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Emax X1-Tmax T7-Tmax T8
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Doc N°
Mod.
Apparatus
Scale
Page No
1SDH000587R0002
3.7. Measuring functions
PR332/P and PR333/P include various measuring functions.
The basic measurements available in all models are:
- Currents: three phases (L1, L2, L3), neutral (N) and earth fault
- Trips (last 20) and events (last 80)
- Log register: storage of maximum current reading (with the date and time of recording)
- Peak factors: three phases (L1, L2, L3) and neutral (N)
- Percentage of contact wear.
Configured with the PR330/V module, PR333/P and PR332/P provide further measurements:
- Voltage: line-to-line, line-to-neutral and residual voltage
- Power: active, reactive, apparent
- Log register: storage of maximum and minimum voltage and power readings (with the date and time of recording)
- Power factor
- Energy: active, reactive, apparent
- Network frequency
PR333/P provides a further measuring function:
- Wave forms: network voltages and phase currents, and harmonic analysis.
3.7.1. Runtime measurements: current, voltage, power
The main current, voltage and power measurements can be accessed by using the UP and DOWN buttons from the default page.
In the default page, histograms with the currents and voltages appear on the display, while the value and the highest phase are
also given in the numerical format.
The current and voltage measurements available depend on the version and configuration of the CB and protection release.
Currents:
- Three-pole CB: phase currents I1, I2, I3 are available
- Three-pole CB, configuration with external neutral (3P+N): phase currents I1, I2, I3, Ine are available
- Four-pole CB: phase currents I1, I2, I3, Ine are available
- LSIG and LSIG MM version of the protection release: Ig measurement available.
- LSIG and version of the protection release and presence of SGR: Ige measurement available.
- LSIG or LSIRc (PR332/P) version of the protection release and presence of sensor Rc: Ige measurement available (to be con-
sidered as residual current).
Voltages (In the presence of the PR330/V module):
- Three-pole CB without neutral: network voltages V12, V23, V13 and the total powers available (active, reactive, apparent).
- Three-pole CB, with neutral PRESENT Voltage option: network voltages V12, V23, V13, phase voltages V1, V2, V3, V0 and the
powers (active, reactive, apparent) of each phase and total powers available.
- Four-pole CB: network voltages V12, V23, V13, phase voltages V1, V2, V3, V0 and the powers (active, reactive, apparent) of
each phase and total powers available.
The runtime measurement tolerance margins are:
Type of measurement range
Range of values
measured by the
protection release
Standard operation
Range
Tolerance %
Phase and neutral currents
0,05 ... 16In
0,3 ... 6 In
± 1,5
Internal ground fault current
0,05 ... 16In 4In
0,3 ... 4 In
± 1,5
External ground fault current (external source
round return)
0,05 ... 4In
0,3 ... 4 In
± 3
Phase-to-phase and phase voltages (meas-
ured at the module’s input and thus inde-
pendent of the precisionrelating to the use of
any VT
10V
conc
... 1,1 x 690V
conc
50 V
conc
... 1,1x690 V
conc
± 1
Residual voltage(for systems with neutral
only)
10V
conc
... 1,1 x 690V
conc
50 V
conc
... 1,1x690 V
conc
± 1
Instantaneous active powersingle phase and
total system
0,02 ... 16Pn
0,3 ... 6 Pn
± 2,5
Instantaneous reactive power single phase
and total system
0,02 ... 16Pn
0,3 ... 6 Pn
± 2,5
Instantaneous apparent power single phase
and total system
0,02 ... 16Pn
0,3 ... 6 Pn
± 2,5
B1751
