SECTION ENCLOSED CONTROLLERS. A. Section includes enclosed controllers rated 600 Vac and less, of the following types:

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1 SECTION ENCLOSED CONTROLLERS PART 1 - GENERAL 1.1 SUMMARY A. Section includes enclosed controllers rated 600 Vac and less, of the following types: 1. Across-the-line, manual and magnetic controllers. 2. Reduced-voltage controllers. 3. Multispeed controllers. 1.2 DEFINITIONS A. Motor Controller: A device that controls, protects, and energizes an electric motor, and where required, controls its speed or the torque or power delivered by it. 1.3 REFERENCES A. International Electrical Testing Association 1. NETA ATS: Acceptance Testing Specifications for Electric Power Distribution Equipment and Systems B. National Electrical Manufacturers Association 1. NEMA 250: Enclosures for Electrical Equipment (1000 volts maximum) 2. NEMA AB 1: Molded Case Circuit Breakers and Molded Case Switches 3. NEMA ICS 2: Industrial Control Devices, Controllers and Assemblies 4. NEMA KS 1: Enclosed and Miscellaneous Distribution Equipment Switches (600 Volts Maximum) 5. NEMA MGG 1: Motors and Generators (Including Rev.1) 1.4 SUBMITTALS A. Product Data: For each type of enclosed controller. Include dimensions and manufacturer's technical data on features, performance, electrical characteristics, ratings, and finishes. B. Shop Drawings: For each enclosed controller. 1. Include dimensioned plans, elevations, sections, and details, including required clearances and service space around equipment. Show tabulations of installed devices, equipment features, and ratings. Include the following: a. Each installed unit's type and details. b. Nameplate legends. c. Short-circuit current rating of integrated unit. SOUTHSIDE OCCUPATIONAL ACADEMY ENCLOSED CONTROLLERS

2 d. Listed and labeled for series rating of overcurrent protective devices in combination controllers by an NRTL acceptable to authorities having jurisdiction. e. Features, characteristics, ratings, and factory settings of individual overcurrent protective devices in combination controllers. 2. Wiring Diagrams: Power, signal, and control wiring. C. Qualification Data: For manufacturer. D. Field quality-control test reports. E. Operation and Maintenance Data: For enclosed controllers to include in emergency, operation, and maintenance manuals. In addition to items specified in Division 01 Sections "Closeout Procedures and Operation and Maintenance Data," include the following: 1. Routine maintenance requirements for enclosed controllers and all installed components. 2. Manufacturer's written instructions for testing and adjusting overcurrent protective devices. F. Load-Current and Overload-Relay Heater List: Compile after motors have been installed and arrange to demonstrate that selection of heaters suits actual motor nameplate full-load currents. G. Load-Current and List of Settings of Adjustable Overload Relays: Compile after motors have been installed and arrange to demonstrate that dip switch settings for motor running overload protection suit actual motor to be protected. 1.5 QUALITY ASSURANCE A. Manufacturer Qualifications: A qualified manufacturer. Maintain, within 50 miles of Project site, a service center capable of providing training, parts, and emergency maintenance and repairs. B. Installer s Qualifications: Firm with at least 5 years of successful installation experience on projects utilizing motor controllers similar to that required for this project. C. Source Limitations: Obtain enclosed controllers of a single type through one source from a single manufacturer. D. Electrical Components, Devices, and Accessories: Listed and labeled as defined in the City of Chicago Electrical Code, Article 100, by a testing agency acceptable to authorities having jurisdiction, and marked for intended use. E. Comply with the City of Chicago Electrical Code. F. Product Selection for Restricted Space: Drawings indicate maximum dimensions for enclosed controllers, minimum clearances between enclosed controllers, and for adjacent surfaces and other items. Comply with indicated maximum dimensions and clearances. SOUTHSIDE OCCUPATIONAL ACADEMY ENCLOSED CONTROLLERS

