<h1>Input-output norms govern permissible imported inputs for manufacture of large oil-cooled copper-wound transformers, with component restrictions.</h1> Standard input-output norms prescribe allowable imported inputs for manufacture of copper-wound, three-phase, oil-cooled transformers above 100000 KVA, listing specified components and normative input quantities per KVA (CRGO laminations; copper winding materials; transformer oil or transformer oil base stock; press boards; phenolic resin bonded paper; tap changers/switches; moulded components), with net-to-net quantification for certain items. If exported without the M.S. tank and transformer oil, the allowance for transformer oil/base stock is disallowed. Applicants must ensure imported goods are those used or required in the export product and proportions of inputs will be determined by authorities.