8
Hazardous voltages and stored energy.
Will cause death, serious injury or property damage.
Even if the circuit breaker and control circuits have been de-energized for a
long time, the power supply capacitors will maintain significant stored
energy. Always discharge the capacitors before maintenance. Always de-
energize and ground the equipment before maintenance.
Read and understand this instruction manual before using equipment.
Maintenance should be performed only by qualified personnel. The use of
unauthorized parts in the repair of the equipment or tampering by
unqualified personnel will result in dangerous conditions which will cause
death, severe injury or equipment damage. Follow all safety instructions
contained herein.
Automatic capacitor charging
When control power is energized, the
controller board (105.0) executes a self-test
of the capacitors (106.2) and checks the
status of the capacitors (106.2). This self-test
runs automatically and regularly. The result of
the self-test is stored in the memory of the
controller board (105.0).
Capacitor charging check
The capacitor charging system of the circuit
breaker must be checked. Control power is
required for capacitor charging.
Note:
A temporary source of control power
and test leads may be required if the control
power source has not been connected to the
circuit breaker. Refer to the specific wiring
information and rating label for your circuit
breaker to determine the voltage required
and the terminal points where the control
voltage signal should be applied. When
control power is connected to the circuit
breaker, the capacitors should automatically
charge.
Stored energy and high speed moving parts.
Will result in serious injury. Fingers can be crushed by the magnetic
actuator.
Do not remove guard panel. Do not operate circuit breaker if guard panel
removed.
1. Close the control power disconnect device
in the relay and control compartment to
energize the circuit breaker control circuit.
If not previously charged, the capacitors
should charge automatically.
When the capacitors are fully discharged
and control power then is applied, the red
LED lights, and green LED lights after
approximately 30-35 seconds. The red LED
is off when the green LED lights.
If the capacitors have been fully
discharged for a very long time, charging
time may be significantly longer than
indicated. If capacitor charging time is
much longer than expected on initial
energization, refer to “Capacitor charging
after very long de-energization” on page
40 of the “Maintenance” section of this
instruction manual.
