TF426E VITF 24/1250-31.5E
- Product Description
- If Vacuum Interrupter For Load Breaking Switches are the need of the clients then, we have the perfect solution for them. We have gained expertise in offering superior quality Vacuum Interrupter For Load Breaking Switches in a time bound manner. We assure that the Vacuum Interrupter For Load Breaking Switches are originally manufactured in complete compliance with the set industrial standards. The Vacuum Interrupter For Load Breaking Switches are appreciated for their high electrical endurance, mechanical life and shelf life.
| Rated frequency | 50/60Hz |
| Rated Voltage | 24kV,r.m.s |
| Rated short-time power-frequency withstand voltage (1 min) | 60kV,r.m.s |
| Rated lightning impulse withstand voltage | 145kV,Peak |
| Rated Current | 1250A |
| Maximum Contact Resistance at Minimum Closing Force | ≤35Micro ohms |
| Rated short-time withstand current | 31.5kA,r.m.s |
| Rated duration of short-circuit | 1s |
| Rated peak withstand current | 85kA,r.m.s |
| Rated short-circuit making Current | 31.5kA,r.m.s |
| Rated active load breaking current | 1250A |
| Rated closed-loop breaking current | 1250A |
| Rated capacity of no-load transformer | 10A |
| Rated cable-charging breaking current | 16A |
| Rated line charging breaking current | 1.5A |
| Rated earth fault breaking current | 48A |
| Rated cable and line charging breaking current under earth fault condition | 27.7A |
| *Rated breaking current of single capacitor bank | 400A |
| *Rated breaking current of back-to-back capacitor bank | 400A |
| Interrupter Weight(Approx.) | 2.96kg |
| Weight of movable parts | 1.28kg |
| Closing force due to bellow and atmosphere | 120±30N |
| Force required to hold contacts open at full stroke | 190±50N |
| Clearance between open contacts | 13±1mm |
| Average opening speed(average of first 75% of contact gap) | 1.35±0.2m/s |
| Average closing speed(average of last 30% of contact gap) | 0.8±0.2m/s |
| Rated added external contact final force | 1500±100N |
| Contact bouncing duration at closing operation | ≤2ms |
| Closing and Opening non-simultaneity of three-phase Contacts | ≤2ms |
| Maximum Rebound during opening | ≤2ms |
| Storage life | 20years |
| Mechanical endurance | 10000 Operations |
| Contacts limit erosion | 3mm |
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"
