1672/1673 FC/1674 FC
Users Manual
46
1673 FC/1674 FC:
Smooth-DC current to test type B RCD
Delayed response to S-type B (time delayed smooth-DC current RCD)
Note
For type G, K or R RCDs, choose type A (half-wave current). The limit indicator does not
consider the short delay of 10 ms of the G, K and R types. These types need a trip time
of at least 10 ms.
4. Select the test current phase, 0 ° or 180 °. Test RCDs with both phase settings, as their
response time can vary significantly.
Note
For RCD type B (
j) or S-type B (j V), test with both phase settings.
5. 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 (
j) or S-type B (j V) all three test leads are required.
6. Push and release
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.
Wait for the test to complete:
The primary display shows the RCD trip current.
The secondary display shows the fault voltage (voltage drop on PE wire) related to the
rated residual current.
If the trip current and the trip time (Type A / AC RCDs only) meets the appropriate
standard of the RCD, the limit indicator shows on the display. For more information, see
the 1672/1673 FC/1674 FC Product Specifications for the RCD Tripping Time table.
To customize the RCD tripping current measurement, see Custom RCD Setting – Var mode.
To Next Page
