Download section 15170-motors - DeCA Facilities Website

[SUBMITTAL INFORMATION]
IF THE HIDDEN GUIDE SPECIFICATION CONVENTIONS DO NOT APPEAR PRECEEDING THIS
NOTE, TURN THEM ON AS FOLLOWS.
FOR MICROSOFT WORD 2000 and 2003, CLICK ON SHOW/HIDE ICON IN MENU BAR OR CHOOSE
TOOLS IN MENU BAR. THEN CLICK OPTIONS, VIEW TAB, UNDER FORMATTING MARKS, CHECK
HIDDEN TEXT.
FOR MICROSOFT WORD 2007, CLICK ON MICROSOFT OFFICE ICON LOCATED IN UPPER LEFT
CORNER OF MENU BAR. CLICK ON WORD OPTIONS AT BOTTOM OF DROP DOWN. THEN CLICK
ON DISPLAY. CHECK THE HIDDEN TEXT BOX.
FOR MICROSOFT OFFICE 2010, CLICK ON FILE BUTTON LOCATED IN UPPER LEFT CORNER OF
MENU BAR. IN THE DROP DOWN, CLICK ON OPTIONS, AND A WORD OPTIONS BOX WILL
APPEAR. CLICK ON DISPLAY. CHECK THE HIDDEN TEXT BOX.
THE GUIDE SPECIFICATION CONVENTIONS SHOULD NOW BE VISIBLE IN THE DOCUMENT.
(Delete this note before printing.)
SECTION 23 05 13
COMMON MOTOR REQUIREMENTS FOR HVAC EQUIPMENT
(Edited from DeCA June 2016 Design Criteria)
PART 1 - GENERAL
1.1
SUMMARY
A.
Section Includes:
1.
2.
B.
Related Sections:
1.
2.
3.
4.
1.2
Single phase electric motors, field and factory installed.
Three phase electric motors, field and factory installed.
Division 01 Section Mechanical, Refrigeration, Food Service Equipment and Electrical
Coordination.
Division 01 Section Quality Control.
Division 01 Section Closeout Procedures.
Division 26 Electrical.
QUALITY CONTROL
A.
The following publications form a part of this Specification to the extent they are applicable.
1.
2.
3.
4.
5.
Division 01 Section Quality Control.
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.
<Insert project name and location>
<Insert Submittal Date>
COMMON MOTOR REQUIREMENTS FOR HVAC EQUIPMENT
23 05 13 - 1
[SUBMITTAL INFORMATION]
6.
1.3
NFPA 70 - National Electrical Code.
SUBMITTALS
A.
Product Data for Field-Installed Motors: For each type and size of motor, provide nameplate data
and ratings; shipping, installed, and operating weights; mounting arrangements; size, type, and
location of winding terminations; conduit entry and ground lug locations; and information on coatings
or finishes.
B.
Shop Drawings for Field-Installed Motors: Dimensioned Plans, Elevations, Sections, and Details,
including required clearances and service space around equipment. Include the following:
1.
2.
3.
Each installed unit's type and details.
Nameplate legends.
Diagrams of power and control wiring. Provide schematic wiring diagram for each type of
motor and for each control scheme.
C.
Field quality-control test reports.
D.
Operation and Maintenance Data: For field-installed motors to be included in operation and
maintenance manuals.
1.4
QUALIFICATIONS
A.
1.5
Manufacturer: Company specializing in manufacture of electric motors for the intended use, and
their accessories, with minimum three years documented product development, testing, and
manufacturing experience.
REGULATORY REQUIREMENTS
A.
Conform to all applicable electrical and energy codes, NFPA 70.
B.
Products Requiring Electrical Connection: Listed and classified by Underwriters' Laboratories, Inc.
as suitable for the purpose specified and indicated.
1.6
DELIVERY, STORAGE, AND HANDLING
A.
Division 01 Section Environmental Management.
B.
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.
<Insert project name and location>
<Insert Submittal Date>
COMMON MOTOR REQUIREMENTS FOR HVAC EQUIPMENT
23 05 13 - 2
[SUBMITTAL INFORMATION]
PART 2 - PRODUCTS
2.1
GENERAL CONSTRUCTION AND REQUIREMENTS
A.
Motors Less Than 250 Watts, for Intermittent Service: Equipment manufacturer's standard and
need not conform to these Specifications.
