Areva MVAG, Service Manual

Page: 30 / 38

Page 28
Figure 14: Circuit diagram: MVAG 36 overvoltage relay
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
Case ear
th
Module ter
minal block
viewed from rear
R3A
24
23 V
n (A)
16 18
Rear mounted
facing rear
viewed from front
RLA
2
21
22
C1A
D4A
D3A
D2A
D1A
RVD1A
R1A
15
RL1
–X
5 6
16
X
Par
t board
ZJ00
73
R2A
Rear unit
– RLA, RLB, RLC,
Combinations of
Output contacts to
output contacts
module ter
minals
16 18
1M
–
M
–
1B
B
Contact description
M
: Make
B
: Break
Front unit
– RL1
Combinations of
Output contacts to
output contacts
module ter
minals
1 3
5 7
2 4
6 8
9 1
1
5M
–
MM
M
M
M
4M
1B
M
M
B
M
M
3M
2B
B
M
B
M
M
2M
3B
B
M
B
B
M
1M
4B
B
B
B
B
M
–
5B
B
B
B
B
B
R3B
26
25
V
n (B)
16 18
Rear mounted
facing rear
viewed from front
RLB
2
19
20
C1B
D4B
D3B
D2B
D1B
RVD1B
R1B
13
RL1
–Y
3 4
14
X
Par
t board
ZJ00
73
R2B
R3C
28
27 V
n (C)
16 18
Rear mounted
facing rear
viewed from front
RLC
2
17
18
C1C
D4C
D3C
D2C
D1C
RVD1C
R1C
11
RL1
–Z
1 2
12
X
Par
t board
ZJ00
73
R2C
14
13
V
x
RL1
5
8
7
D8
D7
D6
D5
RVD1
10
RLA
–X
9
Front mounted
facing front
viewed from front
21 43 65 87
9 11
X
Y
Z
RLC
–X
RLB
–X
Par
t board
ZJ00
73
Notes: 1.
(a)
CT shor
ting links make
before (b) and (c) disconnect.
(b)
Shor
t ter
minals break before (c).
(c)
Long ter
minals.
2.
When break contacts are used on RLA, RLB, RLC, they are wired in series across ter
minals 16 and 18.
Left hand
Right hand