Chapter 4—Metering Capabilities 63230-300-212
Demand Readings April 2001
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58
Figure 4–3: Block Interval Demand Examples
Time
(min)
Calculation updates
at the end of the interval
Demand value
is the average
for last
completed
interval
Fixed Block
Sliding Block
15-minute interval
15-minute interval15-minute interval 15-min
Time
(sec)
Calculation updates
every 15 or
60 seconds
1530 45
15 30 45
60 . . .
Demand value is
the average for
the last completed
interval
15 30 45
20 35 4025
Rolling Block
15-minute interval
Time
(min)
Calculation updates at
the end of the subinterval (5 min.)
Demand value
is the average
for last
completed
interval