Page 106 - MCCB-XT5

ABB | SACE Tmax XT

2 - Measuring Measurements

List The Measuring measurements are
Condition Access Page
Phase and line-to-line voltage measurements in real
Instantaneous voltages 104
time
Real time measurements of the active, reactive,
Instantaneous powers 104
apparent phase and total powers
Instantaneous frequency Measurement of the line frequency 104
List of trips (TRIP) due to voltage, frequency, power
Trip 105
protections
Min-Max-Med History of minimum, maximum and mean voltages and
measurements powers recorded within a settable range 105
Real time measurement of the peak factor of the
Peak factor 105
currents
Power factor Real time measurement of the power factor 105
Energy counters Measurement of active, reactive, apparent energy 105

The relative associated measurements are activated by means of the Ekip Synchrocheck module (page
167).

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 100 ÷ 690 V 0.5 %
Phase voltages 5 V ÷ 900 V 50 ÷ 400 V 0.5 %
Line frequency 30 ÷ 80 Hz (2) f -10 % ÷ f +10 % (4) 0,1 % (3)
Total active, reactive (5) (3)
and apparent power (7) Pmin ÷ Pmax 0,3 ÷ 1,2 Sn 2 %
Active, reactive and Pmin ÷ Pmax (5) 0,3 ÷ 1,2 Pn 2 % (3)
apparent phase power

(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 and Ekip Touch Measuring 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 107
(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

Continued on the next page

104 | © 2022 ABB | 1SDH002039A1002 - ECN000212994 Ekip Touch - Measurements | 2 - Measuring Measurements