METREL AutoPAT MI 2143 Manual de usuario

AutoPAT

MI 2143

Instruction manual

Ver 1.0, Code no. 20 750 779

Distributor:

Producer:

Metrel d.d.

Ljubljanska cesta 77

SI-1354 Horjul

E-mail: metrel@metrel.si

http://www.metrel.si

Markon your equipment certifies that this equipment meets the requirements of the EU

(European Union) concerning safetyand interference causingequipment regulations

No part ofthis publication maybe reproduced or utilized in anyform or byanymeans

without permission in writing from METREL.

MI 2143 AutoPAT Table of contents

1General description....................................................................................................4

1.1 Warnings.................................................................................................................4

1.2 Applied standards...................................................................................................4

2Instrument description...............................................................................................5

2.1 Front panel..............................................................................................................5

2.2 Connector panels....................................................................................................5

2.3 Bottom.....................................................................................................................6

2.4 Indicator panel.........................................................................................................7

2.4.1 Warning indications...........................................................................................7

3Instrument operationand application.......................................................................8

3.1 General...................................................................................................................8

3.2 Measurement limit values.......................................................................................9

3.3 Test setup.............................................................................................................10

3.4 Test procedure......................................................................................................12

4Technical specifications...........................................................................................14

5Maintenance..............................................................................................................16

5.1 Periodic calibration................................................................................................16

5.2 Fuse......................................................................................................................16

5.3 Service..................................................................................................................16

5.4 Cleaning................................................................................................................17

6Instrument set and accessory.................................................................................18

MI 2143 AutoPAT General description

1General description

AutoPATMI 2143 is a portable test instrument intended for automatic verification ofthe

electrical safetyofportable electrical equipment. The instrument is designed for testing

the following product groups:

• Class I and Class II equipment;

• General and information technology(IT) equipment;

• Power supplycords.

• This instrument covers the following test functions:

• Earth bond resistance,

• Insulation resistance,

• Substitute leakage current, and

• IEC cord polaritytest.

• The instrument also executesfuse pre-test to assure proper connection of tested

appliance.

• Simple manipulation offers fast selection of desired test. The unique indication of

test resultsenablesfast decision on tested product condition.

• The instrument is designed for testing 230 V appliances but a special test adapter

enables to make tests of110 V appliances.

• AutoPATMI 2143 is Class II product and ensures safe work with tested equipment.

Tested equipment is separated from mains supply.

1.1 Warnings

In order to reach high operator safetywhile carrying out tests using AutoPAT, as well as

to keep the test equipment undamaged, it is necessaryto consider the following

warnings:

If the test equipment isused in a manner not specified in this user manual, the

protection provided bythe equipment maybe impaired!

Read this user manual carefully, otherwise use ofthe instrument maybe dangerous for

the operator, for the instrument or for equipment under test!

Do not use the instrument and accessories ifanydamage is noticed!

In case a fuse hasblownfollowthe instructionsin thisusermanual to replace it!

Service intervention or calibration procedure is allowed to be carried out onlybya

competent authorized person!

Use onlystandard or optional test accessorysupplied byyour distributor!

1.2 Applied standards

The AutoPATMI 2143 instrument has been manufactured and tested in accordance

with the following standards:

SafetyEN 61010-1

Electromagnetic compatibilityIEC 61326

Measurements BS89

MI 2143 AutoPAT Instrument description

2Instrument description

2.1 Front panel

CLASS

START

STOP

CLASSI

CLASS II

General

IECCord

PASS

FUSE

EARTH25A

POLARITY

FAIL

Front panel

Legend:

1START/STOP key

2APPLIANCE selection key

3SafetyCLASS selection key

4Indicator panel

2.2 Connector panels

Connector side

MI 2143 AutoPAT Instrument description

Mains supply entry

Legend:

1Test socket

2IEC lead connector

Warning! The connector input is onlyfor test purposes; do not connect it to mains

supply!

3Earth bond connector, also used asan input for class II measurement of

insulation

Note: During IEC cord testing the earth bond clip need not be connected into

earth bond connector.

4Mains supplycord

2.3 Bottom

Bottomside

Legend:

1Plastic cover with rubber foot, for inclined position

2Screw.

3Label with measurement data.

4Fuse compartment cover.

5Information label.

6Fixing screwfor fuse compartment cover (see chapter 11.2 Fuses for instructions

on fuse replacement).

7Rubber foot.

MI 2143 AutoPAT Instrument description

2.4 Indicator panel

CLASSI

CLASSII

General

IECCord

PASS

FUSE

EARTH25A

POLARITY

FAIL

Indicators

Legend:

1Final result of tests

2Particular test function indicator field

3Indication of selected appliance safetyclass

4Tested equipment type

Indicator panel offers all indications which are necessaryas support to automatic test

procedure.

PASS / FAIL indicators showthe final result ofexecuted tests. PASS meansthat results

ofall executed tests are within the predefined limits.

Flashing PASS indicator means that the result ofindicated test function, which is also

flashing, is between two limits of that function.

Test function indicator field containsindications of all tests of the instrument. Ifa test

sequence requires particular test, itsindicator is turned on when the measurement is

performed. After all tests in the test sequence are finished all involved indicators stay

illuminated'. Flashing indicator means that that test is finished with a result outside the

predefined limits.

Fuse indicates onlypower on or power offstate of the tested appliance.

Activityofthe instrument is also indicated with buzzer sound.

