NO: E-29021|62445|2025|Electrical(HQ)                                                                                                                                                                                                                                                                                                                                                                                                                                             Dhanbad, Date: 10/09/2025

DGMS APPROVAL NO.-E_62445/7

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/Weather proof Induction Motor rated at 250 KW, 3.3 KV, 3 Phase, 50 Hz, 4 Pole in frame size KF355 conforming to IS/IEC 60079-0:2017 and IS/IEC60079-1:2014 manufactured by M/s. Marathon Electric Motors (India) Ltd, Kolkata for use in belowground coal mines – Renewal thereof.

 Ref: Test report no.IN/CIMFR/TR21/S/H 337 dated 14/01/2021and BIS licence no. CM/L- 5412755

Dear Sir,

Please refer to your online application no. E-29021/62445/2025/Electrical (HQ) dated 12/07/2025 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. 702 of 2015) granted vide this Directorate's letter No.60/1718/EHQ dated 04.09.2015 for a further period of five years, i.e. up to 10/09/2030 for use in belowground Coal Mines.

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