Zw20-12 Outdoor Column Intelligent Vacuum Electrical Circuit Breaker

• Breaking Capacity: High Voltage Circuit Breakers
• Operation: Manual Type
• Speed: Normal Type Circuit Breaker
• Arc-extinguishing Medium: Vacuum
• Installation: Open Frame
• Structure: ACB
• Model NO.: ZW20-12
• Poles Number: 1
• Type: Circuit Breaker
• Function: Conventional Circuit Breaker
• Certification: VDE, CE, CB
• Transport Package: OEM
• Specification: Standard or customization
• Trademark: DAHU
• Origin: China
• Production Capacity: 20000 Sets/Year

Product Description

Description
Ab-3s-12 series circuit breaker is a new generation of intelligent vacuum circuit breaker on column developed by our company by integrating advanced technology at home and abroad, absorbing the advantages of many families, adopting new design concept, using high-tech means. The product can be used as the switch on the 10kV side and 10kV outgoing line of the main transformer of the 35kV substation, or as the column switch of the distribution network. Combined with various control units produced by the company, it can easily realize control, protection, measurement and communication. It is the preferred equipment to realize the automation and miniaturization of the distribution network.

 
Conditions of Use
a. Working environment temperature: no more than 40 ° C; The daily average temperature shall not exceed 35 ° C; The minimum ambient air temperature is - 25 ° C;
b. Relative air humidity: the daily average value shall not be greater than 95%, and the monthly average value shall not be greater than 90%; The daily average value of water vapor pressure shall not be greater than 2.2kpa; The monthly average value shall not be greater than 1.8kpa;
c. Altitude: no more than 2000m;
d. There is no obvious pollution around by dust, smoke, corrosive and / or combustible gas, vapor or smoke;
e. Vibration or ground motion from the outside of switching equipment and control equipment can be ignored;
f. The amplitude of induced electromagnetic interference in the secondary system shall not exceed 1.6kv
 
The main function
a. Protection: whether there is a time limit current quick-break, timing overcurrent, inverse time limit overcurrent, directional overcurrent, overvoltage, undervoltage protection;
b. Control: It can be operated locally and remotely, or it can be operated in accordance with a pre-set plan
c. Automation: It can automatically realize line fault location, fault isolation, power supply restoration, parameter analysis, etc.
d. It can automatically realize low-frequency load shedding, automatic capacitor switching, etc. according to requirements, and report fault information in time through GPRS or dedicated communication network
e. Communication: support TCP/IP protocol, support GPRS, provide CAN, RS232/485 communication ports, and support multiple communication protocols (DNP3.0JEC101, etc.)
f. It can record and store parameters such as operation, operation and failure, and the protection fixed value parameter setting can be programmed on-site and remotely;
g. The mechanical parameters of the device and the operation status of the arc extinguishing chamber can be monitored online;
h. Synchronous closing of the circuit breaker can be realized, effectively suppressing operating overvoltage and inrush current, especially suitable for the operation of capacitors


Description

The ZW7 40.5 household external high voltage vacuum circuit breaker is used in a three-phase power system with an AC 50Hz and a voltage of 40.5kV. It is used for breaking and closing load currents, overload currents and short-circuit currents.

 
The main function

a. Using vacuum arc extinguishing, strong breaking capacity, long electrical life, and mechanical life of 10,000 times;
b. The structure is simple, maintenance-free, and non-overhaul period is long;
c. Good insulation performance and strong anti-pollution ability;
d. It can be equipped with spring or electromagnetic operating mechanism, with reliable mechanical performance and frequent operation; no fire and explosion hazards;
e. Built-in current transformer, accuracy of 0.2 level, can realize three mutual protection;
f. Condensation controller is included, which can keep the circuit breaker running reliably at a certain temperature and humidity.

 
Use environmental conditions
a. Ambient air temperature: upper limit ten 40ºC, lower limit -30ºC;
b. Altitude: at 2000m (if the altitude needs to be increased, the rated insulation level shall be increased accordingly)
c. Wind pressure: no more than 700Pa (equivalent to wind speed 34m/s)
d. Amplitude: earthquake intensity 8 degrees;
e Refining pollution level: Level III;
f. The maximum temperature difference: no more than 25T