3 1.6 DELIVERY, STORAGE, AND HANDLING A. Store enclosed controllers indoors in clean, dry space with uniform temperature to prevent condensation. Protect enclosed controllers from exposure to dirt, fumes, water, corrosive substances, and physical damage. B. If stored in areas subject to weather, cover enclosed controllers to protect them from weather, dirt, dust, corrosive substances, and physical damage. Remove loose packing and flammable materials from inside controllers; install electric heating of sufficient wattage to prevent condensation. C. Deliver in factory shipping cartons. D. Handle motor controllers to avoid damage. 1.7 PROJECT CONDITIONS 1.8 COORDINATION A. Coordinate layout and installation of enclosed controllers with other construction including conduit, piping, equipment, and adjacent surfaces. Maintain required workspace clearances and required clearances for equipment access doors and panels. B. Coordinate size and location of concrete bases. Cast anchor-bolt inserts into bases. Concrete, reinforcement, and formwork requirements are specified in Division 03 Section "Cast-in-Place Concrete." C. Coordinate installation of roof curbs, equipment supports, and roof penetrations. These items are specified in Division 07 Section "Roof Accessories." D. Coordinate features of enclosed controllers and accessory devices with pilot devices and control circuits to which they connect. E. Coordinate features, accessories, and functions of each enclosed controller with ratings and characteristics of supply circuit, motor, required control sequence, and duty cycle of motor and load. 1.9 EXTRA MATERIALS A. Furnish extra materials described below that match products installed and that are packaged with protective covering for storage and identified with labels describing contents. 1. Spare Fuses: Furnish one spare for every five installed, but no fewer than one set of three of each type and rating. 2. Indicating Lights: Two of each type installed. SOUTHSIDE OCCUPATIONAL ACADEMY ENCLOSED CONTROLLERS

4 PART 2 - PRODUCTS 2.1 MANUFACTURERS A. Manufacturers: Subject to compliance with requirements, provide products by one of the following manufacturers: 1. Eaton Corporation; Cutler-Hammer Products. 2. General Electrical Company; GE Industrial Systems. 3. Square D. 2.2 ACROSS-THE-LINE ENCLOSED CONTROLLERS A. General: 1. Starters shall be manual type for motors 1/3 HP and smaller and magnetic type motors ½ HP and larger. 2. Contacts shall open each ungrounded connection to the motor. 3. Starter contacts shall be twin-break, silver-to-silver, renewable contacts with one set of contacts for each phase. B. Manual Controller: NEMA ICS 2, general purpose, Class A, with "quick-make, quick-break" toggle action, and marked to show whether unit is "OFF," "ON," or "TRIPPED." 1. Single phase motor starting switches (thermal switches) for fractional horse power motors. Single pole for 120 Volt, two pole for 208 Volt operation. 2. Trip-free, toggle operated with on-off-reset position clearly indicated with neon pilot light for run indication. 3. Thermal overload shall be melting alloy or bimetallic type element with heater rating clearly indicated. Ambient-compensated type with inverse-time-current characteristics and NEMA ICS 2, Class 20 tripping characteristics. Provide one overload for single pole switch and two overloads for two pole switch. Sensor shall match to nameplate, full-load current of specific motor to which they connect and shall have appropriate adjustment for duty cycle. 4. Where the motor is interlocked and controlled by another device, the motor starter shall be marked Hand-Off-Auto. C. Magnetic Controller: NEMA ICS 2, Class A, full voltage, nonreversing, across the line, unless otherwise indicated. 1. Control Circuit: 120 V; obtained from integral control power transformer with a control power transformer of sufficient capacity to operate connected pilot, indicating and control devices, plus 100 percent spare capacity. 2. Overload Relay: Ambient-compensated type with inverse-time-current characteristic and NEMA ICS 2, Class 20 tripping characteristic. Provide with heaters or sensors in each phase matched to nameplate full-load current of specific motor to which they connect and with appropriate adjustment for duty cycle. 3. Adjustable Overload Relay: Dip switch selectable for motor running overload protection with NEMA ICS 2, Class 20 tripping characteristic, and selected to protect motor against voltage and current unbalance and single phasing. Provide relay with Class II groundfault protection, with start and run delays to prevent nuisance trip on starting. SOUTHSIDE OCCUPATIONAL ACADEMY ENCLOSED CONTROLLERS

