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400 Series

EN - 30

6. If the RCD does not trip, the

instrument gives a double

acoustic signal which signals

the positive result of the test

and then displays a screen

similar to the one reported

here to the side

RCD

0°

> 999ms

FRQ=50.0Hz Ut=1.4V

VP-N=228V VP-Pe=228V

0° or 180° type current

Tripping time of the RCD

Detected value for contact voltage Ut

compared to the nominal value of

the set residual current

RCD OK

x1/2 30mA 50V

Func IdN RCD UL

The results displayed can be saved by pressing the SAVE key twice or the

SAVE key and, subsequently, the ENTER key (§ 8.1)

6.4.3. x1, x2, x5 mode

As an alternative:

Press the GO/STOP key on the instrument or the START key on

the remote probe once. The instrument will start measuring with

a “0°” type current, injecting a current in phase with the positive

half-wave of voltage.

Or:

Press the GO/STOP key on the instrument twice or the START key

on the remote probe before the hyphens disappear. The instrument

will start measuring with a “180°” type current, injecting a current in

phase with the negative half-wave of voltage.

CAUTION

If message “Measuring…” appears on the display, the instrument is

performing measurement. During this whole stage, do not disconnect the

test leads of the instrument from the mains.

6. The “x5” test is not available for 500mA, 650mA and 1A A-type RCDs

7. When the RCD trips and

separates the circuit, if the

tripping time is within the

limits reported in Table 5, the