Vacuum Interrupter for Load Breaking Switches
- Product Description
- Leveraging on the expertise of a dedicated team of employees, we bring forth the finest quality Indoor Embedded Poles to the clients at the market leading prices. The Indoor Embedded Poles, which we supply and export, are appreciated for their unmatched electrical endurance. Moreover, the Indoor Embedded Poles are preferred due to their excellent mechanical and electrical life.
| Rated Frequency | 50/60Hz |
| Rated Maximum Line to Line Voltage | 24kV,r.m.s |
| Rated Power Frequency Withstand Voltage:Air | 79kV,r.m.s |
| Rated Impulse Withstand Voltage:Air | 125kV,Peak |
| Rated Normal Current | 1250A |
| Rated Short- Circuit Current ( 3 Phase Symmetrical Basis) | 31.5kA,r.m.s |
| Percentage D.C. Component of Rated S.C. Breaking Current | 50.00% |
| Rated Short-Circuit Making Current | 80kA,Peak |
| Rated Duration of Short Time Current | 4s |
| Rated Short-Time Withstand Current | 31.5kA,r.m.s |
| Rated Peak Withstand Current | 80kA,r.m.s |
| *Maximum Contact Resistance at Minimum Closing Force | 25Micro ohms |
| *Rated Breaking Current of Single Capacitor Bank | 630A,r.m.s |
| *Rated Breaking Current of Back-to-Back Capacitor Bank | 400A,r.m.s |
| Rated operating sequence | o-0.3s-co-180s-co |
| Closing Force due to Bellow and Atmospheric | 120±50N |
| Force Required to Hold Contacts open at Full Stroke | 160±90N |
| Contact Stroke | 13±1 mm |
| Opening Speed(average of 75 contact gap) | 1.5±0.2m/Sec |
| Maximum Overtravel During Opening | 2mm |
| Maximun Rebound During Opening | 2mm |
| Closing Speed(average of last 30% contact gap) | 0.9±0.2m/Sec |
| Maximum Contact Bounse Duration(with maximum 2 bounces) | ≤2ms |
| Rated Contact Compressive Force | 3150±200N |
| Closing and Opening non-simultaneity of three-phase Contacts | ≤2ms |
| Electrical Life at Rated Normal Current | 50,000 Operations |
| Electrical Life at Rated Short Circuit Current | 100 Operations |
| Mechanical Life | 50,000 Operations |
| Contact Erosion Limit | 3mm |
| Shelf Life | 20Years |
Note
- Meets or exceeds the electrical endurance requirements of class E2 for autoreclosing duty per IEC 62271-200 and JB 8738-2008.
- * Rated Characteristics to be given on request
