KW3M-12 type outdoor intelligent permanent magnet vacuum circuit breaker

General introduction
KW3M-12 Outdoor High Voltage Intelligent Permanent Magnetic Vacuum Circuit Breaker is a self-developed vacuum circuit breaker with permanent magnet operating mechanism. Mainly by the vacuum circuit breaker body and computer protection controller composed of two parts, through the air outlet and outdoor sealed control cables for electrical connections. With measurement, fault detection, protection control and communication functions. Mainly used as substation 10kV outlet switch and 10kV line, can reliably determine and detect zero and external sector current and phase short circuit fault current, to achieve automatic removal of single-phase ground fault and short circuit fault.
The switch body is designed as a fast acting permanent magnet mechanism with few motion components, fast moving speed, reliable operation, good closing and closing characteristics, long service life and maintenance-free. The controller adopts the fast protection algorithm and cooperates with the circuit breaker body The whole set of fast break protection action time ≤ 25ms. This time is the time from the occurrence of the fault current to the time when the circuit breaker cuts off the fault current, which solves the problem that the 0 second quick-break protection of the outlet switch of the substation can not cooperate with the protection level difference of the branch line switch, effectively isolates the fault area, avoids the switch trip of the substation, Range, improve power supply reliability and continuity

Reference Standard

◆Working temperature： -40～+70℃
◆Work environment humidity： 0～95%
◆Place of work elevation： ≤3000 m
◆Wind pressure： ≤ 700 Pa
◆Ice thickness：≤10mm
◆External insulation contamination level：  Ⅳ
◆seismic intensity： ≤ 8°
Note: This product is not suitable for fire, explosion hazard, chemical corrosion and severe vibration and other places

Model Description
Product model and meaning：

Features
◆Preclude the use of vacuum arc, reliable breaking, contact wear and tear, maintenance-free；
◆Epoxy resin composite as the outer insulation material, pressure and weather resistance, no oil, no SF6, environmental protection；
◆Permanent magnet operating mechanism, life expectancy up to 30,000 times, can quickly cut off the fault, to achieve rapid protection；
◆Can be configured with integrated isolation switch, with a clear visual disconnect, and with anti-error interlock；
◆Optional manual operating mechanism, in case of emergency can be manually closing operation.

Body dimensions

Ontology technical parameter
Circuit breaker switch technical parameters

Mechanical characteristics parameters

Features 
Telemetry function: can detect voltage, current and other AC analog and battery voltage, temperature and other DC analog.
Remote signal function: can detect the switch status signal, switch energy storage signal, battery low voltage alarm and other status information, and with dual-position remote signal processing capabilities, support for remote transmission of variable bit priority transmission.
Remote control function: RF remote control can be closed and closed. With local / remote selector switch, you can access the remote control station master remote opening and closing.
Fault detection: configure single-phase ground, three phase phase protection, overload, protection against inrush current protection, and record the size of the protection current.
Communication function: with serial port and network communication interface, built-in 101,104 and other power industry standard communication protocol, the data can be uploaded to the master through optical fiber / Ethernet, GPRS / CDMA and other means.
Self-diagnosis, self-recovery function: Self-diagnostic function, when found that internal hardware and software anomalies, timely recording and reporting, and the software has a power-on self-recovery function.
Power Management Features: Support dual AC power backup power supply, the battery as a backup power supply, seamless switching technology using soft switching, when the main power supply
Barrier, the standby power can be automatically seamlessly into; with battery activation management capabilities to automatically and manually realize the battery charge and discharge.

Control box technical parameters

Control box performance parameters

Control box dimensions