Vacuum switches 24 kV Vacuum circuit breaker EDE - 24 кВ

Normal Operating Conditions

Altitude: ≤ 1000 m above sea level
Ambient Temperature:
Maximum: +40 °C
Minimum: -25 °C
Maximum Relative Humidity:
Daily average: ≤ 95%
Monthly average: ≤ 90%
Maximum Partial Water Vapor Pressure:
Daily average: ≤ 2.2 kPa
Monthly average: ≤ 1.5 kPa

Special Operating Conditions

Special operating conditions must be agreed upon between the manufacturer and the user. It is necessary to consult the manufacturer for each specific condition.

• For altitudes above 1000 m: It is necessary to account for the reduction in air dielectric strength or order a plateau-type circuit breaker that meets the required insulation standards.
• For elevated ambient temperatures: The current-carrying capacity should be reduced, and additional ventilation should be provided to dissipate heat.
• Other Considerations: Should be discussed with the manufacturer.

Description of the EDE Circuit Breaker

The EDE automatic circuit breakers incorporate advanced design concepts, featuring a modular mechanism that facilitates easy installation, maintenance, inspection, and operation. These products are suitable for 12 kV and 24 kV power transmission and distribution systems, widely used in industries such as energy, petrochemical engineering, metallurgy, manufacturing, transportation, construction, environmental protection, and large enterprises or power infrastructure

EDE Circuit Breaker Environmental Benefits

The EDE circuit breaker does not pollute the environment. It is maintenance-free and withstands frequent operations. Compared to conventional circuit breakers, its mechanical endurance is increased from 10,000 to 35,000 operations, representing a significant improvement. Tests for capacitive current breaking have shown an extremely low probability of re-ignition of the arc. These circuit breakers offer extended electrical endurance.

Optimized Mechanical Drive in Vacuum Circuit Breakers

The modular spring-operated mechanism offers advantages such as convenient maintenance with minimal downtime, high part versatility, and improved compatibility with vacuum interrupters. This enhances technical performance and ensures excellent operational characteristics. The modular design of the secondary control circuit boards allows for high flexibility. High-quality self-locking connectors are used for electrical connections, simplifying replacement and ensuring reliability.

High-Efficiency Buffer

A high-efficiency buffer significantly reduces the bounce amplitude of the moving contact in the vacuum circuit breaker during operation, preventing mechanical wear caused by partial overload of the vacuum interrupter. In capacitor bank switching tests, no breakdown or re-ignition was detected due to reduced bounce amplitude.

Product Model

All assembly lines are equipped with high-precision pneumatic tools and clamps, ensuring full automation of the assembly process and online testing. Production automation eliminates errors associated with manual execution of manufacturing operations.

• Advanced assembly devices and testing equipment for production lines effectively ensure the stability and compliance of mass production;
• Accurate spring testers determine the force characteristics of key spring elements in circuit breakers, ensuring their stable and reliable operation;
• The incoming inspection mechanism ensures rigorous quality checks of components received from external suppliers;
• High-precision dynamic performance testers for circuit breakers and loop resistance testers ensure outgoing quality control of circuit breakers;
• Before shipment from the factory, circuit breakers undergo 300 operation tests to verify durability;
• Strict adherence to the ISO9001 quality management system ensures consistent high quality of vacuum circuit breakers, while comprehensive and prompt technical support provides expert solutions.

Thanks to interlock protection against improper operation, these circuit breakers, when installed in distribution cabinets, can implement the “five protections” interlock functions, avoiding malfunctions and maximizing operator safety. The circuit breaker trolley can be moved from the test position to the service position only when both the circuit breaker and the grounding switch are in the OFF position. The circuit breaker can only be switched ON in the service/test position. When the circuit breaker is ON, its trolley cannot be moved; this can be done only when the circuit breaker is in the OFF position. The circuit breaker cannot be moved from the service position to the test position while it is ON. The circuit breaker cannot be switched ON while it is in an intermediate position.
If the closing signal is not deactivated in time when the circuit breaker is ON, the internal anti-trip control circuit will disconnect the closing circuit to prevent multiple repeated closings (optional).
If electrical interlocking is selected, the circuit breaker cannot switch ON if the secondary circuit cannot supply power or if the supplied power is insufficient for the proper operation of the interlock solenoid (optional).