L TYPE
- Integrated drive mechanism.
- Designed for 5 Lakh operations.
- No barrier board required.
- No huge sealing area required, hence leak free.
- Transformer size becomes very slim.
- No conservator required and hence no piping costs.
- Between 50,000 operations, no maintenance is needed.
- Total freedom from menace of barrier board related problem.
- Only half an hour time required for the inspection of OLTC.
| Electrical parameters | ||||||||
| TYPE | Current Rating (A) | Voltage Variants | BIL kV/kVp | Max. Rated Step Voltage (Volts) | Max. Operating Position | |||
| Single Pole | Voltage Level (kV) | Vector | Linear | Pre-Selector | ||||
| L-Type | 200 | 11, 22 & 33 | Y,D | 80/250 | 825 | 9 | 17 | |
DRY VACUUM TYPE (DVac)
- The DVac has a maximum rated through-current of 500A and a max. rated step voltage of 900V for linear voltage adjustment in nine to seventeen operating positions.
- Each DVac module contains a tap selector and diverter switch for high-speed resistor type tap change operation in a compact design.
- The movable tap selector contact system and the diverter switch, with the spring-energy accumulator are driven by a screw spindle.
- Vacuum Interrupters are used as the switching elements which guarantees maintenance free operation and prolonged life
| Electrical parameters | ||||||||
| TYPE | Current Rating (A) | Voltage Variants | BIL kV/kVp | Max. Rated Step Voltage (Volts) | Max. Operating Position | |||
| Single Pole | Three Pole | Single Pole | Voltage Level (kV) | Linear | ||||
| D-Vac | 200, 300 & 500 | 200, 300 & 500 | 11 | Y, D | 85/200 | 900 | 17 | |
| 33 | Y, D | 900 | ||||||