NXAirS Withdrawable Metal-enclosed Switchgear, Rated Voltage Up to 12kV
5
NXAirS description
NXAirS description
5. Features
NXAirS Switch panel has the following features
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Factory-assemble, type-test, indoor installation, according to GB3906, IEC62271-200/VDE0671-200 standards.
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Degree of continuity: LSC 2B
Feature of person Safety
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All switching operations can only be performed with front door closed
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Degree of protection: IP4X, according to part 1 of GB4208, IEC60529 and VDE0470
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Passed the test of internal arcs, according to GB3906\IEC62271-200
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Degree of PM(Metal)
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Reliable interlocks protect against accidental contact with live parts
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Mechanical status indication of circuit-breaker can be recognized through the inspection window, the status of the earthing switch
indicated on the front door.
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Logical control Interlocks prevent wrong operation
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Option: Voltage detector. The status in the switchgear panel can be recognized by voltage detection.
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Earthing status of the feeders can be recognized by auxiliary switch.
Feature of Operation
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Operations of switch are from the front of the panel
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The operation handle holes and control units are clearly allocated beside the mechanical indicators
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There are mechanical indicators of switch on mimic diagram
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Manual/Motor-driven cassettee and earthing switch
Flexibility
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Panel can be wall mounted or not.
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Cable connection can be done from both front and rear of the panel
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Middle place, withdrawable panel
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Connection of all normally used types of cables
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Extension of existing switchgear at both ends without modification of panels
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Easy to install or remove of bushing-type current transformer from front of the panel
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Several optional secondary capacity of current transformer
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Withdrawable parts with same code can interchange completely
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Easy replacement of compartment by modular bolted construction
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Busbar voltage sensors are installed in a separate additional compartment with pressure-resident partition to the busbar compartment
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Every compartment has pressure relief channel
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Pressure relief upwards for each compartment
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Pressure-resistant floor cover
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Control cables are placed in metallic cable ducts
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With cable testing device, the cable can be tested through the open partition of the switching compartment without switch off the
busbar
Figure 1.
Front view of the switchgear
