ROSSLYN, Va.—The National Electrical Manufacturers Association (NEMA) published ANSI/NEMA WC 75-2015 Standard for Controlled Impedance in Internal Electrical Cable. This standard was developed to cover specific requirements for finished cables with controlled impedance twisted pairs. It enables a user to specify various numbers of pairs (1– 61) with a required impedance requirement, and tailor the materials to meet a specific end application. The cables are intended for wiring of electrical equipment.
ANSI/NEMA WC 75 was developed by the NEMA 7HW Aerospace Technical Committee, and is for the defense industry, aerospace industry, and other high performance applications.
ANSI/NEMA WC 75 -2015 is available in hard copy or electronic download for $68 on the NEMA website.
The National Electrical Manufacturers Association (NEMA) represents nearly 350 electrical equipment and medical imaging manufacturers at the forefront of electrical safety, reliability, and resilience, as well as efficiency and energy security. Our combined industries account for 360,000 American jobs in more than 7,000 facilities covering every state. Our industry produces $106 billion shipments of electrical equipment and medical imaging technologies per year with $36 billion exports.