B.
Refer to Schedules on Contract Drawings for required electrical characteristics.
C.
Type:
1.
2.
3.
4.
Open drip-proof except where specifically noted otherwise.
Motors: Design for continuous operation in 104 deg F 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 143T and larger: Energy Efficient Type.
D.
Explosion-Proof Motors: UL approved and labeled for hazard classification, with over temperature
protection.
E.
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.
F.
Wiring Terminations:
1.
2.
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.
G.
Motors shall be quiet running, free of vibration and magnetic hum.
H.
All motors shall be designed for the operating conditions and service requirements of the intended
service.
I.
All motors shall be designated "NEMA Premium Motors".
2.2
SINGLE PHASE POWER - SPLIT PHASE MOTORS
A.
Starting Torque: Less than 150 percent of full load torque.
B.
Starting Current: Up to seven times full load current.
C.
Breakdown Torque: Approximately 200 percent of full load torque.
D.
Drip-proof Enclosure: Class A (122 deg F temperature rise) insulation, NEMA Service Factor,
prelubricated sleeve or ball bearings.
E.
Enclosed Motors: Class A (122deg F temperature rise) insulation, 1.0 Service Factor, prelubricated
ball bearings.
<Insert project name and location>
<Insert Submittal Date>
COMMON MOTOR REQUIREMENTS FOR HVAC EQUIPMENT
23 05 13 - 3
[SUBMITTAL INFORMATION]
2.3
SINGLE PHASE POWER - PERMANENT-SPLIT CAPACITOR MOTORS
A.
Starting Torque: Exceeding one fourth of full load torque.
B.
Starting Current: Up to six times full load current.
C.
Multiple Speed: Through tapped windings.
D.
Open Drip-proof or Enclosed Air Over Enclosure: Class A (122 deg F temperature rise) insulation,
minimum 1.0 Service Factor, prelubricated sleeve or ball bearings, automatic reset overload
protector.
2.4
SINGLE PHASE POWER - CAPACITOR START MOTORS
A.
Starting Torque: Three times full load torque.
B.
Starting Current: Less than five times full load current.
C.
Pull-up Torque: Up to 350 percent of full load torque.
D.
Breakdown Torque: Approximately 250 percent of full load torque.
E.
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.
F.
Drip-proof Enclosure: Class A (122 deg F temperature rise) insulation, NEMA Service Factor,
prelubricated sleeve or ball bearings.
G.
Enclosed Motors: Class A (122 deg F temperature rise) insulation, 1.0 Service Factor, prelubricated
ball bearings.
2.5
THREE PHASE POWER - SQUIRREL CAGE MOTORS
A.
Starting Torque: Between 1 and 1-1/2 times full load torque.
B.
Starting Current: Six times full load current.
C.
Power Output, Locked Rotor Torque, Breakdown or Pull Out Torque: NEMA Design B
characteristics.
D.
Design, Construction, Testing, and Performance: Conform to NEMA MG 1 for Design B motors.
E.
Insulation System: NEMA Class B or better.
F.
Testing Procedure: In accordance with IEEE 112. Load test motors to determine free from electrical
or mechanical defects in compliance with performance data.
G.
Motor Frames: NEMA Standard T-Frames of steel, aluminum, or cast iron with end brackets of cast
iron or aluminum with steel inserts.
<Insert project name and location>
<Insert Submittal Date>
COMMON MOTOR REQUIREMENTS FOR HVAC EQUIPMENT
23 05 13 - 4
[SUBMITTAL INFORMATION]
H.
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
Division 26 Section Motor-Control Centers.
I.
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.
J.
Sound Power Levels: To NEMA MG 1.
K.
Part Winding Start: Where indicated, 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.
L.
Weatherproof Epoxy Sealed Motors: Epoxy seal windings using vacuum and pressure windings with
rotor and starter surfaces protected with epoxy enamel; bearings double shielded with waterproof
non-washing grease.
M.
Nominal Efficiency: As scheduled at full load and rated voltage when tested in accordance with
IEEE 112.
N.
Nominal Power Factor: As scheduled at full load and rated voltage when tested in accordance with
IEEE 112.
2.6
POLYPHASE MOTORS WITH ADDITIONAL REQUIREMENTS
A.
