Specifications

63230-507-201A1 Power Meter 750
03/2007 Appendix B—Register List
© 2007 Schneider Electric All Rights Reserved
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When the power factor is lagging, the power meter returns a high negative
value—for example, -31,794. This happens because bit 15=1 (for example,
the binary equivalent of -31,794 is 1000001111001110). To get a value in
the range 0 to 1,000, you need to mask bit 15. You do this by adding 32,768
to the value. An example will help clarify.
Assume that you read a power factor value of -31,794. Convert this to a
power factor in the range 0 to 1.000, as follows:
-31,794 + 32,768 = 974
974/1,000 = .974 lagging power factor