Instantaneous Power; Tripping - ABB SACE Emax E1.2 Operating Instructions For The Design Engineer

Instantaneous power Description
Tripping Path
111 | © 2017 ABB | 1SDH001330R0002 - ECN000058721 Rev. A
Instantaneous power values are real time measurements of the total and phase power
NOTE: phase power measurements are available with four-pole circuit-breakers or three-pole
circuit-breakers with external neutral.
Representations and access pages
The power measurements are available in different forms, accessible from the following pages:
• In the Measurements synthesis page, accessible from the Histograms page, there are the measurements
in kW or kVAR of the active, reactive and apparent total power.
• In the Measuring instruments page there is a graphical representation in the form of analog meters in
kW or kVAR, for active, reactive and apparent total power.
• In the Measurements page there are measurements in kW or to kVAR of the active, reactive and apparent
total power and of phase power (if any).
NOTE: with three-pole circuit-breakers only one Measurements page is available. With
four-pole circuit-breakers or three-pole + neutral voltage circuit-breakers, there are three
Measurements pages available that contain all power measurements (one for each phase).
The measurements in kW or kVAR are available with minimum voltages of 5 V and minimum currents of 0.03
In The maximum measurable power value is 1.25 Pn (phase power) / 1,25 Sn ( total power).
NOTE: with voltages or currents lower than the minimum values, or power higher than 1.25
Pn / 1,25 Sn, the indication "..." is shown.
Main page - Menu - Measurements - Historicals
Description
The presence of the Ekip Measuring Pro module introduces other types of trips, relating to the protections
active with Measuring Pro.
The ways to access theses pages and the information contained are similar to those for the trips of the Basic
protections.
Correlated measurements
The type of protection involved determines the measurements recorded at the moment of tripping:
Protection against Measurements recorded at the moment of the tripping
Phase currents (L1, L2, L3, Of), and line-to-line voltages (U12, U23, U31).
Voltage
Frequency Phase currents (L1, L2, L3, Of), and line frequency.
Phase currents (L1, L2, L3, Of), and total power (active or apparent depending
Power
on the protection tripped).
NOTE: if protection RV trips, U0 is also recorded.
Ekip Touch protection trip unit | 16 - Ekip Measuring Measurements
ABB | SACE Emax 2