25 KA Vacuum Interrupter 1.5mM/S Opening Speed And 0.8M/S Closing Speed

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ERFA Industries Group

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Specification

1	Rated Current	A	2000	1250	1600	1250	1250
2	Circuit resistance at lowest rated contact force	u Ω	≤17	≤25	≤20	≤25	≤25



3	Rated short-circuit breaking current	KA	25	12.5	25	25	20
4	Breaking operations of rated short circuit breaking current	Times	30
5	Rated short-time withstand current	KA	25	12.5	25	25	20
6	Rated duration of short-circuit	S	4
7	Rated peak withstand current	KA	63	31.5	63	63	50
8	Rated short -circuit making current	KA	63	63.5	63	63	50
9	Rated breaking current of single capacitor bank	A	630
10	Rated breaking current of back -to-back capacitor bank	A	400
11	Rated operating sequence	O-0.3-CO-180S-CO

Mechanical data

1	Weight of movable parts	Kg	1.7
2	Closing force due to bellow and atmosphere	N	90±40
3	Force required to hold contacts open at full stroke	N	180±50

Mechanical requirements

1	Clearance between open contacts	mm	15±1
2	Average opening speed(average of first 75% of contact gap)	m/s	1.5±0.2
3	Average closing speed(average of last 30% contact gap)	m/s	0.8±0.2
4	Rated added external contact final force	N	2500±200	1200±200	2500±200	2500±200	2000±200
	Added external contact force at contact touch point	N	1750±125	840±60	1750±125	1750±125	1400±100
5	Contact bouncing duration at closing operation	ms	≤2
6	Closing and opening non-simultaneity of three-phase contacts	ms	≤1
7	Maximum rebound during opening	mm	≤2

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vacuum fault interrupter

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