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Gomka Trading Centre

Sadashiv Peth, Pune, Maharashtra

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Electric Motors

We are leading Wholesaler, Trader and Distributor of Electric Motors.

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Introduction and Background:

  • Global warming is a reality and world over people are working towards reduction in carbon foot print
  • Electric motor applications, in Indian industry, consume about seventy percent of the generated electrical energy. Improving efficiency of the motor is therefore a major concern in energy-efficiency efforts
  • Electric motors with improved efficiency, in combination with frequency converters can save about 7% of the total worldwide electrical energy. Roughly one quarter to one third of these savings come from the improved efficiency of the motor
  • A need was felt amongst users, consultants and manufacturers in India to revise existing BIS standard IS 12615:2004 to harmonize with the international standards. This will lead us to be in line with international code of standards and practices. This will also result into having uniform test procedures to facilitate the end user to compare the performance and energy efficiency of motors
  • Motors from 0.37kW to 375kW make up the vast majority (approximately 90%) of installed motor population and are covered by the standard IS 12615:2011. This the need of the manufacturers to design motor for a global market. This standard defines four efficiency classes for nominal frequency 50Hz

Salient Features:

  • This standard is primarily based issued by the International Electro technical Commission except that additional performance parameters other than efficiency values have also been included
  • The standard specifies methods used to determine losses and efficiency, with the objective to calculate efficiency values more accurately

New IE efficiency classes are as given below:

Efficiency ClassDescription
IE1Standard efficiencyComparable to eff2
IE2High efficiencyComparable to eff1
IE3PremiumPremium
IE4Super premiumSuper premium

As per the standard, efficiency class of IE4 is under consideration & would be incorporated later. AC three phase squirrel cage, single speed induction motors for.

  • Rated voltage <= 1000V
  • Rated frequency 50Hz
  • Rated output between 0.37kW to 375kW
  • 2Pole, 4Pole and 6Pole
  • Rated on the basis of continuous duty (S1) or intermittent periodic duty (S3) with 80% or higher cyclic duration factor
  • Capable of operating direct on line
  • Rated for ambient temperature of 40 deg centigrade & altitude not exceeding 1000m
  • Degree of protection IP44 or superior
  • Method of cooling IC 411
  • Fixing dimensions as per IS 1231 & IS 2223
  • Determination of total losses with PLL determination from residual losses

This standard does not cover:


  • 8 Pole motors
  • Pole changing motors ( multi speed motors)
  • Motors made exclusively for converter duty application
  • Motors completely integrated into the machine. (for example, pumps, compressors that cannot be tested separately from the machine )
  • Crane & hoist duty motors

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3 Phase Induction Motors

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Fostered with enormous business understanding of this realm, we are involved in presenting a broad consignment of 3 Phase Induction Motors.

 

Features:

 

  • Optimum quality
  • Impeccable finish
  • Long lasting nature
  • Industry proven designs
  • Sturdy
  • Reliable

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Crane Duty Motor

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So as to accomplish high level of customer trust, we are keenly betrothed in offering a broad consignment of Crane Duty Motor.

 

Features:


  • Smooth finish
  • Longer life
  • Precise
  • Minimum maintenance

 

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ABB Electric Motors.

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Reckoned amid one of the credible market names, we are willingly betrothed in offering to our patrons ABB Electric Motors.

Features:

  • High quality
  • Long lasting
  • Customized
  • Reliable
  • Fine finish

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Starting Time and Duty and Cycle :

Motors are designed for continuous (S1) duty. Other type of duty (S2 to S8) can be offered on request. The motors can safely withstand 3 consecutive starts from cold condition and 2 consecutive starts from hot conditions. In applications where more severe starting conditions are encountered, a special inquiry should be made eg.

  • Drives with high inertia e.g. flywheel drives, eccentric presses, large fans, etc.
  • Drives involving intermittent duty of motor with frequent starts e.g. rolling mills, centrifuges and conveyor motors, etc. The inquiry should be accompanied with following information;
  • CD' and relevant speed of driven equipment
  • Duty cycle/sequence of operation/no. of starts/hour Speed-Torque diagram of driven equipment
  • Method of braking (Electrical or Mechanical)

Insulation and Endurance :

  • The motors are provided with class F insulation scheme with temperature rise limited to class B. These motors can be used either at ambient temperature of 55°C or overloaded continuously by 10% (service factor = 1.1). The temperature rise will be still within the limits of class F
  • The slot Insulation consists of Nomex Polyester Nomex (NPN). All insulation materials used are adequately resistant to the action of microbes and fungi

Anti-condensation Method:

  • In order to avoid condensation of water inside the motors, they can be heated up by connecting a voltage 4 to 10% of rated voltage to the motor terminals. Adequate heating is obtained with current equal to 20-25% of rated motor current. Alternatively any of the methods indicated for heating stater winding could be adopted
  • Motors can also be offered with built in space heaters in frame sizes 90S and above

Roller bearing and insulated bearing:

  • Alternatively motors with insulated bearings on NDE side can be offered from frame size 132S & above on request
  • Motors can also be offered with cylindrical roller bearing (NU) on DE side for frames sizes 160M / L and above

Grease:

  • Sealed for life bearings (2Z) are filled with grease N3-ESSO. Others are filled with Lithium based Multipurpose Grease LL3. Special high temperature grease can be provided on request

On line re-greasing:

  • On line re-greasing arrangement is provided in frame sizes 2255 and above. For frame sizes 180M, 180L and 200L it can be provided on request

Rotor:

  • All motors are fitted with dynamically balanced aluminum die cast squirrel cage rotors.

Shaft:

  • All motors are provided with single shaft extension in accordance with 15:1231. The shaft material is C40 (ENS) Steel. However any special shaft extension and/or special shaft material e.g. EN24 or stainless steel grades are also provided on request

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Brake Motors

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Backed by a rich industrial experience, we are engaged in offering a commendable array of Brake Motors.

 

Features:


  • Reliable
  • Longevity
  • Industry proven designs
  • Fine quality

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3 Phase Induction Motor

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Type of MotorAC
PhaseThree Phase

We are dealing in Bharat Bijlee Motors.

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ABB Electric Motors

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TEFC Cage Motor

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