Choosing the current range
Set the current range based on your expectation of the maximum load current that
will flow during the measurement period. (Select an appropriate range based on fac-
tors such as the operating state, rated load, and breaker rating.) When the range is
too low, an over-range event will occur during measurement, preventing accurate
measurement. When the range is too high, the magnitude of the error component
will increase, preventing accurate measurement.
* Effective measurement range: 5% to 110% of range
Display range: 0.4% to 130% of range
55 A (110%f.s.) 11 A (110%f.s.)
0 A 0 A
50 A range 10 A range
Over-range
Example
Effective
measurement range*
(Guaranteed accura-
cy range)
65 A (130%f.s.)
Display range
13 A (130%f.s.)