ITU-T K.151 PDF

This Recommendation addresses electrical safety, earthing and bonding, and lightning protection requirements for medium voltage power electronic converter systems, which haves medium voltage input with rated system voltages from 1 000 V AC up to 36 kV AC and low voltage output with rated voltages up to ±400 V DC, used in information and communication technology (ICT) data centres, telecommunication centres, or other application environments.

This Recommendation does not include the requirements of traditional −48 V DC or lower output voltage systems.