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ITU-T K.50 (02/2000)

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Safe limits of operating voltages and currents for telecommunication systems powered over the network
This Recommendation provides guidance on voltages and currents that may safely be used to power telecommunication systems that are part of the network. These systems use the paired-conductor cables of the network or specific power feeding cables to provide power to equipment at remote locations. This equipment and the current carrying conductors can be accessed in the energized state by service personnel without using insulated gloves or tools. These systems are not intended to be part of the subscriber's installation, and are not accessible to users of the network. They are located in the networks between different telecommunication centres and between a telecommunication centre and public network interfaces. This Recommendation covers only systems that use continuous dc powering.
Approval date: 2000-02-25
Provisional name:K.sov
Approval process:TAP
Status: Superseded
Maintenance responsibility: ITU-T Study Group 5
Further details: Patent statement(s)
[13 related work items in progress]
Ed. ITU-T Recommendation Status Summary Table of Contents Download
3 K.50 (12/2016) In force
2 K.50 (07/2016) Superseded
1 K.50 (02/2000) Superseded