DENGGAO ELECTRIC CO., LTD.  

Product Name: Outdoor Disconnect Switch Porcelain Insulator Type Function: Conventional Circuit Breaker, Overcurrent Protection Type: Circuit Breaker Installation: Fixed Arc-extinguishing Medium: Vacuum Operation: Manual Type Breaking Capacity: High Voltage Circuit Breakers Trademark: DGG Transport Package: Export Box Origin: China HS Code: 8504311000 Product Description GeneralNew problem of distrbution network as below:1. When the main trunk circuit modified,the branch line failure rate is rising;2. Due to the failure of branch line user and protect mismatch,spread to the whole feeder power outages and lead to liability disputes;3. Transformer substation grounding selected-line equipment can not satisfy quick find grounding point demand;4. Due to protective circuits with multilevel add delay,worsening of power network working.FZW28-12F type excellent solve the problem as above.VCB main technical dataNo.ItemUnitData1Rated frequencyHz502Rated voltagekV123Rated currentA630/12504Rated short-time power frequency withstand voltageInterphase, to earth(wet)kV/min42/1Interphase, to earth(dry)48/1Break(dry)34/1Secondary circuit to earth2/15Rated lightning impulse withstand voltageInterphase, to earthkV75Break856Rated short-circuit breaking currentkA20/257Rated short-circuit making current(peak)50/638Rated short-time withstand current and durationkA/s(20/25)/49Rated peak withstand currentkA50/6310Rated short-circuit breaking current breaking timesTimes3011Rated operating voltage and rated voltage of auxiliary circuitVAC/DC220,DC48,DC2412Main circuit resistanceWithout isolationμΩ≤80With isolation≤12013Machanical lifeTimes10000Note: If altitude over than 1000m, the rated insulation level should be modify as appropriate.