High voltage circuit breaker environmental factors when choosing

① Select appliances ambient temperature
② Select appliances humidity
③ high altitude on the impact of high-voltage electrical
④ the impact of earthquakes on the high-voltage electrical
② rated short-circuit current selection
③ The rated operating sequence selection
④ Rated breaking current-step selection
⑤ rated different ground fault current, and on the development of fault current breaking current selection
⑥circuit breakers rated line fault breaking current selection
⑦ rated line-charging breaking current, rated cable charging breaking current, rated capacitor bank breaking current, rated capacitor bank switching surge, rated

breaking current induction motor, rated load power transformers breaking current, rated breaking current reactor other choices.
Rated short-circuit breaking current selection