Capacitive Voltage Transformer ECF high voltage,
Voltage transformers type ECF are used in high voltage networks,
within the 72-550 kV range.
They transform high voltage into standardised values for meters,
measuring and protection devices.
Features
- Cost-effective and reliable Design for high and very high voltages
- Expandable for the transmission of high-frequency Signals (TFH)
- Fabrication-internal adjustment of the accuracy classes, no on-site adjustment is required
- Temperature- and accuracy stable over the entire service life
- Increased safety against relaxation oscillation due to damping unit
Technical data
Type ECF |
72 |
123 |
145 |
170 |
245 |
300 |
362 |
420 |
550 |
|
| Standard | IEC / IEEE | |||||||||
| Highest voltage for equipment | kV | 72.5 | 123 | 145 | 170 | 245 | 300 | 362 | 420 | 550 |
| Rated power-frequency withstand voltage | kV | 140 | 230 | 275 | 325 | 460 | 460 | 510 | 630 | 680 |
| Rated lightning impulse withstand voltage | kV | 325 | 550 | 650 | 750 | 1050 | 1050 | 1175 | 1425 | 1550 |
| Frequency | Hz | 50 / 60 | ||||||||
| Accuracy class | 0.1-3; 3P; 6P | |||||||||
| Rated thermal limiting output VT part | VA | ≤ 1000 | ||||||||
| Max. simultaneous burden (cl. 0.2) | VA | 150 | ||||||||
| Max. number of VT windings | 5 | |||||||||
Type ECF |
72 |
123 |
145 |
170 |
245 |
300 |
362 |
420 |
550 |
||
| Height of unit* | A | mm | 1660 | 1930 | 2130 | 2330 | 2930 | 3310 | 3510 | 4310 | 5110 |
| Height to primary terminal* | B | mm | 1520 | 1790 | 1990 | 2190 | 2790 | 3170 | 3370 | 4170 | 4970 |
| Depth of unit including terminal box | C | mm | 746 | 746 | 746 | 746 | 746 | 746 | 746 | 746 | 746 |
| Depth of unit base | D | mm | 500 | 500 | 500 | 500 | 500 | 500 | 500 | 500 | 500 |
| Width of unit base | E | mm | 500 | 500 | 500 | 500 | 500 | 500 | 500 | 500 | 500 |
| Distance between screw holes at base | F | mm | 450 | 450 | 450 | 450 | 450 | 450 | 450 | 450 | 450 |
| Min. creepage distance* | mm | 2420 | 3540 | 4280 | 5030 | 7260 | 7820 | 8560 | 11540 | 14520 | |
| Approximate weight* | kg | 280 | 300 | 320 | 340 | 400 | 420 | 450 | 500 | 540 |
