OnLine Power Mini Power Wave - Manual (Page 10)

6005-100 Rev A
1
1. Introduction
The information provided in this manual covers single phase 200-490watt, uninterruptible power systems,
their basic functions, operating procedures, and emergency situations, also including information on how to
ship, store, handle and install the equipment. Only detailed requirements of the UPS units are described
herein, and installation must be carried out in accordance with this manual. Electrical installations must also
carefully follow local legislation and regulations. Only qualified personnel should conduct these installations
as failure to acknowledge electrical hazards could prove to be fatal.
Important Notice:
To be sure that the UPS will be open correctly, the following items should be noticed:
a. Read instructions carefully before operating the UPS.
b. UPS power connect instruction should be followed.
c. Please don ’ t open the case to prevent danger.
d. If the UPS will be stored for long period, the battery must be charged once every 90 days.
e. Retain the load within the rating of UPS to prevent faults.
f. Handle unusual events according to the trouble-shooting guide.
g. Keep the UPS clean and dry.
2. System description
Several different kinds of sensitive electrical equipment stay protected by a UPS (Uninterruptible Power
System) including computers, workstations, process control systems, telecommunications systems, sales
terminals, other critical instrumentation, etc. The purpose of the UPS is to protect these systems from poor
quality utility power, complete loss of power, or other associated problems.
Electrical interference abounds in many forms causing problems in AC power, from lightning, power
company accidents and radio transmissions to motors, air conditioners, and vending machines, among
others. So protection of sensitive electrical equipment is vital to protect against power outages, low or high
voltage, slow voltage fluctuations, frequency variations, differential and common-mode noises, transients,
etc.
In order to prevent power line problems reaching critical systems causing damage to software, hardware
and causing equipment to malfunction, the UPS helps by maintaining constant voltage, isolating critical load
output if needed, and cleaning the utility AC power.
2.1 General description
As a double conversion on-line UPS, it is able to supply uninterrupted, clean single-phase power to your
critical systems while keeping batteries charged continuously, regardless of whether utility power fails or
not.
In event that a power failure lasts longer than a UPS backup time, it will shut down avoiding battery
discharge, and as soon as voltage comes back, the UPS will automatically charge up and start recharging
the batteries.
As shown in fig.1 block diagram:
An input filter reduces transients on the mains
For maintaining full battery charge, AC-power is rectified and regulated in the rectifier feeding power to
the inverter and battery converter.
DC power is converted to AC in the inverter passing it on to the load.
Power is maintained from the battery during a power failure.
The converter increases voltage appropriately for the inverter.