stark motors
Monark ISO 9001 Company

Standards & Construction

Three Phase Motors Confirm to following Indian & International Standards

  • IS : 325 : Three phase Induction motors-specification
  • IS : 12065-1987 : Permissible noise level for Rotating Machinery
  • IS : 8789-1996 : Values of performance Characteristics For Three Phase Induction Motors
  • IS : 12802-1989 : Temperature Rise Measurements of Rotating Electrical Machines
  • IS : 4029-1967 : Guide for testing Three phase Induction motors.
  • IS : 3043-1987 : Code of Practice for Earthing
  • IS : 900-1992 : Code of Practice for Instillation & Maintenance of Induction Motors
  • IS : 6362-1995 : Designation of Methods of Cooling of Rotating Electrical Machines
  • IS : 12824-1989 : Types of Duty & Classes of Rating Assigned to Rotating Electrical Machines
  • IS : 12615-2011 : Induction Motors -Energy Efficient, Three Phase Squirrel Cage-Specification
  • IS : 60529-1985 : Degrees of Protection Provided by Enclosures for Rotating Electrical Machinery
  • IS : 8223-1999 : Dimensions &* Output Rating for Foot Mounted Rotating Electrical Machines with Frame Nos. - 355 to 1000
  • IS : 2253-1974 : Designations for Types of Construction & Mounting Arrangements of Rotating Electrical Machines
  • IS : 2223-1983 : Dimensions of Flange Mounted AC Induction Motors
  • IS : 1231-1974 : Dimensions of Three Phase, Foot Mounted Induction Motors
  • IS : 4728:1975 : Terminal Markings & Direction of Rotation for Rotating Electrical Machinery
  • IS : 12075-1987 : Mechanical Vibration of Rotating Electrical Machines with Shaft Height 56mm & Higher Measurement.

Evaluation & Limits of Vibration Severity

International Standards
  • IEC 60034-1,5 : Rotating Electrical Machines - Rating and Performance, Degrees of Protection
  • IEC 60072 : Dimension and output ratings of Rotating Electrical machines. International Standards
  • IEC 60034-1,5 : Rotating Electrical Machines - Rating and Performance, Degrees of Protection
  • IEC 60072 : Dimension and output ratings of Rotating Electrical machines.

  • Insulation - Class F, Class H (on request)
    Supply - 415v, 50Hz
    Standard cooling - Totally enclosed fan cooled
    TENV on request
    External forced cooling on request
    Enclosure - (IP 54 or IP 55 on request)

Stator Frames and End Shields

  • These are rugged components of cast iron confirming to IS 210
  • The stator frames are of deep fin construction to ensure adequate cooling surface

Terminal Box

  • Terminal box is located on the right hand side of the motor when viewed from Drive end
  • The terminal box is turnable at 180°C to permit cable entry from any direction
  • Multi mount option is available on request (80 Frame to 132 Frame)

Bearings

Rotor and Shaft Assembly

  • Pressure die-cast aluminium rotors
  • Dynamically balanced for vibration free operation

Stators

  • All copper windings, copper wires confirm to IS 4800 - Part V
  • Surge tested for short grounds and phase unbalance
  • Multiple dips protect against heat, moisture and contaminants
  • Wound Stators are Vacuum Impregnated with high temperature insulating varnish.
  • A final dip in epoxy insulating enamel provides a protective over coat

Insulation

  • Class F
  • Non-hygroscopic, high dielectric and mechanical strength
  • Epoxy coating provides additional protection
  • Class H on request

Bearing

  • Cast iron housing
  • Double side shielded bearing upto 100 frame
  • Pre-packed lubricants from SKF BEARING

Testing

  • All motors are tested in the course of manufacture and before dispatch as per relevant
  • Bureau of Indian Standards (IS12615) and EN60034-1

Paint

  • MRF Polyurethane paints, Stark Blue & Grey

Ranges

  • Range : 0.18 KW (0.25 HP) to 30 KW (40 HP)
  • Speed : 350/500/750/1000/1500/3000 rpm
  • Volt : 42v/48v/110v/220v/380v/415v/670v

Quality Approvals


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