scope:

This document harmonizes voltage, current, power, and safety standards/precautions for near-end line-powering equipment operating at less than or equal to 200 Vdc to ground and far-end line-powered telecommunications equipment with a power rating of 100VA (traditionally referred to as RFT-V technology). It also addresses the calculation of voltage drop and power loss on the intervening pairs, interoperability between near-end and far-end line-power equipment from differing vendors, electrical protection and service continuity during low-level transient events caused by ac induction and Ground Potential Rise (GPR). Line-powering voltages covered by this standard are Class A1, A2, and A3 as defined in GR-1089-CORE [Ref 21].

Under development is a new ATIS Technical Report Fault Managed Power Distribution Technologies Human Contact Fault Analysis - that establishes a methodology to determine fault managed power distribution system response to various simulated human contact scenarios for systems that can provide up to 200 Vdc to ground and 400Vdc line to line and are not power limited.