Siemens SICAM 7KG85X - Recording System

Recording System
The device provides different recording options for the load profile and for monitoring and analyzing the
power quality.
Table 6-6 Recording Measured Values
Recording Measurands Storage Interval/Storage
Method
Application
Measured values
(measurement
records) (only SICAM
P855)
Power frequency 10 s (fixed) Long-time monitoring of the
power quality, for example
according to EN 50160
Magnitude of supply voltage 10 min (1 min, 10 min)
Supply-voltage unbalanced
Voltage harmonics
Flicker
•
P
st
determined over
10 min
•
P
lt
determined over 2 h
(12 P
st
values)
Monitoring of the flicker
severity according to
IEC 61000-4-15
Magnitude of current 10 min (1 min, 10 min) Long-time monitoring of
current- and power-related
values
Current harmonics
Current unbalanced
Additional data (for example,
power values, phase angles,
min/max/AVG values)
Voltage events (event
records)
•
Voltage dips
•
Voltage interruptions
Residual voltage V
rms
(1/2-
cycle) and time stamps (dura-
tion)
Long-time monitoring of the
power quality according to
EN 50160 (only SICAM P855),
classification of voltage events
Voltage swells Maximum voltage magnitude
V
rms
(1/2‑cycle) and time
stamps (duration)
Long-term recording
and monitoring (trend
records) (only SICAM
P855)
V
rms
(1/2-cycle) 2h (2h, 24h) Subsequent analysis of the
power quality with any grid
codes
Fault records (wave-
form records)
•
Voltages
•
Currents
•
Voltage and current varia-
tions
•
Storage of sampled values
(default 2 s, max. 3 s) and
indication values
Analyzing the causes of power-
quality problems
Load-profile records
Load profile Method Fixed Block or
method Rolling Block
Determining the load profile
for supply and consumption of
electric power
The respective measuring interval of the recording is time-stamped to enable a correct time evaluation.
6.3
Power Quality
6.3 Recording System
124 SICAM, SICAM P850/P855 7KG85X, Manual
E50417-H1040-C482-A9, Edition 03.2022