hager h3+ - Measurements in Real-Time

42 6LE005550A
Function of the Energy trip unit
3.3 Measurement function
Embedded
display
Panel
display
Modbus
HTP610H
tool
Averages over interval (Demand values)
Active (kW), reactive (kvar),
apparent (kVA) power
P Dmd, Q Dmd, S Dmd
Total/per phase
– X X X
Maximum power since last reset.
Max P Dmd, Max Q Dmd,
Max S Dmd
Total/per phase
– X X X
Current
I1 Dmd, I2 Dmd, I3 Dmd;
IN Dmd, Iavg Dmd
– – X X
Maximum current since last
reset.
Max I1 Dmd, Max I2 Dmd,
Max I3 Dmd; Max IN Dmd
– – X X
Integration interval sliding, fixed
or synchronised by Modbus
Adjustable from 5 to
60 minutes in increments
of one minute
– X X X
Power factor
Power factor and
cos (fundamental)
Total
X (only
cos )
X X X
Power factor and
cos (fundamental)
per phase
– X X X
Total harmonic distortion
Voltage THD
THDU (Ph -Ph),
THDV (Ph -N)
–
X
X X
Current THD THDI per phase
– X X X
Other
Frequency f
X X X X
Phase rotation
X X X X
Quadrant
– X X X
3.3.2
Measurements in real-time
The Energy trip unit provides the following basic electrical variable measurements in
real-time (every second):
- Current for each phase and neutral (on version 4P)
- Ground fault current (resulting from 3 or 4 currents from active conductors)
- Phase/phase and phase/neutral voltages for the tetrapolar model
- Indication of the phase rotation direction
- Network frequency
The trip unit can be configured to use an inverse phase rotation as a phase
sequence reference (see § 3.3.10). This configuration is performed from the
HTD210H panel display or the HTP610H configuration tool.
Electrical variable Symbol used
Version
3 P
Version
4 P
Phase or neutral RMS I1, I2, I3, IN
X
(except
IN)
X
Ground RMS (three-phase system
with neutral)
IG
– X