P-164000341 8-10 kVA, 50/60 Hz (1-phase input) &
8-15 kVA, 50/60 Hz (3-phase input)
5
Revision 1 User's Guide
The low harmonic currents are due to high input power factor and provide the benefits:
• No additional losses in wires and cables
• No extra heating of transformers and generators with shortened service life
• No false circuit breaker tripping and malfunction
• No erratic operation of computers, telecommunication, monitors, electronic test equipment etc.
• No Resonance with power factor correction capacitors
2.3 Advanced Battery Management (ABM)™
The ABM monitors the status of the battery and charges it only when the battery needs charging.
This is the key to long battery life with the ABM due to low generation of corrosion inside the battery.
It also monitors that the load never crashes because of bad or defected battery.
The main cause for corrosion is current flowing through battery. The more current going through
battery, the shorter the battery life. Current flows through battery when it is discharged or charged.
There is very little that can be done for discharging, because it depends on number of power outages
in utility line.
The ABM is very valuable feature since most of the time battery does not need any charging. The
charging is controlled and initiated on the following occasions:
• When turning the unit on
• After maximum 28 days without charging
• If the open cell voltage decreases below predetermined voltage level
Hence, the function of ABM system is to prolong the battery life considerably compared to traditional
system that uses float-charging technology. This means that there is no current going through
batteries all the time and causing corrosion. In a traditional online UPS the inverter also causes ripple-
current to be fed to batteries causing corrosion.
2.4 Hot Sync® technology
The UPS product features U.S. #5,745,365 patented paralleling technology that provides N+X
redundancy without introducing a single-point-of-failure. The products utilising the Hot Sync are
completely autonomous and the only thing common among them is the critical output power bus.
The Hot Sync is 100% mathematical firmware that makes it more reliable than traditional paralleling
techniques. Because the solution is implemented intrinsically, and Hot Sync is always active, the UPS
modules do not know whether or not they are even in parallel.
A parallel UPS system means the linking together of two or more UPS units in parallel so that in the
unlikely event one fails the other can automatically take up the load. Traditionally a parallel redundancy
configuration is achieved by having a random or fixed master-slave relationship among the UPS units.
This master logic gives out individual commands to all the slaves units. This master logic gives out
individual commands to all the slaves units, but if the master logic or communication to slaves fails, it
can lead to a single-point-of-failure for the whole system, and cause the whole UPS system to be in
trouble.
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