GB/T 21711.10-2025 Electromechanical elementary relays—Part 10:Additional functional aspects and safety requirements for high-capacity relays

Scope

The additional functions and safety requirements in this document apply to basic electromechanical relays (relays with or without timing limits) with high-capacity requirements, such as breaking or short-circuit capabilities, similar to low-voltage electrical equipment. These relays include a specific design (such as magnetic blow arcs) to extinguish arcs generated between contacts, or use insulation configurations not covered by GB/T 21711.1—2023 (such as gas-filled contact cavities), or safety assessment requirements not covered by GB/T 21711.1—2023 (such as higher loads).
This document defines additional requirements for high-capacity relays with general performance, which can be used in smart grids, electric vehicles, and other applications, such as switching for battery charging/discharging, including:
a) energy storage systems;
b) photovoltaic energy systems;
c) electric road vehicles and electric engineering vehicles;
d) power electronics systems and equipment;
e) batteries and battery packs;
f) road vehicles.
The requirements of this document are verified through specified type tests.

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