2nd_AMENDED_Purchase_Description_-_Electrical_Ground_Power_Units_.docx

Purchase Description – AMENDED *POWER INPUT MUST BE 440-480V/60Hz

1. MO AVCRAD requires (2 each) Electrical Ground Power Units to support the MO AVCRAD Maintenance program that supports a 14 State region providing DEPOT level maintenance to 31 support facilities aircraft that is brought into the MO AVCRAD facility. The (2 each) Electrical Ground Power Units must be able to support multiple aircraft platforms. For example, some of the uses of the (2 each) Electrical Ground Power Units will be to provide electrical power to the aircraft for maintenance testing, troubleshooting, adjusting, and other operations; and will also provide power for starting.

2. Electrical Ground Power Units must be capable of repeated use. The Electrical Ground Power Units must be well designed, with minimal maintenance and up keep. The Electrical Ground Power Units must be light-weight enough to move efficiently, but able to safely and repeatedly perform its function. The Electrical Ground Power Units should be capable of supplying multiple amperages and voltages to service multiple aircraft platforms. Procurement should be from a company that has a proven track record of backing their product and providing service, readily available parts, and support for future years. When it arrives on site, the Electrical Ground Power Units must be mission ready and backed by a multi-year warranty.

3. The minimum specification and needs that are required to meet the standards of MO AVCRAD requirements are as follows:

A. Unitron UFC-75M, or equivalent:

B. See reference visual display

a. Unit shall operate with 60Hz 3 phase power.

b. Unit shall be capable of operating indoors and outdoors, in all weather conditions.

c. Unit shall have automatic input line monitoring.

d. Unit shall have an advanced, multifunction digital display.

e. Unit shall be equipped with USB, Ethernet, RS 485, and Serial Port.

f. Unit shall be equipped with JBus/Modbus Protocol.

g. Unit shall be equipped with 15% Automatic Line Drop Compensation (ALDC).

h. Unit shall be equipped with an Emergency Power Off switch (EPO).

i. Unit shall be No Break Power Transfer (NBPT) compatible.

j. Unit shall be equipped with I/O Voltage, Current and Frequency Monitoring and display.

k. Unit shall be equipped with an elapsed time meter.

l. Unit shall be equipped with front panel mounted fault indicators.

m. Unit shall be equipped with Input and Output cable racks.

n. Unit shall have pneumatic ramp tires.

o. Unit shall be designed with input high voltage transient protection (lightning strikes) with front panel preventative maintenance annunciation.

p. Unit shall have a multi-language display.

q. Unit shall have at least two (2) 100 foot AC input power cable.

r. Unit shall have at least two (2) 60 foot DC power output cable.

s. Unit shall have an Output Universal Aircraft Safety Interlock Circuit Disconnect.

t. Unit shall have front panel AC and DC voltage adjustments.

u. Unit shall be capable of at least 300% overload for 6 seconds.

v. Unit shall be painted white, with easily readable instructions and decals.

w. Unit shall have a Ground Fault Monitor.

x. Unit shall meet the following specifications/standards:

1. EN 61000-6-2 Electromagnetic compatibility immunity standards for industrial environments.

2. EN 61000-6-4 Electromagnetic compatibility emission standard for industrial environments.

3. 2006/95/EC Low Voltage Directive.

4. ISO 1540 Characteristics of Aircraft electrical system.

5. ISO 6858 Aircraft Ground Support electrical supplies.

6. SAE ARP 5015 Ground Equipment 400 Hz ground power performance requirement.

7. MIL-STD-704F Aircraft electrical power characteristics.

8. MIL-STD-1472 Human Engineering Design Criteria.

9. DFS-400 Specifications of 400 Hz aircraft power.

y. Unit shall have an output rating of no less than 75 kVA.

z. Unit shall have a DC power rating of at least 600 amps, continuous.

aa. Unit shall have an adjustable engine start capacity up to 2000 Amps for 20 seconds at a 10% duty cycle.

ab. Unit shall have a DC Output voltage of 28 VDC, 2 wire, grounded negative, adjustable plus or minus 10%.

ac. Unit shall be protected from overload, short circuit, over voltage and safety disconnect.

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