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VP-2040 Enhanced IED
V-PM2000 Series, Veesta Power Measurement
Instructions & User's Manual
4.3
Demand Parameters
The computation is updated when
each computing intervals ends
15 minutes
computing interval
15
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Demand refers to the value obtained in the following way: the
accumulated electrical parameters within a period of time divided by
the time length. To facilitate the operation of the user, VP-2040
adopts the fixed-block calculation method in the fixed period of time,
and the period of time is fixed, being 15 minutes.
VP-2040 provides the following demand data and measuring ranges:
Table 4-2: VP-2040 Demand Parameters
Demand Reading
Demand Current
Three-phase average value
Maximum peak
Active Power / Reactive Power / Apparent Power
Three-phase average value
Maximum peak
The figure below describes demand calculation:
15 minutes
computing interval
Fixed blocks
30
Figure 4-2: VP-2040 Power Factor Symbols
Chapter 4 - Measuring Capability
Measuring Range
0 – 50,000 A
0 – 50,000 A
0 - ± 100 MW / Var / VA
0 - ± 100 MW / Var / VA
The demand value is the
average value when the
last computing intervals
end.
15 minutes
computing interval
45
Time (minutes)
Page 24 of 100
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