ABB XT7, Руководство по эксплуатации и обслуживанию

Страница: 115 / 193

ABB | SACE Tmax XT
Ekip Touch - Measurements | 2 - Ekip Measuring Measurements 113 | © 2020 ABB | 1SDH001821A1002 - ECN000135670
2 - Ekip Measuring Measurements
List The Measuring measurements are
Condition Access Page
Instantaneous voltages Phase and line-to-line voltage measurements in real time 113
Instantaneous powers
Real time measurements of the active, reactive, apparent
phase and total powers
113
Instantaneous frequency Measurement of the line frequency 113
Trip
List of trips (TRIP) due to voltage, frequency, power
protections
114
Min-Max-Med measurements
History of minimum, maximum and mean voltages and
powers recorded within a settable range
114
Peak factor Real time measurement of the peak factor of the currents 114
Power factor
Real time measurement of the power factor 114
Energy counters Measurement of active, reactive, apparent energy 114
The relative associated measurements are activated by means of the Ekip Synchrocheck module (page 174).
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
Measurement
Monitor time
(min-max) Normal operating
range Accuracy of
value 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 and
apparent power
(7)
|Pmin ÷ Pmax|
(5)
|0,3 ÷ 1,2 Sn| 2 %
(3)
Active, reactive and
apparent phase power
|Pmin ÷ Pmax|
(5)
|0,3 ÷ 1,2 Pn| 2 %
(3)
(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 116
(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
Continued on the next page