Unitron UDC-420M 28V DC Aircraft Rectifier (GPU)
Manufacturer: Unitron
Part Number: UDC-420M
Condition: New
Warranty: 3 Year Limited Warranty - View Details
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✓ Operating manuals available online for purchased equipment
✓ Manufacturer CofC always available at no cost after shipping
✓ Operating manuals available online for purchased equipment
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The new and reliable way to power your aircraft is the Unitron UDC-420M. It is a 28V DC rectifier with 425 amps continuous and 1600 amps max for use in the hangar or ramp environment. This unit operates on 3 phase input voltage (50 hz or 60 hz).
Highlights and Benefits
- Digital touchscreen display
- Over voltage protection
- Under voltage protection
- Voltage regulation to 28.5V DC +/- 0.5 V at all times
- Output amperage can be limited to as low as 150 amps - fully adjustable
- Line drop compensation - accounts for voltage drop in supply cable
- Only unit to meet 18" fire code regulations
- Half the weight of competitors
Standard Features
- P55
- Certified to UL 1012
- Indoor/Outdoor (Hangar/Ramp)
- Use Automatic Input Line Monitoring
- 8000 Event Log / Diagnostics
- TCP/IP/Ethernet Interface (Modbus)
- 10% Power Regulation
- Internal Communication Ports - USB, RJ45 (Ethernet), RS485 (Modbus), & RS232
- External Communication Ports - RJ45 (Ethernet) & USB
- Emergency Power "OFF" Switch
- 18-Inch Hazard Area Clearance
- Voltage and Current Monitoring
- Elapsed Time Meter Access
- Front Panel Voltage Adjust
- Front Panel Summary Fault Indicators
- Input & Output Cable handle
- Input High Voltage Transient Protection
- Output Current Limit Adjust from 150 to full rated current
- Multi Language (Romanization) Display - English, French, German, Italian, Portuguese, Russian and Spanish, Others - Specify
Input
- Voltage: 208-240V and 380-480V, +/- 10%, 3 or 4 wire plus ground (Specify manual tap position at time of order)
- Frequency: 50 - 60 Hz +/- 10%
- Phase Rotation: Any
- Protection: Over/undervoltage, loss of phase, overcurrent, short circuit. Voltage transient protection IAW IEEE C62.41.1, Location Cat. B/C
- Inrush Current: No greater than 100% of full load current
Output
- Full Rated Load: 425 amps continuous
- Engine Start Capacity (10% duty cycle): Adjustable up to 1600 amps for 35 seconds or 2000 amps for 30 seconds
- Overload (10% duty cycle): 600 amps for 1 hour 1000 amps for 1 minute
- Voltage: 28 VDC, 2 wire, grounded negative
- Voltage Regulation
- 100% continuous rated load and +/-10% input voltage ; +/- 0.5%
- No load to rated load with nominal input voltage; AW ISO 6858 and MIL-STD-704F
- Overload with nominal input voltage; See start mode curves
- Voltage Adjust: 28 VDC +/- 10%
- Current Limit Adjust: 150A to full rated current
- Protection: Overload, short circuit, over voltage and safety disconnect
- Power Regulation: 10%
Environmental
- Acoustical Noise: 65 dBA maximum at 5 feet (1.5m)
- Temperature Range: -40 degrees C to +55 degrees C
- EMI/RFI: Compatible with aircraft systems
- Relative Humidity: 10 - 95%, Non-Condensing
- Ingress of Water: Type 3RX, IP55
Mechanical Specs
- Dimensions: See image on listing.
- Weight: 340 lbs (154kg)
- Enclosure: NEMA 3RX Corrosion Resistant
- Cooling: Forced Convection
Standards
- ISO 461-1/2 - Aircraft - Connectors for Ground Electrical Supplies
- ISO 1540 - Characteristics of aircraft electrical system
- ISO 6858 - Aircraft ground support electrical supplies
- MIL-STD-704F - Aircraft electric power characteristics
- MIL-STD-1472 - Human Engineering Design Criteria
Add-On Top Cable Rack Options Available for Longer Cable Lengths
- CR 1-12 (12" cable rack) - 180' max (option) of combined cable
- CR 1-9 (9" cable rack) - 120' max (option) of combined cable
- Cable handle (standard in unit) 120' of combined cable
| Alternate Models | |
|---|---|
| 400 | Alternative PN |
| 600 | Alternative PN |
*This list is for general reference only and may not be entirely acurate for all aircraft. Please confirm all equipment meets the requirements of your aircraft with the owners/maintenance manuals prior to purchasing or using with your aircraft.
| Shipping Information | |
|---|---|
| Pkg. 1 Weight | 780 lbs. |
| Pkg. 1 Dimensions | 56 in. x 53 in. x 52 in. |
| Pkg. 1 Type | Crate |
| Freight Class | 85 |
| Freight NMFC | 62900 |
| Schedule B | 8504.40.9540 |
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Servicing
We service the UDC-420M and other items like it at our facility.
Parts
We sell parts for the UDC-420M and other items like it at our facility. Not sure exactly what part you need? Just describe it or send us a photo and we will research it for you.
Renting
We provide short-term and long-term rentals for the UDC-420M. We will ship the item directly to you and arrange for pickup at the end of your lease.
Sell or Trade-In
We can purchase your used UDC-420M (or similar GSE items like it) and apply it as a credit for new GSE, or buy it outright directly.
CUSTOMER REVIEWS
4/5
10/23/2019
Excellent power cart. Very clean DC output and stable voltage under load. Only disappointment is something better needed for winding up output cord. A side mounted rack would work much better to store the output cable assy.
4/5
5/23/2019
Ours did not come with the top cable cage, which would have been nice to keep the input cable from falling off the top of the unit. Over all the unit works as expected. This is the second large end item we have purchased from CGSE, and my experience there will be more.
5/5
4/13/2019
Great GPU, was exactly as described. I really like the controls on this units also. We use this on a Phenom 300 and have no issue with the proper voltage. It has very easy adjustments.
5/5
4/11/2019
I have use many different types/sizes of GPU and this unit by far is the best. Our Line Services Department is growing and the new hires are very easily trained on proper use. We did not buy it with the top rack and that is the only option I wish we had purchased.
5/5
4/10/2019
We are very happy with the unit. Our clients are also very impressed with it. It is being used in the hanger and also on the ramp very effectively.
5/5
11/9/2018
We ordered two New units for our new flight department. From day one speaking with John I knew we had come to the right place. Our units arrived on time and in perfect condition.
5/5
8/28/2018
This is a great power cart! It provides clean stable power for the most advanced aircraft. It's very well built and easy to use. I definitely recommend it.
5/5
6/30/2018
Great for running A/C in hangar. Well made and supported. Front display provides tons of info. Cables wrap on handle making it easy to move. Using with Citation in private hangar.
