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GW9-15GX Isolating Switch
Product Overview
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
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
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
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
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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