US 7,003,412 B2 · Method and system for verifying voltage in an electrical system

Abstract

A system operable to detect voltages within an electrical device and provide an output based on the voltages detected by the system. The electrical device may include an isolation switch adapted to selectively isolate the electrical device from an electrical bus. The system may be operable to detect voltage data in the electrical bus and the electrical device downstream of the isolation switch. The system may provide an indication that voltage is detected in the electrical bus, but that no hazardous voltages are detected within the electrical device downstream of the isolation switch. The system may be adapted to produce a plurality of outputs based on the voltage data detected on the electrical bus and in the electrical device downstream of the isolation switch.

Claims34

Dependent claims

A voltage verification system for an electrical system, comprising:

a processor unit coupleable to a voltage detection system in an electrical enclosure, the voltage detection system configured to detect a first voltage input to the enclosure and a second voltage at a point within the enclosure, wherein at least one of the voltage detection system and the processor unit is operable to convert the first and second voltages detected by the voltage detection system into digital signals, the processor unit being operable to provide an output derived from a truth table such that a first signal is provided for opening the enclosure only if the first voltage is substantially non-zero and the second voltage is substantially zero.

Dependencies are inferred from the claim text.

Method and system for verifying voltage in an electrical system

Life of this patent

Method and system for verifying voltage in an electrical system

Life of this patent

Abstract

Claims34