The Uninterruptible Power System (UPS) shall be an expandable single phase, continuous duty, line interactive, single conversion UPS designed to supply reliable, clean regulated power for critical loads. The design shall incorporate an efficient ferro-resonant transformer, micro-processor controller, solid state PWM inverter and long lasting battery pack that provides immunity to all power line disturbances and power interruptions with no break in AC output power.

The synchronous inverter shall produce a true uninterrupted output in any mode of operation. A self diagnostic monitoring alarm system that continuously advises system status shall be provided.

2.0 INDUSTRY STANDARDS
The following standards shall apply:

2.1 UL Listed 1778 Standards for UPS.
2.2 CSA Certified.
2.3 FCC Article 15, Section J, Class A. Means it will not interfere with any other
        electronic device, including computers and phones.
2.4 IEEE 587 category B guide for surge suppression.
2.5 ANSI/IEEE C62.41 and .45 category A and B.
2.6 IEC555 Power Factor specifications.
2.7 CBEMA and ANSI C84.1. Must exceed the specifications and recommendations. 

3.0 INPUT SPECIFICATIONS

3.1 INPUT VOLTAGE
   120 208 240 VAC ,60 Hz.
   220 VAC, 50 Hz.

3.2 OPERATING RANGE
  +10% to -15% at full load.

3.3 KVA RATING
  3.1 kVA expanable to 3.5 kVA

3.5 kVA
  4.5 expandable to 5.0 kVA
  5.0 kVA
  6.0 kVA expandable to 7.5 kVA
  7.5 kVA

3.4 FREQUENCY RANGE
Must capture 57.5 Hz to 62.5 Hz.

3.5 POWER FCTOR
Must be self correcting to >0.95 (approaching unity).

3.6 INPUT HARMONICS
<5% THD (total harmonic distortion).

3.7 ATTENUATION
Spike attenuation shall be a minimum of 3000:1.

4.0 FUZZY RANGE CONTROL

The UPS shall utilize a Fuzzy Range Control that allows a wider range of input voltage
variation (up to +10% to -40%) of nominal as an inverse function of load. i.e. As the load
decreases the input band grows wider and more usable while maintaining the output
voltage at usable levels. Operationally this means the unit must not use battery power
during simple brownout conditions, conserving the batteries for severe power outages.

4.1 FUZZY RANGING
The input range switch points must be infinitely variable as the load decreases.
Input band with 25% load shall be +10% to -40% with an output regulation of +4%.
Input band with 50% load shall be +10% to -30% with an output regulation of +4%.
Input band with 75% load shall be +10% to -20% with an output regulation of +4%.

5.0 OUTPUT SPECIFICATIONS

5.1 OUTPUT VOLTAGE

120 VAC, 60 Hertz
120/208 VAC, 60 Hertz
120/208 VAC, 60 Hertz
220 VAC, 50 Hertz

Must provide a Sine Wave Voltage with maximum 3% harmonic distortion for any single harmonic. The output shall be rated for computer type loads with switch mode power supplies.

5.2 CREST FACTOR
Minimum 3.5 : 1.

5.3 K FACTOR
Must be rated K-30 or better.

5.4 POWER FACTOR
0.7 switch mode rated.

5.5 HARMONIC ATTENUATION
Load generated harmonics shall be attenuated 400% at the input.

5.6 LINE REGULATION
Better than +3%.

5.7 LOAD REGULATION
Better than +3%.

7.0 BATTERY

7.1 Run time listed at full and half load for each model number with extended
run times available beyond this standard.

3.1 kVA 8 minutes at full load, 19 minutes at half load
3.5 kVA 7 minutes at full load, 17 minutes at half load
4.5 kVA 9 minutes at full load, 21 minutes at half load
5.0 kVA 7 minutes at full load, 19 minutes at half load
6.0 kVA 11 minutes at full load, 27 minutes at half load
7.0 kVA 8 minutes at full load, 25 minutes at half load
7.5 kVA 7 minutes at full load, 21 minutes at half load

7.2 BATTERY TYPE
Must be sealed, maintenance free, gas recombinant, self venting, suspended electrolyte with no gel contaminant. Batteries must be factory tested with specific inverter.

