Fluke 165X Installation Manual page 41

165X
Users Manual
Press 4 to select the test current phase, 0° or 180°.
5.
RCDs should be tested with both phase setting, as
their response time can vary significantly depending
on the phase.
Press and release T. Wait for the test to complete.
6.
•
The primary (upper) display shows the trip time.
•
The secondary (lower) display shows any fault
voltage (N to PE).
You can also use the tester to perform the RCD tripping
time test in Auto mode, which makes it easier for one
person to perform the test.
To measure RCD tripping time using Auto mode
1. Plug the tester into the outlet.
Turn the rotary switch to the ∆T position.
2.
Press 1 to select the RCD current rating (10, 30,
3.
100, 300, 500, or 1000 mA).
30
Press 2 to select Auto mode.
4.
Press 3 to select a standard AC RCD (E).
5.
The tester supplies ½x the rated RCD current for 310
or 510 ms (2 seconds in the UK). If the RCD trips, the
test terminates. If the RCD does not trip, the tester
reverses phase and repeats the test. The test
terminates if the RCD Trips.
If the RCD does not trip, the tester restores the initial
phase setting and supplies 1x the rated RCD current
for 2000 ms. The RCD should trip and the test results
appear in the primary display.
6. Reset the RCD.
7. The tester reverses phases and repeats the 1x test.
The RCD should trip and the test results appear in the
primary display.
8. Reset the RCD.