An Electronic Circuit Breaker Unit/Power Distribution Unit has power inputs from different sources and power outputs to feed the loads. The 28VDC Electronic Circuit Breaker Unit/Power Distribution Unit has voltage and current measurement units. It can also perform detailed tasks such as soft start, over-current protection, short circuit protection, sequential opening and energizing the desired loads for power saving according to working scenarios.
Each Electronic Circuit Breaker Unit/Power Distribution Unit is designed with fail-safe logic that provides a configuration that allows the utilization of input power to the appropriate loads, ensuring that power is retained on essential loads. It has a redundant design that allows the Electronic Circuit Breaker Unit/Power Distribution Unit to prevent single-point failures. Electronic Circuit Breaker Unit/Power Distribution Unit also utilizes WoW (Weight on Wheel) logic, extensive Built-In-Test capabilities and I2T logic.
PD100190002AA | PD100370002AA | PD100190008AA | PD100370008AA | |
Configuration Abilities | • Overcurrent configuration for • Load shedding • Sequential Opening • I2T limits • Output Channel ON/OFF Control • Soft start time | • Overcurrent configuration for • Load shedding • Sequential Opening • I2T limits • Output Channel ON/OFF Control • Soft start time | • Overcurrent configuration for • Load shedding • Sequential Opening • I2T limits • Output Channel ON/OFF Control
| • Overcurrent configuration for • Load shedding • Sequential Opening • I2T limits • Output Channel ON/OFF Control
|
Monitoring | • Load Current • Input Voltage • Output Voltage • Each Channel Fault • Temperature | • Load Current • Input Voltage • Output Voltage • Each Channel Fault • Temperature | • Load Current • Input Voltage • Output Voltage • Each Channel Fault • Temperature | • Load Current • Input Voltage • Output Voltage • Each Channel Fault • Temperature |
Protections | • Short Circuit • Overcurrent • Overvoltage • Under voltage • Reverse voltage • Soft start • I2T • Channel Lock Abilities | • Short Circuit • Overcurrent • Overvoltage • Under voltage • Reverse voltage • Soft start • I2T • Channel Lock and Block Abilities | • Short Circuit • Overcurrent • Overvoltage • Under voltage • Reverse voltage • I2T • Channel Lock Abilities | • Short Circuit • Overcurrent • Overvoltage • Under voltage • Reverse voltage • I2T • Channel Lock Abilities |
• Power Distribution Unit
• Electronic Circuit Breaker
• Current and Voltage Monitoring
• Essential and Non-Essential Load Prioritizing
PD100190002AA | PD100370002AA | PD100190008AA | PD100370008AA | |
Output Channels | 48 Channels (12x10A & 12x20A & 24x5A) | 48 Channels (12x10A & 12x20A & 24x5A) | 16 Channel (4x20A & 12x4A) | 16 Channel (4x20A & 12x4A) |
Input Voltage Channels | 2 | 2 | 1 | 1 |
Total Current | 300A | 320A | 120A | 120A |
Discrete Inputs | 3 x GROUND/OPEN 2 x 28VDC/OPEN | 12 x GROUND/OPEN 6 x 28VDC/OPEN | 8 x GROUND/OPEN 4 x 28VDC/OPEN | 8 x GROUND/OPEN 4 x 28VDC/OPEN |
Discrete Outputs | 2 x GROUND/OPEN 1 x 28VDC/OPEN | 4 x GROUND/OPEN 2 x 28VDC/OPEN | 4 x GROUND/OPEN 2 x 28VDC/OPEN | 4 x GROUND/OPEN 2 x 28VDC/OPEN |
Communications | 1 x Ethernet 1 x RS-485 (Half Duplex)
| 1 x MIL-STD-1553B 1 x RS-485 (Half Duplex)
| 1 x Ethernet 1 x RS-485 (Half Duplex)
| 1 x MIL-STD-1553B 1 x RS-485 (Half Duplex) |
Physical Address | Up to 32 Address | Up to 32 Address | Up to 32 Address | Up to 32 Address |
PD100190002AA | PD100370002AA | PD100190008AA | PD100370008AA | |
Input Voltage Nominal | 28V | 28V | 28V | 28V |
Operating Voltage Range | 18V to 32V | 18V to 32V | 18V to 32V | 18V to 32V |
Output Voltage | 28V | 28V | 28V | 28V |
Dimension (L x W x H) (mm) | 341.3 x 275.2 x 100 | 341.3 x 275.2 x 100 | 165.7 x 236 x 39.8 | 165.7 x 236 x 101.2 |
Weight (g) | 6500 ± 500 | 6500 ± 500 | 1500 ± 200 | 1500 ± 200 |
• Operating Temperature: -40°C to +55°C
• Storage Temperature: -40°C to +85°C
• Operating Altitude: 45,000ft
• Atmospheric Pressure: 7.2 kPa to 108.3 kPa
• RTCA/DO-254
• RTCA/DO-160G
• MIL-STD-810G
• MIL-STD-461F
• MIL-STD-704F
TRL 7/9
In the aviation industry, a 28VDC Power Distribution Unit (PDU) is a critical component used to supply 28V DC (direct current) power to various aircraft systems and ground-based equipment. 28V DC is a common voltage used in aviation, particularly for aircraft electrical systems. This voltage is typically generated by the aircraft's battery or transformer rectifiers and is used to power essential systems, especially when the aircraft is on the ground or during maintenance.
The PDU allows for centralized power distribution to different aircraft systems. This simplifies power management, reducing the need for multiple power sources and ensuring that the systems receive the necessary power from a single, controlled point.
28VDC PDUs are used in flight simulators to replicate aircraft systems and provide the required electrical power for realistic simulation experiences. This is essential for pilot training, as simulators require a constant supply of stable power to operate avionics and other systems.
The 28VDC Power Distribution Unit (PDU) in the aviation industry plays an essential role in ensuring that critical aircraft systems and ground support equipment (GSE) remain operational, especially when aircraft engines are off or during maintenance. The 28VDC PDU provides stable, reliable, and regulated power to various systems like avionics, lighting, pumps, and communications, and often incorporates features such as circuit protection, redundancy, and power conditioning. It is vital for maintenance, testing, and aircraft ground support, making sure that systems work properly and safely during these operations.