RBU100H operation manual
8 Maintenance and hardware diagnostics
-27-
Time
Operational principle
Storing time less than
1 year
Operation without charging
Storing time 1-2
years
Connect with the power for 1 hour before first ON command
Storing time 2-3
years
Use power surge to charge for the RBU
• Add 25% rated voltage for 30 minutes
• Add 50% rated voltage for 30 minutes
• Add 75% rated voltage for 30 minutes
• Add 100% rated voltage for 30 minutes
Storing time more
than 3 years
Use power surge to charge for the RBU
• Add 25% rated voltage for 2 hours
• Add 50% rated voltage for 2 hours
• Add 75% rated voltage for 2 hours
• Add 100% rated voltage for 2 hours
The method of using power surge to charge for the RBU:
The right selection of Power surge depends on the supply power of the RBU. Single phase 220V
AC/2A power surge applied to the RBU with single/three-phase 220V AC as its input voltage. The
RBU with single/three-phase 220V AC as its input voltage can apply Single phase 220V AC/2A power
surge. All DC bus capacitors charge at the same time because there is one rectifier.
High-voltage RBU needs enough voltage (for example, 380V) during charging. The small capacitor
power (2A is enough) can be used because the capacitor nearly does not need current when
charging.
The operation method of RBU charging through resistors (LEDs):
The charging time is at least 60 minutes if charge the DC bus capacitor directly through supply power.
This operation is available on normal temperature and no-load condition and the resistor should be
serially connected in the 3-phase circuits of the power supply:
380V driven device: 1k/100W resistor. LED of 100W can be used when the power voltage is no more
than 380V. But if used, the light may be off or weak during charging.
Line supply
3 x 1K/100W
L1
L2
L3
U
V
W
Frequency inverter
400V
Figure 8-1 Illustration of the driven device 380V
Summary of Contents for RBU100H
Page 1: ...RBU100H Regenerative Energy Unit...
Page 33: ...66001 00144...