Download Spec Section 16483 [specs]

2013-06-19
Section 26 29 23
Variable Frequency Drives
This Master Specification Section contains:
.1
.2
This Cover Sheet
Data Sheet - General
VARIABLE FREQUENCY DRIVE SPECIFICATION
Master Specification Section Text for variable speed drives is attached. The Data Sheets
contained herein include specific requirements to be followed when specifying variable
frequency drives. Contact Alberta Infrastructure, Technical Services Branch Edmonton, for
clarification of these requirements.
INTENT
Engineering responsibility with respect to variable frequency drives (VFDs) is known to be a
contentious issue within the mechanical and electrical engineering disciplines. This Data Sheet is
intended to establish Alberta Infrastructure policy in this area. Do not deviate from the directives
contained in this Data Sheet without express permission from Alberta Infrastructure to do so.
ENGINEERING RESPONSIBILITIES
Engineering responsibilities for VFDs shall be as specified herein, regardless of VFD
configuration (packaged or non-packaged), regardless of location where VFDs are specified,
and regardless of which trade supplies and installs VFDs.
The decision of whether or not to incorporate VFDs for control of mechanical equipment into
the building design shall rest with the mechanical consultant, subject however to Alberta
Infrastructure approval. Unless otherwise directed by Alberta Infrastructure, this decision shall
be based solely on optimum cost/benefit to Alberta Infrastructure.
Product selection, specification preparation, shop drawing review, site inspection, and
commissioning of VFDs shall be a joint responsibility of the mechanical and electrical
consultants. The two disciplines shall properly coordinate their activities as required to fulfill
this joint responsibility.
TRADE JURISDICTION
VFDs which are part of a packaged mechanical system are supplied and installed by the
mechanical trade; non-packaged VFDs are supplied and installed by the electrical trade.
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Section 26 29 23
Variable Frequency Drives
2013-06-19
SPECIFICATION LOCATION
Specify VFDs which are part of a packaged mechanical system within the Division 23 Section
which specifies the packaged mechanical system. If there is more than one packaged
mechanical system incorporating VFDs, specify the VFDs for all such packaged mechanical
systems in Section 23 81 05 - Variable Frequency Drives in Packaged Systems.
Specify VFDs which are not part of a
Section 26 29 23 - Variable Frequency Drives.
packaged
mechanical
system
in
this
For VFDs to be considered part of a packaged mechanical system:
.1VFDs and equipment controlled by VFDs shall be a complete, integral system supplied directly by a single manuf
.2the packaged mechanical system shall require only one main power connection to be made by the electrical subc
System components purchased separately from more than one manufacturer and integrated
into a "package" by a distributor or by the mechanical contractor, shall not be considered a
packaged mechanical system.
MECHANICAL
Packaged equipment, so specified under the mechanical scopes, shall mean pre-wired
equipment supplied in a completely electrically operable state after one final connection of
power wiring, and remote control connections and remote connections if specified.
END OF DATA SHEETS
2013-06-19 BMS Version
Plan No.:
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1.
Section 26 29 23
VARIABLE FREQUENCY DRIVES
Page 3
General
1.1 RELATED REQUIREMENTS
Spec Note: Delete the following three clauses and include the last two clauses in part 3 for
small projects or drive only projects.
.1
.2
.3
1.2
EMCS Start-up and Testing
Electrical Start-up and Testing –
General Requirements:
Electrical Equipment and Systems
Demonstration and Instruction:
Section 23 08 95.
Section 26 08 10.
Section 26 08 40.
CERTIFICATION AND STANDARDS
.1
Products covered by this section to comply to the applicable standards of the following:
.1
CSA
C22.2 No.14-95 Industrial Control Equipment
C22.2 No.100-95 Motors and Generators
C22.2 No.0.16-M92 Measurement of Harmonic Currents
.2
EEMAC Standards for Enclosures, Contact Ratings and Design B Motors
.5
IEEE
519 M1992 Recommended Practices and Requirements for Harmonic
Control in Electric Power Systems
Emerald Book for Transients
.6
NEMA MG1 Part 31 1993 Rev 1 Motors and Generators
Spec Note: Add the following where extended warranty is required.
1.3
WARRANTY
.1
Provide a warranty covering all parts and labour for [one] [two] years.
Spec Note: Review and coordinate requirements with Section 01 33 23 – Shop Drawings, Product
Data and Samples.
1.4
SHOP DRAWINGS
.1
.2
.3
Provide [six] copies of shop drawings and operating literature.
