ISO 8816:1993/Amd 1:2012

Overview

ISO 8816:1993/Amd 1:2012 is an important international standard issued by the International Organization for Standardization (ISO) that addresses the general requirements for solid-state remote power controllers (SSRPCs) used in aircraft systems. This amendment, released in 2012, updates the original 1993 standard to reflect advancements and refinements in aerospace electrical requirements. SSRPCs are critical components for managing electrical power distribution in modern aircraft, ensuring reliability, safety, and efficient remote control functionalities.

The standard is developed under the ISO Technical Committee ISO/TC 20, Subcommittee SC 1, which focuses on aerospace electrical systems. It aligns with electrotechnical standardization protocols, collaborating closely with the International Electrotechnical Commission (IEC).

Key Topics

• General Requirements for SSRPCs
  The amendment clarifies and expands the specifications governing electrical performance, environmental tolerance, and testing protocols for solid-state remote power controllers in aviation applications.

• Testing Framework and Setup
  The document includes detailed schematic diagrams, such as the general test setup emphasizing the use of ammeters and sensors to accurately assess SSRPC functionality. Parameters such as sensing resistance (R(SENSE)) are critically defined to ensure precise current measurement and safety during short-circuit tests.

• Electrical Characteristics and Safety Compliance
  The update ensures SSRPCs meet stringent standards related to voltage bias, output grounding, and status feedback lines, guaranteeing operational integrity under various electrical stresses encountered in aircraft environments.

• Interoperability and Industry Collaboration
  ISO 8816:1993/Amd 1 promotes alignment with international aerospace electrical standards, facilitating harmonization across manufacturers and operators worldwide.

Applications

• Aircraft Electrical Power Distribution Systems
  Solid-state remote power controllers compliant with ISO 8816:1993/Amd 1 are used for managing power distribution, protecting circuits, and enabling remote electrical switching in commercial, military, and general aviation aircraft.

• Safety-Critical Aerospace Systems
  SSRPCs designed under this standard support vital aircraft systems requiring high reliability, such as navigation, communication, and flight control power supplies.

• Maintenance and Testing Procedures
  The standardized testing setup assists aerospace maintenance personnel and engineers in verifying SSRPC performance, thus reducing downtime and enhancing aircraft safety.

• Aerospace Equipment Manufacturing
  Manufacturers of avionics and aircraft electrical components implement these general requirements to ensure their products meet international benchmarks for durability and safety.

Related Standards

• ISO/IEC Directives, Part 2 - Guidelines for drafting International Standards, ensuring consistency and clarity in documentation development.

• IEC Standards on Electrotechnical Components - Complementary electrical component standards that often interface with SSRPCs in aerospace applications.

• Other ISO TC 20 Aerospace Electrical Standards - Covering broader aircraft electrical and electronic systems for integrated safety and functionality.

Benefits

• Enhances reliability and safety of aircraft electrical systems through standardized SSRPC design and testing.
• Facilitates international compliance and interoperability, reducing certification risks and costs.
• Supports innovative solid-state technology adoption, improving operational efficiency and aircraft performance.
• Provides a clear testing framework ensuring consistency in SSRPC evaluation across manufacturers and operators.

Keywords: ISO 8816 amendment, aircraft solid-state remote power controllers, aerospace electrical standards, SSRPC general requirements, aviation electrical power distribution, aircraft power control, SSRPC testing procedures, aerospace system safety, electrical component standards, ISO aircraft standards