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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.
How many watts does a 48 volt battery produce?
To calculate the wattage produced by a 48-volt battery, you need to know the current (in amperes) it can supply. Once you have the current value, you can use the formula P = V x I, where P is power in watts, V is voltage in volts (48V in this case), and I is current in amperes. So, without knowing the current, we cannot determine the wattage produced by a 48-volt battery.
What is the largest natural bra size in the world?
It is difficult to determine the largest natural bra size in the world as sizes can vary greatly. However, some individuals have been reported to have a natural bra size of up to 48V. It is important to note that bra sizes are not standardized and can differ across brands and countries.
What power is used to energize and trip shunt trip breaker?
A shunt trip breaker is energized using an external control power source, typically a low-voltage DC supply, which can range from 12V to 48V. When a specific condition is met, such as an alarm or a remote signal, this control power activates the shunt trip mechanism, causing the breaker to open and disconnect the circuit. This feature is often used for safety applications, allowing for remote or automated tripping of the circuit.
What is the volume if the mass is 48 and the density is 3?
Use this equation, density=mass/volume.density=0.3546kg/348mldensity=981.39A different answerdensity, ρ=mass/volume=m/Vm=(0.3546kg)(1000g/kg)=354.6g; V=348 mLρ=354.6g/348mL=1.02 g/mL
How do you get -48v DC?
In a 48V DC system you ground the positive to 0V so the live wire will be -48V.
How do you wire -48v dc power and ground to earth?
always think of any supply system so : RED = MOST POSITIVE BLACK = MOST NEGATIVE in a telecom system the -48V supply is refferenced to ground and earth, so the supply wire is NEGATIVE, this means a DC supply most positive signal the RED wire, go to EARTH = ZERO, the BLACK wire is the MOST negative, so in this case it is -48V
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 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 bts work on -48DC V?
IN BTS -48V IS USED REASON BEHIND IT IS THAT When interference is occur in voltages it affect only positive pulse not in negative terminal so if we make positive common then no interference occur And we get pure -48 volts without any interference. Another reason is that we can use +48 but the lightning has -ve charge due to attraction all the network may destroy so we use the -48 which repel the lightning that make the network safer from great destruction...
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.
Why you use 48V for sdh?
A 48V power source is used to power an SDH pump to allow for sufficient electricity to keep the motor moving at maximum efficiency. These pumps are used in a variety of agricultural and industrial applications.
Why the bts is given a power supply of -48v?
because in this voltage harmonics are not present
Is phantom power always 48v?
"Phantom Power" in use in the recording industry is ALWAYS 48V. Some types of mics use other types of power like T-power or an internal battery, but this is not "Phantom Power".
Why -48v DC is used in telecom?
In earlier days of telephone networks, 48V DC was once found to be suitably high to be able to make telephone work on long telephone lines and still low enough not to cause serious danger if somebody touches the telephone wires. Telephone central offices (exchanges) so started using 48V DC. Even when newer automatic exhanges were setup, they were designed to make use of existing 48V battery sets and arrays which were available with telecom service providers. This legacy design practice has been continued and over many decades all new telecom devices have been designed to work with 48V. The positive grounded or -48V system is also from telephone history. The negative voltage on the line was better than positive to prevent electro-chemical reactions from destroying the copper cable quickly, if cables get wet Ans- It is because of cathodic protection. It reduces the sulphation on the battery terminals.
Why plus 48V not use in telecoms?
To avoid the corrosion of the copper conductors under the ground.
