26 29 13 - Contactors and Motor Starting Equipment.pdf

26 29 13 – CONTACTORS AND MOTOR STARTING EQUIPMENT

Herbert, Rowland & Grubic, Inc. 26 29 13-1 005153.0436

SECTION 26 29 13 - CONTACTORS AND MOTOR STARTING EQUIPMENT

PART 1 - GENERAL

1.1 SECTION INCLUDES

A. Manual motor starters.

B. Motor starters.

C. Magnetic contactors.

1.2 RELATED SECTIONS

A. Division 26.

1.3 REFERENCES

A. UL listing is required for all factory-fabricated assemblies. Individual component listing is also required.

B. Size equipment per NEMA and UL standards to match motor or equipment controlled.

C. The following specifications and standards, except as hereinafter modified, are incorporated herein by reference and form a part of this specification to the extent indicated by the references thereto. The issue in effect at time of construction shall be applicable. In text, such specifications and standards are referred to by basic designation only:

1. National Electric Code (NEC).

2. Underwriters Laboratories, Inc. (UL) - UL-508.

3. National Electrical Manufacturers Association (NEMA):

a. NEMA-1C-1.

b. NEMA AB-1 - Molded Case Circuit Breakers.

4. American National Standards Institute (ANSI).

5. J.I.C. Standards for Industrial Control.

1.4 SUBMITTALS

A. Submittals shall be made in accordance with Section 26 05 00 – Electrical-General.

B. Shop drawings shall be submitted for all starters and contactors. The submittal shall contain all the information needed to prove conformance with these specifications.

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C. Submit elementaries and block diagrams for systems of relays and/or contactors.

D. Samples shall be submitted as may be requested by the Engineer.

1.5 QUALITY ASSURANCE

A. Perform Work in accordance with NECA Standard of Installation.

1.6 QUALIFICATIONS

A. Manufacturer - Company specializing in manufacturing the products specified in this section with minimum three years’ experience.

1.7 REGULATORY REQUIREMENTS

A. Conform to requirements of NFPA 70.

B. Furnish products listed and classified by Underwriters Laboratories, Inc. as suitable for purpose specified and indicated.

PART 2 - PRODUCTS

2.1 GENERAL

A. Manufacturers:

1. Schneider Electric (Square D).

2. Eaton (Cutler-Hammer).

3. Or Equal.

B. All equipment furnished shall be of one approved manufacturer where possible. Motor starters for installation in motor control centers shall be manufactured by the MCC manufacturer.

C. For control panels with motors less than 1/2 HP, starters may be IEC rated motor protective switches. All other starters shall be NEMA rated starters.

D. Construction:

1. Parts easily removable when subject to wear, arcing damage, or electrical failure.

2. Enclosures - Cold rolled, formed seam-welded steel or cast aluminum with suitable legend plates and NEMA enclosures as per Section 26 27 16 - Control

Panels and Enclosures.

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3. Auxiliary Contacts - Rated as required by interlocking and/or automatic control systems as indicated in these Specifications and/or on the Contract

Drawings. Minimum 2 NO and 2 NC auxiliary contacts required.

2.2 MANUAL STARTERS (SM, SMXP)

A. General:

1. Contact Mechanism - Quick make, quick break toggle action.

2. Contactors - Silver alloy.

3. Enclosures - Adequately sized to contain the starter and all accessories and/or modification. NEMA classification to meet requirements of Section 26 27 16 –

Control Panels and Enclosures.

4. Overload Protection - Thermal overloads in each phase leg or one for each motor winding. Use Type A for fractional horsepower and Type B for integral horsepower applications.

