Pressure Relief Device Transformer

Mechanical device for relief of excessive pressure buildup in large volumes of gas or fluid.
Pressure relief device transformer. Pressure relief device for power transformers sudden and violent short circuits inside the oil cooled transformer s metal tanks instantly generate an enormous amount of gas which causes a substantial increase in internal pressure. An internal fault in an oil filled transformer is usually accompanied by overpressure in the transformer tank. The surge of oil caused by a heavy internal fault bursts the disk and allows the oil to discharge rapidly. The prd allows rapid release of excessive pressure that may be generated in the event of a serious fault.
It is fitted on the top of the main tank. The relay will ignore normal pressure changes such as oil pump surges temperature changes etc. Pressure relief device a flashover or short circuit in a liquid filled transformer is usually accompanied by overpressure in the tank due to gas being formed by the decomposition and evaporation of the oil. Patented dual gasket system provides quick response time and automatically reseals after pressure has subsided.
Qualitrol lprd 208 213 216 large pressure relief device mechanical device for relief of excessive pressure buildup in large volumes of gas or fluid. The control circuit should de energize the transformer and provide an alarm. The relay is designed to detect a sudden pressure increase caused by arcing.