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Vertical Power Primary Power System (PPS)

Vertical Power Primary Power System (PPS)




  • Transient protection on all connections
  • The PPS is compatible with systems using a backup alternator in parallel with the primary alternator. The PPS is not compatible with two-bus systems.

Circuit Ratings

  • Main Bus Output
    • 80 A maximum continuous
  • Starter Output
    • 300 A maximum continuous
    • 1200 A maximum intermittent
  • Alternator Input
    • 80 A maximum continuous
  • Analog Current Monitor Outputs
    • Common-mode reference of 7.5 VDC
    • Scale: 1 mV/Amp
    • Short circuit protected

Environmental / Physical

  • Component Temperature Range: −40°C to +85°C
  • Storage Temperature Range: −55°C to +100°C
  • Weight: 1.6 lb (0.72 kg)
  • Operating Voltage: 8 – 36 VDC
  • Low quiescent power: less than 1 mA at 14 VDC and 28 VDC
  • Maximum power
    • 320 mA at 14 VDC
    • 140 mA at 28 VDC


The Vertical Power Primary Power System (PPS) is an entirely new approach to the master, starter, and charging circuit on your experimental aircraft or LSA. It combines the functions of multiple high-current, electro-mechanical components into a single, solid-state device that installs in minutes with plug-and-play simplicity. Plus, the high-reliability of the PPS means you won’t find yourself stranded on a deserted landing strip without the power to start your plane.

The PPS is a power distribution component that handles your aircraft’s high-current power. It controls the flow of power from the battery to the starter and supplies power to the Vertical Power VP-X (or a traditional bus) for your electrical system loads. The PPS also supports the charging circuit by completing the B-lead connection to the alternator (a basic system diagram is provided below).

The Vertical Power System

PLEASE NOTE:   The PPS DOES NOT SUPPORT DUAL BATTERY INSTALLATIONS – such as that designed for a Viking Aircraft Engine.  The PPS will only work with single battery systems.

In basic terms, the PPS replaces the contactor relays and a load of other heavy and older electro-mechanical devices for a lighter and cleaner installation.


The Old Way


The New Way – PPS

Additional information

Weight 0.72 kg
Dimensions 23 × 12 × 10 cm

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