Measurands; Operational Measured Quantities Depending On The Connection Types - Siemens SICAM Q100 7KG95 Series Manual

Measuring and Recording
3.1 General Information on Measuring and Recording
Recording

Measurands

Magnitude of current
Current harmonics and inter-
harmonics
Current unbalanced
Additional data (for example,
power values, phase angles,
min/max/AVG values)
•
Voltage events with
event recorder
•
Voltage swells
RVC
Long-term recording V
rms
and monitoring with
trend recorder
•
Fault records with
waveform recorder
•
•
Mains signaling Mains signaling voltages on
voltage the supply voltage
Load-profile recording Load profile
The respective measuring interval of the recording is time-stamped to enable a correct time evaluation.
Measurands
3.1.3
3.1.3.1

Operational Measured Quantities Depending on the Connection Types

Table 3-4
Measured Quan-
Circuit
tity
Voltage
Va a-N
Vb b-N
92
Voltage dips
Voltage interruptions
(1/2-cycle)
Voltages
Currents
Binary inputs (depending
on the Hardware)
Operational Measured Quantities Depending on the Connection Types in Power Systems
(10/12 cycles)
3-Wire
Network
1-Phase
(Delta)
System
Balanced
(1I)
x –
– –
Storage Interval/Storage
Method
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)
–
10 min (1 min, 10 min)
•
Voltage and current varia-
tions
•
Binary input and remote
indication changes
•
Storage of sampled values
(default 2 s, max. 3 s) and
indication values
Mains signaling voltage trig-
gers, start time, acquisition of
10/12 cycle voltages (max. 2
min)
Method Fixed Block or
method Rolling Block
3-Wire 3-Wire
Network Network
(Delta) (Delta)
Unbal- Unbal-
anced (3I) anced (2I)
– –
– –
Application
Long-time monitoring of
current- and power-related
values
Long-time monitoring of the
power quality according to
EN 50160, classification of
voltage events, for example
ITIC curve
–
Subsequent analysis of the
power quality with any grid
codes
Analyzing the causes of power-
quality problems
Monitoring of the mains
signaling voltage according to
EN 50160
Determining the load profile
for supply and consumption of
electric power
4-Wire 4-Wire
Network Network
4-Wire
(Star) (Star)
Network
(Star)
Unbal- Unbal-
anced (3I) anced (3I)
Balanced
(1I)
PQ Values PQ Values
for Ph-N for Ph-Ph
x x
– x
SICAM, SICAM Q100 7KG95xx, Manual
E50417-H1040-C522-A9, Edition 06.2021
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