SECTION 15170

MOTORS

PART	GENERAL

SECTION INCLUDES

Single phase electric motors.

Three phase electric motors.

RELATED SECTIONS

Section 16180 - Equipment Wiring Systems: Electrical characteristics and wiring connections.

REFERENCES

AFBMA 9 - Load Ratings and Fatigue Life for Ball Bearings.

AFBMA 11 - Load Ratings and Fatigue Life for Roller Bearings.

IEEE 112 - Test Procedure for Polyphase Induction Motors and Generators.

NEMA MG 1 - Motors and Generators.

NFPA 70 - National Electrical Code.

SUBMITTALS

Submit under provisions of Section [01300]. [________].

Product Data: Provide wiring diagrams with electrical characteristics and connection requirements.

Test Reports: Indicate test results verifying nominal efficiency and power factor for [three phase] motors larger than [1/2] [5] [20] [_____] horsepower.

Manufacturer's Installation Instructions: Indicate setting, mechanical connections, lubrication, and wiring instructions.

OPERATION AND MAINTENANCE DATA

Submit under provisions of Section [01700]. [________].

Operation Data: Include instructions for safe operating procedures.

Maintenance Data: Include assembly drawings, bearing data including replacement sizes, and lubrication instructions.

QUALIFICATIONS

Manufacturer: Company specializing in manufacture of electric motors for [_______________] use, and their accessories, with minimum [three] [_____] years documented product development, testing, and manufacturing experience.

REGULATORY REQUIREMENTS

Conform to [applicable electrical code] [NFPA 70] [local energy code] [___________].

Provide certificate of compliance from [authority having jurisdiction] [________________] indicating approval of high efficiency motors.

Products Requiring Electrical Connection: Listed and classified by [Underwriters' Laboratories, Inc.], [testing firm acceptable to the authority having jurisdiction] as suitable for the purpose specified and indicated.

DELIVERY, STORAGE, AND HANDLING

Deliver, store, protect and handle products to site under provisions of Section [01600]. [________].

Protect motors stored on site from weather and moisture by maintaining factory covers and suitable weather-proof covering. [For extended outdoor storage, remove motors from equipment and store separately].

WARRANTY

Provide [five] [____] year warranty under provisions of Section [01700]. [________].

Warranty: Include coverage for motors larger than [20] [_______] horsepower.

PART	PRODUCTS

MANUFACTURERS

[__________________________________].

[__________________________________].

[__________________________________].

Substitutions: Under provisions of Section [01600]. [________].

GENERAL CONSTRUCTION AND REQUIREMENTS

Motors Less Than 250 Watts, for Intermittent Service: Equipment manufacturer's standard and need not conform to these specifications.

Electrical Service:

Refer to Section 16180 for required electrical characteristics.

***** [OR] *****

Motors [1/2] [3/4] HP and Smaller: [115] [_____] volts, single phase, 60 Hz.

Motors Larger than [1/2] [3/4] Horsepower: [_______] volts, three phase, 60 Hz.

Type:

Open drip-proof except where specifically noted otherwise.

Motors: Design for continuous operation in 40 degrees C environment.

Design for temperature rise in accordance with NEMA MG 1 limits for insulation class, service factor, and motor enclosure type.

Motors with frame sizes [254T] [_____] and larger: Energy Efficient Type.

Explosion-Proof Motors: UL approved and labelled for hazard classification, with over temperature protection.

Visible Nameplate: Indicating motor horsepower, voltage, phase, cycles, RPM, full load amps, locked rotor amps, frame size, manufacturer's name and model number, service factor, power factor, [efficiency].

Wiring Terminations:

Provide terminal lugs to match branch circuit conductor quantities, sizes, and materials indicated. Enclose terminal lugs in terminal box sized to NFPA 70, threaded for conduit.

For fractional horsepower motors where connection is made directly, provide [threaded] conduit connection in end frame.

SINGLE PHASE POWER - SPLIT PHASE MOTORS

Starting Torque: Less than 150 percent of full load torque.

Starting Current: Up to seven times full load current.

Breakdown Torque: Approximately 200 percent of full load torque.

Drip-proof Enclosure: Class A (50 degrees C temperature rise) insulation, NEMA Service Factor, prelubricated sleeve or ball bearings.

