Touch Measurements; Presentation; Instantaneous Currents; Tripping - ABB SACE Emax E1.2 Operating Instructions For The Design Engineer

15 - Touch measurements

Presentation Touch measurements are available in all the models of trip units of the Ekip Touch range.
Instantaneous currents Description
Tripping Path
105 | © 2017 ABB | 1SDH001330R0002 - ECN000058721 Rev. A
The following is a list of the available measurements:
Measurements Description
Instantaneous currents Real Time measurements of the currents
Trip List of the trip for basic protections
Events List of events, changes of state, alarms recorded by the trip unit
Maximum current
History of the maximum currents recorded with an interval that can be set
Minimum current History of the minimum currents recorded with an interval that can be set
Peak factor Real time measurement of the peak factor of the currents
Contact Wear Calculation of the wear of the contacts
Datalogger Recording of the waveform of the currents and the digital states
Operation counters Number of mechanical and electrical operations
Instantaneous currents are real time measurements of earth fault and phase currents, expressed as r.m.s.
value.
Representations and access pages
The current measurements are available in different forms, accessible from the following pages:
• Histograms page: graphical representation in the form of a histogram of the phase currents, and
measurement in Amperes of the highest current.
• Measuring instruments page: graphical representation in the form of an ammeter and measurement in
Amperes of the highest current.
• Measurements page: measurements in Amperes of all the phase currents and earth fault current.
NOTE:
• The measurement of the earth fault current is available only with LSIG versions of trip units.
• The measurements in Amperes are available from a minimum value of 0.03 In for the phase
currents, and 0.08 In the for earth fault current. For lower currents "..." is displayed.
• In the Histograms page, the graphical representation of the currents is in relation to 1 In, with
a maximum value of 1.25 In
Main page - Menu - Measurements - Historicals
Description
The trip unit is able to record the last 30 openings of the circuit-breaker caused by protection trips (trips).
The trips are associated to the following information:
• The protection that tripped.
• The progressive number.
• The date and time of the opening (referring to the internal clock)
• The measurements associated to the trip protection.
NOTE:
• Each trip is associated to a progressive number that is increased with every trip.
• If the trip unit has exceeded the threshold of the 30 openings, the oldest ones are progressively
overwritten.
ABB | SACE Emax 2
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Ekip Touch protection trip unit | 15 - Touch measurements