Electrical
Installation
Tester
Making
Measurements
33
options, 10, 30, 100, 300, 500 1000 mA, you can use a custom setting with
the VAR mode.
3. Press
to select the RCD test-current waveform:
•
– AC current to test type AC (standard AC RCD) and type A
(pulse-DC sensitive RCD)
•
– Half-wave current to test type A (pulse-DC sensitive RCD)
•
– Delayed response to test S-type AC (time delayed AC RCD)
•
– Delayed response to S-type A (time delayed pulse-DC
sensitive RCD)
•
– Smooth-DC current to test type B RCD
•
– Delayed response to S-type B (time delayed smooth-DC
current RCD)
4. Press
to select the test current phase, 0
°
or 180
°
. RCDs should be
tested with both phase settings, as their response time can vary
significantly depending on the phase.
Note
For RCD type B
(
)
or S-type B
(
)
, you must test with both
phase settings.
5. Press and release
. Wait for the test to complete.
•
The primary (upper) display shows the RCD trip current.
•
If the trip current is according to the appropriate standard of the RCD,
the RCD
indicator displays. For more information, see Maximum
Trip Time Table on page 54.
To measure RCD tripping current for a custom RCD setting - VAR mode:
1. Turn the rotary switch to the I
Δ
N
position.
2. Press
to select the VAR current rating. The current custom setting
shows on the primary display. Use the
arrow keys to adjust the value.
3. Repeat steps 3 through 5 listed in the preceding RCD tripping current
procedure.
4. To view the nominal test setting, depress the
arrow key.
Note
The maximum setting for RCDs is 700 mA. VAR mode is not available
for type B RCDs.
