<h1>Standard input output norms for copper wound transformers define permitted inputs and export compliance conditions.</h1> Standard input output norms set permissible inputs and consumption rates for copper wound, 3 phase, oil cooled transformers above 1600 KVA up to and including 4000 KVA, listing specified materials with per KVA norms and net to net or one unit allowances. An exclusion clause disallows entitlement to transformer oil inputs when transformers are exported without the MS tank and transformer oil. Applicants must ensure imported goods match those used or required in the export product, with the schedule determining allowable input proportions.