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Location of Higashi-Shimizu and Japan's two utility frequencies Schematic of Higashi-Shimizu Frequency Converter. Higashi-Shimizu Frequency Converter (東清水変電所, Higashi-Shimizu Hendensho) is the third facility in Japan for interconnecting the power grid of eastern Japan, which operates at 50 hertz, and that of western Japan, which operates at 60 hertz.
Map of Japan's electricity transmission network, showing differing systems between regions. Electricity transmission in Japan is unusual because the country is divided for historical reasons into two regions each running at a different mains frequency. [10] Eastern Japan has 50 Hz networks while western Japan has 60 Hz networks.
50 Hz Japan: A, B JIS C 8303 100 V 200 V 200 V 415 V 50 Hz 60 Hz East Japan 50 Hz (Tokyo, Kawasaki, Sapporo, Yokohama, and Sendai); West Japan 60 Hz (Okinawa, Osaka, Kyoto, Kobe, Nagoya, Hiroshima). 120 V in military facilities in Okinawa. [49] Majority of sockets accept only type A plugs. See Energy in Japan for more. Jersey: G 230 V 400 V
Electrification systems used by the Japan Railways Group, Japan's formerly state-owned operators, are 1,500 V DC and 20 kV AC for conventional lines and mini-Shinkansen, and 25 kV AC for Shinkansen. Electrification at 600 V DC and 750 V DC are also seen in private lines and non-rail based transit systems.
Japan has 50 Hz and 60 Hz networks. Continental North America, while operating at 60 Hz throughout, is divided into regions which are unsynchronized: East, West, Texas, Quebec, and Alaska. Brazil and Paraguay, which share the enormous Itaipu Dam hydroelectric plant, operate on 60 Hz and 50 Hz respectively. However, HVDC systems make it possible ...
Location of Shin-Shinano and Japan's two utility frequencies. Shin-Shinano Frequency Converter (新信濃変電所, Shin Shinano Hendensho) is the designation of a back-to-back high-voltage direct current (HVDC) facility in Japan which forms one of four frequency converter stations that link Japan's western and eastern power grids.
The waveform of 230 V and 50 Hz compared with 120 V and 60 Hz. The utility frequency, (power) line frequency (American English) or mains frequency (British English) is the nominal frequency of the oscillations of alternating current (AC) in a wide area synchronous grid transmitted from a power station to the end-user.
The standard voltage at power outlets is 100 V, but the grids operate at different frequencies: 50 Hz in Eastern Japan and 60 Hz in Western Japan. [99] The grids are connected together by three frequency converter stations ( Higashi-Shimizu , Shin Shinano and Sakuma ), but these can only handle 1 GW in total. [ 100 ]