Parameter Default Setting Setting Range
Prim. nom. 400.0 V 1.0 V to 1 000 000.0 V (depending on the setting of
PT primary)
IEC 61000-4-30 Class A:
•
Up to 230 V:
200 % overvoltage
•
> 230 V to 400 V:
200 % to 15 % overvoltage
UL conditions:
•
Up to 170 V:
200 % overvoltage
•
> 170 V to 300 V:
200 % to 15 % overvoltage
Current Inputs
CT primary 5.0 A 1.0 A to 100 000.0 A
CT secondary 5.0 A 1.0 A to 10.00 A
Zero-Point Suppression
Zero-point suppression
(in % of Vrated and Irated)
0.3 % 0.0 % to 10.0 %
Measuring System
The device measures the power quality according to IEC 61000-4-30 Ed. 3 in 1-phase or polyphase energy
supply systems.
The basic measuring interval for calculation of the following values is 10 cycles in 50-Hz systems or 12 cycles
in 60-Hz systems:
•
Voltage RMS values
•
Voltage harmonics
•
Voltage unbalance
•
Currents
•
Current harmonics
NOTE
Depending on parameter settings, the browser displays the measured values with the corresponding unit
or indications in a table that is updated every 15 s. Harmonics can be represented in a table or in a diagram.
The measuring functions are divided into the following parts:
•
PQ measurements
•
Operational measurements
•
Energy management and counter functions
An overview of the measured quantities demanded according to IEC 61000-4-30 Ed.3, their measurement
uncertainty and measuring ranges are represented in the following tables.
2.5.3
Basic Functions
2.5 AC Measurement
SICAM, SICAM P850/P855 7KG85X, Manual 49
E50417-H1040-C482-A9, Edition 03.2022
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