What is BS IEC 62873-3-3‒ Residual-current devices about?
BS IEC 62873-3-3 is the third part of an international multi-series standard that outlines the requirements for residual current devices.
BS IEC 62873-3-3 provides the specific requirements for the RCDs with screw-type terminals for external untreated aluminium conductors and with aluminium screw-type terminals for use with copper or with aluminium conductors.
BS IEC 62873-3-3 applies to RCDs equipped with screw-type terminals of copper or of alloys containing at least 58 % of copper (if worked cold) or at least 50 % of copper (if worked otherwise), or of other metal or suitably coated metal, no less resistant to corrosion than copper and having mechanical properties no less suitable.
BS IEC 62873-3-3 specifies requirements like terms, definitions, classification, characteristics of RCDs, marking and other product information, standard conditions for operation in service and for installation, requirements for construction and operation, tests, etc.
Who is BS IEC 62873-3-3‒ Residual-current devices for?
BS IEC 62873-3-3 on residual current devices is useful for:
- Manufacturers and suppliers of RCBOs
- Dealers and distributors of RCBOs
- Designers of RCBOs
- Test/ service providers for RCBOs
Why should you use BS IEC 62873-3-3‒ Residual-current devices?
A residual-current device (RCD) is protective equipment that maintains the safety of an electrical device and system by tripping an electrical circuit with leakage current to the ground. It is very helpful to reduce the risk of serious damage that can cause by the heavy current.
BS IEC 62873-3-3 set out specific requirements for the construction, marking, and operation of residual current devices (RCDs) for your reference, to design and manufacture the RCD in compliance with a global standard. It gives you information about standard conditions that should be maintained at the time of installation or servicing of the RCD is carried out.
BS IEC 62873-3-3 provides you with certain guidelines for the test method that can be followed by the users to evaluate the performance of residual current devices, which helps you verify the stability of the screw-type terminal under accelerated cycling conditions. This aids in meeting specific qualities that can be applied to all types of residual current operated circuit-breakers, ensuring the high quality, efficiency, and reliability of residual current devices.
