P92x/EN GS/E11 Technical Guide
Getting Started
Page 10/18 MiCOM P921-P922-P923
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10. ENERGISING THE RELAY
To energise correctly the relay, please follow carefully the following instructions.
10.1 System connections
1. Please check the wiring scheme of your installation,
2. Please check that the output relay N°1 is included in your trip circuit,
10.2 Power supply connections
Connect a DC or AC (according to nominal supply rating) voltage power supply.
CONNECTIONS ARE POSITIVE TO TERMINAL F33 AND NEGATIVE TO TERMINAL F34.
DO NOT FORGET TO CONNECT THE EARTH REFERENCE (F29).
Turn on the DC or AC voltage and set to approximately rated voltage as shown on
the front panel of the relay.
Display should show:
Va =
0.00 V
LEDs should be in the following configuration :
- Green LED « Vaux » lit
- All the other LEDs should be off
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