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4–4 EPM 6000 MULTI-FUNCTION POWER METERING SYSTEM – USER GUIDE
CHAPTER 4: USING THE METER
4.1.5 Watt-Hour Accuracy Testing (Verification)
To be certified for revenue metering, power providers and utility companies have to verify
that the billing energy meter will perform to the stated accuracy. To confirm the meter's
performance and calibration, power providers use field test standards to ensure that the
unit's energy measurements are correct. Since the EPM 6000 is a traceable revenue meter,
it contains a utility grade test pulse that can be used to gate an accuracy standard. This is
an essential feature required of all billing grade meters.
FIGURE 4–3: Using the Watt-Hour Test Probe
The following table lists the watt-hour pulse constants for accuracy testing.
Table 4–2: EPM 6000 Accuracy Test Constants
Voltage Level Class 10 Models Class 2 Models
Below 150 V 0.2505759630 0.0501151926
Above 150 V 1.0023038521 0.2004607704