Power Distribution Units

Three military power distribution units (PDUs)
The increasing electrical demands of military vehicles, in both total power managed and the number of consuming devices, have rendered electrical architecture a critical design element. Piedrafita DefPower has a unique knowledge on solid-state architecture design which has enabled its ability to design customer specific products that replace and improve the current relay and fuse boxes with high-performance proven technology.

The solid-state technology-based electronic architecture results in compact, lightweight, and fully user-configurable power distribution units. Their certification across a range of criteria such as electromagnetic compatibility (EMC) profile make them ideal for meeting the strictest military certifications and ensuring optimal performance in the most demanding environments.

One of the standout features of Piedrafita DefPower’s MILPDU is their ability to efficiently and effectively modernise older generation vehicles. Replacing traditional relay and fuse boxes with solid-state technology not only reduces weight and size but also enhances reliability and survivability in highly demanding environments.

Main features of Piedrafita’s Power Distribution Units

  • 64 CAN outputs
  • 32 physical inputs with 4 programmable voltage thresholds
  • Ethernet capability
  • Support for 11/29 bit CAN 2.0A or 2.0B
  • Selectable speeds from 50kbps to 1Mbps
  • Outputs: Up to 32
  • Continuous Current per Output: Up to 23 A
  • Max continuous Current: Up to 420 A
  • Max Peak Current: 500 A

Low footprint

The compact size of the military power distribution unit ensures easy integration into any vehicle architecture. This feature reduces the overall space requirement, making it suitable for a variety of military vehicles, from armoured trucks to unmanned systems.

High reliability

Designed with solid-state technology, these units eliminate mechanical parts, significantly increasing system reliability. The robust construction ensures dependable performance even in the harshest environments.

99% thermal efficiency

This high efficiency reduces energy waste and enhances the overall operational performance of military vehicles.

Reverse polarity protection

The reverse polarity protection safeguards the unit and connected devices from damage caused by incorrect battery connection. It is crucial for maintaining the integrity of the power system in dynamic and fast-paced military operations.

Low EMC profile

The low electromagnetic compatibility (EMC) profile of the military power distribution unit minimises electromagnetic interference with other electronic systems in the vehicle. This compliance with strict military EMC standards ensures seamless operation alongside other critical systems.

Programmable switching logic

The fully programmable switching logic allows for customisation to meet specific mission requirements. This flexibility improves the efficiency of the electrical system by enabling precise control over power distribution.

Improved logistics

The ability to use a single military power distribution unit across various vehicle platforms simplifies inventory management and reduces logistical challenges. This standardisation facilitates maintenance and reduces downtime, enhancing overall operational readiness.

 

Integrated positive voltage surge absorber

  • For all loads connected for the PDU
  • For all equipment connected in parallel to the PDU

MILPDU range meet the following standards

  • Electrical characteristics: DefStan 61-5 Part 6
  • EMC: DefStan 59-411 Part 3 – LAND CLASS A
  • Environmental: DefStan 00-35
    • Vibration & Shock
    • Ambient

Examples of customized Power Distribution Units

Polarity
Single Pole
Dual Pole
Single Pole
Voltage
9-39V
9-39V
9-39V
Outputs
32
32
24
Continuous Current
per Output
23A
23A
20A
Continuous Current
Overall
400A
420A
150A
Case configuration
Standard
Standard
Lite

SUMMARY

  • The compact size and superior energy efficiency (>99%) of these military PDUs ensure optimal power utilisation and seamless integration into various vehicle architectures.
  • Solid state technology eliminates mechanical components, significantly enhancing the reliability and durability of PDUs in demanding environments.
  • Features such as reverse polarity protection and reduced EMC interference ensure the PDUs operate safely alongside other electronic systems in military vehicles.
  • Programmable switching logic offers mission-specific customisation, while the standardisation across platforms simplifies inventory management and reduces logistical challenges, enhancing overall operational readiness.

Explore other power solutions for military vehicles:

Positive voltage surge protection device within the range of military power solutions designed by Piedrafita

Surge Protector

Rugged power DC/DC converter within the range of military power solutions designed by Piedrafita

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