09,22,2026 15 views
The commonly used high-voltage switchgear includes 10kV and 35kV.
10kV high voltage switchgear is used for transmission and distribution, energy conversion, control and protection in 10kV power systems. The products of 10kV switchgear meet the technical standards such as IEC298 and GB3906, and can meet the requirements of various occasions. They are widely used in power plants, hydropower plants, industrial and mining enterprises, schools, commercial places, and secondary substations of power systems for receiving and transmitting electricity, as well as starting large high-voltage motors. They are important distribution products in power systems.
35kV high voltage switchgear is used for transmission and distribution, energy conversion, control and protection in 35kV power systems. It is suitable for three-phase AC power systems with a rated voltage of 40.5kV and a rated frequency of 50Hz. It is used to receive and distribute electrical energy and control, protect and detect circuits. In addition to being widely used in general power systems, it can also be used in places with frequent operations.
High voltage switchgear can be divided into five types based on the installation method of the main switch: fixed, handcart, center mounted, bottom mounted, and double-layer layout.
1. Fixed type, the main switch (circuit breaker, load switch, voltage transformer and other main electrical appliances) is fixedly installed, air insulated, and can be divided into box type and internal partition form.
2. Handcart type, the main switch and main electrical appliances can be moved outside the cabinet, and the electrical connection between the moving parts and the fixed circuit is achieved by the engagement of isolation contacts. Characteristics: The main switch is relatively bulky to remove, and it is integrated with the car processing, requiring high precision in processing.
3. Mid mounted, the main switch trolley is divided into two parts for transportation. The trolley is a universal type, and the main switch is installed in the middle of the cabinet, also known as a detachable type. Features: The structural form is further advanced compared to the handcart style, and the operation is lightweight.
4. Bottom mounted, the main switch car and the carrier car are divided into two parts. Characteristics: The transport vehicle is a universal type, with the main switch installed at the bottom of the cabinet, making operation more convenient.
5. Double layered layout, where the main switch of a cabinet is arranged in two layers, equivalent to one switch cabinet having the function of two switch cabinets. Features, reliability, and safety are guaranteed, saving floor space and having good economy.
