|
ELECTRICAL RATINGS(3PHASE) SYMMETRICAL BASIS
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| 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 |
16kA,r.m.s
|
| 8.Rated Duration of Short Time Current |
3s
|
| 9.Rated Peak Withstand Current |
40kA,Peak
|
| 10.Rated Short-Circuit Making Current |
40kA,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
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