19
2021-02-10 / V1.0
Contactors C195 Series – Installation and Maintenance Instructions
Installation
X
To secure the mounting screws so that they do not
come loose, appropriate screw locking elements
must be provided. Schaltbau recommends using
Schnorr washers (or similar).
X
The mounting screws must be tightened to the
specified torque, which depends on the strength
class (min. 8.8) of the screws/nuts used.
7.1.3 Mounting positions
The contactors can be mounted in almost any position
on the prepared mounting plate or on the mounting
frame.
Examples of intended installation positions are shown
in
Fig. 12
.
Installation positions hanging, with mounting plate/
frame on top, as shown in
Fig. 13
, are not permissible.
360°
±90°
±90°
C195 X/
C195 A/
C195 A/ ...BD
C195 B/
C195 S/
C195 S/ ...BD
C195 T/
C195 W/
Fig. 12: Examples of intended mounting positions
±90°
±90°
C195 X/
C195 A/
C195 A/ ...BD
C195 B/
C195 S/
C195 S/ ...BD
C195 T/
C195 W/
Fig. 13: Examples of non-permissible mounting positions
7.1.4 Required minimum clearances
ATTENTION
Switching of high voltage currents produces electric
arcs and it is possible that plasma will escape from
the openings of the arc chambers.
Therefore, it is extremely important to maintain the
minimum clearances to ground/earth and the bus-
bars to avoid flashovers.
X
The required minimum clearances to all sides and
above the contactor can be found in our
B195 cat-
alogue
. The
catalogue
is available under:
https://www.schaltbau.com/en/media-library/
7.1.5 Ventilation requirements
X
Ensure sufficient ventilation in the installation area,
especially when switching heavy loads. This allows
the plasma to be dissipated more quickly and re-
duces the risk of flashover and corrosion.
7.1.6 Safety
X
Installation must be performed by qualified
trained personnel.
ATTENTION
When installing, ensure that no dirt can get into the
contactor as a result of surrounding building activi-
ties.
ATTENTION
Detent-edged rings and detent-edged washers have
a limited life time. After screws secured with detent-
edged rings or detent-edged washers have been
undone three times, the rings or washers must be
replaced by new ones.
X
Record the frequency of undoing of the screws
in the work log.
X
Replace detent-edged rings or detent-edged
washers with new ones after the screws have
been undone three times.
7.1.7 Tools required
-
Socket spanner set, hexagon nuts, set of hexagon
socket spanners
-
Torque spanner
