JOF — oil-paper outdoor current transformer, 24–550 kV
JOF outdoor current transformer with oil-paper insulation and the active part in the head, for 24–550 kV networks. Primary current up to 4000 A, frequency 16.7, 50 or 60 Hz.
- Rated voltage
- 24–550 kV
- Primary current
- up to 4000 A
- Secondary current
- 1 / 5 A
- Short-time thermal current
- up to 63 kA / 1 s
Price, availability and lead time on request. We help with analogue selection, customs clearance and delivery.
Description
Temperature-related changes in oil volume are compensated by a stainless steel bellows. The transformation ratio is switched on the primary side in the ratio 1:2 or 1:2:4. Secondary current 1 or 5 A, up to 7 secondary windings, accuracy classes 0.1–3, 0.2S, 0.5S, P, PR, PX, TPX, TPY, TPZ. Short-time thermal current up to 63 kA for 1 s, dynamic current up to 160 kA. Porcelain or polymer insulator, design to IEC or IEEE.
Technical specifications
| Rated voltage | 24–550 kV |
|---|---|
| Primary current | up to 4000 A |
| Secondary current | 1 / 5 A |
| Short-time thermal current | up to 63 kA / 1 s |
| Dynamic withstand current | up to 160 kA |
| Accuracy classes | 0.1–3; 0.2S; 0.5S; P; PR; PX; TPX; TPY; TPZ |
| Number of secondary windings | up to 7 |
| Insulation | oil-paper, porcelain or polymer insulator |
| Frequency | 16.7 / 50 / 60 Hz |
| Standards | IEC / IEEE |
Replacement for
ТОЛ-35, ТФЗМ-35А, ТФЗМ-110Б, ТФЗМ-220Б, ТФУМ-330, ТФРМ-500 (oil-filled)
selected by purpose and main parameters, please confirm with our manager
Request a price and lead time
JOF — oil-paper outdoor current transformer, 24–550 kV. We reply within one business day.
Or email sales@usk.ua or call 044 339-50-20.
Customs codes
| UKTZED (Ukraine) | 8504 31 29 00 |
|---|---|
| HS, 6 digits | 8504 31 |
| CN (EU) | 8504 31 29 |
| HTSUS (USA) | 8504 31 20 00 |
| China customs tariff | 8504 31 10 00 |
Codes are for reference: the final code is determined at declaration for the specific model.
Questions and answers
Can the transformation ratio of the JOF be changed?
Yes, by switching on the primary side in the ratio 1:2 or 1:2:4.
What voltage and frequency is the JOF built for?
For 24–550 kV networks at 16.7, 50 or 60 Hz. Primary current up to 4000 A.
Which insulator can be ordered?
Porcelain or polymer; the active part has oil-paper insulation.
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