-48 VDC grounding issue
-48 VDC grounding issue
(OP)
I am currently doing bids on remote stations that have no AC systems they Are all 48 24 12 VDC Central office with batteries, solar and 48 VDC gensets.
My question is what type of earth ground is required I cannot find it in the NEC codes,engineering book or the power engineer who is 1800 miles away LOL
I design RF Wan LAN systems not power LOL but I need to be a power person (sounds like a breakfast commercial)i just got stuck with this bid big whine LOL where is that 10 amp dc breaker any way LOL
My question is what type of earth ground is required I cannot find it in the NEC codes,engineering book or the power engineer who is 1800 miles away LOL
I design RF Wan LAN systems not power LOL but I need to be a power person (sounds like a breakfast commercial)i just got stuck with this bid big whine LOL where is that 10 amp dc breaker any way LOL






RE: -48 VDC grounding issue
RE: -48 VDC grounding issue
You might find something interesting in ch. 11 at: [~3MB]
www.qwest.com/wholesale/downloads/2003/030225/PUB77350IssMApr03.pdf
Fuse overcurrent protection seems popular.
www.bussmann.com/shared/library/catalogs/Telpower_Cat.pdf
RE: -48 VDC grounding issue
RE: -48 VDC grounding issue
RE: -48 VDC grounding issue
RE: -48 VDC grounding issue
A resistive divider is used to reference the DC to half way between, with the centre of the divider grounded. The size of the resistor determines the sensitivity.
RE: -48 VDC grounding issue