B. Fractional HP Type:

1. Two-pole (unless shown or specified otherwise).

2. Toggle operated (unless shown or specified otherwise).

3. Full voltage.

4. Shall be non-reversing, reversing or two-speed as shown or specified.

5. Thermal overload device for each phase or motor winding.

6. Lock-off provisions and neon pilot light.

7. Selector switch as required, labeled for function performed.

C. Integral HP Type:

1. Two- or three-pole polyphase.

2. Thermal overload device for each phase.

3. Full voltage, non-reversing, reversing or two-speed as shown or specified.

4. Pushbutton operated with handle guard and lock-off.

5. Neon pilot light(s).

6. Auxiliary contacts as required.

7. Low voltage protection to trip unit on power outage when shown or specified.

D. Manufacturers:

1. Square D.

2. Eaton.

3. Or Equal.

2.3 MAGNETIC STARTERS

A. General:

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1. Size per NEMA and UL standard to match motor controlled. Exceptions: NEMA

Size 1 minimum (except NEMA Size 0 may be used for ventilation equipment 2 HP and less and in a separate H&V control panel) or as shown otherwise.

2. Starter coil voltage shall be 120 VAC unless noted otherwise.

3. Provide auxiliary contacts as required.

4. Provide with melting allow thermal overloads for 1-phase HP motors

5. For all motors 3-phase motors, provide motor management relay for motor monitoring, control, and protection. Unit shall be configured for Ethernet

Modbus TCP protocol communications with the plant SCADA system without the use of external gateways or additional software drivers. Unit shall be Schneider

Electric TeSys T or equal.

B. Full Voltage Non-Reversing Starting (FVNR):

1. Across-the-line type, rated 600 volts maximum.

2. Equipped with double break silver alloy contacts. (Single break shall be supplied on Size 8.)

3. Straight-through wiring.

4. Coils - Of molded construction through NEMA Size 7. Coils on Size 8 starters shall be form wound, taped, varnished and baked. Replaceable from the front without removing the starter from the panel.

5. Suitable for the addition of at least four auxiliary contacts.

C. Full Voltage Reversing Starting (FVR):

1. Across-the-line type, rated 600 volts maximum.

2. Equipped with double break silver alloy contacts. (Single break shall be supplied on Size 8.)

3. Straight-through wiring.

4. Coils - Of molded construction through NEMA Size 7. Coils on Size 8 starters shall be form wound, taped, varnished and baked. Replaceable from the front without removing the starter from the panel.

5. Suitable for the addition of at least four auxiliary contacts.

6. Mechanical interlock to prevent the operation of both devices at the same time.

2.4 MAGNETIC CONTACTORS

A. General:

1. Power and lighting contactors of the voltage, current rating, and number of poles as indicated on the Contract Drawings.

2. Continuously rated for all types of ballast and tungsten lighting, resistive and motor loads.

3. Totally enclosed, double break, silver-cadmium-oxide power type.

4. Auxiliary arcing contacts are not acceptable.

Herbert, Rowland & Grubic, Inc. 26 29 13-5 005153.0436

5. Auxiliary contacts and control circuit fusing as indicated on the Contract Drawings.

6. Industrial duty rated for 600-volt operation.

B. Electrically-Held Contactor Coils - Continuously rated and encapsulated.

C. Mechanically-Held Contactors - Coil-clearing contacts supplied so that the contactor coil shall be energized only during the instance of operation. Both the latching and unlatching coils shall be encapsulated.

2.5 RELAYS (0-25 AMPS)

A. See Section 26 09 16 - Auxiliary Controls and Relays.

PART 3 - EXECUTION

3.1 GENERAL

A. Install according to the requirements of the National Electric Code and as shown or noted on the Contact Documents.

B. Mount all contactors in an enclosure as individual units or in a control panel as part of a control system.

C. Enclosures and control panels to comply with Section 26 27 16 - Control Panels and

Enclosures.

D. Provide nameplates and tagging in accordance with Section 26 05 53 - Electrical System

Identification.

3.2 INDIVIDUAL RELAY OR CONTACTOR ENCLOSURES

A. Wall mount unless noted or shown otherwise.

B. Mounting Height - Approximately 60 inches to enclosure top from finished floor.

C. NEMA enclosure for area of mounting, per Section 26 27 16 - Control Panels and

Enclosures.

3.3 ENCLOSED STARTER MOUNTING

A. Height - Per Section 26 27 16 - Control Panels and Enclosures.

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B. Methods and Material - Per Section 26 05 29 – Electrical Supports, Anchors and Fasteners and manufacturer’s requirements.

END OF SECTION