NXAirS Withdrawable Metal-enclosed Switchgear, Rated Voltage Up to 12kV
9
NXAirS description
7.3 Busbar compartment
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Construction of rated current
≤
2500A or
>
2500A
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Busbars made of bare flat copper, bolted from panel to panel
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Pressure release upwards
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Insulated busbars
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Separated comparment
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Post insulator with capacitive division
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Natural ventilation
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Pressure switch
7.4 Cable connection compartment
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Construction of rated normal current 630A~4000A
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Panel bars made of bare copper
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Pressure release upwards through a separate duct
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Single-core XLPE up to max.4×500mm
2
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Busbars: with insulating bushing ( optional )
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Block-type CT: Max. 3, (1 CT with 1or 2 coils) made of epoxy resin.
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PT can be installed optionally, max.3
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Arresters or over-voltage protection device
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HV HRC fuses in metering module
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Make-proof earthing switch
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Cable-type CT at the bottom of the connection compartment
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Natural ventilation (current above 2500A)
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Heating device
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Motor-driven earthing switch
7.5 Low-voltage compartment
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Completely separated from the other compartments, and removable
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For installation of protection, control, measuring and metering equipment
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Plug is adapted to connection of conductor and control cable
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705 mm is the standard height
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Open the door from left
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partition between low-voltage compartment and high-voltage compartment
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Illumination
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Heating device
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The optional height is 980mm
7.6 Additional compartment to the busbar compartment (optional)
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An independent partitioned additional compartment, bolted to the busbar compartment
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Isolation partition between additional compartment and busbar compartment, install PT with single pole, max. 3.
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Separate pressure release for the additional compartment
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Busbar upward connection
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