IEC 60947 Part 2:2016 is a set of international standards that provides guidelines for low voltage switchgear and control gear devices. These standards are used to ensure the safety, reliability, and performance of such devices in various electrical installations. In this article, we will delve into the technical details of IEC 60947 Part 2:2016 and explore its key requirements.
Scope and Objectives
The scope of IEC 60947 Part 2:2016 covers a wide range of low voltage switchgear and control gear devices, including circuit-breakers, switches, contactors, and motor-starters. The objectives of this standard are to establish common requirements for these devices and to promote their interoperability in different electrical systems.
One of the main goals of IEC 60947 Part 2:2016 is to ensure the safety of personnel and equipment. It sets specific requirements for temperature rise, short-circuit strength, and other performance characteristics to guarantee safe operation under normal and fault conditions.
Key Requirements
IEC 60947 Part 2:2016 outlines several key requirements for low voltage switchgear and control gear devices. These include:
1. Breaking Capacity: This requirement specifies the ability of a device to interrupt the flow of electrical current during fault conditions. It ensures that the device can safely handle high fault currents, preventing damage to equipment and minimizing the risk of fire or electric shock.
2. Electrical and Mechanical Endurance: This requirement sets the criteria for the durability and reliability of the devices. It includes testing procedures to assess their lifespan and operational performance, considering factors like switching frequency, load current, and environmental conditions.
3. Degree of Protection: IEC 60947 Part 2:2016 defines different degrees of protection against dust, moisture, and other external influences. These degrees of protection are represented by standardized IP codes, providing users with information about the suitability of the devices for different environments.
4. Clearances and Creepage Distances: This requirement ensures that there is enough distance between conductive parts to prevent electrical breakdown and short circuits. It considers factors such as voltage levels, pollution degree, and insulation materials to establish safe clearances and creepage distances.
In conclusion, IEC 60947 Part 2:2016 plays a crucial role in ensuring the safety, reliability, and performance of low voltage switchgear and control gear devices. By adhering to its key requirements, manufacturers can provide high-quality products that comply with international standards, thereby creating safer electrical installations for various applications.
Nina She