Earthing Switch

Working Environment of Grounding Switch/Earthing Switch

Liyond’s grounding switches are a perfect fit for 12KV to 40.5KV and lower AC 50Hz power systems, offering reliable grounding protection and working hand-in-glove with a wide range of high-voltage switchgear. It’s normal working environment are as follows:

Altitude: ≤1000m

Ambient temperature: -10℃ to +40℃

Earthquake intensity: ≤8 degree

Pollution level: II

Relative humidity: Daily average≤95%, monthly average≤90%

What is Earth Switch in Switchgear?

Within medium voltage indoor switchgear, an earth switch (also known as a grounding switch) is a crucial mechanical disconnect designed as a key safety measure. Primarily used for earthing isolated sections like busbars or outgoing feeders, these indoor earthing switches bring circuit parts down to earth, ensuring personnel safety during maintenance by dissipating any residual charge and providing a secure path to ground. Often manually or motor-operated and interlocked with vacuum circuit breakers to prevent accidental energization while earthed, their robust design must withstand fault currents. Situated near disconnector switches, sometimes on both sides of a circuit breaker for dual grounding points during servicing, various types of earthing switch cater to specific switchgear configurations and voltage ratings, offering reliable earthing protection.

Features of Medium Voltage Grounding Switch

Simple Structure and Compact Design: Our medium voltage grounding switches boast a simple yet robust and compact structure, ensuring ease of installation and flexible operation.

Lightweight Design and Simplified Handling: Their lightweight design simplifies handling, while advanced engineering guarantees steady performance and high reliability.

Top-Tier Materials and Excellent Stability: Built with top-tier materials, these grounding switches offer excellent dynamic and thermal stability, crucial for withstanding fault currents. They also feature fast breaking and making capabilities.

Fast Breaking and Making Capability: With fast breaking/making and easy installation/adjustment, these grounding switches offer convenient operation from either the right or left side.

Straightforward Installation and Adjustment: They are designed for straightforward installation and adjustment. With a practical and scientific apparatus, these grounding switches offer the added convenience of operation from both right and left sides.