7.3 BATTERY CHARGER
5 amp, two stage, not to exceed 25% of the amp hour rating.

7.4 RECHARGE TIME
3 hours to full charge.

7.5 BUSS VOLTAGE
Float 2.27 VPC, final 1.75 VPC.

7.6 LIFE
Batteries must have a Projected Life of 5 years service.

7.7 CAPACITY
The batteries shall be sized with the inverter to support the load at rated kVA with a 0.7 power factor.

8.0 PERFORMANCE

8.1 OVERLOAD CAPABILTY
125% for ten minutes.

8.2 SURGE CAPABILITY
150% of rated output without need of static bypass.

8.3 FREQUENCY STABILITY
+0.2 Hz.

8.4 INNER WINDING CAPACITANCE
.01 pF (primary to secondary coupling).

8.5 COMMON MODE NOISE ATTENUATION
Must be 120 dB or greater (106 : 1 ground noise attenuation).

8.6 TRANSVERSE MODE NOISE ATTENUATION
Must be 70 dB or greater (3160 : 1 line noise attenuation), (-3 dB at 1 kHz, -20 dB per decade).

8.7 REACTIVE POWER CORRECTION
Load at .6 pF must be corrected to >0.95 at input.(automatically self correcting).

8.8 EFFICIENCY & BTU/HR EMITTED

3.1 kVA minimum efficiency shall be 89% with 814 BTU/HRS emitted.
3.5 kVA minimum efficiency shall be 89% with 919 BTU/HRS emitted.
4.5 kVA minimum efficiency shall be 89% with 1200 BTU/HRS emitted.
5.0 kVA minimum efficiency shall be 89% with 1313 BTU/HRS emitted.
6.0 kVA minimum efficiency shall be 89% with 1432 BTU/HRS emitted.
7.0 kVA minimum efficiency shall be 89% with 1705 BTU/HRS emitted.
7.5 kVA minimum efficiency shall be 89% with 1611 BTU/HRS emitted.

9.0 DIMENSIONS

3.1,3.5,4.5,5 kVA Maximum Cabinet Dimension shall be 15"W x 29 3/4"D x 22 1/2"H
6,7,7.5 kVA Maximum Cabinet Dimension shall be 15"W x 29 3/4"D x 30 1/2"H

10.0 DISPLAY MONITORS AND DIAGNOSTICS

10.1 Digital, 3 digit, bright LED Display shall be provided to display the following system parameters:
Input Voltage 
Percent Battery
Output Voltage
Percent of Load

10.2 LED indicator lights shall be provided to indicate the following system status:
System On (Green)
System On Battery (Yellow)
Low Battery Warning (Red)
Alarm (Red)

10.3 LED indicator lights shall be provided to indicate the following system Alarms
(Red)
Low output High output
Overload Frequency fault
Over temperature Shorted SCR shutdown
Low battery shutdown Check battery
Output shutdown Inverter on
Low battery Remote/emergency power off shutdown

10.4 AUDIBLE ALARM
A switch selectable audible alarm shall be furnished.

11.0 COMMUNICATIONS INTERFACE

11.1 STATUS AND ALARM PORT

A status and alarm port shall be furnished for network protection and unattended, automatic shutdown for all LAN/WAN systems such as Novell, LAN Manager, OS/2 and others including UNIX and ZENIX operating systems.

11.2 SERIAL PORT
A full duplex ASCII, RS/232 Serial Port shall be provided for over 60 operating,
diagnostic and performance characteristics.

12.0 ENVIRONMENTAL

12.1 ISOLATION
Isolation shall be per NEC article 250-5d, and comply with this standard that specifies a separately derived power source.

12.2 OPERATING TEMPERATURE
Operating Temperature is 0° (32° ) to 40° (105° ) Celsius (F) without derating in

11.3 STORAGE
Storage Temperature shall be 20 to 50° Celsius.

11.4 HUMIDITY
Relative humidity 95% non condensed.

11.5 ELEVATION
5,000 feet, 1,500 meters.

12.0 MTBF

12.1 SYSTEM
Total System MTBF shall be a minimum of 100,000 hours per MIL spec standard 217E.

12.2 TRANSFORMER
The Transformer MTBF shall be a minimum or 200,000 hours.

12.3 MTTR
The Mean Time to Repair shall be less than one hour.

13.0 POWER DISTRIBUTION