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2019-05-24 / V1.0
Maintenance
Contactors C137/C163/C164/C165 – Installation and Maintenance Instructions
Check the main contacts for wear and tear
SPST-NO contactor types C 137 C, C163 C, C164 C
and C165 C
X
Check the main contacts for damage, wear and
tear, as well as traces of burn-off (slightly sooting
is acceptable).
In doing so check both,
-
the fixed contacts (4)
-
and the contacts (5) at the lower side of the
moving bridge.
X
If the loss of contact material is more than 70%,
replace the entire contactor.
-
Minimum coating: 0.3 mm contact material
-
In new condition: 1.2 mm contact material
X
If the main contacts are not damaged and not
heavily worn, then re-install the arc chamber cover.
5
4
5
4
Fig. 36: Check the main contacts for wear and tear
(the figure shows C137 C, the procedure for C163 C,
C164 C and C165 C is the same)
Changeover (SPDT) contactor types C 137 H, C163 H,
C164 H and C165 H
X
Check the main contacts for damage, wear and
tear, as well as traces of burn-off (slightly sooting
is acceptable).
In doing so check both,
-
the fixed contacts (4)
-
and the contacts (5) at the lower side of the
moving bridge.
X
If the loss of contact material is more than 70%,
replace the entire contactor.
-
Minimum coating: 0.3 mm contact material
-
In new condition: 1.2 mm contact material
X
For changeover (SPDT) contactors in addition
check the normally closed contacts.
In doing so check both,
-
the contacts (6) on the movable lever
-
and the fixed contacts (7) at the inside of the arc
chamber cover.
X
If the main contacts and the normally closed con-
tacts are not damaged and not heavily worn, then
re-install the arc chamber cover.
5
4
5
4
6
6
7
Fig. 37: Check the main contacts for wear and tear
(the figure shows C137 H, the procedure for C163 H,
C164 H and C165 H is the same)