Oil purification Service OLTC

The arcing which occurs in the Diverter Switch or Selector Switch compartment of OILTAP® (OLTC which is switching in oil) during each normal switching operation leads to carbonization of the OLTC oil. Therefore the insulating oils in the OLTC compartment are to be monitored by the end-users in accordance with the relevant rules and regulations. In case of the dielectric strength value of oil is fallen below standard values for OLTC oil monitoring which is given by OLTC manufacturer, the oil shall be treated by high-vacuum oil purification or replaced.