Branch «FSK OF ECC» – MES of Ural – improved the chart of power supply of the Magnitogorskogo metallurgical combine (MMK). Reliability of one power supply of the largest metallurgical enterprises of Russia is substantially enhanceable in the total. In order that to provide the trouble-free power supply of combine, one of chains of dvukhcepnoy line of electricity transmission, connecting substation 220 kv «Magnitogorskaya» (MES of Ural) with substation of 90 (MMK) perezaveli on substation 77 (MMK). Now a combine feeds from
substations 500 kv «Magnitogorskaya» on two lines of electricity transmission 220 kv: Magnitogorskaya – 77 and Magnitogorskaya – 90. In that case if one line becomes disconnected, the power supply of combine proceeds on the second.
