Inductive Voltage Transformer EGF high voltage,
Voltage transformers type EGF are used in high voltage substations within the 245-550 kV range.
They transform high voltage into standardised,
equivalent values for meters, measuring and protection devices.
Technical data
Type EGF |
245 | 300 | 330 | 362 | 420 | 550 | |
| Standard | IEC / IEEE | ||||||
| Highest voltage for equipment | kV | 245 | 300 | 330 | 363 | 420 | 550 |
| Rated power-frequency withstand voltage | kV | 460 | 460 | 460 | 575 | 630 | 680 |
| Rated lightning impulse withstand voltage | kV | 1050 | 1050 | 1175 | 1175 | 1425 | 1550 |
| Frequency | Hz | 50 / 60 | |||||
| Accuracy class | 0.1-3; 3P; 6P | ||||||
| Rated thermal limiting output VT part | VA | ≤ 3000 | |||||
| Max. simultaneous burden (cl. 0.2) | VA | ≤ 300 | |||||
| Max. number windings | 5 | ||||||
| Nominal operating / transport overpressure (20°C) | bar | 4 / 0.5 | |||||
Type EGF |
245 |
300 | 330 | 362 | 420 | 550 | ||
| Height of unit* | A | mm | 3930 | 3930 | 4993 | 4993 | 5353 | 6183 |
| Height to primary terminal* | B | mm | 3905 | 3905 | 4968 | 4968 | 5328 | 6153 |
| Depth of unit including terminal box | C | mm | 1052 | 1052 | 1293 | 1293 | 1293 | 1293 |
| Depth of unit base | D | mm | 730 | 730 | 1075 | 1075 | 1075 | 1075 |
| Width of unit base | E | mm | 730 | 730 | 1075 | 1075 | 1075 | 1075 |
| Distance between screw holes at base | F | mm | 600 | 600 | 900 | 900 | 900 | 900 |
| Min. creepage distance* | mm | 6700 | 7500 | 8250 | 9050 | 10500 | 13759 | |
| Gross weight, approx. * | kg | 670 | 670 | 805 | 805 | 820 | 850 | |
| Gas weight, approx. * | kg | 21 | 21 | 34 | 34 | 36 | 39 |
