Flame Proof Motors

THE WIDEST AVAILABLE RANGE

SQUIRREL CAGE MOTORS

0.37 kw to 355 kw (Frames E80 toE355 LX)

SLIP RING MOTORS

22 kw to 160 kw

(Frames EW 250 M to EW 315 L)

STANDARD SPECIFICATIONS

415 ± 10% Other Voltage class 
(220 V - 660 V) available on request.

FREQUENCY :
50 ± 5% 25 HZ to 60 HZ available on request.

Combined variation :
± 10 % (absolute sum)

INSULATION :
Class F Class 'H' can be given on request.

RATING/DUTY :
Continuous (S1) Intermittent duties available on request.

MOUNTING :
Horizontal foot mounting (B3)
Other mountings available on request.

PAINT :
Epoxy anticorrosive painted surface
(Standard shade 631 as per IS - 5)

AMBIENT / TEMPERATURE RISE :
450C/750C. Higher Amb. upto 600C on request.

TEMPERATURE CLASS :
T4

DEGREE OF PROTECTION :
IP 54 - E80 - E132 M
E225 M to E355 LX
(IP55 with canopy can be offered.)
IP55 - Frame E 160L to E 200 L.

ERTL / CCOE (PESO) / DGMS approvals as a standard feature. For BASEEFA approval please contact nearest branch office/works.

 

APPLICABLE STANDARDS :

Enclosure

IS 2148 EN 50018

Performance

IS325 BS 5000 (Part 10) IEC60034 -1

Performance for Mines

IS 3682

Dimensions Foot

IS 1231 IEC60072-1

Flange

IS2223 BS4999 Part 414

INDUSTRIAL APPLICATIONS :

Coal Mines.

Petro Chemicals & Chemicals.

Oil Mines & Rigs.

Fertilizers.

Solvent extraction plants.

Paints & Varnish Industry.

LPG Bottling plants.

Agro Chemicals.

Drugs & Pharmaceuticals.

General Industry.

 

SPECIAL PURPOSE MOTORS FOR

⇒ Longwall mining equipment.

⇒ High pressure mine ventilation fans with plug & socket arrangement.

⇒ Auxiliary mine ventilation fans with rod mounting / flange mounting.

⇒ Belt conveyors and armoured face/ chain conveyors.

⇒ Side dump loaders, load haul dumpers

⇒ Haulages (squirel cage and slipring motors).

⇒ Dewatering pumps.

⇒ Sucker rod pumps.

⇒ Mud agitators & mud pumps.

⇒ Slurry extraction pumps.

SPECIAL DESIGN FEATURES AVAILABLE

⇒ Dual voltage (550/1100V) with 9 terminal connections as per NCB 625

⇒ Non standard voltage and frequency variation

⇒ Dual voltage (1:2 or 1: ratio) Tripple voltage (1: : 2 ratio)

⇒ Energy efficient motors High slip motors Motors for frequent starts/stops/reversals

⇒ 10,12,16,18,24,32 pole motors

⇒ Special performance requirements

⇒ Class H insulated motors

⇒ Low vibration and noise level

⇒ Special Bearings

⇒ Tacho mounting

⇒ Special shaft material

⇒ Canopy

⇒ Plug & socket arrangement (30 to 300 Amps, 650 & 1100V) forunderground equipments.

⇒ Special RV/RA for slipring motors.

⇒ Space heaters, thermisters.

⇒ Multispeed motors.

⇒ Double /taper/non standard shaft extention

⇒ Non standard paint shade

⇒ Motors for use with variable frequency inverter supply

TERMINAL BOX AND TERMINAL ARRANGEMENT

⇒ Cast iron construction, forming a separate flame proof enclosure capable of containing internal explosions

⇒ Standard position on right hand side viewed from driving end side except in frames E 80, E/EW 315 L & E 355 LX where it is on top.

⇒ Terminal box on top on specific request.

⇒ New terminal box with spigotted cover & gland plate/sealing box in frames E 160 to 355 LX with following advantages

⇒ Inherently IP 55.

⇒ Spaciously designed for accommodating bigger cables.

⇒ Double decker terminal arrangement for easy termination of two cables.

⇒ Anti loosening terminal arrangement

⇒ For slipring motors, separate terminal box for stator & rotor terminations provided. Stator terminal box is on left hand side while rotor terminal box is on right hand side, viewed from driving end.

⇒ Conduit plate is provided as standard while sealing box provided for group I gases.

⇒ Separate terminal box for auxiliary terminals (space heaters, thermisters) for frame 225 and above on request.

TERMINAL STUD

⇒ Fully non hygroscopic thermosetting moulded glass filled compound.

⇒ Increased clearances & creepages.

⇒ Anti loosening arrangement.

⇒ Metallic bush insert to take tightening pressure. Eliminates breakage of insulation (E160-315LX frames)

BEARING CHART :

STATUTORY APPROVALS :

FLAMEPROOF MOTORS FOR GROUP IIC ATMOSPHERE

A complete range of Crompton Greaves flameproof squirrel cage motors for gas group IIC is now available for Indian Industries as an import substitute. The motors are manufactured as per the most stringent requirements for IIC atmosphere. The motors are duly tested at ERTL. For more details, please contact our nearest branch office / works.

AVAILABLE Pending for approval.

* STANDARD Temperature class T4. Other classes available on request.

* For IIA, IIB Gas Groups

CMRI

:

CENTRAL MINING RESEARCH INSTITUTE, DHANBAD.

DGMS

:

DIRECTORATE GENERAL OF MINES SAFETY, DHANBAD.

CCE

:

CHIEF CONTROLLER OF EXPLOSIVES, NAGPUR.

DGFAS & LI

:

DIRECTORATE GENERAL FACTORY ADVICE SERVICE & LABOUR INSTITUTE, MUMBAI.

BIS

:

BUREAU OF INDIAN STANDARDS, NEW DELHI.

BASEEFA

:

BRITISH APPROVALS SERVICE FOR ELECTRICAL EQUIPMENT IN FLAMMABLE ATMOSPHERES, UK.

ATEX

:

EUROPEAN DIRECTIVE

ERTL

:

ELECTRONIC REGIONAL TEST LABORATORY

NOTE:* Motors as per UK based standards can be supplied against specific enquiries.