Cover DIN EN IEC 60255-187-1 VDE 0435-3187-1:2022-09

DIN EN IEC 60255-187-1 VDE 0435-3187-1:2022-09

Measuring relays and protection equipment

Part 187-1: Functional requirements for differential protection – Restrained and unrestrained differential protection of motors, generators and transformers

(IEC 60255-187-1:2021); German version EN IEC 60255-187-1:2021
Class/Status: Standard, valid
Released: 2022-09
VDE Art. No.: 0400536

The object of this standard is to specify the minimum requirements for functional and performance evaluation of (longitudinal) differential protection designed for the detection of faults in ac motors, generators and transformers. This standard also defines how to document and publish performance test results.