Vacuum Circuit Breaker

ZW-12 series of outdoor high-voltage vacuum circuit breaker (hereinafter referred to as “circuit breaker”) for AC 50Hz, rated voltage 12kV three-phase power system, as the sub-load current, overload current and short circuit current. The circuit breaker can be configured to coincide with the controller to identify the current characteristics and to achieve multiple automatic reclosing or permanent fault isolation; own PT as a power supply, a voltage and current signal output and control of the intelligent circuit breaker; by the electronic PT power supply And can complete the over-current delay, surge delay, short-circuit quick-break three-band composite protection.

Use of environmental conditions

1. Ambient air temperature: upper limit + 40 ℃, lower limit -30 ℃.
2. Altitude of not more than 3000M; (if the increase in altitude can be a corresponding increase in the strength of insulation or installation of equipment)
3. Wind pressure does not exceed 700Pa (equivalent to wind speed 34m / s)
4. Amplitude: No recurrence drama
5. Pollution level: III

Features
Can be equipped with spring operating mechanism, with breaking off load current, overload current and short circuit current and other basic functions. The circuit breaker is used in conjunction with a disconnector to form a “combined circuit breaker” (hereinafter referred to as “combined circuit breaker”) with a clear fracture. In the disconnector. On the user choose to use silicone rubber insulation jacket, the jacket with rain and snow, anti-pollution characteristics, can effectively avoid the isolation switch of freezing and oxidation.
Circuit breakers can be installed arrester, arrester can be installed in accordance with user requirements into and out of any side; The circuit breaker can be equipped with inrush current controller, so that it has the function of hiding and overcurrent breaking; circuit breaker can be installed 2 ~ 3 measurement or measurement transformer. The reclosable controller can be used to form a recloser type intelligent circuit breaker. Basic type and coincidence controller for easy access to power occasions, PT type and coincidence controller with no power for the occasion, intelligent circuit breakers for radiation-type power supply and ring network power supply system to help the system to eliminate instantaneous failure, automatic Restore power supply, but also isolated permanent failure, to achieve distribution network automation.

Intelligent circuit breaker with 1 to 3 reclosing function, and recloser parameters can be set;
The intelligent circuit breaker has the functions of closing the inrush current control, overcurrent protection and short circuit breaking, and the parameters can be set continuously.
Intelligent circuit breaker with a small current grounding protection, and the parameters can be continuously set;
Intelligent circuit breaker can achieve both remote control of the cable, but also under the rod wireless remote control.
Can be equipped with voltage transformer, the voltage transformer from the line high voltage side of the power, according to the need to provide itself or other control equipment 220V, 110V, 100V voltage; the circuit breaker (small hydropower type) can be used for line voltage monitoring, When the overvoltage or under voltage, the controller automatically disconnect the circuit breaker, can be widely used in small hydropower branch and the main power grid and branch, to achieve network monitoring and fault isolation; the circuit breaker (metering ) Can output 0.2 precision voltage and current signals, is the ideal choice for rural power grid substation, station outside point switch and simple metering switch.
Can be equipped with electronic PT, from the CT power to charge the battery, in the state of loss of pressure can be a number of energy storage and sub-closing operation, and can provide the external device operating voltage; with closing surge control, overcurrent protection and Short-circuit quick-break three-section composite protection function, the protection parameters can be set by the user continuous; both can achieve remote control of the cable, but also under the rod wireless remote control.

Model meaning

Technical parameters

Table 1. Main technical parameters of circuit breakers

Continued Table 1. Main technical parameters of circuit breakers   Maximum operating voltage

Table 2. Data achieved after adjustment of the circuit breaker assembly

Electric institutions