Owner's manual

6.2.3 Testing

(1) Press the TEST BUTTON

Operating time of RCD is displayed on LCD. At Auto Ramp,

operating current value of RCD will be displayed.

● × 1/2.................The Breaker should not trip.

● × 1.....................The Breaker should trip.

● × 5.....................The Breaker should trip.

● DC..................... The breaker should trip.

● Auto Ramp( ).. The Breaker should trip. Check Trip Out Current.

(2) Press the 0°/180°switch to change the phase and repeat step(1).

(3) Change the phase again and repeat step (1).

●

Be sure to return the tested RCD to the original condition after the

test.

MAKE SURE TO KEEP CLEAR OF EARTHED METAL DURING THE

OPERATION OF THESE TESTS.

Note:

●

If the RCD does not trip, the tester will supply the test current for a

maximum of 1000ms on the X1/2 and X1 ranges. The fact that the

RCD has not tripped will be evident because the P- N and P- E LEDs

will still be on.

●

If "I⊿n" setting is grater than the rated residual current of RCD, RCD

will trip and "no" may be displayed on LCD.

●

If a voltage exists between the protective conductor and earth, it may

influence the measurements.

● If a voltage exists between neutral and earth, it may influence the

measurements, therefore, the connection between neutral point of

the distribution system and earth should be checked before testing.

● If leakage currents flow in the circuit following the RCD, it may

influence the measurements.

● The potential fields of other earthing installations may influence the

measurement.

● Special conditions of RCDs of a particular design, for example S-

type, shall be taken into consideration.

CAUTION

● When the Uc voltage rises to UL value or greater, the

measurement is automatically suspended and "UcH" is

displayed on the LCD.