Heat dissipation is very low in low voltage transformers.
Paper insulation in power transformers.
Since the need for high voltage electrical transformers there has been a need for an insulating material that could withstand the high electrical and physical stresses experienced around a core and windings.
The ac breakdown.
Our paper is made from extremely clean pulp with unique insulation.
Insulation paper for power transformers ahlstrom munksjö offers electric insulating kraft paper for power transformers in plain and creped paper produced in customized widths.
In low voltage transformer for example transformers used in the range of 12 1000v or low power rating transformers there is no need of insulating oil in such transformers.
Ahlstrom munksjö is a world leading producer of electrotechnical paper.
Our insulation paper is made from pure cellulose which has excellent mechanical strength oil absorption and electrical resistance.
Its high chemical purity means it is an extremely good insulation material for electrical machines impregnated with resin capacitors impregnated with oil or resin and particularly oil filled transformers.
The use of paper board as electrical insulation paper started in the early mid 20th century.