ITU-T Work Programme

[2013-2016] : [SG5] : [Q19/5]

[Declared patent(s)] - [Publication]

Work item:

L.dualpowerinput

Subject/title:

Impact on ICT equipment architecture of multiple AC or up to 400 VDC power

Status:

[Carried to next study period]

Approval process:

AAP

Type of work item:

Recommendation

Version:

New

Equivalent number:

Timing:

Liaison:

ETSI EE/EE2, IEC

Supporting members:

Huawei, Orange, China, Telecom Italia

Summary:

The document describes all the identified impacts at the power interface i.e.switch/combine circuit between inputs, plugs, converter, power sharing enabling individual battery bank test, ... inside ICT equipment from power interface to internal converters inputs. It will describes in details the following cases: no switch /combine upstream the converter. AC and AC input to ICT equipment with switch. DC and DC input to ICT equipment with combine circuit. DC and DC input to ICT equipment with switch Hybrid AC and DC input to ICT equipment with switch It includes description of impacts on the circuit between the input interface and converter inputs and possible specific solutions for : - power feeding protection lines - plugs and isolation, - power sharing control enabling separate battery test attached to redundant power feeds. - any other depending on impacts

Comment:

Editor: Andreas Stiedl (Huawei) Didier Marquet (Orange)

Reference(s):

[TD 1770 Rev.2 (GEN/5)

]