Ekip Measuring Measurements - ABB SACE Tmax XT5 Operation And Maintenance Manual

2 - Ekip Measuring Measurements

Instantaneous measurements Instantaneous currents, available in the Summary pages, are real time measurements of the line-to-line and
101 | © 2019 ABB | 1SDH002039A1002 - ECN000093027 - Rev. A
Elenco 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 164).
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
Phase voltages
Line frequency
Total active, reactive and
apparent power
(7)
Active, reactive and
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 104
(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 690 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
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-max)
5 V ÷ 1,25 Un
(6)
5 V ÷ 1,25 Un
30 ÷ 80 Hz
(2)
|Pmin ÷ Pmax|
(5)
|Pmin ÷ Pmax|
(5)
Normal operating Accuracy of
range value read
100 ÷ 690 V 0.5 %
50 ÷ 400 V 0.5 %
f -10 % ÷ f +10 % 0,1 %
(4)
|0,3 ÷ 1,2 Sn| 2 %
|0,3 ÷ 1,2 Pn| 2 %
Measurements | 2 - Ekip Measuring Measurements
ABB | SACE Tmax XT
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(1)
(8)
(8)
(3)
(3)
(3)
Continued on the next page