This SAE Aerospace Recommended Practice (ARP) provides technical design and application information related to the generation, distribution, control, and utilization of aircraft 270 V DC electrical power systems and support equipment. This document also provides references and definitions to permit comparisons of various electrical systems and components.

Purpose:

The purpose of this document is to consolidate industry recommended practices for 270 V DC systems and equipment to enable a common understanding of their specification, design, and use.