TRANSFORMERS

General information
Firm „Transformator servis” produces distribution transformers oil-immersed with power rating from 25 to 1000 kVA and tension 6-10/0,4 kV, transformers used to heat concrete and ground with power 63 kVA, dry transformers with epoxy insulation with power rating from 25 till 2500 kVA, and also makes renovation of the oil-immersed transformers with power rating from 25 till 2500 kVA.

Transformers according to norm GOST 11677-85 Power transformers. General technical requirement GOST 27050-86
Power transformers I-III overall dimension (power rating from 25 till 6300 kVA could be plugged in under tension 35 kV); technical and  climate conditions according to norm 1.1-31617591-001-2005. Power transformers oil-immersed with power rating from 25 till 1000 kVA

Working conditions:
1. Installation of the transformer is 1000 m. above sea level.
2. Air temperature from minus 45°С till plus 40°С

Brief description of transformers:
Distributions POWER TRANSFORMERS are produced with nominal tension in primary winding 6 or 10 kV. Nominal tension in secondary winding is 0,4 or 0,23 kV. Scheme and connection group of windings U/Un-0 or D/Un-11. On the customer demand it is possible to make transformers with different connection of the tensions and other construction solution. Regulating the tension is made as a result of moving the switch, by the transformer detached from the net both high (HV) and low (LV) tensions. The tension is being regulated on the side of HV for ±2x2,5% value from nominal value. Exterior introductions HV and LV are removable and passers-by are made from china insulators. At great current 1000 A and more on the hard core current are contact clamps screwed properly with the spatula which connecting the track or the cable attachment assures. The expandability of oil assures appropriate works of the transformer at different weather conditions and fluctuations of the temperature. The dehumidifier is installed to provide dry air in transformer. For measuring the temperature of upper layers of oil on the casing a thermometer is installed. Transformers with power rating from 400 to 1000 kVA are occupied with wells to install in base.

Specifications of power transformers