Page 40 - Sace Emax 2 Manual Touch Protection breakers

ABB | SACE Emax 2
Measurements

1 - Standard Measurements

List The Standard measurements are:
Parameter Description
Instantaneous currents Phase current and earth fault measurements in real time
Events List of events, status changes, alarms, recorded by the Trip unit
Trip List of current protection trips (TRIP)
Min-Max measurements History of minimum and maximum currents, recorded at a settable interval
Maintenance CB status: contact wear and last maintenance
Operation counters Number of mechanical and electrical operations

Instantaneous currents The instantaneous currents, available in the Measurements pages, are real time measurements of the phase
and earth fault currents expressed in root mean square value; the monitor time and performance depend on
the rated current defined by the Rating plug (In):
Monitor time Normal Accuracy of
Measurement
(min-max) operating range value read (1)
Phase currents (4) 0,004 ÷ 64 In 0,2 ÷ 1,2 In 1% (3)
Internal earth fault current (2) 0,08 ÷ 64 In 0,2 ÷ 1,2 In 2 % (3)
External earth fault current (2) (5) 0,08 ÷ 4 In 0,2 ÷ 1,2 In 2 %
Residual current (2) (5) 2 ÷ 32 A 5 %

(1) the accuracies refer to normal operating ranges, as established by IEC 61557-12
(2) available with LSIG versions
(3) accuracies based on Ekip Touch without Class 1 Power & Energy Metering package; if the Class 1 Power &
Energy Metering package is present and for all other trip unit models, check the indicated performance values
from page 41
(4) the higher phase currents are also available in the Histograms, Measuring instruments and Measurement
summary pages
(5) available by activating the presence of sensor S.G.R or Rc

38 | © 2019 ABB | 1SDH001316R1002 - ECN000086501 - Rev. A Measurements | 1 - Standard Measurements