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Product Name: TD325U Vacuum Interrupter Hit: 1196 Category name: Vacuum Interrupter Model: VITD 12/1250-25U [Back]
Product Description
| 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 | 18Micro ohms |
| 13.Capacitor Switching Capacity(Single Bank) | 400A,r.m.s |
| MECHANICAL DATA | |
| 1.Interrupter Weight(Approx.) | 2.65kg |
| 2.Moving Part Weight(Approx.) | 1.2kg |
| 3.Contact Force from Atmospheric Pressure | 15.9kgF |
| MECHANICAL REQUIREMENTS(REF. VCB) | |
| 1.Contact Stroke | 9±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 | 184-203kgF |
| LIFE (ESTIMATED) | |
| 1.Electrical Life at Rated Normal Current | 50,000Operations |
| 2.Electrical Life at Rated Short Circuit Current | 100Operations |
| 3.Mechanical Life | 50,000Operations |
| 4.Contact Erosion Limit | 3mm |
| 5.Shelf Life | 20Years |
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