Connection Diagrams
P12x/EN CO/A96
MiCOM P120/P121/P122/P123
Page 1/4
Auxiliar
y
voltage
Programmable
input
Phase rotation
C
B
29
RS 485
Communication
cable shield
Por
t communication
CT shor
ting links make before (b) and (c) disconnect
(3) Ear
th ter
m
inals are typical only
(2) CT connection are typical only
Nota :
(1)
(c)
(a)
(b)
Shor
t ter
m
inals break before (c)
Long ter
m
inals
last relay to be connected
( : ter
m
inating resistor for the
*
30
32
*
31
_
+
Case ear
th connection
Programmable output
Programmable tripping
output
34
P120/121
MiCOM
26
{ {
}
}
}
}
}
}
28
24
22
L2
L1
RL4
RL2
RL3
RL1
20
18
10
8
16
14
12
2
4
33
+
_
6
Module ter
minal blocks
(with integral case ear
th link)
viewed from rear
Case ear
th
Pins ter
m
inals (pcb type)
(d)
Alter
native : The ear
th current input is connected to the sommation of the three phase CT
s.
C
A
B
S1
S2
S2
P2
P1
P2
37
S1
P1
5 A
5 A
5 A
5 A
1 A
1 A
48
47
46
45
44
43
42
41
56
55
54
52 53
1 A
1 A
50
51
49
input
Programmable
Programmable output
Programmable output
The current inputs are connected to 3 phase CT
s + a core balanced CT
.
between 30-32)
+
- +
-
(4) The MICOM P120/P121 relays are shown with supply off.
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
only
C
A
B
P2
S2
S1
P1
5 A
48
5 A
47
46
45
44
5 A
5 A
43
42
41
56
1 A
1 A
55
54
53
52
1 A
51
1 A
50
49
P121
only
P121
P121
P121
A
Alter
native (P121 only): Connection to 2 phases CT
s + a core balanced CT
.
B
C
S2
A
P2
P1
P2
S1
S2
S1
P1
41
5 A
5 A
43
42
1 A
1 A
56
55
54
1 A
1 A
53
52
51
50
49
45
48
5 A
5 A
47
46
44
WD
36
35
W
a
tch dog (4)
P0045ENb
SCHEME REPRESENTING MiCOM RELAY OFF
Summary of Contents for MiCom P120
Page 1: ...MiCOM P120 P121 P122 P123 Overcurrent Relays Version 11 Technical Guide P12X EN T A96...
Page 2: ......
Page 4: ...P12x EN T A96 Technical Guide Contents Page 2 2 MiCOM P120 P121 P122 P123 BLANK PAGE...
Page 13: ...Introduction P12x EN IT A96 MiCOM P120 P121 P122 P123 INTRODUCTION...
Page 14: ......
Page 16: ...P12x EN IT A96 Introduction Page 2 8 MiCOM P120 P121 P122 P123 BLANK PAGE...
Page 22: ...P12x EN IT A96 Introduction Page 8 8 MiCOM P120 P121 P122 P123 BLANK PAGE...
Page 24: ......
Page 35: ...User Guide P12x EN FT A96 MiCOM P120 P121 P122 P123 USER GUIDE...
Page 36: ......
Page 40: ...P12x EN FT A96 User Guide Page 4 72 MiCOM P120 P121 P122 P123 BLANK PAGE...
Page 108: ...P12x EN FT A96 User Guide Page 72 72 MiCOM P120 P121 P122 P123 BLANK PAGE...
Page 109: ...Menu Content Tables P12x EN HI A96 MiCOM P120 P121 P122 P123 MENU CONTENT TABLES...
Page 110: ......
Page 112: ...P12x EN HI A96 Menu Content Tables Page 2 68 MiCOM P120 P121 P122 P123 BLANK PAGE...
Page 180: ......
Page 221: ...Application Guide P12x EN AP A96 MiCOM P120 P121 P122 P123 APPLICATION GUIDE...
Page 222: ......
Page 226: ...P12x EN AP A96 Application Guide Page 4 80 MiCOM P120 P121 P122 P123 BLANK PAGE...
Page 302: ...P12x EN AP A96 Application Guide Page 80 80 MiCOM P120 P121 P122 P123 BLANK PAGE...
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Page 306: ......
Page 368: ......
Page 370: ...P12x EN CT A96 Communications COURIER DATABASE Page 2 248 MiCOM P120 P121 P122 P123 BLANK PAGE...
Page 514: ...P12x EN CT A96 Communications COURIER DATABASE Page 146 248 MiCOM P120 P121 P122 P123...
Page 516: ......
Page 518: ...P12x EN CT A96 Communications IIEC 60870 5 103 Page 2 248 MiCOM P120 P121 P122 P123 BLANK PAGE...
Page 536: ...P12x EN CT A96 Communications IEC 60870 5 103 Page 20 248 MiCOM P120 P121 P122 P123...
Page 538: ......
Page 540: ...P12x EN CT A96 Communications DNP 3 0 Database Page 2 248 MiCOM P120 P121 P122 P123 BLANK PAGE...
Page 554: ......
Page 573: ...Connection Diagrams P12x EN CO A96 MiCOM P120 P121 P122 P123 CONNECTION DIAGRAMS...
Page 574: ......
Page 580: ......
Page 582: ...P12x EN RS A96 Commissioning Test Record Sheets Page 2 60 MiCOM P120 P121 P122 P123 BLANK PAGE...
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