Copyright 1995 AIAMASTERSPEC9/95

DUBAIWORLDCENTRALINTERNATIONALAIRPORT

PHASE I – Design of Buildings

Contract No. JXB1/BLD/431- PASSENGERTERMINALBUILDING

SECTION 15170

MOTORS

PART 1 - GENERAL

1.1RELATED DOCUMENTS

  1. Drawings and general provisions of the Contract, including Conditions of Contract and Division1 Specification Sections, apply to this Section.

1.2SUMMARY

  1. This Section includes basic requirements for factory-installed and field-installed motors.
  2. Related Sections include the following:
  3. Division15 Sections for application of motors and reference to specific motor requirements for motor-driven equipment.
  4. Division 16 Sections for application of motors with Variable Frequency Drives (VFD).

1.3SUBMITTALS

  1. Product Data: Show nameplate data and ratings; characteristics; mounting arrangements; size and location of winding termination lugs, conduit entry, and grounding lug; and coatings.
  2. Factory Test Reports: For specified tests.
  3. Field Test Reports: Indicate and interpret test results for compliance with performance requirements.

1.4QUALITY ASSURANCE

  1. Comply with related electrical Standards, referred to in Division 16.
  2. Comply with DEWA regulations for electrical installations.

PART 2 - PRODUCTS

2.1BASIC MOTOR REQUIREMENTS

  1. Basic requirements apply to mechanical equipment motors, unless otherwise indicated.
  2. Motors shall be of the energy efficient design.
  3. Motors 0.37 kW (1/2 HP) and Larger: Three phase, 400V up to 150 kW (200 HP) and soft starters or 11,000 V for 150 kW (250 HP) and larger.
  4. Motors smaller than 0.37 (1/2 HP): Single phase, 230 V.
  5. Frequency Rating: 50 Hz, unless otherwise indicated.
  6. Voltage Rating: Determined by voltage of circuit to which motor is connected.
  7. Service Factor: According to IEC 60034 and 60072, unless otherwise indicated.
  8. Capacity and Torque Characteristics: Rated for continuous duty and sufficient to start, accelerate, and operate connected loads at designated speeds, in indicated environment, with indicated operating sequence, and without exceeding nameplate ratings or considering service factor.
  9. Enclosure: Totally enclosed, fan-cooled type, unless otherwise indicated.
  10. Index of Protection (IP): Motors shall be IP65for outdoor use andIP43 for indoor use.
  11. Temperature Rise: Shall not exceed the permissible limit for the insulation class based on 50 deg. C (122 deg. F) ambient temperature, for outdoors conditions and 40 deg. C for indoor conditions unless otherwise indicated.
  12. Motors that utilize a Variable Frequency Drive (VFD) shall be inverter rated and shall comply with Division 16, Section “Motor Control Centers”.

2.2THREE PHASE MOTORS

  1. Description: IEC 60034 and 60072, medium induction motor.
  2. Design Characteristics: IEC Standards, unless otherwise indicated.
  3. Energy-Efficient Design: Premium efficiency – Class “eff1”, unless otherwise indicated. Classification in accordance with the definition set by the “European Commission of Electric Machinery and Power Electronics Manufacturers”.
  4. Stator: Copper windings, unless otherwise indicated. Multispeed motors have separate winding for each speed.
  5. Rotor: Squirrel cage, unless otherwise indicated.
  6. Bearings: Double-shielded, prelubricated ball bearings suitable for radial and thrust loading.
  7. Temperature Rise: Match insulation rating, unless otherwise indicated.
  8. Insulation: Unless otherwise indicated, ClassB for motors located in air-conditioned spaces and Class F for motors located outside or in non air-conditioned spaces.
  9. Motors Used with Reduced-Inrush Controllers: Match wiring connection requirements for indicated controller, with required motor leads brought to motor terminal box to suit control method. Maximum permissible starting current shall be 5 times the Full Load Current (FLC).
  10. Motors Used with Variable-Frequency Controllers: Ratings, characteristics, and features coordinated with and approved by controller manufacturer.
  11. Critical vibration frequencies are not within operating range of controller output.
  12. Temperature Rise: Match rating for ClassF insulation.
  13. Insulation: ClassF.
  14. Thermal Protection: Where indicated, conform to IEC requirements for thermally protected motors.
  15. Rugged-Duty Motors: Where indicated, motors are totally enclosed with 1.25 minimum service factor, greased bearings, integral condensate drains, and capped relief vents. Windings are insulated with nonhygroscopic material. External finish is chemical-resistant paint over corrosion-resistant primer.
  16. Source Quality Control: Perform the following routine tests according to IEC:
  17. Measurement of winding resistance.
  18. No-load readings of current and speed at rated voltage and frequency.
  19. Locked rotor current at rated frequency.
  20. High-potential test.
  21. Alignment.

2.3SINGLE-PHASE MOTORS

  1. Type: As indicated or selected by manufacturer from one of the following, to suit starting torque and other requirements of specific motor application.
  2. Permanent-split capacitor.
  3. Split-phase start, capacitor run.
  4. Capacitor start, capacitor run.
  5. Insulation: Unless otherwise indicated, ClassB for motors located in air-conditioned spaces and Class F for motors located outside or in non air-conditioned spaces.
  6. Energy-Efficient Design: Premium efficiency – Class “eff1”, unless otherwise indicated. Classification in accordance with the definition set by the “European Commission of Electric Machinery and Power Electronics Manufacturers”.
  1. Shaded-Pole Motors: Do not use, unless motors are smaller than 0.037 kW (1/20hp).
  2. Thermal Protection: Where indicated or required, internal protection automatically opens power supply circuit to motor when winding temperature exceeds a safe value calibrated to temperature rating of motor insulation. Thermal protection device automatically resets when motor temperature returns to normal range, unless otherwise indicated.
  3. Bearings: Ball-bearing type for belt-connected motors and other motors with high radial forces on motor shaft. Sealed, prelubricated sleeve bearings for other single-phase motors.

PART 3 - EXECUTION

3.1ADJUSTING

  1. Use adjustable motor mounting bases for belt-driven motors.
  2. Align pulleys and install belts.
  3. Tension according to manufacturer's written instructions.
  4. Install power feeders to motors in raceways. Locate raceways close to motor terminal box and use liquidtight flex for final connection to motor terminal box.
  5. Motors located in classified areas shall be installed in accordance with IEC recommendations for“Hazardous (classified) Locations”.

3.2COMMISSIONING

  1. Check operating motors for unusual conditions during normal operation. Coordinate with the commissioning of the equipment for which the motor is a part.
  2. Take measurements and prepare a log of voltage, current, frequency, and power.
  3. Report unusual conditions.
  4. Report current deficiencies of field-installed units.

END OF SECTION 15170

MOTORS

November 2006Section 15170 - Page 1/4