Circuit–breaker used ceramic vacuum interrupter

Parameter name	Unit	Value
Rated voltage	kV	12
Rated normal current	A	1250,1600
Rated frequency	Hz	50
Rated short-circuit breaking current	kA	31.5
Rated short-circuit making current	kA	80
Rated peak withstand current	kA	80
Rated short-time withstand current	kA	31.5
Rated short-circuit continuous time	S	4
Rated single capacitor unit breaking current	A	630
Rated back to back capacitor unit breaking current	A	400
Rated short-time (1 min) frequency withstand voltage	kV	42
Rated contact pressure time-limit loop resistive	µΩ	≤11
Rated short-circuit breaking current breaking times		30
Rated lightning impulse withstand voltage	V	75
Mechanical life		10000
Contact automatic	N	120±50
Force required to hold contacts open at full stroke	N	200±50
Contact-wear allowance thickness	mm	3
Internal gas pressure	Pa	≤1.33×10-3
Shelf life		20

Type: TD-12/1250-31.5(BGE650)