scope:

The present document contains safety requirements for the erection of information technology installations with remote power feeding at an operating a.c. voltage exceeding 50 V (rms value) or an operating d.c. voltage exceeding 120 V, conductor to conductor and/or conductor to earth. It applies in addition to EN 60950-1 [3] and EN 60950-21 [4] and contains terms, requirements and tests.

If special standards are applicable for installations and parts of installations these will take precedence; for example EN 60950-1 [3] and EN 60950-21 [4].