Vacuum Interrupter

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 75kV,Peak
5.Rated Normal Current 630A
6.Maximum Contact Resistance at Minimum Closing Force 25Micro ohms
7.Rated Short-time Withstand Current 20kA,r.m.s
8.Rated Duration of Short Time Current 3s
9.Rated Peak Withstand Current 50kA,Peak
10.Rated Short-Circuit Making Current 50kA,r.m.s
11.Rated Active Load Breaking Current 630A
12.Rated Closed-loop Breaking Current 630A
13.Rated Cable-charging Breaking Current 10A
14.Rated Breaking Current of Single Capacitor Bank 630A
15.Rated Breaking Current of Back-to-Back Capacitor Bank 400A
16.Rated Transferring Current 3150A
MECHANICAL DATA
1.Interrupter Weight(Approx.) 1.65kg
2.Moving Part Weight(Approx.) 0.8kg
3.Closing Force Due to Bellow and Atmospheric 8.0kgF
4.Force Required to Hold Contacts Open at Full Stroke 11.8kgF
MECHANICAL REQUIREMENTS(REF. VCB)
1.Contact Stroke 8±1 mm
2.Opening Speed(average of 75 contact gap) 1.0-1.4m/Sec
3.Maximum Overtravel During Opening 2mm
4.Maximun Rebound During Opening 2mm
5.Closing Speed(average of last 30% contact gap) 0.6-1.0m/Sec
6.Maximum Contact Bounse Duration(with maximum 2 bounces) 0.002Sec
7.Rated Contact Compressive Force 7.0-9.0kgF
LIFE (ESTIMATED)
1.Shelf Life 20Years
2.Mechanical Life 10000Operations
3.Contact Erosion Limit 3mm