TAP SWITCH FOR FREQUENCY RESPONSE AND PARTIAL DISCHARGE MEASUREMENT

摘要

A system and method for conducting diagnostic services on live electrical equipment, such as electrical power transformers (20) using a tap switch (10) installed into each phase of the transformer (20). The tap switch (10) is used along with the appropriate test and measurement equipment (60) connected to a test and measurement system (40) to perform the diagnostic service when the transformer (20) is live and in-service. The tap switch(10) allows the diagnostic service to be performed without the hazard of disconnecting the bushing tap(21) in order to connect the bushing tap(21) back to the test and measurement equipment (60). The tap switch (10) provides for live diagnostic tests and measurements for the early identification of potential failures using diagnostic services, such as partial discharge and frequency response. Thus, live diagnostics can be performed on electrical power transformers (20) while the transformers (20) are in service using a tap switch (10) resulting in a reduction in down time and thus costs.