Specifications

Liyond Electric's Isolating Switch series, also known as disconnectors, provides a critical safety barrier for medium and high-voltage electrical networks. As a premier disconnector switch manufacturer, we offer precision-engineered devices that create a visible physical break in the circuit. This ensures that downstream equipment is completely isolated from the power source, providing a safe environment for maintenance and fault inspection.

Engineered for systems ranging from 12kV to 40.5kV, our disconnectors are designed for seamless coordination with vacuum circuit breakers to enhance overall grid stability and personnel safety.

Product Classification and Applications

Liyond offers two core series based on different installation environments and operational requirements:

Indoor Isolating Switch Series

Liyond indoor isolating switches are renowned for their exceptional thermal stability and mechanical endurance. Specifically engineered for high-voltage environments ranging from 12kV to 40.5kV, this series features standardized mounting interfaces and flexible operational configurations, allowing for seamless integration into various medium-voltage switchgear, such as the KYN28.

Wide Current Coverage: Rated current options range from 400A to 4000A, meeting load requirements from basic industrial applications to large-scale public utilities.

High Short-Circuit Reliability: Features outstanding rated short-time withstand currents (up to 40kA/4s) and peak withstand currents (up to 100kA), ensuring structural integrity during fault events.

Superior Insulation Levels: Power frequency withstand voltage reaches up to 42kV (phase-to-earth), and lightning impulse withstand voltage up to 75kV (peak), providing extremely high dielectric strength.

Flexible Drive Mechanisms: Fully compatible with heavy-duty manual mechanisms (such as the CS6-1 and CS6-2 series) or motorized mechanisms (such as the CX-6 II), supporting efficient local or remote switching.

Outdoor Isolating Switch Series

Designed for outdoor environments, the Liyond outdoor series surpasses rigorous environmental challenges. Their application range extends from 12kV distribution networks to 126kV transmission-grade switchyards, utilizing high-strength mechanical designs to withstand strong winds, ice coverage, and various natural stressors.

Multi-level Voltage Adaptability: Covers 12kV, 40.5kV, 72.5kV, and 126kV, supporting continuous rated currents from 200A to 2000A.

High-Voltage Insulation Security: For high-voltage applications, power frequency withstand voltage reaches up to 230kV, with lightning impulse peak withstand levels up to 450kV.

Dynamic Fault Resilience: Features high-capacity performance with rated short-time withstand currents up to 25kA/4s and peak withstand ratings of 63kA.

Versatile Transmission Systems: Compatible with manual mechanisms or motorized mechanisms to achieve precise automated switching control.

Selection and Ordering Guide

To ensure the selected isolating switch perfectly matches your system specifications, please provide the following basic information during inquiry:

Rated Technical Parameters: Rated voltage (kV), rated current (A), and required short-circuit withstand current (kA).

Application Scenario: Specify whether it is for indoor switchgear installation or outdoor pole/pedestal mounting, and mention any requirements for high altitude or high pollution environments.

Operation Mode: Clearly state if a manual mechanism (CS series) or a motorized mechanism (CJ/CX series) is required for remote control.

Additional Functions: Indicate if integrated grounding switch or specific phase-to-phase distances are needed.

Choosing the Liyond Isolating Switch series means selecting visible safety, a robust mechanical structure, and a proven electrical isolation solution.