Fuse replacement 18
Preventive maintenance 18
Specification 18
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Thank you for purchasing the Megger portable appliance tester.
For your own safety and to get the maximum benefit from your instrument, please ensure that you read and understand the safety warnings and instructions before attempting to use the
instrument.
These instruments are designed and manufactured by:
Megger Instruments Limited
Archcliffe Road
Dover Kent
CT17 9EN
England
Megger Instruments Limited reserves the right to change the specification of these instruments at any time without prior notice.
Unpacking the carton
Unpack the carton contents carefully. There are important documents that you should read and keep for future reference.
Please complete the pre-paid warranty card and return it to Megger Limited as soon as possible to help us reduce any delays in supporting you should you need assistance.
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Safety Warnings
The following Safety Warnings and Precautions must be read and understood before the instrument is used. They must be observed during use.
■ Only use test leads and accessories supplied or approved by Megger Instruments Limited
■ At any time the Gsymbol or Fsymbol is displayed, the user guide and warnings documentation must be consulted to identify the nature of the hazard and any actions
necessary to avoid the hazard
■ Do not use the instrument if there are any signs of damage
■ This instrument meets the EMC requirements of Class A applications. Not for use in domestic installations
■ All test leads, probes and clips must be in good order, clean and with no broken or cracked insulation
■ Probes and clips should be held behind the finger guard
■ Test leads not used during a measurement should be disconnected from the Appliance tester
■ During testing, ensure no hazard will exist as a result of normal running or under fault conditions
■ During testing the unit under test (appliance) should not be touched, other than using the appropriate accessories, as faulty appliances can present a shock hazard
■Do not touch the exposed parts of test leads during tests as hazardous voltages may be present
■Do not intentionally connect test leads to live systems or hazardous voltages
■Do not touch the IEC extension lead socket pins especially during a test, as hazardous voltages may be present due to a potentially faulty appliance
■Do not touch the exposed earth pins of the 230 V test socket during a test, as voltages may be present due to a potentially faulty appliance
■Serviceable fuses should only be replaced with those that are suitably rated
■Replacement fuses must be of the correct rating and type. Refer to page 18
■If this instrument is used in a manner not specified in the supplied documentation, the protection provided by the instrument may be compromised
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Symbols used on the instrument
G Caution: refer to accompanying notes.
F Danger: Mains voltage present during testing
c Equipment complies with relevant EU Directives
Equipment complies with ‘C tick’ requirements
Caution: Earth pins of the 230 V test socket will become hazardous if test
lead P1 is in contact with hazardous voltages during continuity test.
f Fuse failure
This equipment should be disposed of as electronic waste
Battery type fitted
Do not connect to 230 V supply
Caution: Earth pin of the 230 V test socket will become hazardous if test
lead P1 is in contact with hazardous voltages during continuity test
Product Safety Category
CATII 300 V - MEASUREMENT CATEGORY II Equipment connected between the electrical outlets and the user’s equipment.
WEE Directive
The crossed out wheeled bin symbol placed on Megger products is a reminder not to dispose of the product at the end of its life with general waste.
Megger is registered in the UK as a Producer of Electrical and Electronic Equipment. The Registration No is WEE/HE0146QT
For further information about disposal of the product consult your local Megger company or distributer or visit your local Megger website.
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Instrument Layout PAT120
Display information PAT120
Test results
Test
information
Information/
Warnings
Overall PASS/FAIL
Neck strap
slot
Test groups
Power ON – Hold for >0.5s Backlight
Main test
socket
Symbols used on the connection panel
PAT120 connector panel
GDo NOT connect P1 and P3 sockets to hazardous live voltages
P1
Continuity (Bond),
Insulation and Touch
leakage probe
connection
P3
IEC power cord
and extension lead
adaptor socket.
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Measurement (display) symbols
PAT120
Continuity of the protective earth
conductor Test in progress
Insulation resistance between the
Live/Neutral conductors and earth Measurement locked ON
Alternative method:- 40 V
ac leakage test for protective
conductor current and touch
current. Battery powered test
GNotice: Refer to user guide
WResistance in ohms
(English language models)
Alternative method:- 40 V ac
leakage test for for protective
conductor current. Battery
powered test
MWInsulation resistance in Meg Ohms
(ohms x 1x106)
mA Leakage current in milliamps
(English language models)
Alternative method:- 40 V ac
leakage test for for touch current.
Battery powered test
Cable polarity correct
Power lead or Extension lead
polarity test Live to Neutral cross polarity
Test probe P1 to be connected Live to Neutral short circuit
detected
Test or overall test group passed Live to Earth short circuit
detected
Test or overall test group failed Open circuit detected
fFuse failed General warning - Appliance open
circuit or not switched on
Instrument Buttons
Power button - Hold down for 0.5 second to switch on,
Hold down for 2 seconds to switch off
Abort button - press to stop test or exit a setup mode
Class I button
Class II button
Extension lead button
Backlight button
NOTE: The PAT100 instruments perform various pre-checks prior to testing to ensure the
asset is not short-circuit and is switched on
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User guide INSTRUCTION symbols
Press the button
Press and hold for greater than 0.5 seconds
Connect the equipment to be tested to the
instrument
Connect the P1 test lead to socket P1 on the
Pat100 and the probe to exposed metalwork
Ensure the probe is NOT connected to a 230V
source.
Connect the P1 test lead to different conductive
points on the equipment under test during the
measurement
Ensure equipment under test is switched ON
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Carry strap fitting and removal
Fitting the carry strap:
Removing carry strap:
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Switching ON / OFF
Switching ON
i) ii) iii) PAT120 iv)
>0.5 s
Switching OFF
i) Manual OFF ii) Auto OFF
>2 s Unit switches after 3 minutes of
inactivity (not adjustable)
Backlight
Aborting a test
A test can be aborted at any time by pressing the Power (ESC) button
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