CHAPTER 6: USING THE METER % OF LOAD BAR
EPM 2200 POWER METER – INSTRUCTION MANUAL 6–15
Note
Readings or groups of readings are skipped if not applicable to the meter type or hookup,
or if explicitly disabled in the programmable settings.
6.2 % of Load Bar
The 10-segment LED bargraph at the bottom of the EPM 2200 unit display provides a
graphic representation of Amps. The segments light according to the load in the %Load
Segment Table below.
When the Load is over 120% of Full Load, all segments flash “On” (1.5 secs) and “Off” (0.5
secs).
6.3 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 2200 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.
Table 6–2: % Load Segments
Segments Load ≤ % Full Load
None No Load
11%
1 - 2 15%
1 - 3 30%
1 - 4 45%
1 - 5 60%
1 - 6 72%
1 - 7 84%
1 - 8 96%
1 - 9 108%
1 - 10 120%
All Blink >120%
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