IEEE C62.55 2020

$33.04

IEEE Guide for Surge Protection of DC Power Feeds to Remote Radio Heads

Published By	Publication Date	Number of Pages
IEEE	2020	40

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Description

Revision Standard – Active. The waveform of currents likely to exist on dc feeds to equipment located at the tops of towers due to a lightning strike, and the consequences of that waveform for protector design, are described in this guide.

PDF Catalog

PDF Pages	PDF Title
1	IEEE Std C62.55™-2020 Front cover
2	Title page
4	Important Notices and Disclaimers Concerning IEEE Standards Documents
7	Participants
8	Introduction
9	Contents
10	1. Overview 1.1 Scope 1.2 Word usage 2. Normative references
11	3. Definitions, acronyms, and abbreviations 3.1 Definitions 3.2 Acronyms and abbreviations 4. The problem
12	5. Lightning characteristics 5.1 General 5.2 Downward leader and negative charge polarity 5.3 Downward leader but positive charge polarity
13	5.4 Negative or positive charge polarity but an upward leader 6. The meanings of “short” and “tall” 6.1 Method of determination
14	6.2 Correction for towers on mountain tops
15	7. The surge on a dc feed
20	8. Examples of how the model can be used
22	9. The issue of multiple strokes and continuing current
24	10. Guidance for selecting MOV SPDs 10.1 Repeated standard tests at elevated temperature 10.2 Single high-energy surge
26	10.3 Multi-surge tests in standards
27	11. Energy delivered to an MOV 11.1 Energy from strokes
28	11.2 Continuing current 12. Practical considerations 12.1 MOVs
32	12.2 Silicon-based voltage-clamping devices
33	13. Comments 13.1 The lightning flash 13.2 The protector itself 13.3 Survivability
35	Annex A (informative) Multi-surge burst parameters of silicon voltage-clamping devices A.1 Measurement
37	A.2 Calculation
38	Annex B (informative) Bibliography
40	Back cover