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Reply To: why -48v

16th March 2008 at 17:10 #51570
zoy
Guest

In Telecommunication generally we have 3 standards power supply to the BTS
1. 220/230 V AC
2. -48 V DC
3. +24 V DC (for outdoor BTS)

for -48 V DC generally we use negative polarity due to reduce corrotion loss.