ABB CIRCUIT SHIELD 49 Manuale di istruzioni - Pagina 7
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Motor Overcurrent Relay
IMPORT ANT:
OBSERVE CT POLARITY
a
i
52
b
I
c
l
DC Reliable Bus (
+)
a
I
b
f
11
r~.,~
c
1
f
f
12
52
1:-
3 5
a
2~~
3
4
6
(-)
4
Wdh
Circuit Breaker
Wdh Motor
Starter
Figure I:
Figure 2:
Typical External Connections
1604148
Motor Overload Relay
a
Typea 49, 49/50, 49/50151
Or11wout Test Case
..
Reset 1npu1 For Tesr Use Only.
Exlernal Resistor Supplied With Relay.
Internal Connections
IT
8.38
r-
.J.:.1!
I
.!:!!
I
2i3 '·"
~
t7~
30.
li7
PAH[L
-tf-
r- ___
.Q_ _ _ _
I
T
I
I
I
4.18
I
I
' ] f--+---+-----
£
- - - - + r l -
L -
-cr---_J
5
6
'RONT Vl[W
$10( Vl[W
NOT£ 1 OINCNSIONS All!
~
Figure 3:
Relay Outline and Panel Drilling
m
7.2.1.7-4
Page7
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