Micom P721, Technical Manual

Page: 302 / 334

P72x/EN
CO/A11
Con
n
ec
tio
n
D
iag
ra
m
s
Page 2
/2
MiCOM
P7
21/P723
29
RS 485
Nota :
(1)
(c)
(a)
(b)
30
32
*
31
-
+
34
P723
MiCOM
33
+
-
Terre boîtier
(d)
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
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
Alternative : Restricted Earth Fault Protection ( Star connection)
Auxiliary
voltage
Three-Phase High Impedance Differential
Case earth
Module terminal blocks
viewed fromp rear
(with integral case earth link)
Case earth connection
Port communication
( : Link terminals 30 and 32 if
the relay is connected at the
end of the RS485 bus )
CT shorting links make before (b) and (c) disconnect
Short terminals break before (c)
Long terminals
Pins terminals (pcb type)
(2) CT connection are typical only
(3) Earth terminals are typical only
(4) The MICOM relays are shown with supply off.
*
Alternative : Restricted Earth Fault Protection (Delta connection)
L3
23
27
25
{
{
{
{
{
{
21
19
L5
L4
26
17
28
24
22
L2
L1
+
-+
-+
-+
-+
-
Programmableinput
Programmable
input
Programmable
input
input Programmable
Programmableinput
RL7
RL8
13
15
11
{
{
{
{
{
{
{
{
RL6
RL5
RL4
RL2
RL3
RL1
5
9
7
1
3
20
18
10
8
16
14
12
2
4
6
WD
36
35
37
Watch Dog (4)
Programmable tripping
output
Programmable output
Programmable output
Programmable output
Programmable output
Programmable output
Programmable output
C
B
A
Phase rotation
P793
P791 and P793 stabilising resistors
(-V)
Auxiliary voltage
Ctrl shorting relay
Auxiliary voltage
(+V)
C
A
B
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
P791
(-V)
Auxiliary voltage
Ctrl shorting relay
C
A
B
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
P791
(-V)
Auxiliary voltage
Ctrl shorting relay
R St.
CT1 CT2 CTn
R St.
R St.
R St.
R St.
P3954ENa
SCHEME REPRESEN
TING
MiC
O
M R
E
LAY
O
FF