Areva MiCOM P921 - 8. Relay Rear Description

P92x/EN GS/E11 Technical Guide
Getting Started
Page 8/18 MiCOM P921-P922-P923
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8. RELAY REAR DESCRIPTION
P0386XXa
FIGURE 2 : RELAY MiCOM P921, P922 AND P923 REAR VIEW
P922 & P923 only P921, P922 and P923 P921, P922 and P923
Common Output5 1 2 Common Output1 Case earth 29 30 RS485 (resistance)
Output5 3 4 Ouput1 (NC) RS485+ 31 32 RS485–
Common Output6 5 6 Output1 (NO) Vaux (+) 33 34 Vaux (–)
Output6 7 8 Common Output2 Relay faulty 35 36 Common "Watchdog"
Common Output7 9 10 Output2 (NC) Relay healthy 37 38 Not used
Output7 11 12 Output2 (NO) Not used 39 40 Not used
Common Output8 13 14 Common Output3 VA 41 42 Common VA
Output8 15 16 Output3 VB 43 44 Common VB
Input3+ 17 18 Common Output4 VC 45 46 Common VC
Input3– 19 20 Output4 Not used 47 48 Not used
Input4+ 21 22 Input1+ VR 49 50 Common VR
Input4– 23 24 Input1– Not used 51 52 Not used
Input5+ 25 26 Input2+ Not used 53 54 Not used
Input5– 27 28 Input2– Not used 55 56 Not used
NOTA : - By default, the output contact n°1 is associated to the trip
command, which is defined in the menu « AUTOMAT. CTRL »,
sub-menu « TRIP OUTPUT RLY »
- MiCOM P921 hardware only provides 2 logic inputs and 4
output contacts.