If you work with high-voltage measurement or protection, you know that accuracy and reliability start with the IEC 61869 series
One of the most valuable sections of the IEC 61869-1 PDF is the testing matrix. Tests are divided into three distinct categories: Iec 61869-1 Pdf
Defining voltages the equipment must withstand during surges (lightning strikes or switching operations). If you work with high-voltage measurement or protection,
The standard applies to newly manufactured instrument transformers intended for use in electrical power systems with frequencies from 15 Hz to 100 Hz. It covers equipment used for: Iec 61869-1 Pdf
The standard includes several annexes, both normative and informative:
Providing reliable signals to protective relays during power system faults.
— Defines key performance parameters such as:
