SECTION 16482

MOTOR CONTROL CENTER

PART	GENERAL

SECTION INCLUDES

Motor control centers.

RELATED SECTIONS

Section 03300 - Concrete: Housekeeping pads.

Section 16195 - Electrical Identification: Engraved nameplates.

REFERENCES

NFPA 70 - National Electrical Code.

UL 198C - High-Interrupting Capacity Fuses; Current Limiting Type.

UL 198E - Class R Fuses.

NEMA AB 1 - Molded Case Circuit Breakers.

NEMA ICS 2 - Industrial Control Devices, Controllers, and Assemblies.

NEMA ICS 2.3 - Instructions for the Handling, Installation, Operation, and Maintenance of Motor Control Centers.

SUBMITTALS

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

Shop Drawings: Include front and side views of enclosures with overall dimensions shown; conduit entrance locations and requirements; nameplate legends; size and number of bus bars per phase, [neutral,] and ground; electrical characteristics including voltage, frame size and trip ratings, withstand ratings, and time/current curves of all equipment and components.

Test Reports: Indicate field test and inspection procedures and test results.

Manufacturer's Installation Instructions: Indicate application conditions and limitations of use stipulated by Product testing agency specified under Regulatory Requirements. Include instructions for storage, handling, protection, examination, preparation, installation, and starting of Product.

OPERATION AND MAINTENANCE DATA

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

Maintenance Data: Include spare parts data listing; source and current prices of replacement parts and supplies; and recommended maintenance procedures and intervals.

QUALITY ASSURANCE

Perform Work in accordance with NEMA ICS 2.3.

Maintain [one copy] [[____] copies] of [each] document on site.

QUALIFICATIONS

Manufacturer: Company specializing in manufacturing the Products specified in this section with minimum [three] [_________] years [documented] experience.

REGULATORY REQUIREMENTS

Conform to requirements of NFPA 70.

Furnish products listed and classified by [Underwriters Laboratories, Inc.] [testing firm acceptable to authority having jurisdiction] as suitable for purpose specified and indicated.

DELIVERY, STORAGE, AND HANDLING

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

Deliver in [60] [____] inch ([1.2] [____] m) maximum width shipping splits, individually wrapped for protection, and mounted on shipping skids.

Store in a clean, dry space. Maintain factory wrapping or provide an additional heavy canvas or heavy plastic cover to protect units from dirt, water, construction debris, and traffic.

Handle in accordance with NEMA ICS 2.3. Lift only with lugs provided for the purpose. Handle carefully to avoid damage to motor control center components, enclosure, and finish.

ENVIRONMENTAL REQUIREMENTS

Conform to NEMA ICS 2 service conditions during and after installation of motor control centers.

FIELD MEASUREMENTS

Verify that field measurements are as [indicated [on shop drawings].] [instructed by manufacturer.]

EXTRA MATERIALS

Furnish under provisions of Section [01700.] [_______.]

Provide [two] [____] of each size and type fuse installed.

PART	PRODUCTS

MANUFACTURERS

[__________________________________] Model [_________].

[__________________________________] Model [_________].

[__________________________________] Model [_________].

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

MOTOR CONTROL CENTER

Motor Control Centers: NEMA ICS 2, Class [I] [II], Type [A.] [B.] [C.].

Main Overcurrent Protection: [Molded case circuit breaker.] [Fusible switch.]

Feeder Tap Units: [Molded case thermal-magnetic circuit breakers.] [Fusible switches.]

Voltage Rating: [480] [120/208] [________] volts, three phase, [three] [four] wire, 60 Hertz.

Horizontal Bus: [Copper] [Aluminum], with a continuous current rating of [600] [____] amperes. Include copper ground bus entire length of control center.

Vertical Bus: [Copper.] [Aluminum.]

Integrated Equipment Short Circuit Rating: [________] amperes rms symmetrical at [480] [____] volts.

