Mounting The Auxiliary Switch; Auxiliary Switch For Switch-Disconnector; Connection Of The Auxiliary Circuits - ABB NAL Series Installation And Operating Instructions Manual

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16.0 Mounting the auxiliary switch

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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.

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.
General characteristics
Insulation voltage to
standard VDE 0110, Group C
Rated voltage
Test voltage
Maximum rated current
Breaking capacity
Number of contacts
Groups of contacts
Contact travel
Actuating force
Resistance
Storage temperature
Operating temperature
(-30° ref. ANSI 37.09)
Contact overtemperature
Mechanical life
Protection class
Cable section
Auxiliary contacts conform to the following
standards/regulations/directives: EN 60947
(DC-21A DC-22A DC 23A AC-21A) RoHS Directive
35
660 V AC
800 V DC
24V ... 660 V
2 kV for 1 min
10 A - 50/60 Hz
Class 1
(IEC 62271-1)
5
10 / 16 / 20
90 °
0.66 Nm
<6.5 mΩ
–30 °C ... +120 °C
–20 °C ... +70 °C
10 K
30,000 mechanical
operations
IP20
1 mm 2