5 4. Pilot lights: a. Green light to indicate motor running. b. Red light to indicate motor off. D. Combination Magnetic Controller: Factory-assembled combination controller and disconnect switch. 1. Fusible Disconnecting Means: NEMA KS 1, heavy-duty, fusible switch with rejectiontype fuse clips rated for fuses. Select and size fuses to provide Type 2 protection according to IEC , as certified by an NRTL. 2. Nonfusible Disconnecting Means: NEMA KS 1, heavy-duty, nonfusible switch. 3. Circuit-Breaker Disconnecting Means: NEMA AB 1, motor-circuit protector with fieldadjustable, short-circuit trip coordinated with motor locked-rotor amperes. 2.3 COMBINATION 2-SPEED MAGNETIC MOTOR CONTROLLERS A. General: Match controller to motor type, application, and to number of speeds. The starter shall serve the purpose of starting a 2-speed motor at the pre-selected speed and to provide complete overload, overcurrent, and undervoltage protection at each speed. B. NEMA ICS 2, Class A, full voltage, nonreversing, across the line, unless otherwise indicated. 1. Control Circuit: 120 V; obtained from integral control power transformer with a control power transformer of sufficient capacity to operate connected pilot, indicating and control devices, plus 100 percent spare capacity. 2. Overload Relay: Ambient-compensated type with inverse-time-current characteristic and NEMA ICS 2, Class 20 tripping characteristic. Provide with heaters or sensors in each phase matched to nameplate full-load current of specific motor to which they connect and with appropriate adjustment for duty cycle. 3. Adjustable Overload Relay: Dip switch selectable for motor running overload protection with NEMA ICS 2, Class 20 tripping characteristic, and selected to protect motor against voltage and current unbalance and single phasing. Provide relay with Class II groundfault protection, with start and run delays to prevent nuisance trip on starting.pilot lights: a. Green light to indicate motor high speed. b. Amber light to indicate motor low speed. c. Red light to indicate motor off. d. The 2-speed starter shall be an assembly of two magnetic across-the-line starters, one for each motor speed, mechanically and electrically interlocked and wired for automatic control through a cover mounted control switch. Include single phase protection. e. Decelerating Relay: Provide selection of lower than current operating speed by push-button or pilot device as indicated with deceleration automatically timed through any intervening speeds. 2.4 REDUCED-VOLTAGE ENCLOSED CONTROLLERS A. Solid-State, Reduced-Voltage Controller: NEMA ICS 2, suitable for use with NEMA MG 1, Design B, polyphase, medium induction motors. SOUTHSIDE OCCUPATIONAL ACADEMY ENCLOSED CONTROLLERS

6 1. Adjustable acceleration rate control utilizing voltage or current ramp, and adjustable starting torque control with up to 500 percent current limitation for 20 seconds. 2. Surge suppressor in solid-state power circuits providing 3-phase protection against damage from supply voltage surges 10 percent or more above nominal line voltage. 3. LED indicators showing motor and control status, including the following conditions: a. Control power available. b. Controller on. c. Overload trip. d. Loss of phase. e. Shorted silicon-controlled rectifier. 4. Automatic voltage-reduction controls to reduce voltage when motor is running at light load. 5. Motor running contactor operating automatically when full voltage is applied to motor. 6. Shorting contactor: a. A microprocessor shall control the operation of the shorting contactor via an output relay. a. The shorting contactor shall close, shorting the thyristors after the b. Motor current is below 130% of motor FLA and voltage is below nominal voltage (indicating ramp complete), and open on a stop command to allow deceleration ramp. 7. Motor must be automatically protected from solid state component failure by one of the following means: a. Shunt trip coil to trip disconnect in the event of a controller fault condition including a shorted thyristor. b. Isolation contactor that opens when the motor is stopped or when the controller detects a fault condition including a shorted thyristor. 2.5 MULTISPEED ENCLOSED CONTROLLERS A. Multispeed Enclosed Controller: Match controller to motor type, application, and number of speeds; include the following accessories: 1. Compelling relay to ensure that motor will start only at low speed. 2. Accelerating relay to ensure properly timed acceleration through speeds lower than that selected. 3. Decelerating relay to ensure automatically timed deceleration through each speed. 2.6 ENCLOSURES A. Description: Flush- or surface-mounting cabinets as indicated. NEMA 250, Type 1, unless otherwise indicated to comply with environmental conditions at installed location. 1. Outdoor Locations: NEMA 250, Type 3R. 2. Kitchen Areas: NEMA 250, Type 4X, stainless steel. 3. Other Wet or Damp Indoor Locations: NEMA 250, Type Hazardous Areas Indicated on Drawings: NEMA 250, Type 7C. SOUTHSIDE OCCUPATIONAL ACADEMY ENCLOSED CONTROLLERS

