Specifications

Liyond Electric's Earthing Switch series is a critical safety component designed for Medium and High Voltage (MV/HV) power systems, including KYN28 switchgear and other medium voltage metal clad switchgear. As one of the leading MV switchgear manufacturers, we provide robust grounding solutions that ensure the safety of maintenance personnel by reliably discharging residual charges and creating a secure ground connection for de-energized circuits.

Engineered for systems ranging from 12kV to 40.5kV, our earthing switch is built to withstand significant short-circuit currents while maintaining structural integrity.

Core Design and Safety Features

• High Short-Circuit Capacity: Liyond earthing switches are designed with superior dynamic and thermal stability, ensuring they can safely close against full short-circuit currents without welding or failure.

• Precision Snap-Action Mechanism: Utilizing a high-speed spring operating mechanism, the closing speed is independent of the operator's force, ensuring consistent and reliable contact.

• Advanced Insulation & Durability: Featuring high-grade epoxy resin insulators and silver-plated T2 copper contacts, our switches offer exceptional dielectric strength and low contact resistance.

• Integrated Interlocking: Fully compatible with comprehensive mechanical and electromagnetic interlocking systems. These safety features strictly enforce operational sequences and prevent critical misoperations, such as closing the earthing switch while the circuit is still energized, in accordance with international safety standards.

Ordering and Selection Guide

To ensure the correct selection for your MV switchgear types, please provide the following technical details:

1. Rated Voltage (kV): (e.g., 12kV, 24kV, 40.5kV).

2. Rated Short-time Withstand Current (kA/s): The fault current capacity required.

3. Phase Distance (mm): (e.g., 150mm, 210mm, 275mm).

4. Operating Mechanism: Manual or Motorized.

5. Auxiliary Configuration: Number of auxiliary contacts or presence of a live display sensor.

Choosing the Liyond Earthing Switch series guarantees a high-performance safety barrier that protects both your operators and your power infrastructure.