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1662/1663/1664 FC
Users Manual
46
8. Wait for the test to complete.
• The primary display shows the trip time.
• The secondary display shows the fault voltage (voltage drop on PE
wire) related to the rated residual current.
• If the trip time meets the appropriate standard of the RCD, the RCD
indicator shows. For more information, see the RCD Tripping Time
table in the Specifications section of this manual.
Custom RCD Setting – Var mode
To measure RCD tripping time for a custom RCD setting – Var mode:
1. Turn the rotary dial to the ∆T (or I
∆N
for Tripping Current measurement)
position.
2. Press to select the Var current rating. The current custom setting shows
on the primary display. Use
to adjust the value.
3. Press to select a test current multiplier. Normally you will use x 1/2 or
x 1 for this test.
4. Repeat steps 4 through 7 listed in the RCD tripping time measurement
procedure.
5. To view the nominal setting used for the test, press .
Note
The maximum setting for type A RCDs is 700 mA. Var mode is
not available for type B RCDs.
RCD Tripping Time in Auto mode
To measure RCD tripping time in Auto mode:
1. Plug the Tester into the outlet.
2. Turn the rotary dial to the ∆T position.
3. Press to select the RCD current rating (10 mA, 30 mA, or 100 mA).
4. Press to select Auto mode.
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