Cubicle
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LBD Disconnecting Cubicle
In DC Traction Substations one disconnector or load Break switch is normally installed downstream each High Speed Circuit Breaker thus allowing, in case of failure, to isolate the circuit breaker granting the safety of the system.
Moreover the layout is completed by a by-pass or parallel disconnector or Load Break switch connecting two feeders and allowing to grant the service continuity in case of failure of one circuit breaker thus increasing the safety of the full system and introducing a further isolating step.
This disconnector is normally motorized for remote control (opening and closing).
To comply with these requirements COET developed a modular line of Disconnecting panels which offers a very versatile and cost efficient solution for different requirements.Main features of our solution are:- Segregated compartment for each Disconnector and/or Load Break Switch
- and for each cable entry/exit.
- Withdrawable execution on request.
- Segregated Low voltage compartment including protective relay and PLC for SCADA connection in cable or fiber optic.
- Motor or manual operated Switches with manual emergency operation.
- Main contact position visibility.
- Voltage presence relays and surge arrestors
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Feeder Cubicle
In particular the new design, although very compact (500mm width for 750V and 1,5kV and 800mm for 3kV) offers:
- 4 compartments, segregated in metal clad version,
- For: Low Voltage equipments, HSCB, Ominibus barand cables exit.
- HSCB and Test Equipments placed on withdrawable truck (optionally motor driven) for easy maintenance with 3 positions (Service, disconnected/Test and removed).
- Multifunction Protective relay and PLC.
- Earthing switch.
- Interlocking system customisable on request.
- Optional by-pass bus bar compartment with Disconnector
Both Metal clad and Metal-enclosed executions are available.
RECTIFIER CUBICLES
Main characteristics are:
• Connection: 6/12 pulses Bridge, series or parallel,with or without Inter Phase Reactance.• Semiconductor type: Diode.• Cooling system: AN, AF.• Diode redundancy: N-1 or N-2.• Control Panel.• Fuse Protection.• Press Pack Diodes assembling.• Execution: fixed or withdrawable.
