Measuring Measurements - ABB SACE Emax 2 Series Operating Instructions Manual

2 - Measuring Measurements

Instantaneous measurements Instantaneous currents, available in the Summary pages , are real time measurements of the line-to-line
117 | © 2023 ABB | 1SDH001330R1002 - ECN000297030
List The Measuring measurements are
Condition
Instantaneous voltages
Instantaneous powers
Instantaneous frequency
Trip
Min-Max-Med
measurements
Peak factor
Power factor
Energy counters
The relative associated measurements are activated by means of the Ekip Synchrocheck module (page
247).
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
Measurement
Line-to-line voltages
(6)
Phase voltages
Line frequency
Total active, reactive
and apparent power
(7)
Active, reactive and
apparent phase power
the accuracies refer to normal operating ranges, as established by IEC 61557-12
(1)
available for voltage values of over 30 V (with Un < 277 V) or 60 V (with Un > 277 V)
(2)
(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 120
45 to 55 Hz with set frequency = 50 Hz; 54 to 66 Hz with f = 60 Hz
(4)
Pmin = 0,0625 In x 5 V; Pmax= 3 x 16 In x 900 V
(5)
the higher line-to-line voltages are also available in the Histograms, Measuring instruments and
(6)
Measurement summary pages
the higher total powers are also available in the Measuring instruments and Measurement
(7)
summary pages
without transformers; 0.7 % with class 0.2 external transformers
(8)
without transformers; with transformers, multiply the min and max values for the transformer
(9)
ratio between primary and secondary voltages
Access
Phase and line-to-line voltage measurements in real
time
Real time measurements of the active, reactive,
apparent phase and total powers
Measurement of the line frequency
List of trips (TRIP) due to voltage, frequency, power
protections
History of minimum, maximum and mean voltages and
powers recorded within a settable range
Real time measurement of the peak factor of the
currents
Real time measurement of the power factor
Measurement of active, reactive, apparent energy
Monitor time (min- Normal operating
max) range
5 V ÷ 900 V 100 ÷ 690 V
(9)
5 V ÷ 900 V 50 ÷ 400 V
(9)
30 ÷ 80 Hz (2) f -10 % ÷ f +10 %
Pmin ÷ Pmax 0,3 ÷ 1,2 Sn
(5)
Pmin ÷ Pmax 0,3 ÷ 1,2 Pn
(5)
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Accuracy of value
read
(1)
0.5 %
(8)
0.5 %
(8)
(4) 0,1 % (3)
2 %
(3)
2 %
(3)
Continued on the next page
Ekip Touch - Measurements
2 - Measuring Measurements