Parameter	Unit	Data
Rated voltage	kV	12
Rated current	A	630/1250
Rated frequency	Hz	50
Rated power frequency withstand voltage(1min)	kV	42
Lightning impulse withstand voltage	kV	75
Rated short circuit breaking current	kA	20/25
Rated short circuit making current	kA	50/63
Switching operations of rated short circuit switching current	Time	30
Rated switching current of single capacitor bank	A	630
Rated short time withstand current	kA	20/25
Rated withstand current(peak)	kA	50/63
Rated duration of short circuit	s	4
Mechanical endurance	Time	10000
Switching operations of rated current	Time	10000
Closing force due to bellow and atmosphere	N	120±40
Force required to hold contacts open at full stroke	N	190±50
Time-limited circuit resistance at rated compressive force	μΩ	≤30
Shelf life	Years	20
Contact limit erosion	mm	3
Weight of moving parts	kg	≤1.3

▋ Mechanical data required for the matcded vacuum switchgear

Parameter	Unit	Data
Clerance between open conatcts	mm	10±1
Contact connection stroke	mm	3.5±0.5
Average opening speed	m/s	1.0±0.25
Average closing speed	m/s	0.65±0.15
Rated compressive force of contact	N	1600/2000±100
Contact bouncing duration at closing operation	ms	≤2
Out of simultaneity of contact closing and opening	ms	≤1

▋ Dimension