Instantaneous Voltages - ABB SACE Emax 2 Series Installation, Operation And Maintenance Instructions

Instantaneous voltages

131 | © 2013 ABB | 1SDH001000R0002 - L7804
Description
Instantaneous voltages are measurements in real time of the phase-to-phase voltages and
phase voltages.
NOTE: the measurements of the phase voltages are available with four-pole or three-
pole circuit-breakers configured with external neutral.
Representations and access pages
Voltage measurements are available in different representations, accessible from the following
pages:
• In the Histograms page there is a graphical representation in the form of a histogram of
the phase-to-phase voltages, and measurement in Volts of the highest voltage.
• In the Measurements Synthesis page, accessible from the Histograms page, there is
a measurement in Volts of the highest phase-to-phase voltage.
• In the Measuring instruments page there is a graphical representation in the form of a
volt meter and measurement in Volts of the highest phase-to-phase voltage.
• In the Measurements page there are measurements in Volts of all the phase-to-phase
voltages and phase voltages.
The measurements in Volts are available by a minimum value of 5 V to a maximum value of
1.25 Vn.
NOTE:
• For voltages lower than 5 V "..." is shown, while for voltages greater than 1.25 Vn
">1.25 Vn" is shown.
• In the Histograms page, the graphical representation of the voltages is in relation
1 Vn, with a maximum value of 1.25.
• By activating communication with the release, the maximum measurable voltage
is: 900 V x ratio between primary voltage and secondary voltage (example: primary
voltage= 1000 V, secondary voltage 200 V; the ratio is 5).
By activating communication with the release, the maximum remotely measurable voltage is
900 V.
NOTE: if there is an external transformer present, the maximum measurable voltage
is: 900 V x ratio between primary voltage and secondary voltage (example: primary
voltage= 1000 V, secondary voltage 200 V; the ratio is 5).
Ekip Touch protection release | 15 - Measuring Measurements
ABB | SACE Emax 2