Outdoor intelligent high voltage vacuum circuit breaker FZW28-12

Description

FZW28-12 series outdoor cut-off vacuum load switches are suitable for outdoor three-phase ac power distribution systems with rated voltage of 12KV and rated frequency of 50Hz, and are used for opening and closing load currents and closing short circuit currents. It is suitable for substation, industrial and mining enterprises, city, agricultural network for protection, automatic distribution network and frequent operation places. The dividing load switch is composed ofFZW28-12 vacuum load switch and controller. It is electrically connected through aviation socket and outdoor sealed control cable. It can reliably judge the milliampere-zero sequence current and the same circuit breaker current inside and outside the detection range, and can be suitable for distribution systems with different neutral grounding modes.

Model and meanings

Working conditions

1. Ambient air temperature: cap+ 60 'C, lower limit - 30 'C; 

2. Altitude: 3000m. If elevation is needed, the rated insulation level shall be increased accordingly. 

3. Amplitude: seismic intensity does not exceed 8 degrees; 

4. The daily average of air relative humidity is not more than 95%, and the monthly average is not more than 90%; 

5. No fire, explosion danger, serious pollution, chemical corrosion and violent vibration places . 

Main technical parameters

Outline and mounting dimensions