Recording System - Siemens SICAM 7KG85X Manual

Power Quality

6.3 Recording System

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