Areva MiCOM P921, Technical Manual

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Technical Guide P92x/EN CO/E11
Connection Diagrams
MiCOM P921-P922-P923 Page 1/10
aB C D
CONTENT
1. ANALOGUE INPUTS 3
1.1 VT inputs 3
1.1.1 3VTs (phase-neutral) configuration 3
1.1.2 3VTs (phase-neutral) + residual VT configuration 4
1.1.3 3VTs (phase-phase) + residual VT configuration 5
1.1.4 2VTs + residual VT connection 6
1.1.5 LV connection for P92x (220-480V range) 7
2. PORTS CONNECTION 8
2.1 Front port connection (RS232) 8
2.2 RS485 rear port 9
2.2.1 Description 9
2.2.2 Connection 9
2.2.3 Convertors 9
3. CASE DIMENSIONS 10
SCHEMES
FIGURE 1 : 3VTs CONNECTION 3
FIGURE 2 : 3VTs + RESIDUAL VT CONNECTION 4
FIGURE 3 : 3VTs (PHASE-PHASE) + RESIDUAL VT CONNECTION 5
FIGURE 4 : 2VTs + RESIDUAL VT CONNECTION 6
FIGURE 5 : LV CONNECTION FOR P92x (220-480V RANGE) 7
FIGURE 6 : PC<->RELAY SIGNAL CONNECTION 8
FIGURE 7 : RS485 CONNECTION 9
FIGURE 8 : MiCOM P921 AND P922 RELAYS CASE DIMENSIONS 10