China Led Development of New International Standard for Electrical Relays

The International Electrotechnical Commission (IEC) has released a new international standard for the testing of electrical relay coils. The standard, titled "Electrical relays – Part 3: Coil characteristics," was developed under the leadership of China, with contributions from experts in Germany, Austria, Italy, Switzerland, and Japan.

This new standard provides advanced and unified testing methods for electrical relay products, aiming to facilitate international trade. Electrical relays are fundamental components in industrial control, power systems, appliances, automotive, and telecommunications sectors. The characteristics of the relay coil, including resistance, impedance, and inductance, are critical parameters that directly influence the relay's performance and reliability.

The publication of this standard clarifies and unifies the testing conditions and procedures for relay coil parameters. It addresses issues with existing, less detailed, and difficult-to-apply standards, offering a reproducible and comparable technical basis for manufacturers, users, and testing institutions worldwide.

The standard is expected to become a key reference for performance evaluation, contributing to industrial standardization, product quality, and international trade within the electrical relay market.