Manual Air-Insulated Isolator for Outdoor Substation and Overhead Line Sectioning
The GW5-35 outdoor isolator switch is a 35kV class manually operated air-insulated isolator, designed for outdoor substations, overhead distribution networks, and feeder sectionalizing points. It features a double-break rotary blade design, ensuring clear visible isolation and high reliability in medium voltage switching systems.
This model is ideal for use in environments requiring safe maintenance isolation, busbar switching, or load-free manual operations in outdoor MV/HV systems.
Features
Rated Voltage: 35kV
Rated Current: 630A / 1250A / 1600A
Operation Type: Manual (horizontal or vertical rotary)
Structure: Double-break, three-pole, outdoor-mounted
Installation: Concrete pedestal, steel structure, or pole-top
Standard Compliance: IEC 62271-102 / GB 1985-2004
Technical Specifications
| Parameter | Value |
|---|---|
| Rated Voltage | 35kV |
| Rated Current | 630A / 1250A / 1600A |
| Rated Frequency | 50Hz |
| Short-Time Withstand Current | 20kA / 25kA / 31.5kA (4s) |
| Peak Withstand Current | 50kA / 63kA / 80kA |
| Lightning Impulse Voltage | 200kV |
| Power Frequency Withstand | 95kV (1 min) |
| Operating Mechanism | Manual gear drive |
| Mechanical Endurance | ≥2000 operations |
| Installation Altitude | ≤3000m |
Applications
Sectionalizing points on 35kV overhead feeders
Busbar disconnection in outdoor MV substations
Transformer isolation for maintenance procedures
Isolator use in wind/solar access switchyards
Utilities and industrial zone power systems
The GW5-35 is widely used in rural grids, compact open-air substations, and power plant switchyards, where mechanical simplicity and durability are critical.
