Megger PAT120 User manual

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

Continuity (Bond),

Insulation and Touch

leakage probe

connection

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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