IEC 63066:2026 pdf download,Low-voltage docking connectors for removable energy storage units.
IEC 63066:2026 specifies safety and performance requirements for low-voltage docking connectors used to connect removable (or swappable) energy storage units to other equipment, such as a power conversion unit, an energy-consuming unit, or another energy storage unit. It applies to DC docking connectors that may include protective earth contacts and/or optional auxiliary contacts for signaling and data transmission. The standard defines key electrical and mechanical characteristics and the applicable ratings, including rated current up to 2,000 A and rated operating voltage up to 1,500 V DC. It also describes how connectors should be tested to verify behavior under fault conditions, including short-circuit testing using an I²t-based methodology, and it aligns with relevant connector frameworks such as IEC 60309-1:2021. Overall, IEC 63066:2026 aims to enable interoperable, reliable docking interfaces while reducing risks during installation, operation, and fault scenarios.
