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GW9-15GX Isolating Switch

The GW9-15GX is a 12kV/36kV manual outdoor isolating switch offering 400A or 630A ratings, extended creepage performance, and secure self-locking operation for harsh environment applications.

    Product Overview

    The GW9-15GX is a compact outdoor isolating switch for overhead lines up to 38kV. Its 31mm/kV creepage distance suits heavily polluted or wet environments, while 400A/630A ratings and 20kA short-circuit withstand ensure robust performance. A 160-degree blade opening, self-locking mechanism, silver-plated copper contacts, and galvanized steel construction deliver safe, low-maintenance isolation for utility applications.

    Product Features

    ◆ Dual voltage ratings: 12kV and 36kV configurations available
    ◆ Current options of 400A and 630A to match varied feeder loads
    ◆ Wide 160-degree blade opening for unambiguous visual circuit break
    ◆ Silver-plated copper blades and brass/copper terminal pads for low-resistance conduction
    ◆ Insulator flexibility: select porcelain for traditional ruggedness or polymer for lightweight, hydrophobic performance
    ◆ Fully hot-dip galvanized structural steel components including channel base and operating eye

    Product Advantages

    ● Outstanding Pollution Performance: The 31mm/kV creepage distance exceeds standard requirements, delivering reliable insulation behavior in coastal, industrial, and high-humidity environments where surface contamination is a concern.
    ● Uncompromised Safety: A 160-degree blade opening combined with a self-locking mechanism eliminates ambiguity in switch status, reducing operational risk for line crews.
    ● Fault-Ready Construction: With 20kA short-circuit withstand and 50kA peak withstand, the switch remains mechanically and electrically intact under severe network fault conditions.
    ● Tailored Material Selection: Users can specify insulator type based on site conditions — polymer for reduced weight and self-cleaning hydrophobic action, or porcelain for proven long-term rigidity.
    ● Corrosion Defense: Galvanized steel components protect against rust and atmospheric degradation, extending the functional service life of structural parts without additional field coatings.

    Applications

    ◆ Contamination-prone overhead distribution feeders in coastal or industrial zones
    ◆ Substation outgoing line disconnect where extended creepage is specified
    ◆ Medium-voltage overhead tie-switch locations requiring visible isolation
    ◆ Mining and heavy industry power supply isolation in harsh environmental conditions
    ◆ Rural distribution networks requiring low-maintenance, high-reliability isolation hardware
    ◆ Integration into loadbuster-equipped overhead systems for live-line operational flexibility

    Technical parameter

    Electrical characteristics Specification Unit
    Rated voltage of Disconnector 12 36 kV
    Rated current 200 / 400 / 630 A
    Rated frequency 50 Hz
    Lighting Impulse withstand voltage 95 170 kV
    Power frequency withstand voltage in 1 min (Dry) 42 70 kV
    Power frequency withstand voltage in 10 s (Wet) 36 60 kV
    Rated short circuit withstand current 20 kA
    Rated short circuit withstand time 3 s
    Rated peak withstand current 50 kA
    Creepage 31 mm/kV
    Blade stopped degree in opening position 160 Degree

    Spare parts
    Mounting bracket with/without
    Terminal clamp with/without
    Loadbuster Hook with/without
    Self locking Mechanism with

    Material
    Terminal pads Brass/Copper plated by silver
    Blade Copper plated by silver
    Insulator Porcelain/Polymer
    Channel Base Steel hot galvanized
    Operating eye Steel hot galvanized

    Service conditions
    Environment maximum temperature 40 ℃
    Pollution level Heavy
    Altitude ≤1000 Meter

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