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GN22-12/C Indoor High Voltage Isolator Switch 12kV 630A-1250A Disconnect Switch for Power Distribution

With multiple mounting options and compatibility with various switchgear types, the GN22-12 is the ideal solution for both new installations and retrofitting projects, guaranteeing operational safety and a long service life.

 

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The GN22-12/C Series Indoor High Voltage Isolating Switch is a cutting-edge electrical component designed for power systems with a rated voltage of 12kV and AC 50/60Hz. It is primarily used to open and close circuits under no-load conditions, providing a visible safety gap for maintenance of busbars, circuit breakers, and other electrical equipment.

The GN22-12/C Series Indoor High Voltage Isolating Switch is a cutting-edge electrical component designed for power systems with a rated voltage of 12kV and AC 50/60Hz. It is primarily used to open and close circuits under no-load conditions, providing a visible safety gap for maintenance of busbars, circuit breakers, and other electrical equipment.

Key Features

  • Advanced Rotary Structure: Features a unique rotary contact design for enhanced breaking capacity and stability.

  • Superior Insulation: Utilizes high-strength epoxy resin insulators to ensure reliable performance in harsh indoor environments.

  • High Current Capacity: Available in rated currents of 630A, 1000A, and 1250A to suit various industrial needs.

  • Safety Interlock: Compatible with various operating mechanisms (Manual or Motorized) with integrated interlocking to prevent misoperation.

  • Compact Design: Space-saving footprint, ideal for installation in various types of high-voltage switchgear.

Technical Specifications

ParameterValue
Rated Voltage12kV
Rated Current400A / 630A / 1250A
Rated Frequency50Hz
Rated Short-time Withstand Current20kA / 25kA (4s)
Rated Peak Withstand Current50kA / 63kA
Power Frequency Withstand42kV / 48kV (1 min)
Lightning Impulse Withstand75kV / 85kV
Mechanical Endurance≥ 2,000 Operations (M2 class)
Operating MechanismManual, Rotary Type

The GN22-12/C Series Indoor High Voltage Isolating Switch is a cutting-edge electrical component designed for power systems with a rated voltage of 12kV and AC 50/60Hz. It is primarily used to open and close circuits under no-load conditions, providing a visible safety gap for maintenance of busbars, circuit breakers, and other electrical equipment.

 

Technical Documents & Certifications

  • GB1985-2004 / IEC 62271-102
  • ISO9001:2015 Quality Management
  • Type test reports from an authorized Chinese national lab

💡 Expert Insight: The rated short-time withstand current (Ith) and rated peak withstand current (Ipk) are critical for safety. Our GN22-12’s high ratings ensure it can safely withstand the extreme mechanical and thermal stresses of a downstream short-circuit fault without deformation, protecting the entire switchgear system.


Application Scenarios

  • Urban Substations: Requiring compact switchgear isolation.
  • Power Generation Plants: For 12kV indoor switchgear panels.
  • Industrial Facilities: With frequent maintenance operations.
  • Retrofitting Projects: Replacing outdated or oil-insulated isolators.