Cutler-Hammer Motor Control Assemblies I2-1 …

1 Cutler-Hammer Motor Control Assemblies I2-1. January 1999 Low-Voltage Motor Control Centers General Description General Description Introduction Cutler-Hammer currently produces two Motor Control center designs;. Freedom and Advantage . Each MCC type provides quality group Motor Control for a wide variety of applications. Freedom MCCs offer the best Motor Control for traditional electromechanical starter applica- tions. The Advantage Motor starter brings solid-state technology to the electromechanical Motor starter industry. Each MCC model utilizes the same rugged enclosure and plug-in cell design. Refer to Table V for feature high- lights of each MCC design. Layout Guide . Space Requirements Table Combination Starters, Series C Motor Circuit Protectors or Molded Case Circuit Breakers ..A. Combination Starters, Fusible Switch ..B. AF91 Adjustable Frequency Controller ..C. SV9000 Adjustable Frequency Controller.

2 D. AF95 Adjustable Frequency Controller .. E. Incoming Line and Feeder I. Circuit Breakers .. F. Incoming Line and Feeder Fusible Switches .. G. Lighting Panelboards ..H. Automatic Transfer Switches .. I. Dry-Type Distribution 2100 Series Motor Control Center Transformers .. J. Power Factor Correction Characteristics Page Characteristics Page Capacitors ..K Replacement Units .. I2-2 Unit Wrapper .. I2-9. Current Limiting Reactors .. L. UL Labeling .. I2-2 Terminal Blocks .. I2-9. TVSS (Clipper Power System) .. M. NEMA Wiring Classes .. I2-3 Unit Doors.. I2-10. DeviceNet Communications .. N. Structures .. I2-3 Additional Equipment .. I2-10. Earth Leakage Breakers .. O. Metering and Protection Wireways.. I2-4 Control and Load Equipment .. P Bus System .. I2-5 Terminations .. I2-11. Standard Structures and Starter Units .. I2-7 Incoming Terminations .. I2-11. Structure Options.. Q Feeder Tap Units .. I2-7 Solid-State Devices.

3 I2-12. Structure Modifications ..R Stab Assembly .. I2-8 Metering, IMPACC/PowerNet .. I2-13. Bus Modifications ..S Handle Mechanism.. I2-8 Additional Services .. I2-14. Main Lugs Only .. T Device Panel .. I2-9 Specifications .. I2-37. Control Power Transformer Layout Template.. I2-41. Data .. U. MCC Ratings and Highlights ..V. Overcurrent Device Selection Guide .. W. Starter Selection Guide ..X. I2-2. Motor Control Assemblies Cutler-Hammer Low-Voltage Motor Control Centers January 1999. General Description Features temperature and short circuit design MCC model UL Label test program as required by UL 845 Type of plug-in unit ensures a quality product that meets 65,000 AIC Ratings the latest safety codes. Required features Series C Circuit Breakers Circuit breaker or fuse rating Replacement MCC Units 3200A Maximum Horizontal Bus Schematic reference, if any In addition to fully assembled, free- Labyrinth Barrier System for Bus standing Motor Control center line- Motor data Pull Apart Latching Terminal ups, replacement MCC plug-in units Standard Five Star, Series 2100, Blocks are available for: Freedom Series 2100 and Advan- Unit Grounding Clip Westinghouse 11-300, built tage plug-in units with current Cut- from 1950 ler- hammer components wired to Front Only or Front and Rear Unit standard schematics can be obtained Mounting Westinghouse Type W, built out of stock from one of seven from 1965 regional Service Centers.

4 All other Solid-State Motor Control Westinghouse FIVE STAR, built units are to be ordered from the MCC. Description from 1975 assembly plant in Fayetteville, NC. Motor Control Centers (MCC) pro- Westinghouse SERIES 2100, built vide the best method for grouping NEMA Classifications since 1986. Motor Control , associated Control Class I Control Centers and distribution equipment. The Westinghouse Advantage, built These are essentially a mechanical Freedom and Advantage 2100 Series since 1991 grouping of combination Motor Control Centers are specially Cutler-Hammer 9800, built Control , feeder tap and/or other units designed to operate machinery, from 1956 arranged in a convenient assembly. industrial processes and commercial They include connections from the Cutler-Hammer F10, built from building systems. common horizontal power bus to the 1972. units. They do not include interwir- The MCC enclosure consists of a Cutler-Hammer Freedom, built ing or interlocking between units or strong and rigid steel channel frame- since 1988 to remotely mounted devices, nor do work assembled into standardized Cutler-Hammer Freedom Series they include Control system engi- vertical sections and bolted together 2100, built since 1995 neering.

