ABB SACE Emax E4.2 - Page 123

ABB | SACE Emax 2
Ekip Touch protection trip unit | 17 - Hi-Touch measurements117 | © 2017 ABB | 1SDH001330R0002 - ECN000058721 Rev. A
Continued from the previous page
NOTE:
• The trip unit accepts the parameters in accordance with the following limitation: V dur short <=
V dur middle <= V dur long.
• Since an event may belong to more typologies, only the counter corresponding to the longest
duration is incremented (long > middle > short).
Cumulative counters (Short sags, Medium sags, Long sags) and those of the last-day counters are available
in the respective menus.
Slow voltage increases
The slow voltage increase is the rise of any line-to-line voltage above one of the set thresholds, for a duration
longer than the set time.
The parameters that can be set for the control are available in the Swells submenu:
Parameter Description
V swell Th Short
It defines the first alarm threshold.
It is expressed as %Un.
V swell dur short
In the event of rising above the first alarm threshold, it defines the time
beyond which incremented.
V swell Th Long
It defines the second alarm threshold.
It is expressed as %Un.
V swell dur long
In the event of rising above the second alarm threshold, it defines the time
beyond which incremented.
NOTE:
• The trip unit accepts the parameters in accordance with the following limitation: V dur short <=
V dur long.
• Since an event may belong to more typologies, only the counter corresponding to the longest
duration is incremented (long > short).
Cumulative counters (Short sags, Long sags) and those of the last-day counters are available in the respective
menus.
Harmonic distortion
The Harmonic Distortion check regards line-to-line voltages and the phase currents, and is of two types:
• If the single harmonic components (different from the fundamental ones) have an amplitude greater than
the set value, an alarm is activated and displayed (Harmonic V Over Th / Harmonic I Over Th).
• If the total distortion is greater than the set value an alarm is activated and displayed (THD V Over Th /
THD I Over Th), and the THD meter is incremented by the total minutes during which the threshold was
exceeded.
NOTE: The counter stops at 65535 minutes.
Parameters that can be set for the check are:
Parameter Description
I Harm Analysis
It allows monitoring of the harmonic distortion of currents to be activated,
and the specific menu for setting the parameters (Network Analyser -
Harmonics - Current).
V Harm Analysis
It allows monitoring of the harmonic distortion of voltages to be activated,
and the specific menu for setting the parameters (Network Analyser -
Harmonics - Voltage).
THD Threshold (Voltages)
It defines the alarm threshold for the total distortion of the voltages.
It is expressed as a percentual value.
THD Threshold (Currents)
It defines the alarm threshold for the total distortion of the currents.
It is expressed as a percentual value.
Individual harmonic Th
(Voltages)
It defines the alarm threshold for the individual harmonics of the voltages.
It is expressed as a percentual value.
Individual harmonic Th
(Currents)
It defines the alarm threshold for the individual harmonics of the currents.
It is expressed as a percentual value.
The cumulative and last-day counters (THD Voltage and THD Current) are available in the corresponding
menus.