What is IEC 61869-11 Ed.2 2018?

IEC 61869-11 Ed.2 2018 is a technical standard that specifies requirements for instrument transformers used in electrical power systems. It provides guidelines for the design, construction, and testing of these transformers. This standard is part of the International Electrotechnical Commission (IEC) 61869 series of standards, which cover various aspects of instrument transformers and their applications.

Importance of IEC 61869-11 Ed.2 2018

IEC 61869-11 Ed.2 2018 plays a crucial role in ensuring the accuracy and reliability of measurement and protection in electrical power systems. Instrument transformers are essential components used to transform high currents or voltages into manageable levels that can be measured and monitored. Compliance with this standard ensures that these instrument transformers meet specific performance and safety requirements, providing accurate and consistent data for system monitoring, control, and protection.

Main Features and Requirements

This standard defines the main features and requirements for instrument transformers, including voltage transformers (VTs) and current transformers (CTs). These features include accuracy classes, physical dimensions, insulation requirements, thermal performance, electromagnetic compatibility (EMC), and electrical transient performance. The standard also covers the type tests, routine tests, and special tests that need to be conducted during the manufacturing process to ensure quality and compliance.

Benefits and Applications

Complying with IEC 61869-11 Ed.2 2018 offers several benefits in terms of increased safety, improved system performance, and enhanced interoperability. By adhering to the standard requirements, manufacturers can ensure the accuracy of their instrument transformers, leading to reliable measurements and effective protection. Power utilities, industries, and grid operators can benefit from standardized instrument transformers for applications such as energy metering, protection relays, revenue billing, power quality monitoring, and fault detection.

In conclusion, IEC 61869-11 Ed.2 2018 is a critical technical standard that sets requirements for instrument transformers used in electrical power systems. Compliance with this standard ensures accuracy, reliability, and safety in measurement and protection applications. It establishes guidelines for design, construction, and testing of these transformers, encompassing various features and performance requirements. Adhering to this standard has numerous benefits for power system stakeholders, leading to improved safety, performance, and compatibility in diverse applications.