5 Diagrams of the individual to form a complete shipping section units only are supplied. of up to 80-inch maximum, four A complete plug-in unit for adding to I structures each. Structures include an existing MCC includes the plug-in When master terminal blocks are horizontal and vertical bus, insula- unit, hinged door, isolating divider specified, a sketch showing general tion and isolation barriers, horizontal pan, and all necessary installation location of terminals is provided. and vertical isolated wiring troughs, hardware. Note: mounting hard- cable entrance areas and space ware for old Cutler-Hammer MCC is Class II Control Centers for inserting starter and Control sold separately. Since MCC UL 845 These are basically the same as equipment. standard was established in 1975, Class I, but designed to form a com- most standard replacement plug-in plete Control system. They include All Control units, removable or fixed the necessary electrical interlocking units will have UL labels.

6 Mounted, are assembled with cutler - and interwiring between units and hammer components with proven Ordering Information interlocking provisions to remotely safety, quality and reliability. All Replacement plug-in units should be mounted devices. A suitable diagram components are wired in accordance ordered by description indicating: illustrating operation of the Control with NEC and UL standards. Specifi- associated with the Motor Control cally designed bus stabs, insertion Old GO Number/Factory Order center will be provided. guides, handle mechanisms and Number safety interlocks are added to form Further Information a standardized plug-in unit which meets the highest safety standards. 2100 Series MCC Freedom Advantage Both Freedom and Advantage 2100 Renewal Parts Data RPD 8991 RPD 8991. Series MCCs may be applied on elec- Renewal Parts Price List RPPL 8991A RPPL 8991A. trical systems up to 600V, 50 Price List or 60 hertz having available fault Instructions and Installation Manual IB 8926-1 IB 8922-1.

7 Currents of up to 100,000A rms. Cutler-Hammer Product Specification Guide CSI-#16482 CSI-#16482. Enclosure designs include NEMA 1A. Gasketed, 2, 12 and 3R. An ongoing Cutler-Hammer Motor Control Assemblies I2-3. January 1999 Low-Voltage Motor Control Centers General Description NEMA Classifications, Continued When master terminal blocks are supplied, but no wiring external to blocks are standard for all Control specified, the terminal arrangement the unit will be furnished. All feeder wiring. and required wiring connections are circuit breaker or fusible disconnect Type C utilizes Type B units. Factory shown on the diagram. units are in this classification. wiring of required Control wiring and NEMA Types of Wiring Type B essentially duplicates Type A load wiring through sizes 1 and 2. Type A includes no terminal blocks. except that all Control wires termi- and Control wiring only size 3 and Combination linestarters are factory nate at blocks on the side or near the larger is extended from the unit ter- wired and assembled in the struc- bottom of each unit.

8 Load terminals minals to master terminal blocks ture in the most efficient arrange- are all conveniently located adjacent located at the top or bottom of each ment. Auxiliary devices can be to the Control terminal blocks on vertical compartment. size 1s only. Plug-in type terminal I. Structure hinges are provided on all unit com- Construction partments. Vertical wireways, top horizontal wireways and bottom The standard vertical structure is horizontal wireways are standard. 90 inches high and 20 inches wide. Front mounted only structures can The unit pan forms the top barrier of be either 16 inches or 21 inches each unit space. In conjunction with deep. Back-to-back unit mounting the unit wrapper, this provides isola- is 21 inches deep. tion between adjacent units and wireways. The guide rails are an The structure framework is made integral part of this pan and provide of 12-gauge formed steel channels.

9 Precise alignment of the unit stabs The subframes for the front and rear on the vertical bus. of each structure are welded. These subframes are then bolted to longi- Standard Structure Arrangements tudinal members to form the Standard structural height is 90. complete frame which is rigid and inches with 9-inch horizontal wire- self-supporting. Side, back and roof ways available at top and bottom covers of 14-gauge steel are mounted with screw fasteners for for wiring. The balance of vertical compartments, 72 inches, is avail- I. quick and easy removal when able for mounting of Control units. desired. All doors are 14-gauge steel This space can provide up to twelve with a 1/2-inch flange to provide a 6-inch high (X spaces) or any com- rigid, secure closure for all openings. bination thereof. Doors mounted on removable pin 16 In. 21 In. 21 In. Note: In the rear of back-to-back structures, the top horizontal wire- Vertical Wireway way is 15 inches high and the bot- tom wireway is 9 inches.

10 This means 90 In. that back-to-back structures have only 66 inches (11X) of usable space Vertical in the rear. Compartment Special Structures In addition to the standard 20-inch 20 In. 20 In. 20 In. wide structure, extra wide structures Figure 1 Figure 2 Figure 3 are available in 4-inch increments up 12X space 12X space 23X space 1X = 6 inches 72-inch space 72-inch space 72-inch space front to 40 inches wide. These structures front mounted only front mounted only 66-inch space rear can be supplied with or without back-to-back 4-5/8-inch wide vertical wireways. They are used for mounting transfer switches, PLC hardware and other special equipment. I2-4. Motor Control Assemblies Cutler-Hammer Low-Voltage Motor Control Centers January 1999. General Description I. Structure, Continued Indoor enclosures comply with NEC. Reduced height structures, in incre- UL 845's Two Meter Rule when ments of 6 inches (1X), are available the bottom of the MCC is at the for applications with limited access.