Citadel 2.0 - Instruction Manual - page:
47
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21
Dual Trip coils
The Trip coils electrically open the circuit breaker from a signal provided by protective relays or
other control devices.
When more than one trip coil is desired a second trip coil can be provided and is generally
connected to a separate control power source than the main trip coil.
Capacitor trip device (optional)
Capacitor trip devices can be thought of as short term batteries providing an adequate
electrical energy storage to ensure circuit breaker tripping if control power is lost.
The capacitor trip devices are installed in the drawout circuit breaker switchgear enclosure.
These devices provide an independent control power tripping source for installations lacking
station batteries.
The capacitor trip takes available 120 or 240 Vac to charge a large capacitor.
The capacitor trip device will provide short-term tripping energy for circuit breaker.
FIGURE 21
C I T A D E L C O N T R O L S
