Electric rotary converters

Electric rotary converters for power generation systems

CPCB CLEARANCE

HSN 8502 40 00 (Electric rotary converters) is subject to Central Pollution Control Board (CPCB) type approval, certificate of conformity of production, conformance labelling, and emission/noise norms under Serial Nos. 88, 94, 95, 95A, 95B and 95C of Schedule I of the Environment Protection Rules, 1986. Import of second-hand diesel generating sets is Restricted under Para 2.31 of the Foreign Trade Policy, with the Central Board of Indirect Taxes and Customs (CBIC) overlay applying at the bill-of-entry stage.

What this is

HSN code

8502 40 00

Chapter

85 · Electrical machinery and equipment and parts thereof

Primary regulator

CPCB · Environment Protection Rules, 1986 (Schedule I, Sr. Nos. 88, 94, 95, 95A–95C)

Customs documentation

Type approval certificate from CPCB
Certificate of conformity of production from CPCB
Conformance label from CPCB

Applicable Partner Government Agencies

CPCBCPCB·Central Pollution Control Board

Procedural directions for customs clearance are issued by: Central Board of Indirect Taxes and Customs.

Compliance steps

1
Obtain CPCB type approval and a certificate of conformity of production for the rotary converter or diesel generating set, and affix the required conformance label certifying compliance with emission and noise norms. All three are mandatory before filing the bill of entry; upload each document in e-Sanchit as required under GSR 804(E) dated 03-11-2022.
Schedule I Sr. Nos. 88, 94, 95, 95A, 95B and 95C of the Environment Protection Rules, 1986 · GSR 804(E) dated 03-11-2022 · CBIC letter F.No. 401/67/2022-Cus III dated 26-05-2023
2
If the import is of second-hand capital goods — including second-hand diesel generating sets — confirm ITC (HS) policy compliance under Para 2.31 of the Foreign Trade Policy and General Note 2 to the Import Policy before shipment. Second-hand DG sets are Restricted imports and cannot be cleared without prior authorisation.
Para 2.31 of the Foreign Trade Policy · General Note 2 to the ITC (HS) Import Policy

A word of counsel

The most frequent error on this tariff line is shipping a new rotary converter with engine-level emission documentation but without the product-specific CPCB type approval and certificate of conformity of production. CPCB's conformance regime requires both documents at the finished-product level — an engine test report from the original equipment manufacturer does not substitute. Consignments arriving without the conformance label affixed are liable to detention pending CPCB-directed remediation, which cannot be completed at the Indian port.

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Frequently asked

Does HSN 8502 40 00 require BIS certification?

No, no BIS Quality Control Order covers electric rotary converters under this tariff line. Import is governed by the Central Pollution Control Board under Schedule I of the Environment Protection Rules, 1986, requiring type approval, certificate of conformity of production, and conformance labelling for emission and noise compliance.

Which emission and noise norms apply, and where are they specified?

The applicable norms are set out at Serial Nos. 88, 94, 95, 95A, 95B and 95C of Schedule I of the Environment Protection Rules, 1986 as amended; the operative notification reference is GSR 804(E) dated 03-11-2022 read with CPCB letter No. CP-29/10/2022-UPC-I-HO-CPCB-HO-927 dated 26-05-2023.

Are second-hand electric rotary converters or diesel generating sets freely importable?

No. Second-hand diesel generating sets are classified as Restricted capital goods under Para 2.31 of the Foreign Trade Policy; import requires prior authorisation, and General Note 2 to the Import Policy sets out the applicable conditions.

Last verified against gazette notifications: 2026-05-16. Source: CPCB / CBIC / Indian Customs CUSDATA.