MGE UPS Systems
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MGE UPS Systems
Eclipse Plus 250 User’s Manual
page 7
Thank you for your purchase of the Eclipse
Plus 250 "UPS" from MGE. The Eclipse
Plus 250 "UPS" will provide many years of
accurate, trouble-free power protection for
your PC and/or other device(s). Please
read this manual fully, to familiarize yourself
with the safety and many other features of
the Eclipse Plus 250 product.
MGE UPS Systems
MGE, one of the largest UPS manufacturers
in the world, has a power protection solution
for every power problem. Our product range
includes UPSs 220 VA to over 4.5 MVA in
single and three phase configurations.
Other products include Power Management
Software, DC to AC inverters, line
conditioners and isolation transformers.
Contact your sales representative today for
additional information about MGE’s other
fine products. Our web address is:
www.mgeups.com
Why the Need for Uninterruptible Power?
PCs and other electronic devices, due to
their design, are subject to the effects of
power outages or short interruptions. They
do not store sufficient energy to overcome
outages or short interruptions and these
events occur on a daily basis. Any
interruption of the utility power will stop the
operation of a computer and cause loss of
data, potential hardware damage and
inconvenience.
A "UPS" is an uninterruptible power supply.
The UPS has an internal battery to provide
power back-up when the utility power is lost
or a short outage occurs. In addition, the
Eclipse Plus 250 UPS provides surge
protection from indirect lightning strikes,
power surges and short high voltage
transients (spikes) created by machinery or
common office equipment. A fax/modem
suppressor with cable is provided with every
MGE Eclipse Plus 250 UPS to also protect
the incoming data line to the PC.
Theory of Operation
Eclipse Plus 250 is an off-line or stand-by
UPS which normally operates in the bypass
mode. Surge suppression and filtering are
also provided in this mode.
The UPS transfers the load quickly to the
battery when a power failure occurs. If the
power returns before the battery is
exhausted, the operation returns to normal
and the battery is recharged.
The Eclipse Plus 250 UPS is comprised of
three major systems: the inverter, the
battery charger/ battery and the bypass.
All logic and supervision in the UPS are
provided by a state-of-the-art micro-
controller.
Inverter
The inverter is the heart of the UPS and
inverts direct current (DC) from the battery
into alternating current (AC) at 120 volts.
The DC voltage from the batteries (12 volts
DC) is switched on and off at a high
frequency and transformed to a higher
voltage (DC to DC conversion). After
conversion, the high voltage is converted
into a pseudo-sine wave by a pulse width
modulated (PWM) inverter to 120 volts AC
RMS. This unique MGE technique,
eliminates all bulky 60 HZ components and
reduces size, heat, and greatly enhances
reliability.
Battery Charger/battery
The battery charger maintains the battery
and the battery provides the source of back-
up energy when a power failure occurs.
The battery charger converts 120 volt AC
utility power to filtered and regulated DC
specific for battery charging. The battery is
a recombinant, sealed, lead acid-type which
provides the high current required for UPS
use and long life. It requires no additions of
water during its life.
Bypass
The bypass is the electro-mechanical
hardware providing a transfer to or from the
inverter. This is done rapidly and
synchronized to the utility power sine wave
in order to provide continuity to the PC and
not cause a re-boot.
Thank You!
Notes
