COLD TRAPS - Why Use One?
Collects, by freezing, the water removed during the vacuum drying of high voltage equipment such as transformers.
Water is an enemy to the dielectric properties of the solid and liquid insulation in electrical devices. Therefore, it needs to be removed during the manufacturing process and then in the field as part of maintenance.
Vacuum technology is the method of choice for effective removal of water from a transformer. Collecting it by freezing provides major benefits.
Two types of traps have been utilized to achieve and maintain the necessary temperatures needed.