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Voltage is dependent on a reference. If I have a 12 volt battery, and ground the - side, it is 12 volts to ground. If I instead ground the + side, it is -12 volts to ground.
-48 volt telecom equipment is simply referenced to ground "upside down" or backwards, giving it a negative sign.
What else can I help you with?
When was Pac-West Telecomm created?
Pac-West Telecomm was created in 1981.
How do you get -48v DC?
In a 48V DC system you ground the positive to 0V so the live wire will be -48V.
Telecomm companies based on Finland?
Nokia,
Will it works if negative 48V is interchange from positive 48V?
If it's a motor, it may just run backwards. If it uses any kind of solid-state electronics, you will very, very, very likely blow the equipment or the power supply. Reversing polarity of power supplies? Just don't do it.
What causes a Yamaha golf cart 48v charger show abnormal cycle?
A Yamaha golf cart 48V charger might show abnormal cycle if the battery is getting worn out. It is possible that the charger is not getting enough juice to complete the charge,
How many volts does a bts uses?
By BTS, do you mean Base Transceiver Station? Such equipment can be found in cell phone towers. Usually a BTS runs on 48V DC.
How does the golf cart battery power the 12V lights and horn What equipment accessories do I need to go through?
I'm looking to buy my club car upgraded to a lithium battery, 48v, which I'd like to modify myself and install my loud speakers, which are pretty zippy. Unfortunately how a 48v battery can be modified without damaging my speakers?
Why telecom equipment used 48v?
48 volts is a convenient safe voltage to use, and telephone systems use a positive earth connection to minimise electroytic damage ot cables.
Can you charge 48v batteries with a 36v output charger?
No.
Why telecom power supply has 48V dc power supply?
because the termination and relays in side the telecoms penal needs for DC supply to continues the protection equipment and relay and purpose of telecoms
Why -48 volts is used in electronics?
-48V is used in the telecommunication equipment. The source of the -48V is a bank backup batteries that are always kept charged in the event of power loss. The typical range of voltage is -36V to -60V in this application. Why negative voltage is used is probably tradition as the modern power supplies that use this voltage are isolated and run the same as long as the positive terminal is 48V above the negative terminal.
Why won't my condenser mic work on logic pro?
condenser mics need 48V phantom power, make sure that the 48v is on, then check to see if the R is on and the I is on on your channel and see if they are wired to the master output.
