10 · 20 · 35 kV
Current transformers for 10, 20 and 35 kV
For measuring alternating currents from 10 to 4000 A, for installation in indoor distribution boards and switchgear.
Operating conditions
- Ambient temperature−25 to +40 °C
- Altitudeup to 1000 m
- Climatenormal or tropical climate versions
Versions
- post and bushing types;
- multi-turn and single-turn;
- with and without their own primary winding;
- with one or more secondary windings.
The active part is cast in epoxy compound, which serves both as insulation between the primary and secondary windings and as external insulation. The transformers meet the requirements of BDS EN 60044-1 and are made in normal and tropical versions.
Types
- TKS-12post type; range 10 to 800 A
- TKS-24post type; range 10 to 800 A
- TKS-12, 24with ratio switching
- TKN-24bushing type; range 20 to 1200 A
- TKEA-12bushing type; range 800 to 4000 A
- TKEA-24bushing type; range 800 to 4000 A
ZAVN-Dobrich AD can make these designs with other technical parameters (accuracy class, rated primary current, rated secondary current and so on) to BDS, IEC and GOST, to the client's order.
The type-approval certificates of TKS-12 and TKS-24 are on the Documents page.
The other products
- Packaged transformer substations (MKTP and BKTP)7.2, 12 and 24 kV, with ABB, Siemens and Schneider apparatus
- Switchgear assemblieswith minimum-oil, SF₆ and vacuum circuit breakers, 7.2, 12, 24 kV
- Low-voltage switchboards0.4 kV, to BDS EN 60439
- Indoor current transformers0.5 kV, up to 3000 A
- Medium-voltage voltage transformersNK series, for 6, 6.3, 10, 15 and 20 kV
- Epoxy insulators0.66, 7.2, 12 and 24 kV, and epoxy parts to the client's drawings
- High-power fuses type VPm7.2, 12 and 24 kV, current-limiting
- Retrofit and rehabilitation of MV switchgear breakersreplacing minimum-oil breakers with vacuum and SF₆ ones