Colombo, Sri Lanka, 3-4 October 2013 ITU-T L.1200 Direct current power feeding interface up to 400 V...
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Transcript of Colombo, Sri Lanka, 3-4 October 2013 ITU-T L.1200 Direct current power feeding interface up to 400 V...
Colombo, Sri Lanka, 3-4 October 2013
ITU-T L.1200Direct current power feeding interface
up to 400 V at the input to telecommunication and ICT equipment
Shuguang Qi,Associate Rapportuer of Q19/SG5,
ITU Workshop on “Greening the Future: Bridging the Standardization
Gap on Environmental Sustainability”
(Colombo, Sri Lanka, 3-4 October 2013)
Content
Colombo, Sri Lanka, 3-4 October 2013 2
HVDC Application
Other requirements
System Voltage ranges
Interface P
General Introduction
Content
Colombo, Sri Lanka, 3-4 October 2013 3
HVDC Application
Other requirements
System Voltage ranges
Interface P
General Introduction
General Introduction
Summary
Colombo, Sri Lanka, 3-4 October 2013 4
Define Interface
This Recommendation specifies the direct current (DC) interface between the powerfeeding system and ICT equipment connected to it.
Normal and abnormal voltage ranges, and immunity test levels for ICT equipment to maintain the stability of telecommunication and data communication services.
Contents
Content
Colombo, Sri Lanka, 3-4 October 2013 5
HVDC Application
Other requirements
System Voltage ranges
Interface P
General Introduction
Interface P in ITU-T L.1200
Interface P
Colombo, Sri Lanka, 3-4 October 2013 6
Content
Colombo, Sri Lanka, 3-4 October 2013 7
HVDC Application
Other requirements
System Voltage ranges
Interface P
General Introduction
Normal Output Voltage Ranges in ITU-T L.1200
System Normal Output voltage ranges
Colombo, Sri Lanka, 3-4 October 2013
Target solutions
– The minimum voltage is 260 V.– The maximum voltage is 400 V.
ICT equipment shall maintain a specified normal serviceis 192 V-288 V.
Transitional solutions
Content
Colombo, Sri Lanka, 3-4 October 2013 9
HVDC Application
Other requirements
System Voltage ranges
Interface P
General Introduction
Other requirements in ITU-T L.1200
Abnormal DC voltage rangeFor Target solution:–(0V < U < 260 V);–(400V < U < 410 V).
Abnormal conditions–Voltage variations;–Voltage dips;–Voltage interruptions;–Voltage surges/transients;–Inrush current.
Colombo, Sri Lanka, 3-4 October 2013 10
Other requirements in ITU-T L.1200
Abnormal conditions: Voltage variations
Colombo, Sri Lanka, 3-4 October 2013 11
UT to 260V,back to UT
Duration : 1 minRequirements:Normal performance
Duration : 1 minRequirements:Normal performance
Duration : 1sRequirements: Temporary loss of function, automatic recovery
UT to 400V,back to
UT
UT to 410V,back to
UT
UT to 420V,back to
UT
Duration : 10msRequirements: Temporary loss of function, automatic recovery
Other requirements in ITU-T L.1200
Abnormal conditions: Voltage dips
Colombo, Sri Lanka, 3-4 October 2013 12
UT to 260V,back to UT
Duration : 10ms
Requirements:Normal performance
Other requirements in ITU-T L.1200
Abnormal conditions: Voltage interruptions
Colombo, Sri Lanka, 3-4 October 2013 13
UT to 0V,back to UT
Low Impedance: Duration : 10 msRequirements:Normal performance
HighimpedanceDuration : 1sTemporary loss of function, automatic recovery
UT to 0V,back to UT
Other requirements in ITU-T L.1200
Abnormal conditions: Surges/transients
Colombo, Sri Lanka, 3-4 October 2013 14
500V
Line toLine 1.2/50 μs(8/20 μs)Requirements:Normal performance
Line toGround1.2/50 μs(8/20 μs)Requirements:Normal performance
Line toLine 1.2/50 μs(8/20 μs)Requirements: Temporary loss of function, automatic recovery
500V 2 kV 2 kV
Line toGround1.2/50 μs(8/20 μs)Requirements: Temporary loss of function, automatic recovery
Other requirements in ITU-T L.1200
Abnormal conditions: Inrush Current
Colombo, Sri Lanka, 3-4 October 2013 15
1
5
9
13
17
21
0,1 1 10 100 1000
Ip/I
UT
T50 Pulse Duration (ms)
0.5
Content
Colombo, Sri Lanka, 3-4 October 2013 16
HVDC Application
Other requirements
System Voltage ranges
Interface P
General Introduction
HVDC Application
Colombo, Sri Lanka, 3-4 October 2013 17
380V
1) NTT Lab2) France
Telecom3) China
Mobile
1) Korean Telecom2) NTT NEDO
1)China Telecom
300V 240V
Colombo, Sri Lanka, 3-4 October 2013 18