4 8-10 kVA, 50/60 Hz (1-phase input) &
8-15 kVA, 50/60 Hz (3-phase input)
P-164000341
User's Guide Revision 1
Figure 2-1: Marine UPS units 8-15 kVA type approved models
2.2 Active-Front technology
Traditional input THD filters are no longer needed with this UPS product. The build-in advanced
rectifier technology of UPS modules provides perfect sinusoidal input power quality at 0.99 input
power factor with harmonic content less than 5% THD(i). This leads to more reliable total system
operation and savings in generator and transformer sizing as losses in the windings are minimised.
Due to the active front rectifier, the UPS is comparable to a clean resistor load from the mains
perspective. Thus, the high input power factor provides minimised cabling and fusing costs due to no
reactive power consumption.
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