NO: E-29021|61618|2023|Electrical(HQ)                                                                                                                                      Dhanbad, Date:27.09.2023

                                                                                                        DGMS APPROVAL NO.- 725 of 2017

From

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

To

Mr. DEBAJIT SEN, M/s-Marathon Electric Motors (India) Limited, 1, TARATALA ROAD,
West Bengal, KOLKATA, 700024

 Sub: Approval under Regulation 208(3) of the Coal Mines Regulations, 2017 for 3 phase Flameproof induction motor rated at 425 KW, 6.6 KV, 4 pole, Frame size- KF400 conforming to IS/IEC 60079-0:2017, IS/IEC 60079-1:2014 manufactured by M/s- Marathon Electric Motors(India) Ltd, Kolkata for use in below ground coal mines of India  – Renewal thereof.

Test Report Ref No.- IN/CIMFR/TR20/H164, Dated 19.10.2020

Sir,

Please refer to your online application No. E-29021/61618/2023/Electrical (HQ) dated 01.07.2023 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 ( Approval No. 725 of 2017) granted vide this Directorate's letter No. 60/689/EHQ dated 02.05.2017 for a further period of two years, i.e. up to 27.09.2025 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 this 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.