Cover DIN EN 60255-121 VDE 0435-3121:2015-01

DIN EN 60255-121 VDE 0435-3121:2015-01

Measuring relays and protection equipment

Part 121: Functional requirements for distance protection

(IEC 60255-121:2014); German version EN 60255-121:2014
Class/Status: Standard, valid
Released: 2015-01
VDE Art. No.: 0400115

This part of IEC 60255 specifies minimum requirements for functional and performance evaluation of distance protection function typically used in, but not limited to, line applications for effectively earthed, three-phase power systems. This standard also defines how to document and publish performance tests.