Dear sir,
>>Locomotive can also power Air conditioning, Pantry requirements and all other electrical requirements of the train. These loads are called "hotel Loads" and the power is Called Hotel Power.In india WAP-5 and WAP-7 are capable of delivering Hotel Loads to the Trailing coaches, This distribution of power from the OHE to all compartments is called "head on Generation"
>>As you must be aware, single phase 25000Volts AC OHE supply is converted to Three phase AC in the locomotives by employing solid state devices... There is a provision at the main transformer...
more... secondary to tap outputs for Hotel Loads in WAP-5, not aware of WAP-7 and also no idea why IR is not yet employing the same even though we have Locos equipped with the same..
>>Interestingly, Abroad, there are diesel Locomotives also which supply Hotel loads for air conditioning or heating, maybe by providing an additional prime mover and a n alternator..
wishing best-always,
Aditya