Low-voltage docking connectors for removable energy storage units

IEC 63066:2026 applies to docking connectors (hereinafter referred to as accessories) incorporated in or fixed to electrical equipment, intended to connect energy storage units, either removable or swappable, or both, to a dedicated electric power conversion unit, to an energy consuming unit or to another energy storage unit.

These accessories are intended for DC and can include either a protective earth contact or optional auxiliary contacts for signalling and data transmission, or both. These accessories have a rated current of up to 2 000 A and rated operating voltages not exceeding 1 500 V DC.

This first edition cancels and replaces the first edition of IEC TS 63066 published in 2017. This edition constitutes a technical revision.

This edition includes the following significant technical changes with respect to the previous edition:

a) introduction of standard sheets;

b) alignment with IEC 60309？1:2021;

c) technical improvements, e.g. short circuit tests according the I2t- methodology.