平高集团英文网站-九游会ag真人官网

main features of the product:

1. the circuit breaker has a strong breaking ability. the interrupter adopts a composite air pressure structure. the full capacity breaking times are up to more than 20 times, which can effectively break various fault currents.

2. high insulation level. since a voltage of 420 kv is used instead of 363 kv, the insulation level is higher than that of similar equipment, and the guaranteed value is 650 kv for power frequency withstand voltage, 1,425 kv for lightning impulse and 1,050 kv for operation impulse.

3. good sf6 gas tightness. the product adopts the special-shaped sealing groove and has three main sealing lines. the annual air leakage rate can be equal to or less than 0.5% / year, and it is promised that the supplement of sf6 gas will not be required within 10 years.

4. aluminum shell with extremely low eddy current loss.

5. long mechanical life. when mechanical operations of gcb are tested 10,000 times and that of ds, es and h-es 5,000 times in the type test, the product condition is still not deteriorated at all; there is no need to overhaul the product within 20 years after it is put into operation, and the service life of the product is longer than 40 years.

6. it adopts non-leakage hydraulic operating mechanism and has high operational reliability.

7. it meets the requirements of iec 62271-1, iec 62271-100, iec 62771-102, iec 62271-203 and other relevant standards;