TESTING OF DC MOTOR WHEN SUPPLY SWITCHED FROM MG SET TO DRIVE AND PLC SYSTEM

Dear Sir
We wish to know what type of tests to be conducted on working DC Motors 450 KW 1640 amps two 450 KW motor armtures are connected in series 1640 amps 2 x 300 volts, rpm 250/900 and 1500 KW 600 V VF 220 V RPM 200/500 RPM When supply DC changed from MG SET to Drive and PLC System supply for

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