Enclosed Motors: Class A (50 degrees C temperature rise) insulation, 1.0 Service Factor, prelubricated ball bearings.

SINGLE PHASE POWER - PERMANENT-SPLIT CAPACITOR MOTORS

Starting Torque: Exceeding one fourth of full load torque.

Starting Current: Up to six times full load current.

Multiple Speed: Through tapped windings.

Open Drip-proof or Enclosed Air Over Enclosure: Class A (50 degrees C temperature rise) insulation, minimum 1.0 Service Factor, prelubricated sleeve or ball bearings, automatic reset overload protector.

SINGLE PHASE POWER - CAPACITOR START MOTORS

Starting Torque: Three times full load torque.

Starting Current: Less than five times full load current.

Pull-up Torque: Up to 350 percent of full load torque.

Breakdown Torque: Approximately 250 percent of full load torque.

Motors: Capacitor in series with starting winding; provide capacitor-start/capacitor-run motors with two capacitors in parallel with run capacitor remaining in circuit at operating speeds.

Drip-proof Enclosure: Class A (50 degrees C temperature rise) insulation, NEMA Service Factor, prelubricated [sleeve] [ball] bearings.

Enclosed Motors: Class A (50 degrees C temperature rise) insulation, 1.0 Service Factor, prelubricated ball bearings.

THREE PHASE POWER - SQUIRREL CAGE MOTORS

Starting Torque: Between 1 and 1-1/2 times full load torque.

Starting Current: Six times full load current.

Power Output, Locked Rotor Torque, Breakdown or Pull Out Torque: NEMA Design B characteristics.

Design, Construction, Testing, and Performance: Conform to NEMA MG 1 for Design B motors.

Insulation System: NEMA Class B or better.

Testing Procedure: In accordance with IEEE 112. Load test motors to determine free from electrical or mechanical defects in compliance with performance data.

Motor Frames: NEMA Standard T-Frames of steel, aluminum, or cast iron with end brackets of cast iron or aluminum with steel inserts.

Thermistor System (Motor Frame Sizes 254T and Larger): Three PTC thermistors imbedded in motor windings and epoxy encapsulated solid state control relay for wiring into motor starter; refer to Section 16483 - Motor Starters.

Bearings: Grease lubricated anti-friction ball bearings with housings equipped with plugged provision for relubrication, rated for minimum AFBMA 9, L-10 life of 20,000 hours. Calculate bearing load with NEMA minimum V-belt pulley with belt centre line at end of NEMA standard shaft extension. Stamp bearing sizes on nameplate.

Sound Power Levels: To NEMA MG 1.

Part Winding Start [Where Indicated] [Above 254T Frame Size]: Use part of winding to reduce locked rotor starting current to approximately 60 percent of full winding locked rotor current while providing approximately 50 percent of full winding locked rotor torque.

Weatherproof Epoxy [Sealed] [Treated] Motors: Epoxy [seal windings using vacuum and pressure] [coat windings] with rotor and starter surfaces protected with epoxy enamel; bearings double shielded with waterproof non-washing grease.

Nominal Efficiency: As scheduled at full load and rated voltage when tested in accordance with IEEE 112.

Nominal Power Factor: As scheduled at full load and rated voltage when tested in accordance with IEEE 112.

PART	EXECUTION

APPLICATION

Single phase motors for [shaft mounted fans] [oil burners] [centrifugal pumps]: Split phase type.

Single phase motors for shaft mounted fans or blowers: Permanent split capacitor type.

Single phase motors for [fans] [pumps] [blowers] [air compressors]: Capacitor start type.

Single phase motors for [fans] [blowers] [pumps]: Capacitor start, capacitor run type.

Motors located in [exterior locations] [wet air streams downstream of sprayed coil dehumidifiers] [draw thru cooling towers] [air cooled condensers] [humidifiers] [direct drive axial fans] [roll filters] [explosion proof environments] [dust collection systems] [________]: Totally enclosed type.

Motors located in [outdoors] [wet air streams downstream of sprayed coil dehumidifiers] [draw thru cooling towers] [humidifiers] [________]: Totally enclosed weatherproof epoxy-treated type.

Motors located in [outdoors] [draw thru cooling towers] [________]: Totally enclosed weatherproof epoxy-sealed type.

INSTALLATION

Install in accordance with manufacturer's instructions.