Motors Used with Reduced-Inrush Controllers: Match wiring connection requirements for controller
with required motor leads. Provide terminals in motor terminal box, suited to control method.
B.
Motors Used with Variable Frequency Controllers: Ratings, characteristics, and features
coordinated with and approved by controller manufacturer.
1.
2.
3.
4.
C.
Rugged-Duty Motors: Totally enclosed, with 1.25 minimum service factor, greased bearings,
integral condensate drains, and capped relief vents. Windings insulated with nonhygroscopic
material.
1.
D.
Designed with critical vibration frequencies outside operating range of controller output.
Temperature Rise: Matched to rating for Class B insulation.
Insulation: Class H.
Thermal Protection: Comply with NEMA MG 1 requirements for thermally protected motors.
Finish: Chemical-resistant paint over corrosion-resistant primer.
Source Quality Control: Perform the following tests on each motor according to NEMA MG 1:
1.
2.
3.
4.
Measure winding resistance.
Read no-load current and speed at rated voltage and frequency.
Measure locked rotor current at rated frequency.
Perform high-potential test.
<Insert project name and location>
<Insert Submittal Date>
COMMON MOTOR REQUIREMENTS FOR HVAC EQUIPMENT
23 05 13 - 5
[SUBMITTAL INFORMATION]
PART 3 - EXECUTION
3.1
APPLICATION
A.
Single Phase Motors for Shaft Mounted Fans Centrifugal Pumps: Split phase type.
B.
Single Phase Motors for Shaft Mounted Fans or Blowers: Permanent split capacitor type.
C.
Single Phase Motors for Fans, Pumps, Blowers, Air Compressors: Capacitor start type.
D.
Single Phase Motors for Fans, Blowers, Pumps: Capacitor start, capacitor run type.
E.
Motors Located in Exterior Locations, Wet Air Streams Downstream Draw Thru Cooling Coils, Air
Cooled Condensers: Totally enclosed type.
3.2
3.3
3.4
INSTALLATION
A.
Install in accordance with manufacturer's instructions.
B.
Install securely on firm foundation. Mount ball bearing motors with shaft in any position.
C.
Check line voltage and phase and ensure agreement with nameplate.
NEMA OPEN MOTOR SERVICE FACTOR SCHEDULE
HP
3600 RPM
1800 RPM
1200 RPM
900 RPM
1/6-1/3
1/2
3/4
1
1.5-150
1.35
1.25
1.25
1.25
1.15
1.35
1.25
1.25
1.15
1.15
1.35
1.25
1.15
1.15
1.15
1.35
1.15
1.15
1.15
1.15
PERFORMANCE SCHEDULE: THREE PHASE - ENERGY EFFICIENT, OPEN DRIP-PROOF
Minimum
Percent
Power
Factor
HP
RPM(Syn)
NEMA
Frame
Minimum
Percent
Efficiency
1 & Less
1-1/2
2
1800
1800
1800
143T
145T
145T
85.4
86.5
86.5
84
85
85
3
5
7-1/2
1800
1800
1800
182T
184T
213T
89.5
89.5
91.0
86
87
86
10
1800
215T
91.7
85
<Insert project name and location>
<Insert Submittal Date>
COMMON MOTOR REQUIREMENTS FOR HVAC EQUIPMENT
23 05 13 - 6
[SUBMITTAL INFORMATION]
3.5
15
20
1800
1800
256T
256T
93.0
93.6
86
86
25
30
1800
1800
284T
286T
94.1
94.1
86
88
PERFORMANCE SCHEDULE: THREE PHASE-ENERGY EFFICIENT, TOTALLY ENCLOSED,
FAN COOLED
Minimum
Percent
Power
Factor
HP
RPM(Syn)
NEMA
Frame
Minimum
Percent
Efficiency
1 & Less
1-1/2
2
1800
1800
1800
143T
145T
145T
85.5
86.5
86.5
84
85
85
3
5
7-1/2
1800
1800
1800
182T
184T
213T
89.5
89.5
91.7
83
83
85
10
15
20
25
30
1800
1800
1800
1800
1800
215T
256T
256T
284T
286T
91.7
92.4
93.0
93.6
93.6
84
86
86
86
88
END OF SECTION
<Insert project name and location>
<Insert Submittal Date>
COMMON MOTOR REQUIREMENTS FOR HVAC EQUIPMENT
23 05 13 - 7