Technical Guide
Testing self-powered relays with SVERKER 900
Page 16(33)
Figure 14. Pre-fault of 0,25 A for 1
second in MTT pre-fault and fault.
Set then the “first fault” values (Figure 15):
Figure 15
. “First fault” of 0,8 A (timeout
after 10 seconds) in MTT pre-fault and
fault.
Select MTT by tapping on its button. MTT is now armed (Figure 16):
Figure 16. Activation (arming) of the
MTT mode in pre-fault and fault. Press
the knob to start the injection
By pressing the knob, the pre-fault and fault sequence will start and the operate (trip) time will be recorded
(Figure 17):
