Siemens SICAM P 7KG7750 - Page 108

5
5.9 Memory Management
108 Power Meter SICAM P 7KG7750/55, Manual
E50417-B1076-C340-A6, Edition 09.2013
The recording capacities will be calculated according to the following formulas:
Mean values
n: Number of channels (max. 8)
Period time: 5 s, 10 s, 15 s, 30 s, 60 s, 600 s, 900 s, 1800 s or 3600 s
Calculation example
with 20 % memory size, n = 8 channels and period time = 10 s
Power values
n: Number of channels (max. 8)
Period time: 15 min, 30 min or 60 min
Calculation example
with 20 % memory size, n = 8 channels and period time = 15 min
Note
For technical reasons (e.g., capacity for header data), the recording capacity for the individual
measured values displayed in the dialog window is slightly smaller than the capacity in the exam-
ples.
3600*)4)12*((
*][
][
Byten
PeriodtimeByteemoryAllocatedM
ht
MAX
+
=
209715 Byte * 10
((8 * 12) + 4) Byte * 3600
t
MAX
(h) =
= 5.8 h
1440*)6)4*((
*][
][
Byten
PeriodtimeByteemoryAllocatedM
dt
MAX
+
=
209715 Byte * 15
((8 * 4) + 6) Byte * 1440
t
MAX
(d) =
= 60 d