Megger PAT32 Series Bedienungsanleitung

PAT32 Series

Portable Appliance Testers

USER GUIDE

GUIDE DE L’UTILISATEUR

GEBRAUCHSANLEITUNG

SAFETY WARNINGS

✱PAT 32 must be properly earthed. A supply socket that has a protective earth contact must be used.

✱Test leads, probes and crocodile clips must be in good order, clean and with no broken or cracked insulation.

✱Circuit connections and exposed metalwork of an appliance under test must not be touched.

✱Tests must be performed in the speciﬁed sequence. If an appliance fails a test, the fault causing the failure must be

rectiﬁed before testing. Re-testing must commence from the start of the sequence.

✱Replacement fuses must be of the correct size, type and rating. See 'Speciﬁcation' section.

✱The instrument must not be used in damp conditions or if any part of it is damaged.

✱Safety Warnings and Precautions must be read and understood before the instrument is used. They must be observed

during use.

NOTE

THE INSTRUMENT MUST ONLY BE USED BY SUITABLY TRAINED AND COMPETENT PERSONS.

Symbols used on the instrument

Evaluate display reading against appliance details and refer to this User Guide

Caution: Refer to accompanying notes.

Equipment complies with relevant EU Directives

User Guide

Safety Warnings 2

General Description 4

Features and Controls 6

Test Mode Summary 7

Performing tests – General 9

Appliance Testing 10

Extension lead testing (UK) 14

Speciﬁcations 15

Accessories 18

Repair and Warranty 19

Guide de l’utilisateur

Avertissments de Securité 22

Description génerale 23

Dispositifs et Commandes 25

Sommaire de Mode d’essai 23

Exécution des essais – Géneralitiés 26

Mise à l’essai de l’appareil 29

Mise à l’essai de la Rallonge 33

Spéciﬁcation 34

Accessoires 37

Réparation et Garantie 38

Gebrauchsanleitung

Sicherheitswarnung 42

Allgemeine Beschreibung 43

Funktionen und Steuerelemente 45

Zusammenfassung des Testmodus 46

Durchführung von Tests 48

Testen von Geräte 49

Verlängerrungskabeltest 53

Speziﬁkation 54

Zubehör 57

Reparaturen und Garantie 58

Contents

Introduction

Megger PAT 32 series are designed to check the

electrical safety of any product ﬁtted with an appropriate

mains plug, including information technology (IT)

equipment, domestic appliances, industrial appliances

and power tools.

The following tests are available:

•Circuit check

•Fuse check

•Earth Continuity test

•10 Amp Earth Bond test

•25 Amp Earth Bond test

•Insulation test

•Extension lead tests (ELT1 or ELT2

required)

-Polarity (UK only)

-Earth Bond

-Insulation

Tests are effected by plugging the portable appliance or

extension lead into the relevant socket and pressing the

relevant Test switch. The readings from each test are

shown on the unique analogue / digital liquid crystal

display. The measurement scale for Earth Bond is

marked with pass bands. This provides a rapid indication

of a test Pass or Failure and allows proper test results to

be kept.

Applications

Appliances and electrical equipment with Safety Class I,

Class II and Safety Class III insulation may be tested.

These classes of safety are deﬁned in various IEC and

BS safety speciﬁcations, and in general are:-

Class IAppliances which have functional

insulation throughout and an

earth connected body i.e. an ‘Earthed‘

appliance.

Class II Appliances which have both functional

and additional insulation, and where

any metal parts cannot become ‘Live’

under fault conditions. This is ‘Double

Insulation’ indicated by .

Class I/II Appliances having part of the

enclosure which meets Class I

requirements and part which meets

Class II.

Class III Appliance where protection against

electric shock is provided by an SELV

supply. Class III construction is

indicated by the mark.

General Description

III

Typical uses for Megger PAT 32 are:

•Periodic tests of equipment used in

Factories, Offices, Local Education

Authorities, Hospitals etc.

•Routine tests before and after hiring

electrical equipment.

•Basic tests following equipment repair.

•Tests by manufacturers and distributors.

Speciﬁcations

The Megger PAT 32 may be used to test equipment

originally manufactured to a range of speciﬁcations such

as:

•IEC 335 -1 / BS3456

•BS 2769

•BS 4533

•BS415

•BS 7002

Power cord

The colour code of the cord is:

Phase Brown

Protective Earth Yellow / Green

Neutral Blue

If using a fused plug, a 3 Amp fuse to BS 1362 should be

ﬁtted.

Note: Aplug severed from the power cord should be

destroyed, as a plug with bare conductors is hazardous

in a live socket outlet.

Features and Controls

Fuse test terminals

110 Volt Socket

to BS4343 /IEC309

230 V Socket

to BS1362

230 V Belgian / French socket

230 V

Circuit Test switch

10 A Earth Bond Test switch 25 A Earth Bond Test switch

Insulation Test switch

Earth Bond Test

Earth Continuity Test terminal

Analogue / Digital LCD

Test Sequence

For safety reasons, it is important that appliance tests

are carried out in the correct sequence:-

•Circuit Test

• Fuse Test (if necessary)

• Earth Continuity Test

and / or

• Earth Bond Test

• Insulation Test

If a fault on an appliance is detected, testing must be

stopped and the fault rectiﬁed. Testing must then re-

commence from the beginning of the test sequence.

