Siemens SICAM Q100, Руководство по эксплуатации устройства, Страница: 33 / 376

4 Measured Quantities and Recording
4.1 Power Quality Measuring System and Recording System
33 SICAM Q100, 7KG95xx, Device Manual
E50417-H1040-C522-A4, Edition 03.2018
4.1.5 Rapid Voltage Change
Rapid voltage change (RVC) is a quick transition of RMS voltage occurring between two steady-state
conditions, and during which the RMS voltage does not exceed the dip/swell threshold.
The threshold of RVC detection is configurable from 1 % up to 6 % of Udin.
The following data and values are determined during the evaluation of the rapid voltage change in SICAM Q100
and listed in the tab
Rapid Voltage Change
(see Chapter 8.4.2.1):
• RVC event start time
• RVC event duration
• ∆ V
max
• ∆ V
ss
• The affected phases (a, b, c, ab, bc, ca, a-b-c).
Figure 4-3 Rapid Voltage Change (RVC)
NOTE
V
rms
(1/2): RMS voltage refreshed each half-cycle according to IEC61000-4-30 Ed. 3.
100/120 V
rms
(1/2) value: 100 values for 50 Hz nominal, or 120 values for 60 Hz nominal.