19
W
Warning
• Test the connection between the N-conductor and earth before starting the test. A
voltage between the N-conductor and earth may influence the test.
• Leakage currents in the circuit following the residual current protection device may
influence measurements.
• The displayed fault voltage relates to the rated residual current of the RCD.
• Potential fields of other earthing installations may influence the measurement.
Note:
If the L and N terminals are reversed, the tester will auto-swap them internally and
continue testing. If the tester is configured for UK operation, testing will halt and you will
need to determine why the L and N are swapped. This condition is indicated by arrows
above or below the terminal indicator symbol (
).
Type A RCDs do not have the 1000 mA option available.
To measure RCD tripping current:
1. Turn the rotary switch to the
position.
2. Press F1 to select the RCD current rating (10, 30, 100, 300, or 500 mA). If the RCD has a
special nominal current setting other than the standard options, 10, 30, 100, 300, 500
1000 mA, you can use a custom setting with the VAR mode.
3. Press F2 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)
4. Press F4 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.
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 31.
To measure RCD tripping current for a custom RCD setting - VAR mode:
1. Turn the rotary switch to the
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.
