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GW4A-40.5kV Outdoor High Voltage Isolating Switch

GW4A‑40.5 kV Outdoor AC High‑Voltage Disconnector

General Description

This disconnector is of single‑pole type. It can also be assembled into a three‑pole synchronised unit by means of connecting rods. It can be fitted with CS11 or CS8‑6D manual operating mechanisms. CS11 is applied for disconnectors equipped with double‑earthing devices. An electric operating mechanism is optional upon request.

This disconnector features reasonable structure and flexible operation. It can be applied as single‑pole or three‑pole unit for easy installation. The contact blade provides large isolating gap to ensure reliable insulation. According to user requirements, it can be supplied in non‑earthing, single‑earthing or double‑earthing configurations.

    Preview Data Contact us
    Outline and Installation Dimension Drawing
    Dimensional Drawing

    Main Technical Parameters

    Item Unit GW4‑12 GW4‑40.5 GW4‑72.5 GW4‑126 GW4‑126G GW4‑145
    Rated Voltage kV 12 40.5 72.5 126 126 145
    Rated Current A 200
    400
    630
    1000
    250    		 630
    1000
    2000
    2500    		 630
    1250
    2000
    2500    		 630
    1250
    2000
    2500    		 530
    1250    		 530
    1250
    2000
    2500
    Rated Short‑time Withstand Current (r.m.s.) kA 16
    20
    25    		 20
    31.5
    40(46)    		 20
    31.5
    40(46)    		 20
    31.5
    40(46)    		 20
    31.5    		 20
    31.5
    40(46)
    Rated Peak Withstand Current (r.m.s.) kA 40
    50
    63    		 50
    80
    100(104)    		 50
    80
    100(104)    		 50
    80
    100(104)    		 50
    80    		 50
    80
    100(104)
    1min Power‑frequency Withstand Voltage (r.m.s.) To Earth kV 42 80 140 185 185 275
    Break kV 48 90 160 210(265) 210 315
    Lightning Impulse Withstand Voltage (peak) To Earth kV 75 185 325 450(550) 450 650
    Break kV 85 215 375 520(530) 550 750
    Terminal Horizontal Tensile Force N 250 490(735) 735 735 735 980
    Unit Weight Kg 60 80 200 240 240 300
    Remarks ‑ ‑ ‑ ‑ ‑ For altitude 2000m Applicable for 110kV, altitude 4000

    Outline and Installation Dimension Drawing