Page 41 - ACB-E1.2-E2.2-E4.2-E6.2

ABB | SACE Emax 2

2 - Measuring Measurements

List The Measuring measurements are
Condition Access
Instantaneous voltages Phase and line-to-line voltage measurements in real time
Real time measurements of the active, reactive, apparent phase
Instantaneous powers
and total powers
Instantaneous frequency Measurement of the line frequency
Trip List of trips (TRIP) due to voltage, frequency, power protections
History of minimum, maximum and mean voltages and powers
Min-Max-Med measurements
recorded within a settable range
Peak factor Real time measurement of the peak factor of the currents
Power factor Real time measurement of the power factor
Energy counters Measurement of active, reactive, apparent energy

The relative associated measurements are activated by means of the Ekip Synchrocheck module.

Instantaneous measurements Instantaneous currents, available in the Summary pages, are real time measurements of the line-to-line
and phase voltages expressed in root-mean-square value.
Representation, measuring range and performance depend on the set rated voltage (Un).
Available in the Summary pages, the instantaneous powers are real time measurements of the phase and
total active powers.
Representation, measuring range and performance depend on the set rated voltage (Un) and on the rated
current defined by the rated size of the Trip unit (In); in addition, the reference changes on the basis of
the type of measurement:
• Sn for total powers (Sn = In * Un * √3).
• Pn for phase powers (Pn = In * Un / √3).
NOTE: the phase powers and voltages are available with 4P and 3P + N CBs

Monitor time (min- Normal operating Accuracy of value
Measurement
max) range read (1)
Line-to-line voltages (6) 5 V ÷ 900 V (9) 100 ÷ 690 V 0.5 % (8)
Phase voltages 5 V ÷ 900 V (9) 50 ÷ 400 V 0.5 % (8)
Line frequency 30 ÷ 80 Hz (2) f -10 % ÷ f +10 % (4) 0,1 % (3)
Total active, reactive Pmin ÷ Pmax (5) 0,3 ÷ 1,2 Sn 2 % (3)
and apparent power (7)
Active, reactive and (5) (3)
apparent phase power Pmin ÷ Pmax 0,3 ÷ 1,2 Pn 2 %

(1) the accuracies refer to normal operating ranges, as established by IEC 61557-12
(2) available for voltage values of over 30 V (with Un < 277 V) or 60 V (with Un > 277 V)
(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) 45 to 55 Hz with set frequency = 50 Hz; 54 to 66 Hz with f = 60 Hz
(5) Pmin = 0,5 In x 5 V; Pmax= 3 x 16 In x 900 V
(6) the higher line-to-line voltages are also available in the Histograms, Measuring instruments and
Measurement summary pages
(7) the higher total powers are also available in the Measuring instruments and Measurement
summary pages
(8) without transformers; 0.7 % with class 0.2 external transformers
(9) without transformers; with transformers, multiply the min and max values for the transformer
ratio between primary and secondary voltages

39 | © 2022 ABB | 1SDH001316R1002 - ECN000232533 Ekip Touch - Measurements | 2 - Measuring Measurements