Circuit Breaker Closing Opera On - AEG ME09 Installation, Operation And Maintenance Manual

1.4-03
INTRO BREAKER
TRIP UNIT
LOCKS ACCESSORIES
1.4.3 CIRCUIT BREAKER CLOSING OPERATION
1. The circuit breaker can be closed, if:
- The Trip Unit is installed.
- No pending ON command is present
- The network interlock if installed is reset.
- If installed, the Undervoltage release (s) are energized.
- No local keylocks or in- or external breaker interlocks are set
to PREVENT the user from switching ON.
- The casse e racking handle is not inserted.
- The Trip Unit reset bu on is not protruding from the front
cover.
- The circuit breaker is not posi oned anywhere between
CONNECTED, TEST and DISCONNECTED.
If any of the above condi ons are NOT met the
device is prevented from closing.
2. Closing the Device
Up to four di erent ways (A-D) of closing the breaker are
available:
-- A. Manual Closing
Depressing the 'ON' pushbu on located on the breaker front
facia. (Fig.1.0D page 1-4)
-- B. Remote Electrical Closing
When an electrical charging device is used a standard Closing
Coil can be used to switch the breaker 'ON'. This coil must be
energized via the secondary terminals.
-- C. Local Electrical Closing
When an electrical charging device is used a Command
Closing Coil can be used to switch the breaker 'ON'.
The device is operated by a extra pushbu on located on the
breaker front facia. This coil needs a power supply and can
also be accessed through the Trip Unit communica on bus.
-- D. Closing through Communica on bus
When an electrical charging deviceand Command Closing Coil
are present the breaker can be switched on through the
communica on bus o ered on several GT Trip Unit versions.
The coil must be connected to an independent power supply.
NOTICE: If a motorized Spring Charging Unit is installed, the
springs will be automa cally charged as soon as the closing
opera on is ini alized.
TESTS APPENDIX