7 2.7 ACCESSORIES A. Devices shall be factory installed in controller enclosure, unless otherwise indicated. B. Push-Button Stations and Pilot Lights: NEMA ICS 2, heavy-duty type. C. Hand-Off-Automatic selector switches: NEMA ICS 2, heavy-duty type. D. Other selector switches as required: NEMA ICS 2, heavy-duty type. E. Stop and Lockout Push-Button Station: Momentary-break, push-button station with a factoryapplied hasp arranged so padlock can be used to lock push button in depressed position with control circuit open. F. Control Relays: Auxiliary and adjustable time-delay relays. G. Elapsed Time Meters: Heavy duty with digital readout in hours. H. Phase-Failure and Undervoltage Relays: Solid-state sensing circuit with isolated output contacts for hard-wired connection. Provide adjustable undervoltage setting. 2.8 FACTORY FINISHES A. Finish: Manufacturer's standard paint applied to factory-assembled and -tested enclosed controllers before shipping. PART 3 - EXECUTION 3.1 EXAMINATION A. Examine areas and surfaces to receive enclosed controllers for compliance with requirements, installation tolerances, available clearances and other conditions affecting performance. 1. Proceed with installation only after unsatisfactory conditions have been corrected. 3.2 APPLICATIONS A. Select features of each enclosed controller to coordinate with ratings and characteristics of supply circuit and motor; required control sequence; duty cycle of motor, controller, and load; and configuration of pilot device and control circuit affecting controller functions. B. Select horsepower rating of controllers to suit motor controlled. C. Use fractional-horsepower manual controllers for single-phase motors, unless otherwise indicated. D. Push-Button Stations: In covers of magnetic controllers for manually started motors where indicated, start contact connected in parallel with sealing auxiliary contact for low-voltage protection. SOUTHSIDE OCCUPATIONAL ACADEMY ENCLOSED CONTROLLERS

8 E. Hand-Off-Automatic Selector Switches: In covers of manual and magnetic controllers of motors started and stopped by automatic controls or interlocks with other equipment. 3.3 INSTALLATION A. For control equipment at walls, bolt units to wall or mount on lightweight structural-steel channels bolted to wall. For controllers not at walls, provide freestanding racks. B. Enclosed Controller Fuses: Install fuses in each fusible switch. Comply with requirements in Division 26 Section "Fuses." 3.4 IDENTIFICATION A. Identify enclosed controller, components, and control wiring according to Division 26 Section "Identification for Electrical Systems." 3.5 CONTROL WIRING INSTALLATION A. Install wiring between enclosed controllers according to Division 26 Section "Conductors and Cables for Electrical Systems." B. Bundle, train, and support wiring in enclosures. C. Connect hand-off-automatic switch and other automatic-control devices where applicable. 1. Connect selector switches to bypass only manual- and automatic-control devices that have no safety functions when switch is in hand position. 2. Connect selector switches with enclosed controller circuit in both hand and automatic positions for safety-type control devices such as low- and high-pressure cutouts, hightemperature cutouts, and motor overload protectors. 3.6 CONNECTIONS A. Conduit installation requirements are specified in other Division 26 Sections. Drawings indicate general arrangement of conduit, fittings, and specialties. B. Ground equipment according to Division 26 Section "Grounding and Bonding for Electrical Systems." 3.7 DEMONSTRATION A. Training: Engage a factory-authorized service representative to demonstrate solid-state controllers and train Owner's maintenance personnel to adjust, operate and maintain enclosed controllers. Refer to Division 01 Section Demonstration and Training. 1. Conduct a minimum of 4 hours of training in operation and maintenance as specified in Division 01 Section "Closeout Procedures." Include training relating to equipment operation and maintenance procedures. 2. Schedule training with at least 7 days' advance notice. SOUTHSIDE OCCUPATIONAL ACADEMY ENCLOSED CONTROLLERS

