| Feature Details
Universal Input
The
GUPS 2400A AC input model provides 2400 VA/1920W of 115 VAC, 60 Hz power.
It automatically selects between two input ranges of 85 to 140 VAC and
170 to 280 VAC, while accepting any frequency from 45 to 450 Hz, and
provides 115 VAC, 60 Hz output power.
The
GUPS 2400A-104 variant providing a three phase input from 159-232 VAC
line to line at frequencies from 370-430 Hz is also available.
The
GUPS 2400U universal output model provides 115 VAC, 60 Hz standard U.S.
power or 230 VAC, 50 Hz international power (user selectable). Without
operator intervention, it automatically selects between two input ranges
of 85 to140 VAC and 170 to 280 VAC, while accepting any frequency from
45 to 450 Hz.
The Elgar GUPS is tolerant of variable power associated with "soft" sources
such as engine/motor generators. Stable output power is provided, without oscillating between
generator and battery input, regardless of how the input power varies within the allowed ranges.
This prevents battery discharge and ensures that battery power is available in the event of
generator failure. Soft-start of the UPS input rectifier limits the inrush current during start-up,
precluding fluctuations in the AC source voltage that could affect other loads.
Precise and Stable Output
The
output is precisely regulated, providing a low distortion sine waveform.
Protection of the critical load is maximized because it is continually
supplied by the online inverter; the output is never dependent on the
condition of the AC input, and there are no switching transients.
Low
output impedance allows driving non-linear loads that draw currents
with high crest factors, such as computer power supplies. The 200% overload
rating of the inverter, with a greater than 3:1 crest factor, provides
an enhanced capability to supply the start-up inrush current of such
loads. High frequency power conversion technology is utilized for fast
dynamic response to changing load conditions. Continuous overload and
short circuit protection ensure reliable operation.
A shielded transformer is used to galvanically isolate the output from
the AC input, and battery. The output is further protected with suppression
networks that absorb high energy transients and surges that occur on the AC input.
EMI filtering and the shielded isolation transformer provide transverse-mode and
common-mode attenuation of electrical noise.
UPS
integrity is determined through a self test that is performed automatically
during start-up. Proper operation is ensured prior to energizing the
critical load. After start-up, this function can also be manually selected
by the user from the front panel.
Communications Interface
An
RS 232 communications interface provides information to the host system
about operating status and UPS parameters such as voltages and currents.
Isolated relay contacts are available for remote annunciation of loss
of AC input power and impending shutdown during operation from the battery.
BATTERIES
The GUPS 2400A and GUPS 2400U include a drawer-mounted internal battery
module that is removable from the front panel without the use of tools; this allows
servicing of the battery without removing the UPS from its
rack.
Battery life is maximized with automatic microprocessor controlled equalization
and temperature compensation during charging.
For the GUPS 2400A and GUPS 2400U, an optional external rackmounted battery
pack increases the backup time to 18 minutes at full rated load; multiple packs further extend the backup.
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