Electrical Tests - Siemens 7PG17-XR151 Manual

Electrical Tests

Check that the relay operates over its operating range, it
should operate smoothly and the armature go fully home.
XR151:
Operating Range
D.C. relays 70 – 115% of rated voltage
Relays must reset when the applied voltage is reduced to
not less than 26% of rated voltage.
XR152 & 153:
Operating Range
D.C. relays 70 – 115% of rated voltage
Relays must reset when the applied voltage is reduced to
not less than 26% of rated voltage.
Siemens Protection Devices Limited 4