NO: E-29021|30450|2020|Electrical(HQ) Dhanbad, Date: 14/10/2020
Chief Inspector of Mines &
Director General of Mines Safety
Directorate General of Mines Safety,
Dhanbad - 826 016.
RATAN LAL SHARMA, AMPCONTROL UK LTD,
65 THIRD AVENUE, HEATHER HOUSE INDUSTRIAL ESTATE
PINCODE:KA128HN, Scotland, Pretwick, IRVINE, 0
Sub: Approval under Regulation 208 (3) of the Coal Mines Regulations, 2017 for flameproof transformer with 6.6 KV primary windings and 1.1 KV secondary winding rated at 1.5 MVA, 50 Hz, Delta/Star connected, Vector Group Dyn11, type AW2000/INT4, mounted with 6.6 KV vacuum circuit breaker unit type AW2000/ E10 (EExd) manufactured by M/s. Ampcontrol UK Ltd., conforming to IS/IEC 60079-1:2007 and IS/IEC 60079-0:2004 for use in belowground Coal Mines in India - Renewal thereof.
Please refer to your online application No. E-29021/30450/2020/Electrical (HQ) dated 24.04.2020 on the above subject and CIMFR Test Report Nos. CIMFR/TC/P/H 639 dated 27.12.2013, CIMFR/TC/P/H851 dated 31.03.2014 and CIMFR/TC/P/H82 dated 07.05.2014 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. 578 of 2009) granted vide this Directorate's letter No. 474/489/EHQ dated 26.02.2009 for a further period of five years, i.e. up to 26.02.2025 for use in belowground Coal Mines. The conditions mentioned in the original approval and subsequent renewal letters shall be strictly complied with.
Please note that application for renewal should be made at least three (03) months before the date of expiry of the approval.