Fluke 1672 - Custom RCD Setting - Var Mode; RCD Tripping Time in Auto Mode

Multifunction Tester
Measurements
43
9. Select the test current phase, 0 ° or 180 °. Test the RCDs with both phase settings, as the
response time can vary significantly.
Note
For RCD type B or S-type B , you must test with both phase settings.
10. At a minimum, connect the leads to L and PE of the system under test, or plug the mains
test cord into the socket under test.
Note
For RCD type B or S-type B all three test leads are required.
11. Push
T.
If Auto Start is turned on, the test starts automatically as soon as the mains voltage is
detected and the required test leads are connected.
12. 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 limit indicator shows
PASS. For more information, see the 1672/1673 FC/1674 FC Product Specifications at
www.fluke.com
for the RCD Tripping Time table.
Custom RCD Setting – Var mode
To measure RCD tripping time for a custom RCD setting – Var mode:
1. Turn the rotary dial to the ΔT (or I
ΔN
for Tripping Current measurement) position.
2. Select the Var current rating. The current custom setting shows on the primary display. You
can adjust the value.
3. Select a test current multiplier. Normally, use x 1/2 or x 1 for this test.
4. Repeat steps 4 through 7 listed in the RCD tripping time measurement procedure.
Note
The maximum setting for type A RCDs is 700 mA.
RCD Tripping Time in Auto mode
To measure RCD tripping time in Auto mode:
1. Plug the Tester into the outlet.
2. Select ΔT.
3. Select the RCD type.