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2005 Moscow power blackouts
On 25 May 2005, Moscow's power supplies were the centre of a major incident, which resulted in the supply being outed for several hours in many of City of Moscow districts, as well as Moscow, Tula, Kaluga and Ryazan provinces. Some tens of thousands of people were trapped in stranded underground trains in the Moscow Metro and in elevators, railway signaling was put out of action and many commercial and governmental organisations were paralysed.〔(【引用サイトリンク】title=Xinhua - English )〕
== Occurrence ==
The accident, which some accounts state affected more than 2 million people, started in powerstation no. 510 Chagino, situated in the south-east of Moscow in the Kuzminki district. Here, the high voltage (500 kV) current, going into the capital along the main power lines, is lowered via transformers for city usage to 220 kV and 110 kV.
The Chagino substation, built in 1964, is equipped with six high-to-low transformers. Another six substations situated around the MKAD carry out the same functions, and form the Moscow energy ring, which supply Moscow and neighbouring provinces with electricity.
抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』
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