Power and Voltage-Switching Unit (PVSU)

PVSU Features:

  • Combines and modernizes the three most common military ground-mobile power handling LRUs (PDU, PSU and VSU)
  • Utilizes state-of-the-art, self-protected, BIT capable, "Smart Power" switching hybrids and interface circuitry
  • Unites an intuitive operator interface with military HFE designed displays and controls
  • Provides full BIT/BITE, diagnostics and fault isolation
  • Easily integrated, full military environment qualified power handling solution for legacy platform upgrades and new platform designs

The power distribution portion current limits, filters and distributes the platform's prime power source to the platform's DC power grid.

  • Power system faults are displayed and communicated on the CAN Bus
  • Electronic "circuit-breakers" can be reset locally ore remotely via the CAN Bus

The power select portion allows the user to switch between various platform and external power sources

  • NATO (28V) Receptacle, Auxiliary Power Unit, Shore Power (AC), Inverter outputs, etc.

The voltage switching portion displays the State of Health (SoH) for the battery bank(s), the AC input/inverter outputs and provides optional Battery Bank switching for isolation, load switching, battle-override and emergency starting functions.

PVSU Specifications:

20 Electronic Circuit-Breakers (ECB)

  • Configurable 5A to 50A
  • "Reset" from Front Panel or via CAN Bus
  • Remote Breaker Assembly provides 20 additional PVSU controlled ECBs


  • Two, Battery State of Health (SoH)
  • Power Fault for ECB status/control
  • AC and DC Voltage
  • Two, Inverter Power Status
  • Display test and brightness functions

Comprehensive Diagnostics and BIT/BITE

  • PBIT, CBIT and IBIT (if required)
  • Status reported on serial Bus (CAN)


  • CAN Bus
  • RS232
  • GbE Wire/Fiber, standard option
  • Easily upgraded for other Buses