I. GENERAL INFORMATION
INTRODUCTION:
The primary application of the ADI UPS system is to power PLC’s (Program-
mable Logic Controllers), weighing systems, strobe lighting and other elec-
tronic equipment/controls for steel manufacturing plants. The UPS changes the
available 250 volt DC buss to 60 cycle AC power and is a no-break or
uninterruptible system. As the DC input to the UPS has brief outages, the AC
output will remain on uninterrupted. This is accomplished by means of an inter-
nal battery which backs-up the input buss. Steel mills and smelters present an
especially hostile environment to electronic equipment, with high levels of air-
borne particulates, temperature extremes, vibration/mechanical shock, and
high voltage spikes on the 250 volt buss.
The ADI system utilizes patented construction methods, high energy transient
voltage input protection, and an aluminum NEMA 4X enclosure.
SPECIFICATIONS: ADI-250/900UPS
Output Power- 900 Watts continuous.
DC Input- 190 to 300V, 250 nominal at up to 5 Amperes.
AC Output- 120V, 60Hz +0.05% quasi sine-wave at up to 7.5 Amps.
Efficiency of Conversion- up to 80%.
Operating Temperature- 0
0
to 40
0
C (32
0
to 104
0
F).
Transient Surge Protection- will hold a high input voltage pulse to less
than 600V with 200 Amperes flowing for 100 u seconds-370 watt-
seconds peak.
Battery hold-up time- 10 minutes at full load.
Battery recharge time- 5 hours.
Battery float voltage- 27.6VDC @ 20
0
C.
Enclosure- 24"W x 24"H x 8"D continuous hinge aluminum NEMA type
4X with swing-out internal control panel.
Weight- 80 LBS. excluding batteries.
FEATURES:
PROTECTION:
Converter Low Input Voltage- 5 second surge delay and shutdown at
190VDC with audio alert; auto reset at 205VDC; AC output continues
until Inverter Low Input Voltage shutdown (low battery).
Overload- 5 second surge delay and shutdown; manual reset by toggle
of on/off switch.
High Temperature- Automatic shutdown protects semiconductors and
transformers; auto reset.
24V Battery- internal 125A fuse.
AC Output- control panel mounted 20A breaker.
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