2.4.1 Warning indications

Overtemperature protection: indicators EARTH 25A and Earth 100mA begin flashing

when the internal temperature limit of 80 °C is reached. In that case earth bond test is

skipped until temperature is lowenough.

Overvoltage protection: before each test the instrument checks ifexternal voltage is

applied between L and PE, N and PE on test socket, or earth bond clip and PE. The

instrument makes sound indication when the voltage is higher than approximately10 V.

MI 2143 AutoPAT Instrument operation and application

3Instrument operation andapplication

3.1 General

Automatic appliance testing with AutoPATMI 2143 is verysimple. It is just necessaryto

select class and type ofappliance and start the test sequence. It is also possible to stop

testing before completion bypressing START / STOP keyagain. In this case all test

indicators are cleared.

Onlythose tests that are required for selected options are executed. Following is a short

description oftests.

FUSE

This is pre-test onlyand is intended to detect iftested appliance is turned on. The

instrument measures the impedance between L and N on test socket. If this impedance

is too high then fuse indicator starts flashing. This pre-test does not have anyinfluence

on final PASS / FAIL decision. The reason is that verylowpower consumption

appliances exist and thus theymayhave impedance higher than the limit.

EARTH 25A

Continuitytest ofPE connection is executed between test socket and earth bond clip.

Earth bond clip has to be connected to accessible conductive partsthat are connected

to PE ofthe appliance supplycord. Test current of 25 A is required for most appliances

in safetyclass I. The instrument contains two limits for this test.

EARTH 100mA

Some information technology(IT) appliances are verysensitive and could be damaged

during standard PE continuitytest as defined above. For this case the test current is

limited to the nominal value of100 mA.

INSULATION

For the CLASS I appliance the insulation resistance is measured between PE and

shorted L and N conductors. The insulation resistance for CLASS II appliance is

measured via earth bond clip instead of PE. Test voltage is 500 V nominal, onlyfor

CLASS I ITis 250 V. This test shows that the resistivityofthe dielectric between

accessible conductive part and L / N is high enough.

For safetyreason do not touch anyaccessible conductive partswith capacitance higher

than 90 nF during insulation testing.

SUB LEAKAGE

Instead ofmeasurement of leakage current with a real mains supply, this measurement

is executed with separated voltage source with output voltage lower than safetylimit.

MI 2143 AutoPAT Instrument description

The source is connected between PE and shorted L / N conductors. Current into PE is

measured and scaled to supplyvoltage.

POLARITY

This is a special test for detachable supplycords. Polarityin this case meanscorrect

connection between the terminals of a plug on one side and a socket on the opposite

side.

NOTE!

If polaritytest with EU version of Autopat FAILS the first time, tryto swap L and N

terminals oftested IEC cord and repeat the test. Ifresult is »PASS« at least one time,

then IEC Cord is OK, otherwise it is not.

3.2 Measurement limit values

Appliances are designed for different purposes and various supplyconditions. These

ranges ofconditions are covered byvarious general and product standards. A part of

the standards are requirements against electric shock with test conditions and limit

values. AutoPATMI 2143 is designed for test conditions and compares results

according to the standards mentioned in paragraph 1.3 Applied standards.

The following limit values are applied for the built-in functions:

230 V appliances

Test function Appliance

type Safetyclass Limit values Test condition

FUSE CLASS I 40 V

General CLASS II

CLASS I

IT CLASS II

30 kΩ

EARTH 25 A General CLASS I 25 A

IEC cord CLASS I 0.1 Ωand 0.5 Ω*

EARTH 100 mA ITCLASS I 0.1 Ωand 0.5 Ω*100 mA

INSULATION CLASS I 1 MΩ500 V

General CLASS II 2 MΩ

CLASS I 1 MΩ250 V

IT CLASS II 2 MΩ

IEC cord CLASS I 1 MΩ500 V

SUB LEAKAGE General CLASS I 40 V

ITCLASS I 0.75 mA and 3.5

mA*

POLARITYIEC cord CLASS I <50 V

110 V appliances

Test function Appliance

type Safetyclass Limit values Test condition

General CLASS I

EARTH 25 A IEC cord CLASS I 0.1 Ωand 0.5 Ω*25 A

MI 2143 AutoPAT Instrument description

EARTH 100 mA ITCLASS I 0.1 Ωand 0.5 Ω*100 mA

CLASS I 1 MΩ

General CLASS II 2 MΩ500 V

CLASS I 1 MΩ250 V

IT CLASS II 2 MΩ

INSULATION

IEC cord CLASS I 1 MΩ500 V

General CLASS I

SUB LEAKAGE ITCLASS I 0.75 mA and 3.5

mA*40 V

Note:When test result is between two limit values then PASS and appropriate test

function indicator are flashing. This is valid onlyifresults of other test are acceptable. If

result is out of the worst limit, FAIL indication is activated. In the case offlashing PASS

indicator the tested appliance can still be acceptable for known reason, e.g. long mains

cord.

In the case that numeric results are required, we recommend to test the appliance with

AlphaPATMI 2142, OmegaPAT MI 2140, or BetaPATMI 2141.

3.3 Test setup

For regular testing it is required to prepare appropriate test setup. This setup must

include all connectionsrequired for all measurements of particular appliance.

Following figures represent connectionsfor testing appliance.

APPLIANCE

UNDER

TEST

accessible

conductivepart

connectedtoPE

Connection of the CLASS I appliance

Note: Ifappliance contains accessible conductive parts not connected to PE, then the

test has to be repeated as for CLASS II appliance to test the insulation resistance of

those parts to L / N.

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