The said company is from Bangalore (India) You may ask for a door step service if you are in India as they have good service backup. Usually Inverter companies gets thier PCB's assembled by a contract manufacturer and thus replace the boards in case of any problems. Thus getting a schematic for a particular brand in India is too difficult. Too the PCB will be usually controlled by a microcontroller where you'll need the code again which is not possible to get unless you buy the complete technology...Cheers
thk u gentleman
but i want 3kva ups circuit diagram, and 48v dc ,50amp battery charger circuit diagram ,these two device uses thyristor control and digital ic only not microcontroller.
thanks