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EPM 5300 SERIES ADVANCED POWER METERS – INSTRUCTION MANUAL 10–73
EPM 5300 Series Meters
Chapter 10: Programming
Group 1 – Voltage,
Amp And Watt
Scale Settings
GE Consumer & Industrial
Multilin
Programming Group 1 – Voltage , Amp And Watt Scale Setti ngs
Note
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:
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.
Vx 120
Secondary
Primary
75Vx
Secondary
Primary
5Ax
Secondary
Primary