METREL A 1322, Instruction Manual

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A 1322 / A 1422 Measurements
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Figure 5.4: Touch leakage measurement
Warning:

During the test, DUT is powered as for normal operation. Pay attention on
possible electric shock, and danger of rotating or moving parts!
Note:

Consider any displayed warning before starting measurement!
5.5
Polarity / Active Polarity test

Refer to master instrument Instruction manual, chapter Single test
measurements , subchapter Polarity test for detailed information.
The Polarity test verifies integrity of extension cords, cable reels with distribution
sockets and similar.
The standard (normal) polarity test is suitable for cords without built-in active protection.
In case that tested item is equipped with active switch (RCD or similar) that requires
voltage for normal operation, the active polarity test shall be applied.
Procedure:
Item Comment

Prepare test system.

Connect P/S terminal on master instrument to
the EB terminal on the A 1322 / A 1422.
See chapter 4.3 Working with
the adapter.

Connect tested power cord to proper test
sockets. See Figure 5.5 and Figure 5.6.

Select test mode [normal or active] and other
test parameters on the master instrument. Regarding the type of cord.

Start measurement on the master instrument.

If Active polarity, turn on switch on protected
cord. To turn on the active switch.

Wait until measurement is finished.

Check result(s).

Store result(s). Optional