Areva MiCOM P921 - Page 322

Technical Guide P92x/EN CM/E11
Commissioning Guide
MiCOM P921-P922-P923 Page 1/28
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CONTENTS
1. INTRODUCTION 5
2. SETTING FAMILIARISATION 6
3. EQUIPMENT REQUIRED FOR COMMISSIONING 6
3.1 Minimum equipment required 6
3.2 Optional equipment 6
4. PRODUCT CHECKS 7
4.1 With the relay de-energised 7
4.1.1 Visual inspection 8
4.1.2 Insulation 9
4.1.3 On completion of the insulation resistance tests, ensure all external wiring is
correctly reconnected to the relay. 9
4.1.4 External wiring 9
4.1.5 Watchdog contacts 9
4.1.6 Auxiliary supply 10
4.2 With the relay energised 10
4.2.1 Watchdog contacts 10
4.2.2 Date and time 10
4.2.3 Light Emitting Diodes (LEDs) 11
4.2.3.1 Testing the alarm LED 11
4.2.3.2 Testing the trip LED 11
4.2.3.3 Testing the user-programmable LEDs 11
4.2.4 Opto-isolated inputs 11
4.2.5 Output relays 12
4.2.6 Rear communications port 13
4.2.6.1 Courier communications 13
4.2.6.2 Modbus communications 13
4.2.6.3 IEC60870-5-103 (VDEW) communications 13
4.2.7 Voltage inputs 14