35
16.1 Auxiliary switch for switch-disconnector.
Electrical signalling of switch-disconnector
open/closed can be obtained with a group of
2NO+2NC, 4NO+4NC, 8NO+8NC auxiliary
contacts.
Connection of the auxiliary circuits.
The auxiliary switch is mounted to the frame on
the opening side of the switch disconnector and
connected to the crank on the hollow shaft by
steel arm - bent end of the arm must be mounted
on the hollow shaft side (see Fig.54).
Electric scheme of auxiliary switch is shown in
Fig. 58. In cases where a of shunt trip coil is
installed, it should be connected to the auxiliary
switch as shown on Fig.59. Tighten mounting
screws with 25 [Nm] torque.
Auxiliary contacts conform to the following
standards/regulations/directives: EN 60947
(DC-21A DC-22A DC 23A AC-21A) RoHS Directive
—
16.0 Mounting the auxiliary switch
General characteristics
Insulation voltage to
standard VDE 0110, Group C
660 V AC
800 V DC
Rated voltage 24V ... 660 V
Test voltage 2 kV for 1 min
Maximum rated current 10 A - 50/60 Hz
Breaking capacity Class 1
(IEC 62271-1)
Number of contacts 5
Groups of contacts 10 / 16 / 20
Contact travel 90 °
Actuating force 0.66 Nm
Resistance
<6.5 mΩ
Storage temperature –30 °C ... +120 °C
Operating temperature –20 °C ... +70 °C
(-30° ref. ANSI 37.09)
Contact overtemperature 10 K
Mechanical life 30,000 mechanical
operations
Protection class IP20
Cable section 1 mm
2
_
Note:
The minimum cross-section of the
wires used for the auxiliary circuits must
not be less than the one used for the ex-
ternal cabling. Furthermore, they must be
insulated for 3 kV of test.
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