What is EN 60255-3-3: 2014 ?

EN 60255-1: 2003 is an essential international standard that outlines the requirements and parameters for testing and setting the performance of measuring relays and protection equipment used in electrical power systems. The standard is designed to ensure the proper functioning, reliability, and accuracy of these devices when subjected to different operating conditions and disturbances.

Key Requirements and Parameters

EN 60255-1: 2003 specifies several key parameters for testing, including:

* Response Time: The standard defines a response time of not more than 20 microseconds for the majority of relays.

* Allowable: The standard allows for a maximum working voltage of up to 1000V.

* : The standard specifies an acceptable voltage drop below the rated voltage of the relay, typically not more than 30% of the rated voltage.

* : The standard specifies the maximum current that can flow through the relay without overheating or sustaining damage.

* : The standard defines a response time of not more than 10 microseconds for the majority of relays.

* : The standard allows for a maximum working voltage of up to 800V.

* : The standard specifies the maximum current that can flow through the relay without overheating or sustaining damage.

* : The standard defines a response time of not more than 5 microseconds for the majority of relays.

Conformity

EN 60255-1: 2003 is an "IEC 60062-1" standard, which means that it is based on the "IEC 60062" standard. This international standard is widely recognized and adopted by many different countries and regions.

Conclusion

EN 60255-1: 2003 is an essential international standard that outlines the requirements and parameters for testing and setting the performance of measuring relays and protection equipment used in electrical power systems. By following this standard, manufacturers can design relays that meet certain performance criteria, making them reliable and effective in protecting power systems from various abnormalities such as overloads, short circuits, and voltage fluctuations.