Inductive Current Transformer JOF T high voltage,
Current transformers type JOF T are used in high voltage networks,
within the 24-72 kV range.
They transform high voltage into standardised values for meters,
measuring and protection devices.
Features
- Oil-paper insulated
- Simple primary winding changeover
- Robust design
- Earthquake-resistant
- Low center of gravity
Technical data
Type JOF T |
24 |
36 |
52 |
72 |
|
| Standard | IEC / IEEE | ||||
| Highest voltage for equipment | kV | 24 | 36 | 52 | 72.5 |
| Rated power-frequency withstand voltage | kV | 50 | 70 | 95 | 140 |
| Rated lightning impulse withstand voltage | kV | 125 | 170 | 250 | 325 |
| Frequency | Hz | 16.7 / 50 / 60 | |||
| Primary rated current | A | ≤ 2000 | |||
| Secondary rated current | A | 1 / 5 | |||
| Rated short-time thermal current [Ith] | kA / 1s | ≤ 40 | |||
| Rated dynamic current [ldyn] | kA | ≤ 100 | |||
| Accuracy class | 0.1-3; 0.2S; 0.5S; P; PR; PX; PXR; TPX; TPY; TPZ | ||||
| Max. number of CT cores | 7 | ||||
Type JOF |
24 |
36 |
52 |
72 |
||
| Height of unit* | A | mm | 1386 | 1386 | 1580 | 1580 |
| Height to primary terminal* | B | mm | 1221 | 1221 | 1416 | 1416 |
| Depth of unit including terminal box | C | mm | 668 | 668 | 668 | 668 |
| Depth of unit base | D | mm | 361 | 361 | 361 | 361 |
| Width of unit base | E | mm | 360 | 360 | 360 | 360 |
| Distance between screw holes at base | F | mm | 310 | 310 | 310 | 310 |
| Min. creepage distance* | mm | 900 | 900 | 1813 | 1813 | |
| Approximate weight* | kg | 200 | 200 | 230 | 230 |
