ABB SACE Emax E1.2 Operating Instructions For The Design Engineer page 123

117 | © 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
V swell Th Short
V swell dur short
V swell Th Long
V swell dur long
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
I Harm Analysis
V Harm Analysis
THD Threshold (Voltages)
THD Threshold (Currents)
Individual harmonic Th
(Voltages)
Individual harmonic Th
(Currents)
The cumulative and last-day counters (THD Voltage and THD Current) are available in the corresponding
menus.
Description
It defines the first alarm threshold.
It is expressed as %Un.
In the event of rising above the first alarm threshold, it defines the time
beyond which incremented.
It defines the second alarm threshold.
It is expressed as %Un.
In the event of rising above the second alarm threshold, it defines the time
beyond which incremented.
Description
It allows monitoring of the harmonic distortion of currents to be activated,
and the specific menu for setting the parameters (Network Analyser -
Harmonics - Current).
It allows monitoring of the harmonic distortion of voltages to be activated,
and the specific menu for setting the parameters (Network Analyser -
Harmonics - Voltage).
It defines the alarm threshold for the total distortion of the voltages.
It is expressed as a percentual value.
It defines the alarm threshold for the total distortion of the currents.
It is expressed as a percentual value.
It defines the alarm threshold for the individual harmonics of the voltages.
It is expressed as a percentual value.
It defines the alarm threshold for the individual harmonics of the currents.
It is expressed as a percentual value.
Ekip Touch protection trip unit | 17 - Hi-Touch measurements
ABB | SACE Emax 2