SurgeX UPS-3000-OL - Manual (Page 7)

© SurgeX | Technical Support: 800-645-9721 | surgex.com Page 6
On-Line UPS User Manual
Models: UPS-1500-OL, UPS-2000-OL, UPS-3000-OL
SX-BDL-1500, SX-BDL-2000
3. Introduction
The information provided in this manual covers single phase SX-BDL-1500, SX-BDL-2000, UPS-1500-OL, UPS-
2000-OL, UPS-3000-OL uninterruptible power systems, their basic functions, operating procedures, options
available and emergency situations. It also includes 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 installation 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.
4. Product Description
Many different kinds of sensitive electrical equipment can be protected by an Uninterruptible Power Supply
(UPS) 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 exists in many forms, causing problems in AC power, from lightning, power company
accidents and radio transmission motors, air conditioners, and vending machines. Protection of sensitive
electrical equipment is vital to protect against power outages, low or high voltage conditions, slow voltage
fluctuations, frequency variations, differential and common-mode noise, transients, etc.
To prevent power line problems from reaching critical systems causing damage to software, hardware, and
equipment malfunctions, the UPS maintains constant voltage, isolating critical load output and cleaning the utility
AC power.
Double Conversion On-Line Technology
A double conversion on-line technology UPS provides completely isolated, clean, uninterrupted single-phase
power to your critical systems, while maintaining the batteries for their maximum potential. In the event that the
power failure lasts longer than the UPS backup time, the UPS will shut down avoiding battery damage. When
the input AC voltage returns, the UPS will automatically return online to recharge the batteries.
As shown in fig. 1 block diagram:
• An input filter reduces transients on the incoming utility.
• To maintain full battery charge, the AC input power is rectified and regulated in the rectifier feeding
power to the battery converter and inverter.
• 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.