Parameter	Unit	Data
Rated voltage	kV	12
Rated current	A	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	25
Rated short circuit making current	kA	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	25
Rated withstand current(peak)	kA	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	70±40
Force required to hold contacts open at full stroke	N	120±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	2000±100
Contact bouncing duration at closing operation	ms	≤2
Out of simultaneity of contact closing and opening	ms	≤1

▋ Dimension