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SLENDAUR High Voltage Starters
3.3kV and 6.6kV Fuse Protected Vacuum Contactor Unit
The SLENDAUR range of fuse protected vacuum contactor units is of the single tier withdrawable pattern, suitable for connection to breakers or isolators for the complete switchboard format. The fixed housing incorporates phase segregated busbars, fast make earth switch and individual HV and LV Outgoing cable chambers.The truck withdraws on nylon wheels and incorporates fully segregated LV and HV components, to allow safe and unrestricted access for testing and maintenance purposes. A comprehensive system of mechanical interlocks in provided between truck, isolator, contactor, earth switch and LV compartment door.
Safety Shutters
Automatic padlockable shutters cover the busbars when the truck is withdrawn.The shutters can be manually latched open, but are automatically reset by truck insertion. Automatic padlockable outgoing circuit shutters are available as an option where backfeeds may cause the circuit terminals to remain energised when the truck is withdrawn
Safety Interlocking
A comprehensive system of mechanical interlocks is provided between truck, isolator, contactor, earth switch and LV compartment door.
Testing
A test switch is located in the LV compartment and is mechanically interlocked with the padlockable compartment access door and main isolator to ensure safe testing is possible without energising the main outgoing circuit. For full access, testing can be carried out with the truck withdrawn and a test lead is provided to reconnect the appropriate auxiliary circuits at the truck/housing plug and socket interface. The test supply can either be connected from an external source to each unit or buswired along the switchboard.
Earth Switch
The fast make earth switch automatically closes when the truck is being withdrawn.The switch is provided with padlocking facilities as standard but with the option of a mechanical coded key lock. As an option, the earth switch can be provided with manual closing only, by opening the isolator and gaining access to an additional closing handle fitted inside the LV compartment. Alternatively manual closing can be achieved from within the housing with the truck withdrawn. The earth switch is mechanically driven open when the isolator is closed. A front of panel flag gives indication of the earth switch status.
Busbars
The phase segregated busbars are housed in chambers
at the top of the housing, supported at panel intervals
by moulded insulators which form barriers between
adjacent panels.
Main Features
- Arc Fault Containment to IEC298 Appendix AA (optional)
- Type C Co-ordination to IEC632-1 Appendix B
- Busbar Fault Capability to IEC694
- EMC & RFI to CISPR & EN55011
- Fully Withdrawable
- Reversing, Star Delta, Auto Transformer, Stator & Rotor Starting
- Phase to Phase and HV to LV Segregation
- Non Insulated or Insulated Busbar Systems
| Rated Voltage | 3.3kV or 6.6kV |
| Busbar Thermal Rating | 800,1250, 200 or 4000 A rms |
| Busbar Short Time Withstand | 50kA for 1 sec for 800A or 50kA for 3 sec for 1250 to 4000A |
| Busbar Peak Withstand | 125kA peek |
| Enclosure Protection | IP4X |
| Power Frequency Rating | (1 min) 20kV rms |
| Rated Circuit Operational Current | 400A rms |
| Contactor ac4 Rating | 400 A rms |
| Breaking Current | 4kA rms |
| Making Current | 4kA rms |
| Motor Max Rating | 1500kW at 3.3kV or 300kW at 6.6kV |
| Transformer Max Rating | 2000kVA at 3.3kV or 4000kVA at 6.6kV |
| Capacitor max Rating | 2000kVAr at 3.3kV or 4000kVAr at 6.6kV |
| Impulse Rating | 40/60kV peek |
| Slendaur High Voltage Fused Backed Vacuum Contactor Switchgear (Portable Document Format) LS_Slendaur.pdf [516Kb] [download now] | |
