Primary winding
Max. 3.3kVSecondary winding
Max. 3.3kVPower
6.3 ... 630kVAIsolation voltage
4kV ACFrequency
50/60HzProtection class
IP00 ... IP65Insulation class
T60/HAmbient temperature
-20 ... +60°CSingle-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 |