BECKWITH ELECTRIC M-3520, Instruction Book

Page: 13 / 217

–12–
M-3520 Intertie Protection Relay
2
3
456
7
89
10
27
26
30
29
28
31
32
33
34
1
2
3
4
5
6
7
8
46
47
48
49
50
51
52
53
+-
G I
C I
B I
A I
G
C V
B
V
A V
61
90
11
8
th
A
V
E
N
O
.
WA
R
N
IN
G
!
C
O
NT
A
C
T
W
IT
H
T
E
R
M
INA
LS
M
A
Y
C
A
U
S
E
E
LE
C
T
R
IC
A
L
S
H
O
C
K
V
V
V
F1
F2
F3
F4
PS
2
PS
1
R
A
T
E
D
C
U
RRE
N
T
S
E
LF-
T
E
S
T
P/
S
4
3
2
1
6
5
IN
PU
T
S
ALAR
M
S
(5
2
b
)
C
O
N
TA
C
T
R
A
TI
N
G
S
S
E
E
IN
S
TR
U
C
TI
O
N
M
A
N
U
A
L
CO
M
2
B
E
C
K
W
ITH
E
LE
C
TR
IC
C
O
.
IN
C
.
RT
N
RS
2
3
2
IRI
G
-B
+-
PS
2
PS
1
3A
M
P
,2
5
0
V
(3A
B
)
5A
,N
O
M
1A
,N
O
M
LA
R
G
O
,
F
L
3
3
773
72
7-
5
44-
2
32
6
RX
4W
R
S
485
CO
M
3
TX 2W
VV
2
LR
8
94
64
NR
T
L/
C
LIS
T
E
D
IN
D
.C
O
N
T
.E
Q
54
IN
IN
IN
IN
IN
IN
-
+
-
+
12
13
14
15
16
17
18
19
20
23
22
21
25
24
IN
BC
AB
R
A
T
E
D
V
OLT
A
G
E
(N
OMI
N
A
L
)
60
-1
4
0
V
A
C
,50
/60
H
z
36
43
CA
35
63
59
R
83F
4
R
11
18
-56V
D
C
85
-2
6
0
V
D
C
/V
A
C
18
-56V
D
C
85
-2
6
0
V
D
C
/V
A
C
45
39
38
37
40
41
42
44
55
56
57
58
60
61
62
OUTPUTS
1
Figure 1
External Connections
■■■■■
NOTES
:
1
.
Output contacts #1 through #4 contain special circuitry for high-speed operation, and close 4 ms faster than outputs #5 throu
gh #8. Outputs #1
through #6 are form "a" contacts (normally open), and Outputs #7 and #8 are form "c" contacts (center tapped "a" and "b" contac
ts).
2
.
To comply with UL and CSA listing requirements, terminal block connections must be made with #12 AWG solid or stranded copper
wire inserted in
an AMP #324915 (or equivalent) connector. Wire insulation must be rated at 60°C minimum. Terminal block connections 1 through 3
4 must be
tightened to 12 inch-pounds torque. Terminal block connections 35 through 63 must be tightened to 8 inch-pounds torque.
3
.
ONLY
dry contacts must be connected to inputs (terminals 5 through 10 with 11 common) because these contact inputs are intern
ally wetted.
Application of external voltage on these inputs may result in damage to the unit.
4
.
All relays are shown in the de-energized state, and without power applied to the relay.
5
.
The power supply relay (P/S) is energized when the power supply is functioning properly.
6
.
The self-test relay is energized when the relay has performed all self-tests successfully.