GE Multilin EPM 6000 Instruction Manual page 23

CHAPTER 2: ELECTRICAL BACKGROUND
EPM 6000 MULTI-FUNCTION POWER METERING SYSTEM – USER GUIDE
80
70
60
50
40
30
20
10
0
1 2 3
The data in the above figure is reproduced in the following table to illustrate the
calculation of energy. Since the time increment of the measurement is one minute, and
since we specified a constant load over that minute, the power reading can be converted
to an equivalent consumed energy reading by multiplying the power reading by 1/60
(converting the time base from minutes to hours).
4 5 6 7 8 9
Time (minutes)
FIGURE 2–7: Power Use Over Time
10 11 12 13 14 15
2–9