33
8.2 Load profile
Load profile stores values of different registers at regular intervals. G1B meter may store up to 16
channels (up to 16 different data values) in load profile. Any demand (e.g. 1.5.0), total energy (e.g.
1.8.0) or average value per integration period may be assigned to any of 16 load profile channels.
Values of chosen registers are saved to load profile at regular intervals of time (integration period).
Load profile data can be readout via all available communication interfaces. Registers that may be
assigned to load profile channels are listed below:
Table 8-3 Load profile data list
Demand of last integration period
Billing period energy
1.5.0
+P
1.9.T*VV
+A
2.5.0
-P
2.9.T*VV
-A
15.4.0
|P|
15.9.T*VV
|A|
3.4.0
+Q
3.9.T*VV
+R
4.4.0
-Q
4.9.T*VV
-R
5.4.0
Q1
5.9.T*VV
R1
6.4.0
Q2
6.9.T*VV
R2
7.4.0
Q3
7.9.T*VV
R3
8.4.0
Q4
8.9.T*VV
R4
Total energy (All tariffs)
Average values per integration period
1.8.0
+A
12.5.0
Instantaneous RMS voltage (V)
2.8.0
-A
11.5.0
Instantaneous RMS current (A) in phase
15.8.0
|A|
91.5.0
Instantaneous RMS current (A) in neutral
3.8.0
+R
15.5.0
Active power ±P (kW)
4.8.0
-R
3.5.0
Reactive power +Q (kvar)
5.8.0
R1
4.5.0
Reactive power –Q (kvar)
6.8.0
R2
13.5.0
Power factor cos
ϕ
7.8.0
R3
14.5.0
Frequency (Hz)
8.8.0
R4
Storage interval (in days) of load profile depends on integration period chosen.
Integration period may obtain values of 1, 2, 3, 4, 5, 6, 10, 12, 15, 20, 30 and 60 minutes.
Storage interval is calculated by means of formula:
1440
1
10
p
s
c
M
l
×
−
+
×
=
l
- Storage interval (in days)
M
- Memory capacity (in bytes), dedicated for load profile;
c
- Number of channels [1T16]
s
- Entry size
•
4 bytes for x.5.0 demand registers
•
6 bytes for x.8.0 energy registers
•
2 bytes for instantaneous value registers
p
– Integration period (1, 2, 3, 4, 5, 6, 10, 12, 15, 20, 30 and 60 minutes)
Example #1, if load profile is parameterized to store 1 energy value (i.e. 1 channel of 6 bytes)
every 15 minutes, the storage interval would be:
days
150
1440
15
1
10
6
1
231000
=
×
−
+
×
Example #2, if load profile is parameterized to store 2 energy values [+A, -A] (i.e. 2 channels of 6
bytes) every 30 minutes, the storage interval would be:
days
218
1440
30
1
10
6
2
231000
=
×
−
+
×
Summary of Contents for G1B Series
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