Measurements - ABB SACE Emax 2 Series Operating Instructions Manual

3 - Measurements

Instantaneous currents The instantaneous currents, available in the Measurements pages, are real time measurements of
Maximum and minimum
currents
Contact Wear Contact wear indicates the state of deterioration of the main contacts of the circuit-breaker.
Number of operations In the presence of auxiliary power, the trip unit records a series information relating to the openings of
30 | © 2023 ABB | 1SDH001330R1002 - ECN000297030
List Ekip Dip is able to take various measurements, all available via Ekip Connect::
Parameter
Instantaneous currents Phase current and earth fault measurements in real time
Trip
Min Max Measurements
Operation counters
All information are available via the Ekip T&P module and via Ekip Connect software; instantaneous
measurements are also available via the Ekip Multimeter unit.
the phase and earth fault currents expressed in root mean square value; the measurement time and
performance depend on the rated current defined by the Rating plug (In):
Measurement
Phase currents
Internal earth fault currents
the accuracies refer to normal operating ranges, as established by IEC 61557-12
(1)
available with LSIG versions
(2)
The trip unit is able to record the maximum and minimum current, measured inside an interval that can
be programmed by the user.
Every measurement recorded is accompanied by the following information:
• Recording interval.
• Phase and value of maximum and minimum current measured.
• Date and time of the recording (referring to the internal clock).
NOTE: in the case of the minimum current, if the value drops below the 0.03 In threshold, it
will be recorded and represented by the symbol "..." in the measurement field.
Trips The trip unit is able to record the last 30 openings of the circuit-breaker caused by protection functions
(trips).
The trips include useful information:
• The protection that caused the trip
• The progressive number of the opening
• The date and time of the opening (referring to the internal clock)
• The measurements associated to the trip protection.
The value is expressed as a percentage, and is 0 % in the case of no wear, and 100 % in the case of total
wear.
The contact wear is calculated automatically by the trip unit at every opening for protection or, in the
presence of an auxiliary power supply, also at every manual opening of the circuit-breaker.
the circuit-breaker:
• Number of manual operations
• Total number of operations (manual + trips)
Description
List of current protection trips (TRIP)
History of minimum and maximum currents, recorded at a settable
interval
Number of mechanical and electrical operations
Monitor time
(min-max)
0,004...64 In
0,08...64 In
(2)
ABB | SACE Emax 2
Normal opera- Accuracy of
ting range value read
0,2...1,2 In 1 %
0,2...1,2 In 2 %
3 - Measurements
(1)
Ekip Dip