Rectangular
Changes per
Minute (CPM)
Voltage Fluctuation %
120-V Lamp
50-Hz System
120-V Lamp
60-Hz System
230-V Lamp
50-Hz System
230-V Lamp
60-Hz System
4800 Test not required 4.837 Test not required 3.263
Note 1: If the CPM is 1620, the modulation frequency of the rectangular square wave is 13.5 Hz.
Note 2: For tests according to this table, the first voltage change is applied within 5 s after the P
st
evaluation
is started. Flickermeters having a pretest time to charge the filters, indicate when the P
st
evaluation starts.
With the indication, the testing authority can determine when to start the rectangular modulation pattern.
All the voltage fluctuation values in Table 6-4 are multiplied with a fixed factor k. P
st
is determined by the
factor k. Siemens specifies the working range of the classifier as 0.2 ≤ k ≤ 10. The corresponding value P
stk
is
within ± 5 % or ± 0.05 of the factor k, depending on which value is greater.
The rectangular modulation must be applied with a duty cycle of 50 % ± 2 %, and the transition time from one
voltage level to the next must be less than 0.5 ms.
Configuration and Value View via Web Pages
Configuration of the Flicker
To configure the Flicker lamp model in the Configuration tab, proceed as follows:
•
In the navigation window, click AC measurement.
[sc_config_ac_measurement_p85x, 1, en_US]
Figure 6-5
Configuration Tab, Flicker
•
Select a Flicker lamp model according to the following table.
6.2.2
Power Quality
6.2 Flicker
SICAM, SICAM P850/P855 7KG85X, Manual 121
E50417-H1040-C482-A9, Edition 03.2022