GE EPM 5300, EPM 5200, EPM 5350 instruction manual Formulas

GE Consumer & Industrial

Multilin

EPM 5300 Series Meters

Chapter 10: Programming

Group 1 – Voltage,

Amp And Watt

Scale Settings

The EPM 5300P and 5200P full scales will already be programmed if the order specified current and voltage transformer ratios. The meter label indicates any full scale setup.

Programming Group 1 contains voltage, amperage and full scale power selection, along with scale factor selection and decimal point placement.

The user can re-scale without removing the EPM 5300P for calibration. The 5300P has been calibrated at standard levels in GROUP 2. Mathematically convert any full scale ratios to those calibrated levels. If a different current or voltage transformer is used, program the primary value of its ratio. If necessary, convert the ratio to a secondary value of five amps standard current (1 amp is a special order) and 120V or 75V nominal voltage (options L only).

Formulas:

Primary x 120V Primary x 75V Primary x 5A

Secondary Secondary Secondary

It may be necessary to convert the full scale to a larger unit. There is a resolution limitation for all full scales of 2000. If a display reading exceeds 2000, it may be unstable and subject to zeroing problems.

Example: The full scale for a CT ratio of 3000/5 should be 03.00 kA.

When changing a PT or CT full scale, calculate the new watts full scale and make any necessary changes. The watts full scale will not auto range.

EPM 5300 SERIES ADVANCED POWER METERS – INSTRUCTION MANUAL 10–73