NO: E-29021|61923|2024|Electrical(HQ) /                                                                                                                                                                                                                         Dhanbad, Date: 12/08/2024

                                                                                                                       DGMS Approval No. 266 Group-I of 1985 (Renewal approval)

From

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

To

DEBASHIS SAHA, ELECTRO MINE, 25, CHANDITALA BRANCH ROAD, KOLKATA: 700 053
West Bengal, KOLKATA, KOLKATA, 700053

Subject: DGMS Approval no.266 Group-1 of 1985 under Regulation 208(3) of the Coal Mine Regulations, 2017 for Flameproof air-cooled lighting transformer, Type- LTU-1 of capacity 5/7 KVA with Primary 660/550/380 V and secondary 110/125 V, Single Phase, 50 Hz AC manufactured by M/s Electro-Mine, Kolkata conforming to IS/IEC60079-0:2017 and IS/IEC 60079-1:2014 for use in belowground coal Mines in India- Renewal thereof.

Ref No-: Test report No- IN/CIMFR/TR24/R/2963 dated: 21/03/2024 and the associated CIMFR certified drawing no. M.C.D.G-1 (page 1 of 1) 

Sir,

Please refer to your online application No. E-29021/61923/2024/Electrical (HQ) dated 23/05/2024 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. 266 Group-I of 1985) granted vide this Directorate's letter No.401/84/767/EHQ, Dhanbad, dated: 24/06/1985 for a period of two years, i.e. up to 12/08/2026 for use in belowground Coal Mines in India.

In the interest of safety, the OEM guidelines shall be adhered to and spares, supplied by OEM shall only be used while maintaining the Apparatus. 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.