9 3.8 CLEANING A. Remove paint splatters and other spots, dirt, and debris. Touch up scratches and mars of finish to match original finish. Clean devices internally, using methods and materials recommended by manufacturer. 3.9 CONTRACTOR STARTUP AND REPORTING A. Prepare for acceptance tests as follows: 1. Test insulation resistance for each enclosed controller element, bus, component, connecting supply, feeder, and control circuit. 2. Test continuity of each circuit. B. Manufacturer's Field Service: Engage a factory-authorized service representative to perform the following: 1. Assist in field testing of equipment including pretesting and adjusting of solid-state controllers. 2. Report results in writing. C. Perform the following field tests and inspections and prepare test reports: 1. Perform each electrical test and visual and mechanical inspection, as stated in NETA ATS, "Motor Control - Motor Starters." Certify compliance with test parameters. 2. Correct malfunctioning units on-site, where possible, and retest to demonstrate compliance; otherwise, replace with new units and retest. D. Pretesting: On completing installation of the system, perform the following preparations for tests: 1. Make insulation resistance tests of conducting parts of motor control components; and of connecting supply, feeder, and control circuits. For devices containing solid-state components, use test equipment and methods recommended by the manufacturer. 2. Make continuity tests of circuits. 3. Provide set of Contract Documents to test personnel. Include full updating on final system configuration and parameters where they supplement or differ from those indicated in original Contract Documents. 4. Provide manufacturer s instructions for installation and testing of motor control devices to test personnel. E. Visual and mechanical inspection: Include the following inspections and related work: 1. Motor-Control Device Ratings and Settings: Verify that ratings and settings as installed are appropriate for final loads and final arrangement and parameters. Recommend final protective-device ratings and settings where differences are found. Use accepted revised ratings or settings to make the final system adjustments. Prepare and submit load current and overload relay heater list. 2. Inspect for defects and physical damage, NRTL labeling, and nameplate compliance with current project drawings. SOUTHSIDE OCCUPATIONAL ACADEMY ENCLOSED CONTROLLERS

10 3. Exercise and perform operational tests of mechanical components and other devices in accordance with manufacturer s instructions. 4. Check tightness of electrical connections of devices with calibrated torque wrench. Use manufacturer s recommended torque values. 5. Clean devices using manufacturer s approved methods and materials. 6. Verify proper fuse types and ratings in fusible devices. F. Electrical Tests: Perform the following in accordance with manufacturer s instructions: 1. Insulation resistance test of motor control devices conducting parts to the extent permitted by the manufacturer s instructions. Insulation resistance less than 10 megohms is not acceptable. 2. Use primary current injection to check performance characteristics of motor-circuit protectors and for overload relays of controllers for motors 15 horsepower and larger. Trip characteristics not within manufacturer s published time-current tolerances are not acceptable. 3. Make adjustments for final settings of adjustable-trip devices. 4. Test auxiliary protective features such as loss of phase, phase unbalance and undervoltage to verify operation. 5. Check for improper voltages at terminals in controllers that have external control wiring when controller disconnect is opened. G. Correct deficiencies and retest motor control devices. Verify by the system tests that specified requirements are met. H. Set field-adjustable switches and circuit-breaker trip ranges. END OF SECTION SOUTHSIDE OCCUPATIONAL ACADEMY ENCLOSED CONTROLLERS