ᆅჾ
ۉጱྃ੩ഗ
ॲ
֪
য়ߢ
༵๖
ణ
INTRO
TRIP UNIT
LOCKS
ACCESSORIES
TESTS
APPENDIX
1.4-03
ᆅჾ
ࡀ߭
Ҿጎ
֡ፕ
ۉጱྃ੩ഗ
ୟഗ
BREAKER
NF1:ဣଚگუഘୟഗ
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.!വۉუྃ੩ഗཚۉDŽසҾጎDžă
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ۯยԢă
.!؏ॐᄩդ࿄֭ă
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සࡕփీፁฉຎཉॲዐLjยԢॽփీԿࢇ
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থڟ܀૬ڦۉᇸă
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ፕഔۯ้ጲۯئీă
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
Ʃ
e racking handle is not inserted.
- The Trip Unit reset bu
Ʃ
on is not protruding from the front
cover.
- The circuit breaker is not posi
Ɵ
oned anywhere between
CONNECTED, TEST and DISCONNECTED.
If any of the above condi
Ɵ
ons are NOT met the
device is prevented from closing.
2. Closing the Device
Up to four di
ī
erent ways (A-D) of closing the breaker are
available:
-- A. Manual Closing
Depressing the 'ON' pushbu
Ʃ
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
Ʃ
on located on the
breaker front facia. This coil needs a power supply and can
also be accessed through the Trip Unit communica
Ɵ
on bus.
-- D. Closing through Communica
Ɵ
on bus
When an electrical charging deviceand Command Closing Coil
are present the breaker can be switched on through the
communica
Ɵ
on bus o
ī
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
Ɵ
cally charged as soon as the closing
opera
Ɵ
on is ini
Ɵ
alized.
2/5/4!ୟഗԿࢇ֡ፕ