Install securely on firm foundation. Mount ball bearing motors with shaft in any position.

Check line voltage and phase and ensure agreement with nameplate.

NEMA OPEN MOTOR SERVICE FACTOR SCHEDULE

HP	3600 RPM	1800 RPM	1200 RPM900 RPM

1/6-1/3	1.35	1.35	1.35	1.35

1/2	1.25	1.25	1.25	1.15

3/4	1.25	1.25	1.15	1.15

1	1.25	1.15	1.15	1.15

-150	1.15	1.15	1.15	1.15

PERFORMANCE SCHEDULE: THREE PHASE - ENERGY EFFICIENT, OPEN DRIP-PROOF

Minimum

Minimum	Percent

NEMA	Percent	Power

HP	RPM(Syn)	Frame	Efficiency	Factor

1	1200	145T	81	72

1-1/2	1200	182T	83	73

2	1200	184T	85	75

3	1200	213T	86	60

5	1200	215T	87	65

7-1/2	1200	254T	89	73

10	1200	256T	89	74

15	1200	284T	90	77

20	1200	286T	90	78

25	1200	324T	91	74

30	1200	326T	91	78

40	1200	364T	93	77

50	1200	365T	93	79

60	1200	404T	93	82

75	1200	405T	93	80

100	1200	444T	93	80

125	1200	444T	93	84

1	1800	143T	82	84

1-1/2	1800	145T	84	85

2	1800	145T	84	85

3	1800	182T	86	86

5	1800	184T	87	87

7-1/2	1800	213T	88	86

10	1800	215T	89	85

15	1800	256T	91	85

20	1800	256T	91	86

25	1800	284T	91	85

30	1800	286T	92	88

40	1800	324T	92	83

50	1800	326T	93	85

60	1800	364T	93	88

75	1800	365T	93	88

100	1800	404T	93	83

125	1800	405T	93	86

150	1800	444T	93	85

200	1800	445T	94	85

1-1/2	3600	143T	82	85

2	3600	145T	82	87

3	3600	145T	84	85

5	3600	182T	85	86

7-1/2	3600	184T	86	88

10	3600	213T	87	86

15	3600	215T	89	89

20	3600	254T	90	89

25	3600	256T	90	92

30	3600	284T	91	91

40	3600	286T	92	92

50	3600	324T	93	89

60	3600	326T	93	91

75	3600	364T	93	88

100	3600	365T	92	88

PERFORMANCE SCHEDULE: THREE PHASE-ENERGY EFFICIENT, TOTALLY ENCLOSED, FAN COOLED

Minimum

Minimum	Percent

NEMA	Percent	Power

HP	RPM(Syn)	Frame	Efficiency	Factor

1	1200	145T	81	72

1-1/2	1200	182T	83	65

2	1200	184T	85	68

3	1200	213T	85	63

5	1200	215T	86	66

7-1/2	1200	254T	89	68

10	1200	256T	89	75

15	1200	284T	90	72

20	1200	286T	90	76

25	1200	324T	90	71

30	1200	326T	91	79

40	1200	364T	92	78

50	1200	365T	92	81

60	1200	404T	92	83

75	1200	405T	92	80

100	1200	444T	93	83

125	1200	445T	93	85

1	1800	143T	82	84

1-1/2	1800	145T	84	85

2	1800	145T	84	85

3	1800	182T	87	83

5	1800	184T	88	83

7-1/2	1800	213T	89	85

10	1800	215T	90	84

15	1800	254T	91	86

20	1800	256T	91	85

25	1800	284T	92	84

30	1800	286T	93	86

40	1800	324T	93	83

50	1800	326T	93	85

60	1800	364T	93	87

75	1800	365T	93	87

100	1800	405T	94	86

125	1800	444T	94	87

150	1800	445T	94	88

200	1800	447T	95	87

1-1/2	3600	143T	82	85

2	3600	145T	82	87

3	3600	182T	82	87

5	3600	184T	85	88

7-1/2	3600	213T	86	86

10	3600	215T	86	86

15	3600	254T	88	91

20	3600	256T	89	89

25	3600	284T	90	92

30	3600	286T	91	92

40	3600	324T	91	91

50	3600	326T	90	92

60	3600	364T	91	93

75	3600	365T	91	91

100	3600	405T	92	92

END OF SECTION