Oil-filled current and voltage transformers OSKF, OTEF, KOTEF up to 800 kV
Oil-filled current transformers, voltage transformers and combined units for voltages up to 800 kV. They serve metering and protective relaying in high and extra-high voltage networks.
- OSKF
- oil-filled current transformers up to 800 kV, design service life 30 years
- OTEF
- oil-filled voltage transformers 72.5–420 kV (BIL 350–1425 kV)
- KOTEF
- combined current and voltage transformer built from OSKF and OTEF components
- Standards
- IEC 61869-1/-3, ANSI
Price, availability and lead time on request. We help with analogue selection, customs clearance and delivery.
Description
OSKF current transformers are produced for voltages up to 800 kV, with a design service life of 30 years. OTEF voltage transformers are rated for 72.5–420 kV at BIL 350–1425 kV. KOTEF combines a current and a voltage transformer in one unit, built from OSKF and OTEF components. The units comply with IEC 61869-1/-3 and ANSI. The complete instrument transformer portfolio covers the range from 600 V to 1200 kV.
Technical specifications
| OSKF | oil-filled current transformers up to 800 kV, design service life 30 years |
|---|---|
| OTEF | oil-filled voltage transformers 72.5–420 kV (BIL 350–1425 kV) |
| KOTEF | combined current and voltage transformer built from OSKF and OTEF components |
| Standards | IEC 61869-1/-3, ANSI |
| Portfolio range | 600 V to 1200 kV |
Replacement for
ТФЗМ-110Б, ТФЗМ-220Б, ТФУМ-330, ТФРМ-500, ТФРМ-750; НКФ-110-58, НАМИ-110, НКФ-220-58, НКФ-500
selected by purpose and main parameters, please confirm with our manager
Request a price and lead time
Oil-filled current and voltage transformers OSKF, OTEF, KOTEF up to 800 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 voltage are OSKF current transformers rated for?
Up to 800 kV, with a design service life of 30 years.
What voltage class do OTEF voltage transformers cover?
OTEF units are rated for 72.5–420 kV with BIL 350–1425 kV.
Which standards do the transformers comply with?
They comply with IEC 61869-1/-3 and ANSI.
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