THREE-PHASE REFERENCE STANDARD RD-31 THREE-PHASE REFERENCE STANDARD Typical Accuracy: ±0.01% @ PF=1 Worst Case Accuracy: ±0.02% @ PF≥0.

INTRODUCTION The RD-31 three-phase reference standard is one of the most versatile reference instruments ever. The RD-31 has a typical accuracy of ±0.01% @ PF=1 for all measurement functions across its entire operating range, with a maximum worst case accuracy of ±0.02%. This worst case accuracy specification includes the variables of stability, power factor, traceability uncertainty and test system errors. A unique design makes the RD-31 unsurpassed in its ability to accurately measure "real world" waveforms. The RD-31 reference meter includes an exclusive analog to digital signal converter...