CKVB-12 indoor vacuum circuit breaker is suitable for indoor switchgear of three-phase AC 50Hz, rated voltage 12kV power system. It is suitable for power plants, substations and power distribution rooms in the power system; especially suitable for places requiring frequency operation under rated working current or multiple breaking and closing of short-circuit current. CKVB series indoor high-voltage vacuum circuit breaker can be divided into side-mounted type, formal-mounted type and handcart type according to the installation method; according to the structure, it can be divided into insulating cylinder and solid-sealed pole type. The maximum rated current is up to 4000A.

The circuit breaker conforms to GB 1984-2014 "High Voltage AC Circuit Breaker", JB/T 3855-2008 "3.6~40.5kV Indoor AC High Voltage Vacuum Circuit Breaker", DL/T 403-2017 "12kV-40.5kV High Voltage Vacuum Circuit Breaker Ordering" Technical Conditions" and IEC62271-100 and other standards.

Features

Vacuum arc extinguishing; novel longitudinal magnetic field vacuum arc extinguishing chamber, better arc extinguishing performance; lower operating overvoltage;

Excellent performance; the conductive part of the pole and the ceramic vacuum interrupter are enclosed in an epoxy resin sleeve; to prevent damage to the vacuum interrupter in humid, hot and dirty environments, ensure the high resistance state of the interrupter; store energy, maintain, remove Important functional parts such as buckles are treated with core strengthening and D.NiP treatment on the surface; the mechanism parts are more corrosion-resistant, more wear-resistant, and the mechanism action is more reliable;

Flexible structure; modular spring changing mechanism; more reliable opening and closing operation; more convenient maintenance;

Easy to operate; operation mode: manual or electric; electric operation power supply: AC and DC universal, 220V or 110V; optional devices can be selected at most: two overcurrent trips + 1 loss of voltage trip or three overcurrent trips +1 lock

Stable and reliable; the optimized design of optional devices such as anti-jump and blocking, overcurrent trip, voltage loss trip, etc. and the secondary circuit provides a strong guarantee for the reliable and safe operation of the circuit breaker, and also provides users with protection and intelligent control. The design of other aspects provides more choices and interfaces;

Strong applicability; excellent performance, stable operation, long life, less maintenance, no explosion hazard, no pollution, low operating noise;