Configuration: [Units front mounting only, accessible from the [front only.] [front and rear.]] [Units front and rear mounting.]

Enclosure: NEMA ICS 6, Type [1.] [2.] [3R, non-walk-in.] [3R, walk-in.] [12.]

Finish: [Manufacturer's standard gray enamel.] [________.]

AUTOMATIC CONTROLLERS

Magnetic Motor Controllers: NEMA ICS 2, AC general-purpose Class A magetic controller for induction motors rated in horsepower.

Reversing Controllers: Include electrical interlock [and integral time delay transition] between FORWARD and REVERSE rotation.

Two Speed Controllers: Include integral time delay transition between FAST and SLOW speeds.

Coil operating voltage: [120] [480] [____] volts, [60 Hertz.] [[____] Hertz.] [DC.]

Overload Relay: NEMA ICS; [bimetal.] [melting alloy.]

PRODUCT OPTIONS AND FEATURES

Auxiliary Contacts: NEMA ICS 2, [2] [____] each [normally [open] [closed]] [field convertible] contacts in addition to seal-in contact.

Cover Mounted Pilot Devices: NEMA ICS 2, [standard] [heavy] duty [oiltight] type.

Pilot Device Contacts: NEMA ICS 2, Form Z, rated [A150.] [____.]

Pushbuttons: [Unguarded] [Recessed] [Shrouded] [Shielded] [Covered] [Lockable] type.

Indicating Lights: [Transformer] [Resistor], [incandescent] [LED] [neon] type.

Selector Switches: Rotary type.

Relays: NEMA ICS 2, [________].

Control Power Transformers: [120] [____] volt secondary, [[____] va minimum, in each motor starter.] [as scheduled.] Provide fused [primary and] secondary, and bond unfused leg of secondary to enclosure.

DISCONNECTS

Combination Controllers: Combine motor controllers with [thermal magnetic circuit breaker] [motor circuit protector] [non-fusible switch] [fusible switch] disconnect in common enclosure. Provide means for locking disconnect handle, and means for defeating cover interlock.

Thermal-Magnetic Circuit Breakers: NEMA AB 1, with integral thermal and instantaneous magnetic trip in each pole.

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

Motor Circuit Protector: NEMA AB 1, circuit breakers with integral instantaneous magnetic trip in each pole.

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

Nonfusible Switch Assemblies: NEMA KS 1, enclosed knife switch with externally operable handle.

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

Fusible Switch Assemblies: NEMA KS 1,enclosed knife switch with externally operable handle. Fuse clips: Designed to accommodate Class [R] [J] fuses.

FUSES

Manufacturers:

[______________________________] Model [_________].

[______________________________] Model [_________].

[______________________________] Model [_________].

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

Description: [Dual element,] current limiting, [time delay,] one-time fuse, [250] [600] volt, [UL 198E, Class [RK 1.] [RK 5.]] [UL 198C, Class [J.]]

Interrupting Rating: 200,000 rms amperes.

PART	EXECUTION

EXAMINATION

Verify conditions under the provisions of Section [01039.] [________.]

Verify that surface is suitable for motor control center installation.

PREPARATION

Provide housekeeping pads under the provisions of Section [03300.] [________.]

INSTALLATION

Install motor control centers in accordance with manufacturer's instructions.

Tighten accessible bus connections and mechanical fasteners after placing motor control center.

Install fuses in fusible switches.

Select and install heater elements in motor starters to match installed motor characteristics.

Provide engraved plastic nameplates under the provisions of Section 16195.

Motor Data: Provide neatly typed label inside each motor starter door identifying motor served, nameplate horsepower, full load amperes, code letter, service factor, and voltage/phase rating.

FIELD QUALITY CONTROL

Field [inspection and] testing will be performed under provisions of Section [01400.] [________.]

Inspect and test motor control center and each controller to NEMA ICS 2.

END OF SECTION