Product Introduction - Radian RD-30 Operation Manual

Product Intoduction
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Product Introduction

The RD-30 Portable Three-phase Electricity Standard utilizes a lightweight, compact package
while providing a high level of accuracy through design innovations. The RD-30 has a typical
accuracy of 0.01% and a maximum worst case accuracy specification of 0.04%. This specification
includes variables of stability, temperature, power factor, traceability uncertainty, and test system
errors. In addition, this accuracy applies across the entire voltage and current operating range of
the product for an entire year.
The RD-30 utilizes Radian's new Dytronic measurement technology consisting of a Radian
designed Integrating Analog to Digital Signal Converter. The RD-30's Dytronic A/D Converter
is combined with Radian's renowned electronically compensated voltage and current input
transformers and a hermetically sealed reference set to provide the highest degree of accuracy,
stability and versatility offered in a portable three-phase electricity standard.
The RD-30 provides four quadrant three-phase simultaneous measurements for active, reactive,
and apparent energy and power with forward and reverse energy flow also measured. The
potential input, current input and auxiliary power input are totally autoranging. This autoranging
feature was pioneered by Radian Research and makes it impossible to damage the unit by applying
a signal to the wrong tap. The potential input range is 30 to 630 volts, the current input range is
available as either 120 amps or 200 amps per phase. The auxiliary power ranges from 60 to 630
volts.
In the field, the RD-30 can be used with a controlled current load, or it can be used with clamp-on
current transformers available from Radian Research to perform customer load tests. In this field
application, the optional power analysis capability can analyze customer load through the 204
th
harmonic order. In addition, for improved efficiency, the RD-30 optionally can automatically
calculate and display the error of the meter under test.
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RD-30 Operations Manual