AUTHORIZED DISTRIBUTORS OF HINDUSTAN MOTORS


FLAMEPROOF MOTORS

 
Flameproof Motors
 
 
 
 
 
INTRODUCTION

RANGE:
"Hindustan" flameproof motors Ex'd' are avialable from frame size 63 FLP to 250M FLP in 2, 4, 6, 8, pole designs. The motors are suitable for continuous duty (S1), ignition groups G1 to G4 or temperature class T1 to T4 as per IS 6381 with ambient temperature of 450C & site altitudes of upto 1000 meters above mean sea level.
 
DESIGN FEATURES :
The flameproof enclosure consists of sturdy cast iron parts, which are mechanically robust & very liberally designed. The cast iron enclosure of motors is built to withstand any internal explosion.

The gaps of joints & where the shaft passes through the frame are so dimensioned as to prevent transmission of igniting flame to the surroounding atmosphere. The motors are so designed that the frame temperature will remain below the ignition temperature of the gas-air mixture involved.

All cast iron parts forming the flameproof enclosure are tested at 14kg/cm2 (required 10kg/cm2) hydraulic pressure. All the seats of joints are carefully machined to strict tolerance & rigidly inspected to ensure that the permissible gaps are not exceeded.

Flameproof motors are manufactured to serve the industries such as coalmines, refineries, petro-chemical industries where flammable gases, vapours, fumes & coal dust are natural atmospheric hazards.
The motors comply with Indian Standard IS: 2148-1981 for gas groups I, IIA, IIB & IIC. These motors can be used in all divisions I & certain division II areas as laid down in guide for selection of electrical equipment in hazardous area as per IS:5571-1979.

VOLTAGE & FREQUENCY :
The motors are designed for 3 phase 415V+10% & 50Hz+5% with combined variation of +10%. Any other voltage & or frequency is available upon request.

 
CABLE ENTRIES :
Motors can be supplied with either conduit entry or cables entry system. Cable is suitable for paper insulated lead covered double wire armoured (PILCDWA) cables. Cable entry with flameproof cable glands can also be provided to suit PVC armoured mining cables.
 
PERFORMANCE :
Performance is as per IS: 3682 for the motors used in underground mines & IS: 325 for any other industrial applications.
 
INSULATION & PROTECTION :
Motors are designed with class F insulation having class B temp, rise & IP55 degree of protection as per IS: 4691.
 
MOUNTING
Standard mounting arrangements are foot mounted (B3) or flange mounted (B5). Any other tha these can be provided on request.
 
APPROVAL CERTIFICATES
• C.M.R.I.Dhanbad
• D.G.F.A.S.L.& I..Mumbai
• C.C. oE. Nagpur
• BIS license IS: 2148-1981.
 
 
MOUNTING POSITIONS