GEE indoor earthing switches deliver dependable grounding for medium voltage switchgear operating at 12kV, 24kV, and 36kV. Designed to safeguard both equipment and personnel, they provide a secure path to earth for isolated sections, ensuring residual charges are safely discharged during maintenance.

Our product range covers multiple configurations, including variations in sensor integration, phase distances, and insulation cover options. In addition to standard models, we also offer customized designs to match specific project requirements — for example, non-standard pole distances based on customer drawings. Each unit is engineered for durability, safety, and reliable performance in demanding electrical environments.

Selection Guide for Indoor Earthing Switches

When choosing a medium voltage indoor earthing switch, consider the following factors:

For accurate configuration and order processing, please specify:

1. Product model or voltage/current ratings
2. Phase distance
3. Number of auxiliary switch contacts (open/close)
4. Manual or motorized operation (and if motorized, the motor voltage and control module model)
5. Operation direction — left-hand or right-hand control

Typical Operating Environment

GEE indoor earthing switches are suitable for AC 50Hz systems up to 36kV and perform reliably within the following conditions:

• Altitude: ≤1000m
• Ambient Temperature: -10°C to +40°C
• Relative Humidity: Daily ≤95%, Monthly ≤90%
• Earthquake Resistance: ≤8 degrees intensity
• Pollution Level: Class I

Role of an Earthing Switch in Switchgear

In medium voltage indoor switchgear, an earthing switch (or grounding switch) is a safety-critical device designed to connect isolated conductors, such as busbars or feeders, directly to ground potential. By dissipating stored electrical energy, it allows maintenance personnel to work without the risk of accidental energization.

Key characteristics include:

• Interlocking with circuit breakers to prevent operation when grounded
• Placement near disconnectors for effective isolation
• Capability to withstand fault currents
• Option for dual grounding points in certain configurations

Features and Advantages

• Robust & Compact Design – Facilitates installation and optimizes space usage in switchgear.
• Lightweight & Easy Handling – Enables efficient transportation, positioning, and operation.
• High Stability – Excellent dynamic and thermal endurance to withstand short-circuit conditions.
• Fast Operation – Quick make/break action for enhanced operational safety.
• Flexible Control – Available for both left- and right-side actuation.
• High-Quality Materials – Ensures mechanical strength, corrosion resistance, and long service life.

Applications

GEE’s indoor medium voltage earthing switches are widely used in:

• Power Distribution Switchgear for industrial plants and commercial complexes
• Indoor Substations for utilities and renewable energy facilities
• Critical Infrastructure requiring high-reliability grounding solutions

By combining mechanical strength, electrical safety, and operational flexibility, our products help maintain the reliability of medium voltage networks in diverse applications.