About us

SZTT JSC is the largest Russian manufacturer of transformers with epoxy resin cast insulation. We have large production base equipped with modern equipment; more than 70 years of experience dealing with resin cast insulation and about 1000 qualified employees.

Our main products are:

- measuring current transformers of different types (support, bushing, bus-bar, indoor and outdoor etc.) in voltage class 0.6-35kV, with accuracy classes 0.2S; 0.2; 0.5; 0.5S; 5P; 10P and 2, 3, 4 or 5 secondary windings;

- measuring voltage transformers of different types (single and double poles, indoor and outdoor) in voltage classes 3-35kV, with accuracy classes 0.2; 0.5; 1; 3 and 1, 2 or 3 secondary windings;

- single phase distribution transformers (indoor and outdoor) with capacity 0.63-6kVA; voltage class 6 or 10 kV;

- triple phase distribution transformers with capacity 10-2500kVA; voltage class 6 or 10 kV; dry-type (cast resin insulation);

- laboratory transformers with accuracy class 0.1 or 0.05.

All our transformers are manufactured according to GOST standard. Our transformers are certified in Russian Federation, Ukraine, Byelorussia and Kazakhstan. We are open to certification of our products in your country or in any international certification agency.

Our company also have ISO 9001:2008 certificate (scope: designing, developing, manufacturing and supplying of measuring current and voltage transformers, power transformers and switchgears); ISO 14001:2004 (same scope) and OHSAS 18001:2007 certificates.

We are looking for long-term mutually beneficial relations. If you have interest in any of our products do not hesitate to contact us.