TJ340D Vacuum Interrupter

Vacuum Interrupter for Contactor


VITJ 12/630D

ELECTRICAL RATINGS(3PHASE) SYMMETRICAL BASIS
1.Rated Frequency	50/60Hz
2.Rated Maximum Line to Line Voltage	12kV,r.m.s
3.Rated Power Frequency Withstand Voltage:Air	42kV,r.m.s
4.Rated Impulse Withstand Voltage:Air	95kV,Peak
5.Rated Normal Current	630A
6.Maximum Contact Resistance at Minimum Closing Force	50Micro ohms
7.Limit Breaking Current	6.3kA
8.Rated Short-Time Withstand Current	6.3kA
9.Rated Making Current	6.3kA
10.Rated Breaking Current(Max/Min)	5kA/0.125kA
11.Rated Duration of Short Time Current	4s
MECHANICAL DATA
1.Interrupter Weight(Approx.)	1.47kg
2.Moving Part Weight(Approx.)	0.47kg
3.Closing Force due to Bellow and Atmospheric	7020N
4.Force Required to Hold Contacts open at Full Stroke	10030N
MECHANICAL REQUIREMENTS(REF. VC)
1.Contact Stroke	61 mm
2.Opening Speed(average of 75 contact gap)	0.70.3m/Sec
3.Closing Speed(average of last 30% contact gap)	0.30.1m/Sec
4.Contact Bounce Duration at Closing Operation	3ms
5.Closing and Opening non-simultaneity of three-phase Contacts	1ms
6.Maximum Rebound during opening	2mm
7.Rated Contact Compressive Force	10010N
LIFE (ESTIMATED)
1.Electrical Endurance AC-3	250,000Operations
2.Electrical Endurance AC-4	100,000Operations
3.Mechanical Life	300,000Operations
4.Contact Erosion Limit	3mm
5.Shelf Life	20Years

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