User's Manual

ANSI Electric Meter v3.1 User’s Guide 65
Up to 16 channels can be recorded on the same interval. The 16 channels are selected
from the measured electrical values, which are listed in the “Energy Measurements
and Calculations” section on page 1. All channels are stored as total values (no
differential values).
The number of storage days available in the load profile register depends on the
meter channel and log interval configuration, as well as the memory available to the
load profile log. The following table shows the maximum number of days of profile log
capacity for the log interval and channel selections for log sizes of 22.5Kb, and
approximately 47Kb. When the number of maximum days is reached, the log becomes
full and wraps around to overwrite previous entries. The log intervals shown below
are for 5, 15, 30, 60 minutes and 1 day. Other interval lengths are supported,
although all interval lengths for ANSI meters must be in minutes. If you are using
another interval length, you can use the figures below to estimate how many storage
days will be available in the load profile register.
Load Profile Storage – 22.5Kb Log Size Load Profile Storage – 47.25Kb Log Size
Number of
Channels
Log Interval Maximum
Days
Number of
Channels
Log Interval Maximum Days
1 1 day 2094 1 1 day 4398
1 60 minutes 180 1 60 minutes 378
1 30 minutes 91 1 30 minutes 192
1 15 minutes 46 1 15 minutes 97
1 5 minutes 15 1 5 minutes 32
2 1 day 1440 2 1 day 3024
2 60 minutes 92 2 60 minutes 195
2 30 minutes 46 2 30 minutes 98
2 15 minutes 23 2 15 minutes 49
2 5 minutes 7 2 5 minutes 16
3 1 day 1152 3 1 day 2419
3 60 minutes 66 3 60 minutes 140
3 30 minutes 33 3 30 minutes 70
3 15 minutes 16 3 15 minutes 35
3 5 minutes 5 3 5 minutes 11
4 1 day 921 4 1 day 1935
4 60 minutes 49 4 60 minutes 104
4 30 minutes 24 4 30 minutes 52
4 15 minutes 12 4 15 minutes 26
4 5 minutes 4 4 5 minutes 8
5 1 day 794 5 1 day 1668
5 60 minutes 41 5 60 minutes 86
5 30 minutes 20 5 30 minutes 43
5 15 minutes 10 5 15 minutes 21
5 5 minutes 3 5 5 minutes 7
6 1 day 677 6 1 day 1423
6 60 minutes 33 6 60 minutes 71
6 30 minutes 17
6 30 minutes 35