What is the difference between IEC 60044 and 61869 ?

IEC 60044 and IEC 61869 are two commonly used standards for instrument transformers. While both standards aim to ensure the design, performance, and testing requirements for instrument transformers, there are significant differences between them. In this article, we will provide a technical comparison of the two standards and highlight some of the key differences between them.

Scope and Application

IEC 60044 is an international standard that outlines the general requirements for electrical equipment, including transformers. It covers the design, performance, and testing requirements for transformers, as well as other related electrical equipment. The standard is applicable to all types of transformers, including instrument transformers.

On the other hand, IEC 61869 is an international standard that specifies the requirements for electrical equipment, including transformers, with the exception of those covered by IEC 6004It is specifically designed to cover the design, performance, and testing requirements for instrument transformers.

Instrument Transformers

Both IEC 60044 and IEC 61869 are instrumental transformers standards. IEC 60044 is applicable to all types of transformers, including instrument transformers. It sets the general requirements for the design, performance, and testing of transformers.

On the other hand, IEC 61869 is specifically designed to cover the requirements for instrument transformers. It specifies the design, performance, and testing requirements for instrument transformers, including their accuracy, stability, and overload capabilities.

Design and Performance

The design and performance requirements for instrument transformers are defined in IEC 6186The standard specifies the maximum allowable voltage and current ratings for the transformer, as well as the minimum power handling capacity and the maximum error of the transformer's primary and secondary impedance.

In contrast, IEC 60044 does not have specific requirements for instrument transformers. Instead, it sets the general requirements for electrical equipment, including transformers.

Testing Requirements

Both IEC 60044 and IEC 61869 have requirements for testing transformers. IEC 60044 specifies the testing procedures for transformers, including the tests that must be performed to determine the transformer's compliance with the standard's requirements.

IEC 61869 also specifies the testing procedures for instrument transformers. However, it is worth noting that the standard does not cover the testing of the transformer's electrical connections or the testing of the transformer's mechanical components.

Conclusion

In conclusion, IEC 60044 and IEC 61869 are both instrumental transformer standards that outline the requirements for the design, performance, and testing of transformers. While both standards are applicable to instrument transformers, IEC 61869 is specifically designed to cover the requirements for instrument transformers. The choice between the two standards will depend on the specific requirements of the application.