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Variable Speed Motor Drives
2 Products availableElectric Motors & Components
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1 Products availableInduction Motor
1 Products availableGenerators
1 Products availableOur product range contains a wide range of Industrial Motors, energy efficient motors, Flame Proof Motors, crane duty motors and Crane Motor
Energy Efficiency level 2 as per IS:12615
Energy Efficiency as per CEMEP Standards prevalent in Europe
'V' seal arrangement up to 355 frame - Easier assembly of bearing housing
Integral bearing cover with endshield up to 225 frame
Larger terminal box for accommodating bigger Aluminium cables
Sophisticated CNC Machines, Most Advanced Manufacturing Technology & Test Plant - Improved reliability.
| ELECTRICAL | MECHANICAL | |
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| Non Standard Voltage And Frequency Variation | Non Standard Mounting Dimensions | |
| Duel Voltage Triple Voltage |
Special shaft Extension | |
| Inverter fed Supplies And AC Variable Speed drives |
Double shaft Extension | |
| Energy Efficient Motors | Low Vibration & Noise Level | |
| High Slip Motors | Shock Grade Motors | |
| Motors For Frequent starts/stops/reversals (e.g. crane duty) |
Motors for Hazardous areas | |
| Torque Motors | Motors For Dust Laden Atmosphere | |
| High Frequency Motors | Brake Motors | |
| Textiles Motors | Canopy for horizontal mounting motors | |
| 10,12,16,18,24,32 Pole Motors | Special Bearings like Thrust Bearings | |
| Special Performance Requirements | Tacho Mounting | |
| Class H insulated Motors | Non Standard Paint Shade and Painting Procedure for required Dry Film Thickness |
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| Motors With Service Factor | Fabricated Steel Enclosure Alternate Terminal Box Position |
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| Slipring Motors with Bar-wound rotors for Frames 280 to 400 |
Special Shaft Material | |
| Motors for operation on Variable Frequency Drive - Refer note on next Pages |
Stainless Steel/ Brass Hardware Accessories like Resistance Temperature Detectors, Bearing Temperature Detectors, Thermocouples, Plug & Socket |
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| Custom Size Fabricated terminal box & Terminal Arrangements. |
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Crompton Greaves has now developed a complete family of high efficiency motors confirming to Eff level 1 standards of IEEMA : 19-2000 and other applicable standards in Europe and rest of the world.
These motors are available in TEFC construction for use in safe areas and also in flameproof enclosure for use in Hazardous areas.
SPECIAL DESIGN FEATURES :Higher efficiencies are achieved by following special features :
Low loss special grade of thinner laminations. This reduces the Iron loss even at partial loads.
Thicker conductors and more copper contents reduce copper loss due to lower resistance.
Longer core length, reduced and uniform air gap between stator and rotor to reduce stray losses .
Special design of fan and fan cover to reduce windage losses.
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)
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415 ± 10% Other Voltage class |
FREQUENCY : |
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Combined Variation : |
INSULATION : |
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RATING/DUTY : |
MOUNTING : |
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PAINT : |
AMBIENT / TEMPERATURE RISE : |
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TEMPERATURE CLASS : |
DEGREE OF PROTECTION : |
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ERTL / CCOE (PESO) / DGMS approvals as a standard feature. For BASEEFA approval please contact nearest branch office/works. |
Prabal series squirrel cage/slip ring Crane duty motors are specially designed for service on cranes and hoists. They can also be used for similar applications such as material handling equipments, and cranes of all types. These motors can serve as auxiliary motors in rolling mills or wherever intermittent duty drives are required.
These are duty type rated motors developing high starting torque with low starting current. The motors are suitable for frequent starts/ stops and reversals. Also rapid acceleration is achieved by high pull out torquelrotor inertia ratio.
Crane duty motors are used for following applications in majority: Cranes & hoists: long travel drive, cross travel drive, main hoist, auxiliary hoist. Material handling equipments: various conveyors Lifts Rolling mills
Manufacturing range for cast iron slip ring crane duty motors is from 112 to 400 frame. The same for squirrel cage motors in cast iron enclosure is from 80-400 & in aluminium enclosure is from 63-160.
Squirrel cage crane duty motors are supplied with horizontal foot- mounting. However, motors suitable for foot / flange / face mounting or any combination of these with vertical or horizontal orientation can be offered when required. Slip ring motors are normally available with foot mounting Flange mounting can be supplied on specific request.
Crane duty motors are suitable for 3 phase supply and can be wound for any single voltage from 220 to 650 volts and frequencies from 50 Hz or 60 Hz. The rotor voltage is committed for stator supply of 415 V, 50 HZ.For other supply conditions, Rv to be confirmed from CG.
The motors are rated at 45C ambient temperature. For temperatures, other than 45C, a deration factor has to be applied as indicated below.
