Areva MiCOM P125, Technical Manual

Page: 305 / 362

Connections and Wiring Diagrams P12y/EN CO/C22
MiCOM P125/P126 & P127 Page 5/10
2. P126/P127 REAR DESCRIPTION
Module terminal blocks
(with integral case earth link)
viewed from rear
Case earth
47
55
53
49
51
37
45
43
41
39
35
33
29
31
48
56
54
52
50
38
46
44
42
40
36
34
32
30
24 23
27
25
28
26
2 1
21
19
15
17
13
22
20
16
18
14
7
9
11
5
3
8
12
10
6
4
75
83
81
77
79
65
73
71
69
67
63
61
57
59
76
84
82
80
78
66
74
72
70
68
64
62
60
58
P0072ENa
Input 7 + 57 58 Input 6 + Output 5 1 2 Common
output 1
Case earth
connection
29 30 Terminal
RS485
Input 7 – 59 60 Input 6 – Common
output 5 3 4 Output 1
(NC)
RS485 + 31 32 RS485 –
61 62 Output 6 5 6 Output1
(NO)
Vaux + 33 34 Vaux –
63 64 Common
output 6
7 8 Common
output 2
Relay failed 35 36 Common
"Watchdog"
65 66 Common
output 7
9 10 Output 2
(NC)
Relay
healthy
37 38
67 68 Output 7 11 12 Output 2
(NO)
39 40
Voltage (
•
)
input VA
69 70 Voltage
input VA
Common
output 8 13 14 Output 3
Current (
•
)
input IA (5A)
41 42 Current input
IA (5A)
Voltage (
•
)
input VB
71 72 Voltage
input VB
Output 8 15 16 Common
output 3
Current (
•
)
input IB (5A)
43 44 Current input
IB (5A)
Voltage (
•
)
input VC/Vr
73 74 Voltage
input VC/Vr
Input 3 + 17 18 Output 4
Current (
•
)
input IC(5A)
45 46 Current input
IC(5A)
75 76 Input 3 – 19 20 Common
output 4
Current (
•
)
input Ie (5A)
47 48 Current input
Ie(5A)
77 78 Input 4 + 21 22 Input 1 +
Current (
•
)
input IA (1A)
49 50 Current input
IA (1A)
79 80 Input 4 – 23 24 Input 1 –
Current (
•
)
input IB (1A)
51 52 Current input
IB (1A)
81 82 Input 5 + 25 26 Input 2 +
Current (
•
)
input IC(1A)
53 54 Current input
IC(1A)
83 84
Input 5 –
27 28 Input 2 – Current (
•
)
input Ie (1A)
55 56 Current input
Ie(1A)
NOTE: (
•
) means primary transformer polarity.
VA, VB and VC voltage inputs only stay in P127 relay
Vr (residual voltage) stays in P126 and P127 relays