Transformer coil windings treated as parts, not insulated wire; limitation failed where classification was fully disclosed.

Aluminium and copper transformer coil windings made through a distinct manufacturing process, with defined dimensions, turns, voltage capacity, separate commercial identity and marketability, were classifiable as transformer parts under Heading 8504 rather than insulated wire under Heading 8544. Consistent disclosure of the goods in approved classification lists and returns, together with departmental awareness of the activity, meant there was no suppression or wilful misstatement; the extended period of limitation was therefore unavailable and the demand, penalty and interest were held time-barred. The assessee's classification was upheld and the entire demand was set aside.

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Issues: (i) whether aluminium/copper transformer coil windings were classifiable as transformer parts under Heading 8504 or as insulated wire under Heading 8544; and (ii) whether the demand, penalty and interest were barred by limitation for want of suppression or misdeclaration.

Issue (i): whether aluminium/copper transformer coil windings were classifiable as transformer parts under Heading 8504 or as insulated wire under Heading 8544.

Analysis: The coil windings were manufactured by a distinct process involving winding of wires with insulation materials, resulting in a product having defined dimensions, turns, voltage capacity and separate commercial identity. The coils were marketable, separately sold and used either in new transformers or for replacement in sick transformers. They were not merely electric conductors or wires in the form in which the inputs were received.

Conclusion: The coils were correctly classifiable as transformer parts under Heading 8504, and not as insulated wire under Heading 8544.

Issue (ii): whether the demand, penalty and interest were barred by limitation for want of suppression or misdeclaration.

Analysis: The assessee had consistently declared the goods under Heading 8504 in approved classification lists, filed the prescribed returns and made full disclosures to the department over a long period. The department was aware of the manufacturing activity and the subject goods, and there was no positive act of suppression or wilful misstatement warranting invocation of the extended period.

Conclusion: The extended period of limitation was not invocable, and the demand, penalty and interest were time-barred.

Final Conclusion: The classification adopted by the assessee was upheld and the entire demand with consequential penalty and interest was set aside.

Ratio Decidendi: A product having a distinct manufacturing process, commercial identity and marketability is classifiable according to its own character, and the extended period of limitation cannot be invoked where the classification and activity were consistently disclosed and accepted by the department.

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