Unitron UDC-420 28V DC Aircraft Rectifier (GPU)
Manufacturer: Unitron
Part Number: UDC-420M
Condition: New
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The new and reliable way to power your aircraft is the Unitron UDC-420. 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
- 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
| 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 |
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.
