Classification of automatic voltage stabilizers under exemption notification turns on functional attributes, not the excluded category of programmable process controllers.

Automatic voltage stabilizers were considered under Sl. No. 255 of Notification No. 5/98, which covered goods of CSH 9032.80 except programmable process controllers. Applying the notification's own explanation and relying on technical literature and opinions from the Bureau of Indian Standards and the Directorate of Telecommunication, the Tribunal found that voltage stabilizers only regulated incoming voltage to a desired output range and did not operate as programmable process controllers. They were therefore entitled to the concessional rate of duty, and the Revenue appeal failed.

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Issues: Whether automatic voltage stabilizers were eligible for the concessional rate of duty under Sl. No. 255 of Notification No. 5/98 dated 2-6-98, or were excluded as programmable process controllers.

Analysis: The concessional entry applied to all goods of CSH 9032.80 other than programmable process controllers. The expression was explained in the notification as an automatic regulator of electrical quantities, or an instrument or apparatus for automatically controlling non-electrical quantities, the operation of which depended on an electrical phenomenon varying according to the factor to be controlled. On the material before it, including technical literature and opinions from the Bureau of Indian Standards and the Directorate of Telecommunication, the Tribunal found that automatic voltage stabilizers only corrected incoming voltage to a desired output range and did not function as programmable process controllers.

Conclusion: Automatic voltage stabilizers were not programmable process controllers and were entitled to the exemption under Sl. No. 255 of Notification No. 5/98 dated 2-6-98; the Revenue appeal failed.

Ratio Decidendi: Where an exemption notification specifically excludes a defined product category, goods must be classified by their functional attributes under the notification's own explanation, and technical material may be relied upon to determine whether they fall within the excluded category.

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