Primary winding

Max. 3.3kV

Secondary winding

Max. 3.3kV

Isolation voltage

4kV AC

Frequency

50/60Hz

Protection class

IP00 ... IP65

Insulation class

T60/H

Ambient temperature

-20 ... +60°C

Single-phase power transformers

Power transformers

We have been engaged in long-term development of transformers for decades, both with our customers and co-operative groups drafting international industry standards. At the same time, we have continuously improved our own production methods and processes in order to meet the requirements of our customers also in special circumstances.

Our selection includes single- and three-phase dry insulated power transformers and electrostatically shielded transformers for industrial, military, hospital and marine use. The features, dimensions, structure and mounting options of the transformers are tailored according to the customer’s objectives and needs.

Single-phase power transformers

We manufacture single-phase transformers in the power range 6.3 to 630 kVA. Our selection includes the Power Series and electrostatically shielded transformers.

The standard structure is open frame IP00, but the transformers are available up to IP65.

The transformers are intended for applications which require voltage increases or decreases or in which the transformer is used as an isolation transformer. If the voltage change does not require isolation, the solution might be an auto-transformer, which is smaller in size and more cost-efficient. The transformers are used in different kinds of industrial, construction, energy technology and marine applications, such as electric motors, compressors, cooling systems or IT/TN-S network formation. On request, transformers can be manufactured for different voltages and frequencies, and equipped with e.g. an electrostatic shield between the primary and secondary windings, different settings, intermediate outputs, casters or other accessories requested by the customer.

Product name Primary winding Secondary winding Power Isolation voltage Frequency Protection class Insulation class Ambient temperature Standards Accessory
Single-phase power transformers Max. 3.3kV Max. 3.3kV 6.3 ... 630kVA 4kV AC 50/60Hz IP00 ... IP65 T60/H -20 ... +60°C IEC60076/IEC726 (if required, also other standards: DNV, LRS…) Switches, safeguards, switching current attenuation circuits, insulation level monitoring relays
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