Flameproof squirrel-cage induction motor 50 HP (Crompton Greaves)

Government of India o: LÜDoer Directorate Generai of Mines Safety No.

From /EHQ, Dhanbad, dated -2017 Director Mines Safety Directorate Generai of Mines Safety, P.o & Distt: Dhanbad - 826 016.

To Shri Dilip Pawar- Dy. General Manager M/S CG Power and Industrial Solutions Ltd.

A-6/2, MIDC Ahmednagar-414 111 (Maharashtra).

Sub:

Ref:

Renewal of DGMS approval No. 78 Group-I of 1974 under Regulation 181 (3) of the Coal Mines Regulations, 1957 for flameproof squirrel cage induction motor with detachable terminal box with sealing box and gland for wire-armoured cable with external fan and fan cooled rated at 50 HP, 550 V, 3 phase, 50 Hz, 3000 RPM, frame size E225S conforming to IS/IEC 60079-1:2007 and IS/IEC 60079-0:2004 for use in belowground Coal Mines.

ERTL test report No. dated 12.122012.

IDENTIFICATION MARK DCMS APPROVAL NO. 78 Group-I of 1974 Dear Sirs, Please refer to your letter No. LTM/DGMS/REN/2016-17/08 dated 07.02.2017 and subsequent correspondence thereupon the above mentioned subject.

Based on DGMS approval No. 78 Group-I of 1974 issued by this Directorate's letter No. 83/598/EHQ dated 02.05.1974, BIS Licence No. CM/L-0870053 and ERTL test report under reference, I hereby renew the approval uptp 06.04.2019 from the date of i.e.

from 06.04.2017 for use in beiowground Coai Mines, subject Co compliance stipulated in the original approval as well as annexure enclosed with this renewal letter.

The application for renewal should be made at least three (Q3) months before the date of expiry of the approval.

Encl : Annexure Yours faithfuiiy, (Prasanta Kumar Sarkar)

Director Generai cf Mines Safety 78 Gi-cup-I of renewed by Chis Directcrate's lecter dated....

Conditions for renewai of DGMS approval 78 Group-I cf 1374 182 (3)

of tine Coal Mines Regulations, 1957 For flameproof squirrel cage lilCtC' v€tith detachable terminal hox with „ Size conforming !S/fEC 60079-12007 and in iMines.

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(i) Every unit shall carry conspicuously in a permanent manner the aforesaid identification mark/ ie 'DGMS APPROVAL NC. 78 Group-T of 1974 renewed vide . /EHQ dazed.

In addition, every unit shall also carry permanently this Directorate's approval mark as given below .

(ii) In the nameplate marking shall be in accordance with the applicable requirements of the relevant standards.

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

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

(a) The customer shall be supplied the copy. 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 cesting laboratory in their test report(s) so as to maintain safety features of

(b) The customer shali also be provided a copy of factory test report along with drawings, instruction manuai on the installation, operation and maintenance of the equipment and spares parts catalogue at the time of delivery of the equipment.

The user shall furnish the performance report of the equipment directly to this Directorate after one (01) year of actual use Any modification to the equipment that might be considered necessary at a ;ater date shall be effected upon being so directed by this Directorate An officer of this Directorate may at any time draw a sample either from the factory or from the user and get it tested at the cost of the manufacturer. If the test reports are not satisfactory, this approval she!! be deemed tc be susqended.

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if there occurs any .-ev:cic,-: of standards 't the prcduct/equiprnznt, the manufacturer shall get the product/equipment tested as per revised standards End submit test reports tc the ct;stcmer for information and to this Directorate for further approval/renevva!.

The cable ento/ devices, threaded adaotors and stopping plugs stall te suitable fcr for the special type of cabie used in mining, Such entry devices shell be duly certified as per relevant IS/iEC standards.

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

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

In case of aluminium die-cast rotor of the motor, the rotor shall not be dismantled, assembled or kept exposed in the explosive gassy atmospheres to prevent incendive sparking. A caution plate "Aluminium Die-Cast Rotor: Not to be dismantled, assembled or kept exposed in explosive gas atmosphere" shall be provided at conspicuous place without affecting femetTQf fe?tures of the mctor, indicatino that the motor is having aluminium die-cast rotor. Operation & maintenance manual of the motor shall also indicate the danger for aluminium die cast rotor due to incendive sparking.

In case of any permissible variations issued from this Directorate, +hey Shal! also be read along with this letter and the original approval letter.

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.

i.e. from The approval is renewed u t 06.04.2 19 from the ate of ex i 0€.04.2017, The equipment manufactured subsequently shall be identical to the proto type tested at ERTL vide test repot No. ERTL (E)/TES/C184/0025/12-12 dated 12.12.2012.

At the time of applying for renewal, details of supply with name of mines, purchase order and date shall be furnished with the appiication If at any time any of the conditions subject to which this approval has been granted, is violated or not complied with, chis approvaj snail De cjeeiTjeci co have been ieVCKec;

with immediate effect.

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 app'icable at any time.

(Prasanta Kumar Sarkar)

Director Generai of Mines Safety