SIST EN 2591-217:2004

Overview

SIST EN 2591-217:2004 is a European aerospace standard that defines precise test methods for measuring the voltage drop under a specified current in electrical connections-specifically terminal lugs and in-line splices. Developed by the European Association of Aerospace Manufacturers (AECMA) and published by CEN, this standard ensures reliable, consistent electrical performance in aerospace applications. It is designed to be used in conjunction with EN 2591-100, which covers general test methods for electrical and optical connection elements.

By specifying how to accurately measure voltage drop, SIST EN 2591-217:2004 helps manufacturers and engineers verify that terminal lugs and in-line splices meet stringent aerospace quality and safety requirements.

Key Topics

• Voltage Drop Measurement: The standard provides a defined procedure for measuring voltage drop across terminal lugs and in-line splices under a specified test current, ensuring components do not exceed allowable electrical losses.

• Specimen Preparation: It requires specimens to be fitted with their normal accessories and wired according to technical specifications. Test conditions such as cable type, installation, wiring, measurement point distance, and current are detailed.

• Calculation Method: The voltage drop in a connection (Uc) is calculated by subtracting the reference cable voltage drop (Ur) from the specimen voltage drop (Us), with specific formulas for terminal lugs and in-line splices.

• Test Assemblies: The standard includes descriptions and diagrams of measurement setups to ensure repeatability and comparability of results.

• Performance Limits: It mandates that the measured voltage drop must not exceed values specified in the applicable technical specification, assuring electrical connection integrity.

Applications

SIST EN 2591-217:2004 is essential for aerospace industry professionals involved in the design, manufacturing, and quality assurance of electrical connection components including:

• Aerospace Electrical Systems: Used to validate terminal lugs and splice connections on wiring harnesses, ensuring minimal voltage loss and reliable power distribution within aircraft.

• Component Certification: Manufacturers rely on this standard during testing and certification processes to demonstrate compliance with aerospace electrical performance criteria.

• Quality Control: Enables consistent quality checks during production and maintenance, helping to identify faulty connections that could lead to electrical failures.

• Research and Development: Engineers implement this method to optimize connection designs for improved conductivity and durability under operational current loads.

Related Standards

• EN 2591-100: General test methods for aerospace electrical and optical connections, essential to be used alongside EN 2591-217 for comprehensive testing.

• AECMA Prestandards: Earlier standards covering aerospace electrical components and test methods that support the implementation of EN 2591 series.

• International Aerospace Standards: Other standards governing aerospace electrical installations and connection reliability, used in coordination with EN 2591-217 to meet global aerospace industry demands.

Keywords: SIST EN 2591-217:2004, aerospace electrical standard, voltage drop test, terminal lugs, in-line splices, aerospace connection testing, electrical connection performance, aerospace wiring standards, CEN aerospace standard, crimp connection testing, electrical voltage drop measurement.