(2). Administration, maintenance, electric power transmission systems and types of power transformers, oil cooled and air (onaf: oil-natural and air-force cooling type) voltage, high voltage 69/27.5 kV. first phase,25 mega volt ampere (v-connection) for delivering electrical power to drive train system, which has the power of the Metropolitan Electricity Substation Rd.2 transformers and dry type transformer cooling with air (an:.air-natural cooling type) voltage of 27.5 kV / 230 volt, 50 amp, 2 kV transformer which is installed inside the station building supply electrical power to drive train system (tps).
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