4.11.3.2 Voltage swell
When any phase of the three phase voltage is higher than the set value (voltage rated
value x threshold %), there will be a voltage swell event. When one phase voltage swell
happens, the other phase will not respond to voltage swell event logging. Only when all of
the phases voltage restore back to normal, a new voltage swell event will be responded.
4.11.3.3 Over current
When any phase of the three phase current is higher than the set value (current rated
value x threshold %), there will be a over current event. When one phase over current
happens, the other phase will not respond to over current event logging. Only when all of
the phases current restore back to normal, a new over current event will be responded.
Note: To power quality event logging and waveform capture normal response, user
need to set the appropriate parameters, the parameters set as shown in Table 4-12. In the
parameter settings, voltage sag and voltage swell share the same voltage rated value.
The parameters for event logging includes: voltage rated value, current rated value,
voltage sag threshold, voltage sag half cycle count, voltage swell threshold and over
current threshold. Those parameters also fit waveform capture. The other triggering
conditions for waveform capture can be set when necessary. When the waveform capture
triggering by voltage sag, voltage swell and over current is enabled, the corresponding
event log and waveform will be recorded when voltage sag or voltage swell or over current
happens.
▼ Table 4-12
38
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