Product classification
EVB series sealed pole vacuum circuit breaker
The EVB series sealed vacuum circuit breakers are suitable for indoor switchgear in power systems with voltages of 10KV, 20kV, and 35kV, and a rated frequency of 50(60)Hz. They are used for switching various types of loads and in places with frequent operations, providing protection and control for electrical equipment in industrial enterprises, power plants, and substations. The operating mechanism of the EVB series indoor vacuum circuit breaker adopts a modular design, with a simple principle, compact structure, few moving parts, stable and reliable operation, and a long mechanical life. The EVB series withdrawable functional units are suitable for matching with medium voltage switchgear projects, with different configurations of the truck's primary components, which can provide busbar connection, energy measurement, and overload or short-circuit protection for electrical equipment.
- Description
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Product Overview:
The EVB series sealed vacuum circuit breakers are suitable for indoor switchgear in power systems with voltages of 10KV, 20kV, and 35kV, and a rated frequency of 50(60)Hz. They are used for switching various types of loads and in places requiring frequent operations, providing protection and control for electrical equipment in industrial enterprises, power plants, and substations. The operating mechanism of the EVB series indoor vacuum circuit breaker adopts a modular design, with a simple principle, compact structure, few moving parts, stable and reliable operation, and a long mechanical life. The EVB series withdrawable functional units are suitable for engineering matching with medium voltage switchgear, with different configurations of the truck that can have busbar connection, power measurement, and overload or short-circuit protection functions.
Main Technical Parameters:
Rated Voltage: 12KV, 24KV, 40.5kV
Rated Current: 630～4000A (12KV), 630~2500A (24kV, 40.5kV)
Rated Short-Circuit Breaking Current: 20~50kA
Mechanical Life: ≥30000 (below 31.5kA)/20000 times (40kA, 50KA)
Full Capacity Breaking Times: 30 times (below 31.5kA)/20 times (40kA, 50KA)
Product Features:
▪ E2-M2-C2 level vacuum circuit breaker; ▪ Anti-condensation, anti-pollution, low resistance;
▪ Modular mechanism;
▪ Silent gear drive;
▪ Single-piece spring contact technology;
▪ Provides permanent magnet, side-mounted, electric truck, intelligent measurement and control, and diagnostic solutions;
▪ Fully insulated, fully sealed, maintenance-free main circuit;
▪ The external flat group of the pole increases the creepage distance, enhancing the ability to resist condensation and pollution;
▪ Sealed pole protection arc extinguishing chamber from external hazards, ensuring long life and high reliability;
▪ Standardized design for product interchangeability.
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