Medium and Low voltage Switches Air Insulated Switchgear Gas Insulated Switchgear

We focus on the research and development and manufacturing of medium and low voltage complete switch products, mainly providing air insulated switchgear, gas insulated switchgear, gas insulated ring main unit, solid insulated ring main unit, indoor vacuum circuit breakers, arc extinguishing chambers and other switch components, outdoor circuit breaker equipment, etc.

Medium and low voltage switches are devices used in electrical power systems to control the flow of electrical current. They are designed to open or close electrical circuits, allowing the safe isolation or connection of various electrical elements. Here is some information about medium and low voltage switches:

1. Medium Voltage Switches: Medium voltage switches are designed to operate in voltage ranges typically from 1 kV (kilovolt) to 36 kV. They are used in various applications, including distribution networks, industrial plants, and infrastructure systems. Medium voltage switches can be categorized into different types based on their operating mechanisms:

   - Air Insulated Switchgear (AIS): AIS consists of switches, circuit breakers, and disconnectors installed in air as the insulation medium. It is commonly used in distribution networks due to its simplicity and cost-effectiveness.

   - Gas Insulated Switchgear (GIS): GIS utilizes a gas, such as sulfur hexafluoride (SF6), as the insulation medium. It offers compact design, higher reliability, and better environmental characteristics compared to AIS. GIS is often used in urban areas and space-constrained installations.

   - Vacuum Circuit Breaker (VCB): VCB uses vacuum as the interrupting medium to extinguish the electrical arc during circuit interruption. It provides fast switching capability, high insulation capabilities, and low maintenance requirements.

   - Oil Circuit Breaker (OCB): OCB operates by using oil as the arc extinguishing medium. However, OCBs are less commonly used due to environmental concerns and a shift towards more eco-friendly alternatives.

2. Low Voltage Switches: Low voltage switches are designed for voltage levels typically up to 1 kV. They are commonly used in residential, commercial, and industrial applications. Low voltage switches can be further classified based on their operating mechanisms:

   - Circuit Breakers: Circuit breakers are devices designed to protect electrical circuits from overcurrent and short circuit faults. They automatically interrupt the current flow when a fault occurs to prevent damage to the electrical system and connected equipment.

   - Contactors: Contactors are switches specifically designed for controlling electric motors and other high-power loads. They provide remote control of motor operations and offer features such as overload protection and interlocking functions.

   - Disconnect Switches: Disconnect switches, also known as isolators or load break switches, are used for manually isolating electrical circuits or equipment for maintenance or repair purposes. They provide a visible breaking point in the circuit and ensure the safety of personnel working on the circuit.

   - Switch-disconnectors: Switch-disconnectors combine the functions of a switch and a disconnect switch. They can be manually operated to close or open electrical circuits, providing both control and isolation capabilities.

Medium and low voltage switches play a crucial role in the safe and reliable operation of electrical systems. They are essential components that enable the control, protection, and efficient distribution of electrical power. The choice of the appropriate switch type depends on the specific application, voltage level, operational requirements, and system design considerations