Bharat Heavy Electricals (BHEL) has secured a Rs 1,829 crore order for manufacturing and setting up three 500MW thermal power units in Haryana.BHEL would design, manufacture, supply, erect and commission three steam generators along with associated auxiliaries at Jhajjar in Haryana for the Aravali Super Thermal Power Project (STPP), a BHEL release said.The project is a joint venture between National Thermal Power Corporation, Harayana State Electricity Board and Indraprastha Power Generation Company.While BHEL's Tiruchirapalli unit will manufacture the steam generators, its Ranipet unit will make auxiliaries such as electrostatics, precipitators, fans and air pre-heaters. The Hyderabad unit will supply coal mills, the Bhopal unit motors and the Bangalore unit electronics and control systems.The synchronisation and coal-firing for the first unit would be achieved before the next 36 months, the release added.