Bedienungsanleitung Gossen Metrawatt AT3-III E (Seite 7 von 12) (Englisch)

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5.4 Testing of Differential Current

during Automatic Testing per Test Standard

SECUTEST SII / SIII / SECULIFE ST:

ÐInitiate the standard-specific setup.

ÐSelect „Sequence“ and deactivate the auto-

matic test method.

During testing according to standard, a menu

appears which proposes two options, i.e. equiva-

lent leakage current and differential current.

ÐSelect „Differential current“.

SECUTEST S2N+ / S2N+10 / S2N+W:

ÐSelect switch position „active“ here.

Line voltage is applied to the DUT via the AT3-III E

tester. The differential current of the DUT is mea-

sured while allowing for a function test of the DUT.

SECUTEST PRO (or feature I01):

Select connection type AT3-adapter for IPE

measurement in the setup of the test sequence.

5.5 High-Voltage Test

Caution: High-Voltage!

Prior to performing the test remove the

probe including probe tip from sockets 4

and 5 of the SECUTEST.../SECULIFE ST.

Do not touch the DUT, the device plug

and the earthing contact cable of the

AT3-III E during the voltage test.

Do not unplug the AT3-III E connector

cable (13) from the test socket at the

SECUTEST.../SECULIFE ST: the device

under test may still be charged, and high

voltage may be present at the earthing

contact plug.

During this test, L1, L2, L3 and N (short-circuited)

are measured against PE with the preset high

voltage (max. 1.5 kV!).

Please observe all additional safety precautions

on performing the test as well as the note on the

exclusion of liability in the operating instructions of

the SECUTEST... test instrument.

6 Testing Extension Cables

The SECUTEST port (14) may remain connected

to sockets 2 and 3 at the SECUTEST.../

SECULIFE ST during this test. Perform testing in

accordance with the operating instructions

included with the SECUTEST... test instrument!

Observe the following instructions when using the

SECUTEST.../SECULIFE ST in combination with

the AT3-III E:

The test probe at the end of the probe cable of the

SECUTEST.../SECULIFE ST must first be

connected to the respective socket (15) (probe 1

to 4) of the associated plug at the AT3-III E. In

order to test, only connect the plug and socket at

the ends of the respective extension cable to be

tested to the associated device plug and socket at

the AT3-III E. The associated connection

diagrams are shown on the following pages.

SECUTEST SII / SIII / SECULIFE ST:

Select the following test sequence from the initial

window at the SECUTEST.../SECULIFE ST test

instrument:

Extension cable: “X” WITH EL1

Note!

Testing cables by means of the AT3-III E is

only possible with this setting.

SECUTEST S2N+ / S2N+10 / S2N+W:

ÐSelect the following switch position:

VDE 0701-0702

ÐSelect EL1 as connection type.

SECUTEST BASE(10)/PRO (or feature I01):

ÐSelect AT3-III E as connection type.

6.1 Measuring Protective Conductor Resistance

Testing is performed according to the instructions

included in chapter 5.1.

6.2 Measuring Insulation Resistance

L1, L2, L3 and N (short-circuited) are measured

against PE during insulation testing. Due to good

cable insulation, a value of 2 MΩ should not be

significantly exceeded.

Note!

In conductors with control lamp (usually glow

lamp in the switch), the result of the

continuity test for L and N may be distorted

by the additional resistance of the glow

lamp.

In case of doubt, we recommend performing

a continuity test for L and N by means of

resistance measurement (R-PE or R-ISO):

e. g. SECUTEST S2/ S3...: R-PE between probe

and socket 3 or R between socket 1 and 2.

SECUTEST PRO: R-PE between probe 1 and

probe 2.

SECUTEST BASE(10):

R-PE between probe 1

and measurement cable at the earth contacts

of the test socket (test type PE(PD)-P1).

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