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Why do we use -48v in telecom equipment?

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تم إضافة السؤال من قبل Fahad tariq , transport engineer , ZTE (Zhongxing Telecom Pakistan)
تاريخ النشر: 2014/08/24
Suresh Gopalakrishnan
من قبل Suresh Gopalakrishnan , Principal Telecom Engineer , Mcdermott

-ve is "cathodic protection" , First developed to keep the copper hulls of British naval ships from corroding, this technology has been applied to protecting everything from oil rigs to gas pipelines to telephony cabinets. By keeping the cabinet frame at a more positive voltage than ground, corrosion is reduced and the life of the equipment is increased. as simple as this!

Gundappa Patil
من قبل Gundappa Patil , Team Lead , Envision Network Technologies PVT Ltd

used for Negative Polarity for BTS commission

Andi Zulkarnain Patongai
من قبل Andi Zulkarnain Patongai , Head of Engineering in Telecommunication, Instrumentation, Mechanical, Electrical , PT Multi Kontrol Nusantara

negative polarity is achieved by grounding the positive terminal of power supply system and the battery bank. This is done to prevent electrolysis depositions.

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