ABB SACE Emax E1.2, Operating Instructions For The Design Engineer

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ABB | SACE Emax 2
Ekip Touch protection trip unit | 16 - Ekip Measuring Measurements 113 | © 2017 ABB | 1SDH001330R0002 - ECN000058721 Rev. A
Power factor
Path
Main page - Menus - Measurements
Description
The power factor is the real time measurement of the ratio of total active power and total apparent power,
expressed as Cos
φ
.
The trip unit signals with an alarm if Cos φ drops below a control threshold, preset to 0.95. The threshold can
be modified via Ekip Connect software (from 0.5 to 0.95).
Energy counters
Path
Main page - Menus - Measurements - Energy - Energy counters
NOTE: for details on the pages, see the chapter Menu pages and menus , and the
paragraph
Measurement history
, beginning from page
45.
Description
The energy counters are the measurements of the total reactive and apparent active energy, updated every
minute.
The measurements can be reset through the command
Reset counters , available in the menu Energy .
Instantaneous frequency
Path
Main page - Menus - Measurements
Description
The Instantaneous frequency is the real-time measurement of the line frequency, expressed in Hertz.
NOTE: measurement of the line frequency is available for voltages greater than 30 V (with
Un < 277 V) or 60 V (with Un > 277 V), and if the installation frequency is in the range 30...80
Hz.
Synchrocheck
Path
Main page - Menus - Measurements - Ekip Synchrocheck
Description
The Synchrocheck measurements relating to the function of synchronism between two independent power
source, are described in the dedicated section on accessories, in the paragraph dedicated to the Ekip
Synchrocheck module.
Summary table of Ekip
Measuring measurements
The following table summarises the basic measurements:
Quantities measured Monitor time Normal operating range Accuracy
Line-to-line and phase
voltages
5 V…1.25 Un
50…400 V (phase)
100…690 V (phase-to-phase)
0.5 %
Line frequency 30…80 Hz
45…55 Hz (Frequency set = 50 Hz)
54…66 Hz (Frequency set = 60 Hz)
0.1 %
Active, reactive, and
apparent power
(total and phase)
-(16 In * 1.25 Un)…
(16 In * 1.25 Un) -1.2…-0.3 Sn / 0.3…1.2 Sn (total)
-1.2…-0.3 Pn / 0.3…1.2 Pn (phase)
2 %
Power factor -1…1 - 2 %
Total apparent active,
reactive, and apparent
energy 1 kWh … 2 TWh
1 kVAh … 2 TVARh
1 kVARh … 2 TVAh
- 2 %
NOTE:
• The accuracies refer to normal operating ranges, as established by IEC 61557-12.
• Load Profile Timers and Energy Store time measurements are also available with communication
activated via Ekip Com or front connector (see page 127).