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BS IEC PAS 61156-1-4 - SYMMETRICAL PAIR/QUAD CABLES FOR DIGITAL COMMUNICATIONS WITH TRANSMISSION CHARACTERISTICS UP TO 1000 MHZ - PART 1-4: ASSESSMENT OF THE CONDUCTOR HEATING IN BUNDLED DATA GRADE CABLES DUE TO THE DEPLOYMENT OF POWER TRANSMISSION OVER THE COMMON MODE CIRCUITS OF EITHER 2 OR 4 PAIRS BASED ON THE IEEE 802.3 POE/POEP PROTOCOL
Hardcopy , PDF
English
Foreword
1 Scope
2 Normative references
3 Terms, definitions, symbols, units and abbreviated
terms
4 Testing of bundled cables
5 The temperature as a function of the current load
in conductors of the bundled cables in hexagonal
densest packing structure
6 Assessing already deployed cable systems
7 The higher performing data grade cables
8 The heat dissipation on heated and bundled cables
9 The heat dissipation of heated conductor, pair or
cable
10 Thermodynamic considerations for a combined
experimental and mathematical solution of the
heating problem
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