12kV 275mm centers Vacuum Interrupter Embedded Poles
Minimum Order: 0
Quality/Safety Certification: 0.00
Embedded Pole :
1.Good quality and pretty competitive price
2.Small Order Accepted
3.Prompt delivery and Green product
| 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 | 48kV,r.m.s |
| 4.Rated Impulse Withstand Voltage:Air | 95kV,Peak |
| 5.Rated Normal Current | 1250A |
| 6.Rated Short-Circuit Current(3Phase Symmetrical Basis) | 25kA,r.m.s |
| 7.Percentage D.C. Component of Rated S.C. Breaking Current | 50% |
| 8.Rated Short-Circuit Making Current | 63kA,Peak |
| 9.Rated Duration of Short Time Current | 3s |
| 10.Rated Short Time Withstand Current | 25kA,r.m.s |
| 11.Rated Peak Withstand Current | 63kA,r.m.s |
| 12.Maximum Contact Resistance at Minimum Closing Force | 20Micro ohms |
| 13.Capacitor Switching Capacity(Single Bank) | 400A,r.m.s |
| MECHANICAL DATA | |
| 1.Contact Force from Atmospheric Pressure | 19.8kgF |
| MECHANICAL REQUIREMENTS(REF. VCB) | |
| 1.Contact Stroke | 9±1 mm |
| 2.Opening Speed(average of 75 contact gap) | 0.9-1.3m/Sec |
| 3.Maximum Overtravel During Opening | 2mm |
| 4.Maximun Rebound During Opening | 2mm |
| 5.Closing Speed(average of last 30% contact gap) | 0.4-0.8m/Sec |
| 6.Maximum Contact Bounse Duration(with maximum 2 bounces) | 0.002Sec |
| 7.Rated Contact Compressive Force | 230-260kgF |
| LIFE (ESTIMATED) | |
| 1.Electrical Life at Rated Normal Current | 30,000Operations |
| 2.Electrical Life at Rated Short Circuit Current | 50Operations |
| 3.Mechanical Life | 30,000Operations |
| 4.Contact Erosion Limit | 3mm |
| 5.Shelf Life | 30Years |
