What is the KW of 4 50 amp rectifiers at a 48 volt DC system
No.
The purpose of rectifiers is to change AC to DC.
Negative 48 volt DC voltage is simply a voltage that is negative 48 volts with respect to ground. This voltage is widely used in telecommunication systems.
A bridge rectifier, is a group of rectifiers (4 in a single phase) wired so that each half of an AC current is passed to respective positive and negative lines of a DC output. It provides full wave rectification of AC into DC.
the answer is dc volts are rectified from ac volts and the amperage will be the same unless you account for the slight drop from the rectifier. dc volts from a battery have no relationship to ac volts. you can derive ac volts from a dc source using an inverter.
Maplin offer affordable rectifiers. Rectifiers are used to convert alternating current to direct current. The process is also known as rectification. Rectifiers are often found serving as components of DC power supplies.
To convert voltage to DC .*(Direct Current)
Chemical Processes often have large power rectifiers as their primary source of DC Power. If these rectifiers are turned off, either for maintenance or a malfunction, there is a danger to the hardware of the chemical process. To solve this problem, standby rectifiers are installed in parallel with the main rectifiers. These rectifiers, known as Polarisation Rectifiers, pass electric current through the process and prevent damage....NEOWATT ENERGY
12 volts DC
The danger is in the voltage, not if it is ac or dc. For instance, 12v dc or 12v ac makes no difference in body contact. Neither will shock you. Usually 24 volts will not shock either. When you get to 48 volts or greater, then you have a chance of shock. 100 volts Ac or Dc shocks basically the same. 120 volts AC is actually 144 volts peak to peak, so 120 volts AC is slightly worse than 120 volts DC. Amperage is actually what kills. A "Taser" voltage can be as high as 50,000 V but the amps are so slow that it doesn't do permanent damage. Commonly people are shocked accidentally by a spark plug wire on a car or a lawnmower with no lasting or ill effects. This voltage can range from 15,000 volts to more than 50,000. These systems have very low amperage.
dc - the voltage is a constant 12 volts nominally in a normal car battery.
By using rectifiers,filters and regulators we can change a.c into pure d.c