Technical Documentation
Rev. 01
Power Factor Regulator
BLR-Q(U)
Page 16 of 39
The selection can also be done manually by pushing the ◄► button. The types, "U=L-N" or "U=L-L" are
available.
2.4.21.5 SYNCHRONISATION FREQUENCY
For a high precision of the measurement, the sampling rate has to be synchronized to the frequency of the
grid. Caused by commutation notches of mainsvoltage it is possible that the automatic synchronizing will not
work reliable. This creates failures in measurement. To avoid these problems, the following settings can be
done:
Automatic synchronizing:
For best measurement results, when mainsvoltage is without commutation notches.
FIX-50HZ:
For a safe operation at 50Hz grid with bad mains quality.
FIX-60HZ:
For a safe operation at 60Hz grid with bad mains quality.
2.4.21.6 PHASE COMPENSATION
The phase compensation enables the user to connect the current- and voltage measurement channels in
any way. This compensation angle complies with the phase angle between connected active current and
voltage. The following table shows the settings for some different connection types.
This setting has to be
made correct, because otherwise correct regulation is not possible! If the current transformer is
connected inverted, additionally a phase compensation of 180° has to be respected.
Voltage
L1-N L2-N L3-N L1-N
L2-N
L3-N
L1-N
L2-N
L3-N
Current transformer L1
L2
L3
L2
L3
L1
L3
L1
L2
Connection
U=L-N U=L-N U=L-N U=L-N
U=L-N
U=L-N
U=L-N
U=L-N
U=L-N
Phase-Offset
0°
0°
0°
240°
240°
240°
120°
120°
120°
Voltage
L2-L3 L3-L1 L1-L2 L2-L3
L3-L1
L1-L2
L2-L3
L3-L1
L1-L2
Current transformer L1
L2
L3
L2
L3
L1
L3
L1
L2
Connection
U=L-L U=L-L U=L-L U=L-L
U=L-L
U=L-L
U=L-L
U=L-L
U=L-L
Phase-Offset
0°+90° 0°+90° 0°+90° 240°+90° 240°+90° 240°+90° 120°+90° 120°+90° 120°+90°
2.4.21.7 V-TOLERANZ MIN
The setting has to be done in percent related to the nominal voltage. If the measurement voltage falls below
the adjusted limit, all active steps are switched off and the regulation stops.
2.4.21.8 V-TOLERANZ MAX
The setting has to be done in percent related to the nominal voltage. If the measurement voltage exceeds
the adjusted limit, all active steps are switched off and the regulation stops.
2.4.21.9 COUNTDOWN START AI
YES = after starting BLR-Q(U), a countdown is running. During this countdown it is possible to start AI auto-
matic initialization by pushing <Enter>.
NO = the countown is not shown. To start AI, you have to choose Quickstart SETUP.
2.4.21.10 TEMP. OFFSET
The temperature offset allows correction of temperature reading in a range -10°C to +10°C.
