the ampere is the s i unit of current.
what is the s i unit of current?
the ampere
block i, in service since 1976, carries a nominal electrical power of 840 megawatts. the 50 hz three phase ac power is 567 megawatts and for the 16.7 hz traction current power 174 mw. the traction current generator is the world's largest single-phase ac generators. the generator block 1 is rated 21,000 volts at a current of 27,000 amperes, and the traction current generator is rated 14,500 volts and a current of 12,000 amperes. the current produced by the generators is stepped up to 220 kilovolts (three-phase alternating current) or 110 kilovolts (single-phase traction current) with the unit transformers. block i was the only nuclear power station which produces traction current. block i was shut down on march 17, 2011 for a three-month moratorium on nuclear power, an announcement on may 30, 2011 named block i as a unit that would not be returning to service.
neckarwestheim nuclear power plant
two different methods of establishing a system of electrical units can be chosen. various artifacts, such as a length of wire or a standard electrochemical cell, could be specified as producing defined quantities for resistance, voltage, and so on. alternatively, the electrical units can be related to the mechanical units by defining, for example, a unit of current that gives a specified force between two wires, or a unit of charge that gives a unit of force between two unit charges. this latter method ensures coherence with the units of energy. defining a unit for resistance that is coherent with units of energy and time in effect also requires defining units for potential and current. it is desirable that one unit of electrical potential will force one unit of electric current through one unit of electrical resistance, doing one unit of work in one unit of time, otherwise all electrical calculations will require conversion factors.
ohm