IEEE C62.55-2020 PDF
This guide covers the application of SPDs used to protect the dc power feeds of remote radio heads (RRHs) and power supplies of optical fiber cable systems feeding the antenna systems.
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.
