The P-5000 provides eight self-contained primary ranges from 5 to 100 amperes. These ranges are brought out to binding posts on the top of the transformer. A 240 turn secondary is provided for use with these primary taps; other secondary taps are provided for other ranges as described below. Ranges above 100 amperes are obtained by passing a primary conductor through the transformer window. Various primary ranges are obtainable by varying the number of through-turns and choosing from among the available secondary taps. These ranges are: 125, 150, 200, 240, 250, 300, 375, 400, 500, 600, 625, 750, 800, 1000, 1200, 1250, 1500, 2000, 2500, 3000, 4000, and 5000A.

These transformers, like other Knopp Precision Multirange Transformers, has excellent ratio and phase angle characteristics with respect to both inter-range accuracy and overall accuracy. This is made possible through a properly engineered design and through exclusive, highly perfected compensating and winding methods.

The transformer is designed and compensated for the highest possible accuracy at the burden specified by the purchaser, but also may be used with excellent results with other burdens up to 25 volt-amperes. When used with the burden for which compensated, the ratio of this transformer standard is well within ±0.02% and the pase angle is well within 2 minutes on all ranges.

A Report of Calibration, traceable to the National Institute of Standards and Technology (NIST) is included with these transformers.