Operation manual
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GENERAL DESCRIPTION
Introduction
You have just purchased an Uninterrupted Power Supply (UPS) System.
In order to get highest efficiency from your product and to ensure a safe use, we recommend that you strictly read
and retain this operating manual for later reference. In addition, do not hesitate to contact customer service for
more detailed information and/or assistance (sac@zigor.com).
The UPS will be connected between the load and the grid. The purpose of this device is to provide the load with
controlled power for each load and input supply condition. The power provided by the UPS will be protected from
all variations in grid´s voltage and frequency by supplying electrical power to the load in a stable, controlled and
disturbance-free manner.
ZGR TOWER PRO 1-3 KVA
connected to the single phase network, and supply an output voltage which is also single phase. These consist of
an electronic high frequency rectifier with active power factor corrector, which supplies a inverter stage, a battery
charging circuit and an output filter that provides quality, disturbance/harmonic-free output.
In case of a mains failure, the load supply is guaranteed by the battery power supply for a backup time that varies
depending on the capacity of batteries used. If mains voltage is recovered during the backup time, UPS will return
to normal mode automatically and continue supplying power to loads. Meanwhile, batteries are charged as well.
In the case of an overload or breakdown of one of the UPS stages, the UPS has a bypass that guarantees the
power supply to the load uninterruptedly. Once overload is recovered or the breakdown is repaired, load is
transferred back to normal mode.
A microprocessor is responsible for controlling the different circuits and for presenting the UPS status through a
liquid crystal display (LCD) and LED indicators.
The UPS can be monitored remotely via a computer by using several communication protocols.
System used in ZGR TOWER PRO 1-3 KVA uninterruptible power supply is shown in the following simple block
diagram.
Fig. 2-1 Simplified diagram of ZGR TOWER PRO 1-3 KVA
INPUT
RECTIFIER
& CHARGER
INVERTER
BYPASS
BATTERY
OUTPUT