NO: E-29021|62525|2025|Electrical(HQ)                                                                                                                                                                                                                                                                                                                                                                                                                                                   Dhanbad, Date:24/10/2025

DGMS APPROVAL NO.-E_62525/5

From

Director General of Mines Safety
Directorate General of Mines Safety,
P.O & Distt: Dhanbad - 826 016.

To

DEBAJIT SEN, Marathon Electric Motors (India) Limited, MARATHON ELECTRIC MOTORS (INDIA) LIMITED, 1, TARATALA ROAD,
West Bengal, KOLKATA, KOLKATA, 700024

Subject Approval under Regulation 208 (3) of the Coal Mines Regulations, 2017 for flameproof squirrel cage induction motor in frame size KF 132M rated at 7.5 KW (10 HP), up to 550 V manufactured by M/s. Marathon Electric Motors (India) Limited, Kolkata conforming to IS/IEC 60079-0:2017 and IS/IEC 60079-1:2014 for use in belowground Coal Mines_ Renewal thereof.

Ref: 1. Test report no. IN/CIMFR/TR25/R/1971 dated 21/01/2025 with drawing no. AA447,

          Rev.03 dated 03/07/2020)

      2. BIS licence no. CM/L- 5412755 with endorsement no. 31 dated 15/11/2024

Sir,

Please refer to your online application no. E-29021/62525/2025/Electrical (HQ) dated 03/09/2025 on the above subject and test reports and other documents submitted therewith in this regard.

I, in exercise of powers conferred upon Chief Inspector of Mines (also designated as Director General of Mines Safety) under Regulation 208(3) of the Coal Mines Regulations, 2017, hereby renew the approval DGMS Approval No. 273 Group-I of 1986 granted vide this Directorate's letter no: 60/82/67/EHQ dated 07.01.1986 for a further period of five years i.e. up to 10/10/2030 for use in belowground Coal Mines.

The conditions mentioned in the original approval and subsequent renewal letters, if any, shall be strictly complied with and the test reports of all the electrical items covered under approval, conforming to the latest testing standards, shall be submitted within three months, if not submitted before.

The application for renewal should be made at least three (03) months before the date of expiry of this approval.