NO: E-29021|40935|2021|Electrical(HQ)                                                                                        Dhanbad, Date: 29/07/2021

                                                                               DGMS APPROVAL NO.783 of 2021

1. Every unit shall carry conspicuously in a permanent manner the aforesaid identification mark, i.e. ‘DGMS Approval No. 783 of 2021.

2. In addition, every unit shall also carry permanently this Directorate’s approval mark, as below:

 

3. (a)The design of the electrical circuit shall not be changed without obtaining prior approval from this Directorate.

4. (b)Conspicuous warning inscriptions against opening the cover of the main enclosure or of any apparatus which gives access to the flameproof enclosures on live parts or which is designed to receive cable attachment unless the supply to the unit is isolated at source, shall be affixed permanently on the respective part to ensure that all live parts within the unit are made dead and safe.

5. Spare parts shall be made readily available to the user as and when required for proper maintenance of the equipment.

1. The customer shall be supplied the copy of this approval letter, the test report from the testing laboratory with the lab certified drawing , an extract of the condition & special conditions, maintenance schedule, if any, recommended by the testing laboratory in their test report(s) so as to maintain safety features of apparatus/equipment.

2. The customer shall also be provided a copy of factory test report along with drawings, instruction manual on the installation, operation and maintenance of the equipment and spares parts catalogue at the time of delivery of the equipment.

6. The user shall furnish the performance report of the equipment directly to this Directorate after one (01) year of actual use.

7. While seeking renewal of Approval, valid BIS license in the case of Indian manufacturers and in case of foreign manufacturers, QAR/QAN, as may be applicable shall be submitted and the same shall remain valid as long as the apparatus is manufactured and marketed.

8. Any modification to the equipment that might be considered necessary at a later date shall be effected upon being so directed by this Directorate.

9. The high pressure hydraulic hoses supplied with the machine shall conformed to the standards and parameters as prescribed in the DGMS/Mech/Tech.Cir (Approval) No. 04, Dhanabd, dated 13.02.2015.

10. The Fire Resistant Hydraulic Fluid supplied with the machine shall conform to the standards and parameters as prescribed in DGMS/Mech/Tech.Cir (Approval) No. 02, Dhanbad, dated 13.02.2015.

11. The cables connecting with Equipment shall conform to the provisions of the DGMS Tech. Circular (Electrical) No. 12 dated 25.05.2015 and corrigendum vide DGMS Tech. Circular (Electrical) Approval No. 01 dated 19.02.2016 in addition to the special requirement, if any, specifically for safe operation of the equipment.

12. All covers, doors/access covers of the electrical equipment mounted on the equipment, on opening/removal which may expose live internal conductors, shall have warning instructions either by raised lettering or by other suitable means against such opening/removal of covers, doors and access covers, without isolating supply of energy to the equipment from its source.

13. The plug and socket assembly affixed to the motors/panel, if provided, will be so interlocked as to prevent removal of plug from the socket while alive.

14. Spare parts shall be made readily available, as and when required for proper maintenance of the equipment. Any failure in the equipment shall be intimated to this Directorate.

15. All sensing devices shall be regularly tested and, routinely calibrated or verified to ensure correct operation and a record of the same shall be maintained.

16. The associated items for which approval has been issued is exclusively for use as part of this equipment only and shall not be read as individual approval for those items.

17. The electrical equipment and cables associated with the machine shall be checked by the Electrical Supervisor of the mine for their respective flameproofness of the equipment and condition of cables in the beginning of each working shift and the findings thereof enter into a bound-paged book maintained for that purpose which shall be duly signed by the Electrical Supervisor with the date.

18. If there occurs any revision of standards applicable to the product/equipment, the manufacturer shall get the product/equipment tested as per revised standards and submit test reports to the  customer  for information and to this  Directorate for further approval/renewal.

19. The cable entry devices, threaded adaptors and stopping plugs shall be suitable for the equipment and be considered as a part of equipment (not a component).  The cable entry device and cabling methods used shall be suitable for their intended duty and for the special type of cable used in mining.  Such cable entry devices shall be duly certified as per relevant IS/IEC standards.

20. The approval of the subject equipment is with regard to Ex standards mentioned herein.  Other relevant standards applicable for assessment of its electrical parameters required under type test have not been taken into consideration.

21. All circulars/general approvals issued by DGMS from time to time, relevant to the equipment shall also be complied with.

22. The relevant provisions of the Central Electricity Authority (Measures relating to Safety and Electric Supply) Regulations, 2010 shall be complied with in all matter relating to the installation, operation and maintenance of the equipment.

23. The approval is accorded for a period of five (05) years, i.e. up to 29.07.2026

24. At the time of applying for renewal, details of supply with name of mines, purchase order and date shall be furnished with the application.

25. If at any time any of the conditions subject to which this approval has been granted, is violated or not complied with, this approval shall be deemed to have been revoked with immediate effect.

26. The above approval may be amended or withdrawn at any time, if considered so necessary in the interest of safety and is being issued without prejudice to any other provisions of law which may be or may become applicable at any time.

