At the beam energy range that is available from the present and the upcoming accelerators in India, heavy ion collision leads to several reactions like fusion, fission, direct and deep inelastic reactions and fragmentation. These reactions lead to many interesting research problems, which are so far beyond the reach of nuclear scientists of our country. The debris produced in such nuclear reactions contain a wide spectra of nuclei from very heavy transuranium nuclei right down to protons, neutrons and gamma rays produced over a wide range of kinetic energy, excitation energy and angular momenta. In order to detect and characterize these products for a detailed look at the above phenomena, a large detector array MEGHNAD is under construction at SINP. The detector array with solid angle coverage of approx 66% of 4p consists of 30 nos. of heavy ion detector modules, each module containing one two-dimensional position sensitive multi wire proportional counter, one Bragg curve ionization chamber and CsI(Tl) charged particle detector. The detector modules, designed to form a soccerball-like structure, are housed inside a frame which, when covered by the detector modules, forms a vacuum enclosure.The five hexagonal detector modules in the forward cone are further segmented into six sub-modules to handle large counting rates. Specifications of the detector modules and their performance in in-beam tests are given below along with some photographs of their assembly.