220512.pdf

Parking Garage Project Number 693-222 Department of Veterans Affairs Wilkes-Barre, Pennsylvania

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SECTION 22 05 12 - GENERAL MOTOR REQUIREMENTS FOR PLUMBING EQUIPMENT

PART 1 - GENERAL

1.1 DESCRIPTION:

This section describes the general motor requirements for plumbing equipment.

1.2 RELATED WORK:

A. Section 26 05 11, REQUIREMENTS FOR ELECTRICAL INSTALLATIONS: General electrical requirements common to more than one section of Division 26.

B. 26 29 11, LOW-VOLTAGE MOTOR STARTERS: Starters, control and protection of motors: Section

C. Section 26 24 19, MOTOR-CONTROL CENTERS: Motor Control Centers.

1.3 SUBMITTALS:

A. In accordance with Section 26 05 11, REQUIREMENTS FOR ELECTRICAL INSTALLATIONS, submit the following:

B. Shop Drawings:

1. Sufficient information, clearly presented, shall be included to determine compliance with drawings and specifications.

2. Motor nameplate information shall be submitted including electrical ratings, dimensions, mounting details, materials, horsepower, power factor, current as a function of speed, current efficiency, speed as a function of load, RPM, enclosure, starting characteristics, torque characteristics, code letter, full load and locked rotor current, service factor, and lubrication method.

3. Motor parameters required for the determination of the Reed Critical Frequency of vertical hollow shaft motors shall be submitted.

C. Manuals:

1. Companion copies of complete maintenance and operating manuals, including technical data sheets and application data shall be submitted simultaneously with the shop drawings.

D. Certification: Two weeks prior to final inspection, unless otherwise noted, four copies of the following certification shall be submitted to the Resident Engineer:

1. Certification shall be submitted stating that the motors have been properly applied, installed, adjusted, lubricated, and tested.

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1.4 APPLICABLE PUBLICATIONS:

A. The publications listed below (including amendments, addenda, revisions, supplements and errata) shall form a part of this specification to the extent referenced. Publications are referenced in the text by designation only.

B. National Electrical Manufacturers Association (NEMA):

MG 1-07.................................Motors and Generators

MG 2-01.................................Safety Standard and Guide for Selection, Installation and Use of Electric Motors and Generators

C. National Fire Protection Association (NFPA):

70-08 .....................................National Electrical Code (NEC)

PART 2 - PRODUCTS

2.1 MOTORS:

A. For alternating current, fractional and integral horsepower motors, NEMA Publications MG 1 and MG 2 shall apply.

B. Voltage ratings shall be as follows:

1. Single phase:

a. Motors connected to 120-volt systems: 115 volts.

C. Number of phases shall be as follows:

1. Motors, less than 373 W (1/2 HP): Single phase.

2. Exceptions:

a. Hermetically sealed motors.

D. Horsepower ratings shall be adequate for operating the connected loads continuously in the prevailing ambient temperatures in areas where the motors are installed, without exceeding the NEMA standard temperature rises for the motor insulation.

E. Motor designs, as indicated by the NEMA code letters, shall be coordinated with the connected loads to assure adequate starting and running torque.

F. Motor Enclosures:

1. Shall be the NEMA types shown on the drawings for the motors.

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2. Where the types of motor enclosures are not shown on the drawings, they shall be the NEMA types, which are most suitable for the environmental conditions where the motors are being installed.

3. Enclosures shall be primed and finish coated at the factory with manufacturer's prime coat and standard finish.

4. All motors in hazardous locations shall be approved for the application and meet the Class and Group as required by the area classification.

G. Electrical Design Requirements

1. Motors shall be continuous duty.

2. The insulation system shall be rated minimum of class B, 130° C (266° F).

3. The maximum temperature rise by resistance at rated power shall not exceed Class B limits, 80° C (176° F).

4. The speed/torque and speed/current characteristics shall comply with NEMA Design A or B, as specified.

5. Motors shall be suitable for full voltage starting, unless otherwise noted.

6. Motors for variable frequency drive applications shall adhere to NEMA standards publication MG 1, Part 30, Application considerations for Constant Speed Motors Used on a Sinusoidal Bus with Harmonic Content and General Purpose Motors Used with Adjustable voltage or Adjustable frequency controls, or both, or Part 31, Definite Purpose Inverter Fed Polyphase Motors.

