Alstom MiCOM P54 Series - Page 751

Commissioning P54x/EN CM/La4
MiCOM P543, P544, P545 & P546
CM) 10-3
CM
6.1.6 Communications using P593 interface units (X.21) 33
6.1.6.1 P593 visual inspection 33
6.1.6.2 P593 insulation 33
6.1.6.3 P593 external wiring 33
6.1.6.4 P593 auxiliary supply 34
6.1.6.5 P593 light emitting diodes (LEDs) 34
6.1.6.6 P593 optical received signal level 34
6.1.6.7 P593 loopback test 34
6.1.6.8 P593 optical transmitter signal level 34
6.1.6.9 P54x optical received signal level from P593 34
6.1.7 Loopback test 35
7. GPS SYNCHRONIZATION 36
7.1.1 Commission the P594 36
7.1.2 P594 optical signal strength at P54x relay 36
7.1.3 Check synchronization signal at P54x relay 36
7.1.4 Check GPS failure condition 36
7.1.5 Restore GPS 36
8. SETTING CHECKS 37
8.1 Apply application-specific settings 37
8.1.1 Protection communications loopback 37
8.1.2 Reset statistics 37
8.2 Demonstrate correct relay operation 38
8.3 Demonstrate correct relay operation – current differential elements 38
8.3.1 Current differential bias characteristic 38
8.3.1.1 Connect the test circuit 38
8.3.1.2 Lower slope 38
8.3.1.3 Upper slope 39
8.3.2 Current differential operation and contact assignment 40
8.3.2.1 Phase A 40
8.3.2.2 Phase B 40
8.3.2.3 Phase C 40
8.4 Demonstrate correct relay operation – non-current differential elements 41
8.4.1 Protection dependencies 41
8.4.2 Distance protection single-end testing 41
8.4.2.1 Connection and preliminaries 41
8.4.2.2 Zone 1 reach check 42
8.4.2.3 Zone 2 reach check 42
8.4.2.4 Zone 3 reach check 43
8.4.2.5 Zone 4 reach check (if enabled) 43
8.4.2.6 Zone P reach check (if enabled) 43
8.4.2.7 Resistive reach (quadrilateral characteristics only) 43