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Lotus Fibre - The Leader in FRP MOULDED & FABRICATION items, Motor Canopies, FRP Canopies for motors, LCS, Transmitters manufacturer in Mumbai India, Cable Trays, FRP Cable Trays, GRP Cable Trays, FRP Junction Boxes, FRP Pole Boxes, FRP Junction Boxes for Instrumentation, Transmitters, FRP Power Junction Boxes for Electrical, FRP Local Control Station, FRP Electrical Panel, FRP Distribution Boards Manufacturer in Mumbai India

FRP MOTOR CANOPIES - PROTECTION SHELL

The necessity to protect the equipment, needs no emphasis. The daily failures due to one reason or the other is reminding us always. A little money extra spent on the protective means, is worth, than facing the breakdown and failures i.e. PRODUCTION LOSS. The motors are invariably subjected to abnormal circumstances (other than the designed parameters) such as

NATURE OF WORK

• INSTALLED DIRECTLY UNDER SUN/RAIN

• INSTALLED IN DUSTY ATMOSPHERE

• INSTALLED IN THE VICINITY OF FLYING OBJECTS (e.g. waste paper, clothes, leaves etc.)

ACCIDENTAL CONDITIONS

• Hit by falling object

• Excessive heating due to fire or heat in the vicinity.

• Splash of oil/acid/ corrosive substances

The motors should be protected from abnormal eventualities and should be guarded to minimize the risk of damages.

PRODUCTS
To protect the equipment PROTECTION SHELL is suggested, which is a cover made of FRP ( hand lapping process)

WHY FRP? Because FRP is

• RESISTANT TO CORROSIVE ENVIRONMENT OF COASTAL AREAS/CHEMICAL PLANTS/ REFINERIES

• MECHANICALLY STRONG

• NO WATER ABSORPTION

• HIGHLY INSULATING MATERIAL

• U.V. STABILISED

• AESTHETIC LOOKS

• MAINTENANCE FREE

• LIGHTWEIGHT

• EXCELLENT WEATHERABILITY

MOTOR PROTECTION SHELL (MOTOR CANOPIES)
The salient feature are:

1. One piece moulding giving a monolithic construction.

2. LOUVERS are FRP Moulded and provided all around the protection shell (due care has been taken towards the cooling requirement of the motor under full load conditions). The ~a ~ advantage of FRP MOULDED LOUVERS IS THE LIFE, these louvers will last upto the life of the shell ( Unlike the other type of louvers that buckle in a short span under the influence of U .V. RAYS from the sunlight.)

3. Have appropriate fixing arrangement for the ease of installation at site.

4. MECHANICALLY STRONG. Extra thickness is given at appropriate places, enabling this to • withstand the Stresses and Shocks to which it is normally subjected to at site during its lifespan.

5. Lifting handle is provided.


SHAPE AND SIZE
The size of the MOTOR PROTECTION SHELL is based on the physical dimensions of the motor cover it is so selected that a uniform clearance of at least 50mm is maintained on all sides with respect to the motor body for the purpose of:

• PROPER CIRCULATION OF AIR ALONG WITH THE LOUVERS

• FOR THE EASE OF INSTALLATION/ LIFTING
  
  It Should Cover The Motor Fully To Protect From

• Rain water

• Chemical or water spillages

• Accidental fall of some material or the hit of some flying object under abnormal circumstances
   

INSTALLATION :
NO SPECIAL SKILL IS REQUIRED JUST KEEP THE SHELL OVER THE REQUIRED ARRANGEMENTS.
The Motor protection shell is special designed by considering the general site conditions, the mounting arrangement The height of FRP Angles) is adjusted according to the required parameters such as height of the motor above the foundation, rail mounted, flange mounted, resting directly over the foundation etc.


PRECAUTION
The MOTOR PROTECTION SHELL should not significantly restrict air ( Ventilation) Passage as such condition will lead to the burning of the motor
(IT IS NOT SUPPOSED TO HAVE BOX LIKE SITUATION)

SPECIFICATION SHEET

THE NEED OF LOUVERS IN FRP MOTOR PROTECTION SHELL
The losses produced in the core and conductor of electrical motors are converted in to heat, which raises the temperature of the several parts. The presence of ambient air and cooling or ventilation system tends to drop the temperature of the motor. The temperature rise actually depends upon the conditions of cooling & amount of heat produced. The final temperature is reached when the rate of heat PRODUCTION and DISSIPATION EQUALS.

A HOT BODY DISSIPATES HEAT BY
1) RADIATION
2) CONDUCTION
3) CONVECTION

Most of the heat is removed from electrical motor by a combination of convection and conduction assisted somewhat by radiation from the outside surface.

The estimation of the cooling, of machine particularly a large one is matter of first importance as the rating of the machine depends upon proper ventilation of being maintained, When the motor is covered by FRP COVER (FRP is THERMAL INSULATING MATERIAL) one mode of heat dissipation i.e. RADIATION become non- existent. Over and above the heat from the body of the machine raises the temperature of the surrounding air entrapped between the body of the machine and thermally insulated FRP motor cover. This lead to the situation where the motor is at risk.

The louvers are must and it should be sufficient in number in order to avoid such situation, by providing louvers air circulation is established and the heat dissipation is not effected in any way by covering the motors with FRP cover and there is no temperature rise.

This is a general table showing the relation between FRAME SIZE AND MOTOR RATING.
( For exact rating, please refer the motor manufacturer's catalogue)

NOTE:
Rotating part is to be separately guarded
Please mention the FRAME SIZE, FLP/NFLP, MOUNTING
Arrangement such as B3,V1.V6, etc. While ordering

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