Power metering module

A metering module for use in a power circuit monitoring system including a circuit monitor having a processor for processing data related to power signals, said metering module comprising:

• at least one sensor for sensing a predetermined property of a power signal and for producing a corresponding sensor signal;
• and
• a modular metering circuit for producing data corresponding to said sensor signal for input into said circuit monitor;
• wherein said metering module is separately housed, detachable and replaceable relative to said circuit monitor to permit one or more of testing, calibration and repair of said metering module independently of said circuit monitor.

A power monitoring method comprising:

• processing data related to power signals at a circuit monitor;
• and
• a metering module comprising:
• sensing a predetermined property of a power signal and for producing a corresponding sensor signal;
• and
• producing data corresponding to said sensor signal for input into said circuit monitor;
• and
• separately housing, detaching and replacing said metering module relative to said circuit monitor to permit one or more of testing, calibration and repair of said metering module independently of said circuit monitor.

A method of metering for use in a power circuit monitoring system including a circuit monitor having a processor for processing data related to power signals, said metering method comprising:

• sensing a predetermined property of a power signal and for producing a corresponding sensor signal;
• and
• producing data corresponding to said sensor signal for input into said circuit monitor;
• and
• separately housing, detaching and replacing said metering module relative to said circuit monitor to permit one or more of testing, calibration and repair of said metering module independently of said circuit monitor.