JOVYATLAS
UPS-division
Operating manual
POWERMASTER
M
MIL BAX 3330E page 5
2.
Description of the system
This power supply system out of the
POWERMASTER M
series is an especially build ups for ship use. The
ups is qualified for power supply of important consumers in ship use, such as personal computer, computer-
controlled devices and similar units. The output voltage is sinusoidal. In normal operation the connected load is
fed in online operation by the mains through the internal rectifier and inverter. Mains disturbances such as
voltage-variations, distortions, noise etc. are filtered. The internal battery is permanently charged in a careful
way by the charging rectifier in trickle charge mode
3.
Description of the functions
Normal operation
In normal operation the battery and the inverter are fed by the rectifier (online-operation).
The conversion of the AC-voltage into DC-voltage and back into AC-voltage ensures a sinusoidal output
voltage with a low distortion. The DC-voltage is also necessary for the battery-charging. The inverter feeds the
connected loads.
Mains failure
In case of mains failure the inverter is fed by the battery.
At the output the output voltage of the inverter is still available.
Inverter failure or overload
In case of inverter failure or overload the load is switched back to the mains.
In case of mains failure the consumers are not supplied in that case any longer.
