Orthomagnetic Current Transformers for Laboratory and Factory Testing

The orthomagnetic current transformer provides a means of current measurement with an inherent accuracy beyond the calibration of transfer standards. Correction of readings is eliminated over a primary current range of approximately 60 to 1 on normal metering burdens without adjustment of compensation. This wide current range may be metered without recourse to high-voltage heavy-current primary switches. With the exception of the 180-cycle excitation, these transformers are complete with simplified compensation in a single tank.