Energy; Peak Factor; Mains Frequency; Contact Wear - ABB Tmax T7 Operating Instructions Manual

3.7.6.

Energy

PR333/P and PR332/P (with module PR330/V) measure total active, reactive and apparent energy of the system. 0.001 MWh,
0.001 MVARh or 0.001MVAh are the minimum values that can be displayed.
The meter can be reset by confirming the "Reset meters" menu item in the page.
Type of measurement range
Active energy
Reactive energy
Apparent energy
3.7.7.

Peak factor

The peak factor measurement, a ratio between I
The measurement is not displayed if the current is less than 0.3xIn and is not available for currents exceeding 6xIn.
Type of measurement range
Peak factor
3.7.8.

Mains frequency

PR333/P and PR332/P (with module PR330/V) measure the mains frequency. This is calculated on the basis of the voltage (if
Umax > 0.1Un).
The measurement is guaranteed after up to 5 s from the frequency variation.
Type of measurement range
Mains frequency
3.7.9.

Contact wear

This sub-menu displays the percentage of wear on the CB contacts.

3.7.10. Wave forms

PR333/P provides a further measurement function, which is useful for the harmonic analysis of phase currents and phase-to-
phase voltages.
The Measurements-Wave forms menu allows the operator to select from amongst 8 measurements (currents L1, L2, L3, Ne, gt,
voltages V12, V23, V31). The graphic representation of the wave form chosen (120 samples) is displayed once the measurement
has been selected:
Press ENTER to access the selected wave form menu, where acquisition can be updated (Refresh command) or an area opened
for harmonic analysis of the wave form (Harmonics command).
The Harmonics area gives the graphic representation of the module with the 1st to 40th harmonics (up to the 35th for 60 Hz
network frequency settings) given in percentage of the fundamental harmonic (1st harmonic), thus always indicated at 100%.
Armonica selezionata
Rappresentazione grafica delle armoniche
L'armonica selezionata lampeggia
Use the UP and DOWN keys to move to the required bar and read the corresponding percentage value.
The measuring accuracy is 5%.
B0431
Mod.
measured by the
protection release
/ I
peak
measured by the
protection release
measured by the
protection release
I1 = - - -
Misura selezionata
Ne
B1751
Range of values
0,02 ... 16 Pn
0,02 ... 16 Pn
0,02 ... 16 Pn
is available for each current phase.
rms
Range of values
0,3 ... 6 In
Range of values
35 ... 80 Hz
150.0 %
Total distorsion :
Harmonic n. 1/40 : 100.0 %
Apparatus
Doc N°
Standard operation
Range Tollerance %
0,3 ... 6 Pn
0,3 ... 6 Pn
0,3 ... 6 Pn
Standard operation
Range
0,3 ... 6 In
Standard operation
Range
45 ... 66 Hz
Distorsione armonica percentuale totale
Distorsione percentuale
dell'armonica selezionata
Emax X1-Tmax T7-Tmax T8
1SDH000587R0002
± 2,5
± 2,5
± 2,5
Tolerance %
± 1,5
Tolerance %
± 0,2
Scale
Page No
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