Circuit Test

Alow voltage d.c. Resistance test of the Phase to

Neutral circuit.

FuseTest (if supply or appliance fuse is suspect)

Checks the continuity of most types of fuses when

removed from the appliance.

Earth Continuity Test

The earth continuity test may only be performed on

Class I(Earthed) appliances.The test checks protective

conductor continuity and the earth connection to the

metal parts of the appliance at a current of 100 mA.

This test is used where a higher current Earth Bond test

may cause damage to the appliance. A very low voltage

(100 mV) is established between the main supply plug

earth pin and the metal parts of the appliance. The low

voltage of this test is designed to reveal bad connections

by not breaking down any oxide ﬁlms.

Earth Bond Test

The Earth Bond test may only be carried out on Class I

(earthed) appliances.

The test checks protective conductor continuity and the

earth connection (or Bonding) to the metal parts of the

appliance. A very low voltage is established between the

main supply plug earth pin and the metal parts of the

appliance.

Achoice of two Earth Bond tests is available:-

i) Passing a current of 10 Amp. Used for

appliances and equipment fused at 5 Amp or

less.

ii) Passing a current of 25 Amp. Used for

equipment fused at greater than 5 Amp.

Test Mode Summary

Insulation Test

Checks the integrity of the insulation. For class I

appliances, the test voltage is applied to the main supply

plug between Phase and Neutral (shorted together) and

the Earth pin, which is held at earth potential.

For Class II appliances, the Earth Bond lead is used to

make the return connection from the appliance to the

instrument earth bond terminal.

The PAT 32 develops 500 V d.c. into 0.5 MΩand

complies with the 1mA load current requirement.

Caution:- If an Insulation test fails, there will be a

leakage path to earth somewhere on the appliance.

Any metal parts of the appliance could become ‘Live’

and give the user an electric shock. Do not touch

the appliance when applying the test.

Extension Lead Test

Using the Megger ELT1 or ELT2 optional accessory,

the PAT 32 checks Continuity, Earth Bond and Insulation

of both 230 V and 110 V extension leads. (110 V adaptor

required). ELT1 (UK version) also checks the Polarity of

the extension lead connections.

Error displays

Internal faults within the instrument are indicated by error

messages consisting of the letter ‘ ‘followed by a 2 digit

number. Continuous testing on the Earth bond ranges

may cause the display of , and the analogue pointer

to move off the left hand end of the scale. Cease testing

and allow the instrument to cool for about 15 minutes.

If any error message displays, and the instrument will not

re-set itself, return the instrument for service. See Repair

and Warranty.

Test Mode Summary

Appliance Visual Checks

Before carrying out PAT32 electrical tests, the appliance

and its accessories must be given a visual inspection to

identify any physical faults that may not be revealed by

electrical testing.

Visually examine and check the condition of the:-

•Supply plug

•Plug fuse type and rating (if applicable)

•Mains cord

•Cord connection grommet (if applicable)

•Mains On /Off switch

• Auxiliary switches

•Conducting / Insulated parts of the outer case

•Removable covers which must be in place.

Any signiﬁcant faults or defects must be rectiﬁed before

proceeding with the PAT 32 electrical tests.

Auto Nulling and Self check

When not being operated, PAT 32 will periodically carry

out measurement nulling. The word is displayed.

Press any Test switch to override this function.

A self check function is also continuously performed on

the selected test range.

If testing is interrupted, for instance due to the appliance

not being switched On, or the mains fuse being ruptured,

testing must be repeated from the start of the test

sequence in the corrected condition. i.e. with a sound

fuse and with the appliance switched On.

Performing Tests – General

Tests must be performed with the appliance

switched On and with good fuse(s) ﬁtted.

Preliminary Testing Procedure

1. Plug the PAT32 into the 230 V mains

power supply, and switch the supply on. Full

screen details are displayed, and a self check is

carried out. On completion, the ‘Home’ screen is

displayed.

2. Determine the Class / type of the appliance to

be tested.

Class I– Earthed appliance

Class II – Double insulated appliance

Class III - S.E.L.V appliance

3. Plug the appliance into the appropriate socket

on the instrument front panel and switch the

appliance On.

Appliance Testing Procedure

Circuit Test

1. Press and hold the Circuit Test switch. The

Circuit screen is displayed.

2. Phase to Neutral resistance is displayed

directly in k.

Note:- Readings of approximately 0,01 kΩcan be

expected from appliances incorporating large wound

components such as large transformers and motors.

Heating appliances may give readings of approximately

0,02 kΩ.

3. Release the Test switch.

Appliance Testing

Tests must follow the given sequence

If fault(s) are indicated, cease testing and

rectify. Re-commence testing from the

start of the test sequence.

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