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Work item:
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L.1206 (ex L.dualpowerinput)
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Subject/title:
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Impact on information and communication technology equipment architecture of multiple AC, -48 VDC or up to 400 VDC power inputs
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Status:
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Approved on 2017-07-29 [Issued from previous study period]
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Approval process:
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AAP
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Type of work item:
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Recommendation
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Version:
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New
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Equivalent number:
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ETSI TS 103 531 (Twin)
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Timing:
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-
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Liaison:
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ETSI EE/EE2, IEC
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Supporting members:
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-
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Summary:
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The document discusses multiple power interfaces to ICT equipment operated by standardized -48V direct current, alternating current source and direct current source up to 400 V in line with the interfaces, operational voltage and characteristics detailed within ITU-T Recommendation and ETSI relevant standards. It also includes some details on the power architecture within the ICT equipment between the ICT power interface and the ICT end load.
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
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Comment:
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(ex Q19/5 Study period 2013-2016)
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Reference(s):
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[COM05-C.0781rev1, C.0842]
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Historic references:
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[COM05-C.0781rev1, C.0842] |
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Contact(s):
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| ITU-T A.5 justification(s): |
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First registration in the WP:
2016-10-16 21:40:35
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Last update:
2018-03-05 14:01:53
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