WEG ABW Series, Инструкция по эксплуатации

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ABW - Air Circuit Breaker | 31
3.2 ELECTRICAL OPERATION
The operation of the circuit breaker by electrical control is executed by means of the motorized drive and by the
closing and opening coils, accessories installed internally in the circuit breaker.
The motorized drive loads the springs of the operation mechanism automatically, whenever the circuit breaker
is turned off, an operation which ends after approximately 5s. The power supply of the motor is executed by the
terminals U1 and U2. In order to turn on the circuit breaker, when its springs are loaded, a voltage pulse is applied
to the terminals of the closing coil (A1 and A2). In order to turn off the circuit breaker, a voltage pulse is applied
to the terminals of the opening coil (C1 and C2). In circuit breakers equipped with a subvoltage coil, the circuit
breaker can be turned off cutting the power supply of this coil (D1 and D2).
3.3 EXTRACTION/INSERTION PROCEDURES
3.3.1 Insertion
1. Pull the rails of
both the sides,
as far out as
possible.
Lock of the
rails.
2. Position the circuit
breaker on the rails,
paying attention to the
perfect fitting.
3. Slowly push the
circuit breaker inside the
extraction car.
4. Maintaining the OFF button
pressed, insert the extraction rod
in the hole located in the lower
part of the circuit breaker.
Figure 3.4: Insertion
CAUTION!
The extraction rod can only be inserted with the “OFF” button pressed.
The position lock comes out whenever the operation is concluded.
Then go on to the next step.