H. Mechanical Design Requirements

1. Bearings shall be rated for a minimum of 26,280 hours L-10 life at full load direct coupled, except vertical high thrust motors.

2. Vertical motors shall be capable of withstanding a momentary up thrust of at least 30% of normal down thrust.

3. Grease lubricated bearings shall be designed for electric motor use. Grease shall be capable of the temperatures associated with electric motors and shall be compatible with Polyurea based greases.

4. Grease fittings, if provided, shall be Alemite type or equivalent.

5. Oil lubricated bearings, when specified, shall have an externally visible sight glass to view oil level.

6. Vibration shall not exceed 0.15 inch per second, unfiltered peak.

7. Noise level shall meet the requirements of the application.

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8. Motors on 180 frames and larger shall have provisions for lifting eyes or lugs capable of a safety factor of 5.

9. All external fasteners shall be corrosion resistant.

10. Grounding provisions shall be in the main terminal box.

I. Additional requirements for specific motors, as indicated in other sections, shall also apply.

Minimum Efficiencies Open Drip-Proof

Minimum Efficiencies Totally Enclosed Fan-Cooled

Rating kW (HP)

RPM

RPM

RPM

Rating kW (HP)

RPM

RPM

RPM

0.746 (1) 82.5% 85.5% 77.0% 0.746 (1) 82.5% 85.5% 77.0%

1.12 (1.5) 86.5% 86.5% 84.0% 1.12 (1.5) 87.5% 86.5% 84.0%

1.49 (2) 87.5% 86.5% 85.5% 1.49 (2) 88.5% 86.5% 85.5%

2.24 (3) 88.5% 89.5% 85.5% 2.24 (3) 89.5% 89.5% 86.5%

3.73 (5) 89.5% 89.5% 86.5% 3.73 (5) 89.5% 89.5% 88.5%

5.60 (7.5) 90.2% 91.0% 88.5% 5.60 (7.5) 91.0% 91.7% 89.5%

7.46 (10) 91.7% 91.7% 89.5% 7.46 (10) 91.0% 91.7% 90.2%

11.2 (15) 91.7% 93.0% 90.2% 11.2 (15) 91.7% 92.4% 91.0%

14.9 (20) 92.4% 93.0% 91.0% 14.9 (20) 91.7% 93.0% 91.0%

18.7 (25) 93.0% 93.6% 91.7% 18.7 (25) 93.0% 93.6% 91.7%

22.4 (30) 93.6% 94.1% 91.7% 22.4 (30) 93.0% 93.6% 91.7%

29.8 (40) 94.1% 94.1% 92.4% 29.8 (40) 94.1% 94.1% 92.4%

37.3 (50) 94.1% 94.5% 93.0% 37.3 (50) 94.1% 94.5% 93.0%

44.8 (60) 94.5% 95.0% 93.6% 44.8 (60) 94.5% 95.0% 93.6%

56.9 (75) 94.5% 95.0% 93.6% 56.9 (75) 94.5% 95.4% 93.6%

74.6 (100) 95.0% 95.4% 93.6% 74.6 (100) 95.0% 95.4% 94.1%

93.3 (125) 95.0% 95.4% 94.1% 93.3 (125) 95.0% 95.4% 95.0%

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112 (150) 95.4% 95.8% 94.1% 112 (150) 95.8% 95.8% 95.0%

149.2 (200) 95.4% 95.8% 95.0% 149.2 (200) 95.8% 96.2% 95.4%

K. Minimum Power Factor at Full Load and Rated Voltage: 90 percent at 1200 RPM, 1800 RPM and 3600 RPM. Power factor correction capacitors shall be installed unless the motor is controlled by a variable frequency drive. The power factor correction capacitors shall be able to withstand high voltage transients and power line variations without breakdown.

PART 3 - EXECUTION

3.1 INSTALLATION:

Install motors in accordance with manufacturer’s recommendations, the NEC, NEMA, as shown on the drawings and/or as required by other sections of these specifications.

3.2 FIELD TESTS

Megger all motors after installation, before start-up. All shall test free from grounds.

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