Wärtsilä JOVYTEC L 6kVA
– 10kVA BAX 3297_en
- 7 -
P L E A S E N O T E !
The output of the UPS unit also carries a voltage in the case of a power failure!
This is why the installation engineer must mark the outputs and power
sockets on the UPS unit clearly according to EN 62040.
Input
Battery
Rectifier
Inverter
Ouput
Manual Bypass
Input
Battery
Rectifier
Inverter
Output
Manual Bypass
2.
Description of the System
Power supply devices of this model are particularly suited for supplying important power consumers in
industry and the office such as personal computer, computer-controlled devices, PLCs and similar
equipment. The output voltage is sinusoidal. In normal cases the attached consumers are supplied with
power from the installed rectifier and installed inverter from the mains power supply network (online
operation). Any disturbances in the mains such as voltage peaks, voltage drops, harmonic distortions or
noises etc. are filtered out. The installed battery is constantly being charged up by means of a charging
rectifier with a charge preservation charging stage which is gentle on the batteries.
3.
General description of the function
Normal operation
During normal operation the battery and the inverter are supplied with power via a rectifier (online operation).
The change-over from alternating voltage to direct voltage and back to alternating voltage again is achieved
by a sinusoid output voltage with a low distortion factor. The direct voltage is also needed for charging the
battery. The inverter supplies the attached consumers.
Figure 1: Block diagram
“Normal operation“
Power failure
In the case of a power failure, the energy needed by the inverter is taken from the battery. The output voltage of
the inverter is still available.
Figure 2: Block diagram
“Power failure“
