Catalogs > Industrial Controls Catalog > Motor Control Centers > CENTERLINE Medium Voltage Motor Control Centers
CENTERLINE Medium Voltage Motor Control Centers
Description of Features
The Allen-Bradley medium voltage motor controller offers:
• Three isolated compartments:
- Power bus
- Low voltage
- Power cell
• Large swing-out low voltage panel painted white for high visibility
• Test circuit and plug for remote control power supply
• External operating handle to operate the isolation switch
• Bolted power cell door(s)
• CENTERLINE horizontal power bus with removable cover plates for accessibility
• 1/4 x 2 in. continuous copper ground bus
• Line, load, and control wire conduit openings with removable cover
plates at the top or bottom of the structure
• Base mounting sill channels with mounting holes and removable
lifting means
• Hybrid epoxy powder paint finish
Controller Standard Features
• NEMA Class E2 design
• Removable lifting angles or brackets
• Non-removable sill channels
• Removable backplates
• Top or bottom plates to accommodate cable entry/exit
• Tin-plated copper horizontal power bus located in an isolated compartment
• 1/4 x 2 in. continuous bare copper ground bus
• Main non-load break isolation switch with visible blades and shutter mechanism, and operating handle
• Mechanical and electrical interlocks between isolation switch, vacuum contactor, and medium voltage door
• Vacuum contactor(s)
• Three current-limiting power fuses for NEMA Class E2 operation
• Three current transformers
• Control circuit transformer with primary and secondary fuses
• Low voltage control panel
• Space for necessary auxiliary control and metering devices
• Polycarbonate viewing window in power cell door
• IntelliVAC™ control module for each vacuum contactor, mounted in low voltage panel, with advanced features:
– Universal input voltage (110…240V AC, 50/60 Hz or 100…250V DC)
– Selectable vacuum contactor drop-out time and consistent pickup time
– Altitude compensation
– Power loss ride-through (TDUV) – may require additional hardware (external capacitor)
– Anti-kiss and anti-plugging protection
– Delayed motor re-start and temporary motor jog function
– One device is suitable for all contactors and control schemes
Input Voltage
• 2400V, 3300V, 4200V, 6600V or 6900V AC (+5/-10%)
• 3-phase 50/60 Hz (± 3%)
Ambient Temperature
• 0…40 °C (32…104 °F) with relative humidity of up to 95% (non-condensing)
Enclosure Types
• NEMA Type 1 – General purpose (IP10)
• NEMA Type 1 w/g – General purpose with gasket (IP21)
• NEMA Type 12 – Dust-tight and drip proof (IP52)
• NEMA Type 3R – Non walk-in weatherproof (IP34)
• Arc Resistant (NEMA Type 12)
– Accessibility Type 2
– Tested per IEEE C37.20.7-2001
Standards
• Canadian Standards Association (CSA), Industrial Control Equipment C22.2 No. 14 and TIL D-21
• American Nation Standards Institute (ANSI), Instrument Transformers C57.13
• Institute of Electrical & Electronic Engineers (IEEE)
• National Electrical Code (NEC)
• Occupational Safety & Health Act (OSHA)
• Guide for Harmonic Control and Reactive Compensation of Static Power Converters (IEEE 519-1992)
• National Electrical Manufacturers Association (NEMA), Medium Voltage Controllers Rated 1501…7200V AC ICS 3-2 (formerly ICS 2‑324)
• Underwriters Laboratories, Inc. (UL), High Voltage Industrial Control Equipment 347
• European Directives for EMC
Paint Finishes
• Description Hybrid epoxy power paint
• Color ANSI 49 – medium light grey (standard)
ANSI 61 – light grey (optional)
• Procedure Continuous paint line. All parts are painted before assembly
• Preparation Alkaline wash/rinse/iron phosphate
rinse/iron-chrome sealer
rinse/recirculated de-ionized water
rinse and virgin de-ionized water rinse
• Painting Air-atomized electrostatic spray
Total paint thickness – 0.002 in. (0.051 mm) minimum
• Baking Natural gas oven at 179 °C (355 °F) minimum
Power Bus (Optional)
• Located at the center rear of the structure
• Mounted on the edge to a molded bus support insulator in a common vertical plane
• CENTERLINE horizontal tin-plated copper bus
– optional silver-plated or insulated
• 1200/2000/3000 A
• Front/rear access
Ground Bus
• Continuous bare copper ground bus 6 x 52 mm (1/4 x 2 in.) as standard
• #8…#1/0 AWG or #6…250 MCM mechanical lug supplied at the incoming end of the lineup