GW7B Outdoor HV AC Disconnector
GW7B product is a three-column horizontal rotary type outdoor high-voltage disconnector. Available in two structural configurations: direct-drive closing type and rotary contact type. Rated voltage covers 40.5-800kV.
Conductive material & current-carrying performance
Static contact advantages
High-reliability mounting base
Transmission advantages
Features
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01
Conductive material & current-carrying performance
Main conductive arms and static contact seats employ aluminum alloy profiles (high conductivity, high strength) with anodized surface treatment. Combines corrosion resistance, high mechanical strength, and excellent heat dissipation. Supports maximum rated current of 5000A with short-time withstand current up to 63kA.
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02
Static contact advantages
Ensures reliable contact between moving contacts and contact fingers with low operating force. Eliminates impact forces on supporting insulators at both ends. Main contacts feature self-cleaning capability. Contact finger springs made of stainless steel with insulating spacers prevent corrosion and current diversion.
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03
High-reliability mounting base
Integral welded base frame enables flexible adjustment of insulator mounting height. Fully sealed bearing housing prevents lubricant loss/solidification, eliminating oil replenishment maintenance. Internal combined-support bearing design ensures gravity torque and horizontal component force are respectively borne by two specialized bearings.
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04
Transmission advantages
Adopts integral lightweight design for simplified structure and easier operation. Enhances efficiency in usage and maintenance. Rotating components designed per maintenance-free requirements.
Technical Specifications
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Rated voltage（kV）
40.5, 72.5, 145, 170, 252
300, 363, 420, 550, 800 -
Rated frequency（Hz）
50/60
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Rated current（A）
Up to 5000
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Rated short-time withstand current（kA）
Up to 63
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Rated peak withstand current（kA）
Up to 164
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Operating Temperature（℃)
-50 ~ +55
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Ice coating（mm）
Up to 20
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Earthquake strength
Up to 1.0g
Tel : +021-61610502
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