S l. NO.	Description	Manufacturer	Testing laboratory	Test report no. & date/ DGMS Approval No.		Standard to which the test is conducted
1	FLAME PROOF 3 PH CUTTER MOTOR – TYPE YBUS3-160; 1140 V, 160 KW, 3 PHASE, 4 POLE, 1471 RPM	FUSHUN COAL MINE MOTOR MANUFACTURING CO. LTD	CIMFR	CIMFR/TC/P/ H395	28-01-2016	IS/IEC 60079-0:2004, IS/IEC 60079-1:2007 IS/IEC 60529:2001
2	FLAME PROOF 3 PH ASYNCHRONUS OIL PUMP MOTOR – TYPE YBUS5-110(C); 1140 V, 110 KW, 3 PHASE, 4 POLE, 1482 RPM	FUSHUN COAL MINE MOTOR MANUFACTURING CO. LTD	CIMFR	CIMFR/TC/P/ H421	09-02-2016	IS/IEC 60079-0:2004, IS/IEC 60079-1:2007 IS/IEC 60529:2001
3	FLAME PROOF MONITOR BOX – TYPE XB24 ; 0.5A, 12W, 24 V DC	CHINA TRANSMISSION HEAVY EQUIPMENT CO.,LTD	CIMFR	CIMFR/TC/P/ H390	22-01-2016	IS/IEC 60079-0:2004, IS/IEC 60079-1:2007 IS/IEC 60529:2001
4	FLAME PROOF ELECTRICAL CONTROL BOX – TYPE KXJ-300/1140E; 1140 V,  197 A, 50Hz	CHINA TRANSMISSION HEAVY EQUIPMENT CO.,LTD	CIMFR	CIMFR/TC/P/ H396	28-01-2016	IS/IEC 60079-0:2004, IS/IEC 60079-1:2007 IS/IEC 60529:2001
5	FLP/WP ISOLATION DIRECTION CONTROL VALVE- TYPE DTBZ-37FYC; 0.5A, 18W, 24 V DC	NINGBO HOYEA MACHINERY MANUFACTURE CO.,LTD	CIMFR	CIMFR/TC/P/ H447	24-02-2016	IS/IEC 60079-0:2004, IS/IEC 60079-1:2007 IS/IEC 60529:2001
6	FLAMEPROOF TWIN SOLENOID ASSEMBLY- TYPE 01 EX05 053C yzyz; 10.8 W, 630 mA, 24 V DC	SCHIENLE MAGNETTECHNIK & ELCTRONIK GMBH	CIMFR	CIMFR/TC/P/ H445	23-02-2016	IS/IEC 60079-0:2004, IS/IEC 60079-1:2007 IS/IEC 60529:2001
7	RADIO REMOTE CONTROL TRANSMITTER -  TYPE FYF35; Ui=4.5V, 434MHz, Transmitted Power  10mW	LIANLI AUTOMATION	ERTL(E)	ERTL(E)/TES/C280/0010/12-15	18-04-2016	IS/IEC 60079-0:2004 IS/IEC 60079-11:2006
8	IS ISOLATOR – TYPE KJU 20; Um= 20V, Im=5mA	LIANLI AUTOMATION	ERTL(E)	ERTL(E)/TES/C280/0008/12-15	10-03-2016	IS/IEC 60079-0:2004 IS/IEC 60079-11:2006
9	MINE USE IS ACCUMULATOR – TYPE DX 4.8; Po ≤1.5W, Uo= 4.5V	LIANLI AUTOMATION	ERTL(E)	ERTL(E)/TES/C280/0009/12-15	31-03-2016	IS/IEC 60079-0:2004 IS/IEC 60079-11:2006
10	FLAMEPROOF/WEATHERPROOF PUSH BUTTON SWITCH, TYPE: PB 330	SAFEX	CIMFR	CIMFR/TC/P/ H18 &        DGMS App No. 474	12/04/2011	IS/IEC 60079-0:2004, IS/IEC 60079-1:2007  IS/IEC 60529:2001
11	FLAMEPROOF FLUID STATUS INDICATOR IN CAST IRON CONSTRUCTION,  TYPE: FSIS rated at 24 V	SAFEX	CIMFR	CIMFR/TC/P/ H129 &        DGMS App No. 493	08/06/2011	IS/IEC 60079-11:2006, IS/IEC 60079-0:2004 IS/IEC 60529:2001
12	FLAMEPROOF/WEATHERPROOF HEAD & TAIL LAMP,  TYPE: LF 03; 24/40 W, 24 V DC	SAFEX	CIMFR	CIMFR/TC/SR/ H78  &        DGMS App No. 457	13/05/2011	IS/IEC 60079-11:2006, IS/IEC 60079-0:2004   IS/IEC 60529:2001
13	FLAMEPROOF/INTRINSICALLY SAFE POWER SUPPLY UNIT; Vi= 24 V AC, Vo= 12 V DC	SAFEX	CIMFR	CIMFR/TC/P/ H188, CIMFR/ TC/P/ H96 &        DGMS App No. 332	20/06/2012   24/05/2011	IS/IEC 60079-11:2006, IS/IEC 60079-0:2004 IS/IEC 60529:2001
14	FLUID STATUS INDICATORS-SWITCH,  TYPE: FSIS	SAFEX	CIMFR	CIMFR/TC/P/ 1244, CIMFR/ TC/P /  H129 &        DGMS App No. 493	08/06/2011	IS/IEC 60079-11:2006, IS/IEC 60079-0:2004
15	FLP TEMPERATURE SENSOR SWITCH,  TYPE: FSIS	SAFEX	CIMFR	CIMFR/TC/P/ 1244, CIMFR/ TC/P/ H129 &        DGMS App  No. 493	08/06/2011	IS/IEC 60079-11:2006, IS/IEC 60079-0:2004
16	THE FLAMEPROOF  PLUG AND SOCKET; RATED 225 AMPS 1.1 KV; TYPE : PLG 225	SAFEX	CIMFR	CIMFR/TC/P/ H791	04/03/2014	IS/IEC 60079-0:2004, IS/IEC 60079-1:2007 IS/IEC 60529:2001
17	FLAMEPROOF/WEATHERPROOF FLUID PRESSURE SWITCH; TYPE : S1/FPS/01;	SAFEX	CIMFR	CIMFR/TC/P/ H331	19/10/2011	IS/IEC 60079-0:2004, IS/IEC 60079-1:2007 IS/IEC 60529:2001