High voltage presence check service and manufacturing tool having positive self verification

摘要

The present invention provides a novel method to perform high voltage presence checks using two independent contacts per high voilage polarity to enable measurement contact assurance. In the design, manufacturing, and servicing of high voltage energy storage systems, it is imperative that highly reliable high voltage measurements can be made as to ensure high voltage safety. Today, manual live-dead-live measurements are employed to check for high voltage presence before handling. However, manual tive-dead-livc measurements require the operator to make proper contact with the high voltage source without a diagnosable feedback, since the lack of high voltage appears the same as no contact on a voltmeter readout. The risk for an improper high voltage terminal measurement is exacerbated by high voltage (Cat. III) probes and connectors having shielded terminals that make it difficult to consistently achieve proper contact.