PWG295628-34899 - Supply and Install 24 New Variable Frequency Drives

Supply and install 24 new variable frequency drives
  
Scope of work:
 

1. Coordinate installation, including unit locations, wiring routing, and integration into building automation system, with BJCC Critical Environments Program Manager (Bill Giffen).
2. Supply and install 24 new variable frequency drives for air handling unit fans as per the attached list.  Provide separate conduits and wiring to EMCC for power and load. VFD’s shall be protected by fuses specified by manufacturer. Approved make and model: Asea Brown Boveri (ABB) ACH550, or approved equivalent.
3. Provide conduit and wiring for connection of fire, smoke contacts, external start command, and VFD control signal. All external interlocks shall function in hand or auto. External start/stop signal shall be functional in auto mode. 120 VAC control power to be supplied by fused transformer from feeder EMCC. Connection changes within EMCC Cell shall terminate to approved contact blocks.
4. Provide all necessary hardware required to complete the installation, including but not limited to disconnects, wiring, control wiring, conduit, fittings, connectors, fasteners, box covers, and other accessories required to ensure a complete, safe, and fully operational system.
5. Perform start-up commissioning of the VFD’s by a factory certified service technician. Start-up services shall include checking for proper operation and installation of the VFD’s, its options and its interface wiring to the building automation system. As a minimum this service shall include:

• Verification of wire terminations to the VFD’s and its optional circuitry.
• Measurement for verification of proper operation on each of the following items: Motor voltage and frequency. Verify proper motor operation.
• Control input for proper building automation system interface and control calibration.
• Calibration for the following set points (and adjust as necessary): minimum speed, maximum speed;   acceleration and deceleration rates.

1. Provide Operation and Maintenance Manuals for each unit.

• Institute of Electrical and Electronic Engineers (IEEE).
• IEEE Standard 519-1992, Guide for Harmonic Control and Reactive Compensation for Static Power Converters
• American National Standards Institute (ANSI)
• Underwriters Laboratory, Inc. (UL)
• UL Standard 508, Electrical Industrial Control Equipment
• Canadian Standards Association (CSA)
• Ontario Electrical Code (OESC )
• National Electrical Manufacturer’s Association (NEMA) ISC 6, Enclosures for Industrial Controls and Systems.

• Power Unit Rating: 100 percent continuous, 110 percent intermittent for one minute when previously operating at full load.
• Minimum Efficiency: 90 percent at maximum output; 85 percent at 50 percent output
• Rated Input Voltage: 575V, 3 phase, 60Hz and 208V 60Hz available.
• Output Voltage: 0-575V 60Hz.
• Allowable Wire Length to Motor: 200 ft. (unless VFD schedule shows greater wire length)

• Ambient Temperature: 0 to 40 degrees C (32 to 104 degrees F)
• Relative Humidity: 0 to 95 percent, non-condensing.
• Elevation: 0 to 3300 feet (100 meters) above MSL.
• AC line voltage variation:

• 480 V: Minus 5 percent to plus 10 percent; 48-63 Hz.
• 575 V: Minus 5 percent to plus 10 percent; 48-63 Hz.

• Local/Remote switch
• Digital Indicator of Frequency, Current, Volts, Torque, Hp, kW, kWhrs
• Manual allowing speed control
• Run/Stop Switch
• Fwd/Rev Switch
• Power on and run indicator
• Fault indication including: current limit, overvoltage, undervoltage, overload, or thermal motor protection.

• Communication to DDC, interface with BACnet.

• Analog Input: 0-10Vdc, 0-20mA, 4-20mA, 20-0mA or 20-4mA. Linearity deviation between control signal and motor speed: Plus or minus 1 percent of rated motor speed.
• Digital Inputs: 4 each programmable for reset, start, stop, quick stop, change to preset speed, change parameter set, increase speed, decrease speed, current limit over ride.
• Analog Outputs: 4 each programmable to provide 0-20mA or 4-20mA proportional to frequency, torque, current or power (KW)
• Digital Outputs: 2 each programmable to indicate ready, run, trip, current above preset, frequency above preset, or electronic thermal overload.