Arcteq AQ F3 0 Series, Инструкция по эксплуатации

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Instruction manual – AQ F3x0 Feeder protection IED 122 (162
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Voltage interruption, when the RMS value of the measured voltage is below a minimum
level specified by a parameter. For the evaluation, the duration of the voltage interruption
should be between a minimum and a maximum time value defined by parameters.
Figure 3-5 Voltage interruption
Sag and swell detection
Voltage sag is detected if any of the three phase-to-phase voltages falls to a value between
the “Sag limit” setting and the “Interruption Limit” setti ng. In this state, the binary output
“Sag” signal is activated. The signal resets if all of the three phase -to-phase voltages rise
above the “Sag limit”, or if the set time “Maximum duration” elapses. If the voltage returns
to normal state after the set “M
i nimum duration” and before the time “Maximum duration”
elapses, then the “Sag Counter” increments by 1, indicating a short -time voltage variation.
The report generated includes the duration and the minimum value. A voltage swell is
detected if any of the three phase-to-
phase voltages increases to a value above the “Swell
limit” setting. In this state, the binary output “Swell” signal is activated. The signal resets if
all of the three phase-to- phase voltages fall below the “Swell limit”, or if the set tim e
“Maximum duration” elapses. If the voltage returns to normal state after the “Minimum
duration” and before the time “Maximum duration” elapses, then the “Swell Counter”
increments by 1, indicating a short-time voltage variation.
The report generated includes the duration and the maximum value. A voltage interruption
is detected if all three phase-to-
phase voltages fall to a value below the “Interruption Limit”
setting. In this state, the binary output “Interruption” is activated. The signal resets if any of
the three phase-to- phase voltages rises above the “Interruption limit”, or if the time
“Maximum duration” elapses. No counter is assigned to this state.
The inputs of the sag and swell detection function are:
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RMS values of the of three phase-to-phase voltages,
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Binary input
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Setting parameters