Compact medium voltage vacuum contactor

The EVC6-12kV and 7.2KV 400A series AC medium voltage vacuum contactor is a brand-new generation of products developed by our company in response to market demands, capable of fully meeting the latest requirements of the 10kV network. By summarizing years of user experience and combining the latest design concepts of our company, the product is aesthetically pleasing, reliable in performance, easy to use and maintain, and can completely replace imported products. It can be reliably used for switching capacitive loads, such as for making and breaking transformers (AC-6a) and capacitor banks (AC-6b).

Control and Auxiliary Circuits

• Control power supply voltage Us: ac./dc. 110V, 220V, 380V, or customized according to user requirements.
• Control power consumption: Electrical self-holding: starting <2000W, holding <100W. Mechanical self-holding: closing <2000W, opening <1000W.
• Auxiliary contacts: Up to nine sets of normally open and normally closed contact combinations, five sets for mechanical holding.
• Auxiliary contact capacity: AC380V 6A; AC220V 10A.
• Power frequency withstand voltage: 2kV (excluding components).

Operating Characteristics

• Closing and opening time ≤120ms.
• Three-phase synchronism ≤2ms.
• Minimum pick-up voltage ≤85%Us, maximum release voltage = 10%~75%Us.

Main Circuit

• The vacuum switch tube uses products from well-known domestic manufacturers. The technology is mature, quality reliable, and has a good market reputation.
• The main circuit base adopts an integrated molded frame structure, which has good rigidity, minimal deformation, high insulation strength, and good resistance to pollution.
• The 630A current rating uses a double dynamic end connection with end surfaces and conductive clips, resulting in low resistance, low temperature rise, and greater reliability.
• The conductive busbar is aesthetically pleasing, durable, and provides a reliable connection, making it convenient for users.

Electromagnetic System

Operating Structure

Ease of Use and Maintenance

• The product body can be installed horizontally or suspended, with mounting holes designed for easy suspension.
• The control circuit connection terminals use universal rail-mounted terminal blocks (plug-in terminal blocks can also be installed according to customer needs), with functional markings to prevent incorrect wiring and facilitate connection. The number of auxiliary contacts can be combined according to user requirements.