LV switchboards
QBT AUXILIARY Low-voltage switchboard for substation auxiliary services
Low-voltage switchboard for the auxiliary services of the substation.
Description
Alongside the main switchboards, CEP designs and builds the auxiliary switchboards serving the substation.
In CEP substations the LV switchboard arrives already installed, wired and tested together with the transformer and the MV switchgear: the substation leaves the plant ready for commissioning.
Rating plate data of the QBT range
Mechanical characteristics
- Enclosures
- metal, in galvanised and painted sheet steel · thermoplastic
- Configurations
- wall-mounted or floor-standing monobloc enclosures · floor-standing modular cabinets
- Non-standard dimensions
- on request
- Accessibility
- front · rear · side
Electrical characteristics
- Rated operational voltage
- 400 · 600 · 690 · 800 · 1000 Vac · up to 1500 Vdc
- Rated insulation voltage
- up to 1000 V, depending on the configuration
- Rated impulse withstand voltage
- 2,5 · 4 · 6 · 12 kV
- Rated frequency
- 50 · 60 Hz
- Rated operational current
- up to 6300 A
- Short-time withstand current Icw (1 s)
- 120 kA
- Peak withstand current Ipk
- 330 kA
- Reference standards
- CEI EN 61439-1 · CEI EN 61439-2 · CEI EN 61439-3
Distribution systems
- Main circuits, standard
- flat or shaped copper bars
- Main circuits, on request
- flat or shaped aluminium bars
- Auxiliary and control circuits
- distribution blocks · certified distribution kits
Values common to the range. The specifications of this product depend on the plant diagram.
Other QBT products
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