Overview
IEC TS 63236-2:2021 defines requirements for DC appliance couplers used to power information and communication technology (ICT) equipment in data centres and telecom central offices. This Technical Specification covers a 5.2 kW system: class I couplers with two active contacts plus an earthing contact, a rated power of 5.2 kW, and a rated DC voltage range 294 V to 400 V. It is intended specifically for DC ICT equipment as referenced in IEC 62368-1 and is to be used together with IEC TS 63236-1:2021.
Key Topics and Requirements
The standard supplements Part 1 and addresses practical and safety-related technical topics, including:
- Rated characteristics: rated power (5.2 kW), voltage range (294–400 V DC), and current limits (13 A at 400 V, 17.6 A at 294 V, up to 20 A for brief battery discharge conditions).
- Connector configuration: two live conductors plus protective earth for Class I equipment.
- Safety and protection: protection against electric shock, earthing provisions, basic and fault protection, and appropriate overcurrent protection.
- Mechanical and dimensional requirements: standardized dimensions, compatibility gauges, insertion/withdrawal forces and mechanical strength tests.
- Electrical performance tests: insulation resistance, electric strength, breaking capacity, normal operation, temperature rise and resistance to heating.
- Cabling and terminations: cord types, maximum cord diameters, terminal construction, cable anchorage, and cord connection tests for both rewirable and non-rewirable connectors.
- Durability and environment: resistance to heat, ageing, rusting, tracking, and EMC requirements relevant to data centre environments.
- Marking and documentation: required markings, ratings and conformity information to ensure safe installation and maintenance.
Applications and Who Uses This Standard
IEC TS 63236-2 is essential for:
- Connector and accessory manufacturers designing DC appliance couplers for data centres and telecom sites.
- ICT equipment OEMs specifying compatible DC power interfaces compliant with IEC 62368-1.
- Data centre and telecom facility engineers implementing DC power distribution systems (380 V nominal) and specifying connector safety and interoperability.
- Test labs and certification bodies performing conformity and type tests referenced in the specification.
- Safety and compliance teams ensuring equipment meets standardized mechanical, electrical, and EMC requirements.
Related Standards
- IEC TS 63236-1:2021 (general requirements and common specifications) - Part 2 is used in conjunction with Part 1.
- IEC 62368-1 - safety standard for ICT equipment powered by these DC couplers.
- Other parts of the IEC 63236 series covering additional system powers and configurations.
Keywords: IEC TS 63236-2:2021, DC appliance couplers, 5.2 kW DC system, data centre DC power, telecom central office connectors, IEC 62368-1, DC power distribution.