Comprehension of HV Fuse Protecting Motor Loop in IEC Standard and Recommendations;

Application of utility integration bus based on IEC standards in information integration of electric utilities;

All the design,installation and commissioning works for HV and LV power supply, thunder-proof earthing and protection earthing systems, design of control system,electric equipment installation checking,cable laying and connection checking,as well as relative equipment test run for UCC 10 000 tpd clinker cement production line were based on BS or IEC standards.

It’s an inevitable trend for a substation automation system (SAS) to conform to the IEC 61850 standard.

Based on the IEC standards,some concepts of electronic instrument transformers are discussed including their structures and the logical relationship with digital substations.

finally, this paper analysises and certifies the rationality and applicablity of the approximate calculation formula advocated by IEC standards from the point of view of parameter changes according to the current distribution.