EJOF — oil-paper combined current and voltage transformer, 24–170 kV
EJOF combined instrument transformer with oil-paper insulation for outdoor substations of 24–170 kV, primary current up to 5000 A. The CT is located in the head and the VT in the lower tank.
- Rated voltage
- 24–170 kV
- Primary current
- up to 5000 A
- Short-time thermal current
- up to 63 kA / 1 s
- CT accuracy classes
- 0.1–3; 0.2S; 0.5S; P; PR; PX; TPX; TPY; TPZ
Price, availability and lead time on request. We help with analogue selection, customs clearance and delivery.
Description
The unit replaces separate CTs and VTs and saves space in the outdoor switchyard. Short-time thermal current up to 63 kA for 1 s. Up to 7 CT windings and up to 5 VT windings. CT accuracy classes 0.1–3, 0.2S, 0.5S, P, PR, PX, TPX, TPY and TPZ; VT classes 0.1–3, 3P and 6P. So the unit supplies signals for metering and for protection.
Technical specifications
| Rated voltage | 24–170 kV |
|---|---|
| Primary current | up to 5000 A |
| Short-time thermal current | up to 63 kA / 1 s |
| CT accuracy classes | 0.1–3; 0.2S; 0.5S; P; PR; PX; TPX; TPY; TPZ |
| VT accuracy classes | 0.1–3; 3P; 6P |
| Windings | up to 7 CT windings, up to 5 VT windings |
| Insulation | oil-paper |
Replacement for
no direct analog (combined CT + VT units were not produced in series); pairs ТФЗМ-110Б + НАМИ-110, ТОЛ-35 + ЗНОМ-35
selected by purpose and main parameters, please confirm with our manager
Request a price and lead time
EJOF — oil-paper combined current and voltage transformer, 24–170 kV. We reply within one business day.
Or email sales@usk.ua or call 044 339-50-20.
Customs codes
| UKTZED (Ukraine) | 8504 31 21 00 8504 31 29 00 |
|---|---|
| HS, 6 digits | 8504 31 |
| CN (EU) | 8504 31 21 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
What does the combined EJOF offer compared with separate CTs and VTs?
It replaces separate CTs and VTs and saves space in the outdoor switchyard. The CT is located in the head and the VT in the lower tank.
What voltage and current is the EJOF rated for?
Rated voltage 24–170 kV, primary current up to 5000 A, thermal withstand up to 63 kA / 1 s.
Are there classes for revenue metering?
Yes, the CT is available in classes 0.2S and 0.5S, as well as 0.1–3 and the protection classes P, PR, PX, TPX, TPY, TPZ.
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