Shop drawings shall include:
.1
Catalogue information and technical data
.2
Outline dimensions, shipping dimensions, weight, foundation requirements and
mounting details.
.3
Wiring, connection, and control diagrams and schematics
Product data for:
.1
input current harmonics,
.2
short circuit rating,
.3
environmental limitations
.4
control features.
Spec Note: Review and coordinate requirements with Section 01 78 23 – Operation and
Maintenance Data and Manuals.
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Section 26 29 23
VARIABLE FREQUENCY DRIVES
Page 4
OPERATING AND MAINTENANCE INFORMATION
.1
1.6
Upon interim acceptance, provide three sets of operating and maintenance manuals
including:
.1
Operating instructions
.2
As built shop drawings
.3
Recommended spare parts list
.4
Manufacturer and supplier data: including addresses and phone numbers for
technical support and spare parts.
SUPPLIER QUALIFICATIONS
.1
System supplier or manufacturer's authorized agent shall have technical service and
maintenance capabilities, using experienced personnel, available on site within 24 hours of
callout.
2.
Products
2.1
PRODUCT MANUFACTURERS
.1
2.2
Acceptable Manufacturers:
.1
Siemens
.2
Telemecanique
.3
Toshiba
.4
Magnetek
.5
Allen Bradley
.6
Mitsubishi
VARIABLE FREQUENCY DRIVES
.1
.2
.3
.4
2013-06-19 BMS Version
General
.1
Drive Type: Adjustable Frequency Drive, Pulse Width Modulated (PWM)
.2
Output Devices: Insulated Gate Bipolar Transistors (IGBT) in the inverter section
of the drive
.3
All contactors, relays and switches EEMAC rated..
.4
All drives of a single manufacture
Motor and Drive Compatibility:
.1
Suitable for use with standard or high efficiency EEMAC Design B motors having a
service factor of 1.15 or
specific motors meeting NEMA MG1 Part 31, 1993 Rev.1.
.2
Suitable for either constant or variable torque loads.
.3
Operable without connected load for setup and testing.
.4
Able to accept opening of a remote motor disconnect, while running, without
damage to the drive.
Enclosure: EEMAC 1 [wall] [floor] mounted
Voltage:
.1
Input: [208] [480] [600] volts nominal, ±15%;
3 phase; 60 Hz ±3Hz.
.2
Output: [208] [480] [600] volts, 3 to 66 Hz, 3 phase,
with volts per hertz compensation.
.3
Transformers: Do not use transformers on either the input or output for voltage
compliance.
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.5
Section 26 29 23
VARIABLE FREQUENCY DRIVES
Page 5
Rating:
.1
Power: Horsepower or Kilowatt ratings as specified in the Equipment Schedule.
.2
Service Factor: 1.1 for rated output current, continuous duty
.3
Thermal: 130% of rated output current for one minute.
.4
Efficiency: 97% minimum at maximum load and speed.
.5
Power Factor: 0.95 minimum line side at all speeds.
Spec Note: The THD criteria are for CURRENT. The THD numbers shown below are intended to
require most manufacturers to add input filtration for drives over 50 HP. For individual drives and
where total load of all drives is under 50 HP this criteria may be increased to 15%THD.
.6
Harmonic Distortion: Total Harmonic Distortion (THD) for Input current generally
not to exceed the requirements of IEEE 519 M1992 where the point of common
coupling is considered to be where the drive connects to the system and
specifically not to exceed:
10% for drives 100 HP and larger
12% for drives between 50 and 100 HP
15% for drives under 50 HP.
Spec Note: Short circuit withstand must be coordinated with available system fault current and
upstream protective devices.
.7
Short Circuit: Drive capable of withstanding short circuit of [10,000]
[25,000][50,000] [100,000] amps, asymmetric at line side terminals.
.6
Drive Protection:
Provide the following protection:
.1
Transients:
Input transient protection for IEEE Class B ringwave.
.2
Voltage:
Line over and under voltage, phase loss and phase unbalance.
.3
Short Circuit: Line to line and line to ground.
Drive to shut down without damaging any power circuit devices on either of these
faults. Do not use fuses or isolation transformers to provide this protection.
.4
Overcurrent: electronic, instantaneous
.5
Current Limit: adjustable for 70 to 110% rated current.
.6
Internal controller over-temperature.
.7
Ambient Conditions:
conditions
.1
Temperature:
.2
Humidity:
.3
Altitude:
.8
2013-06-19 BMS Version
The drive shall operate satisfactorily under the following ambient
0 to 40°C.
5 to 90% non-condensing.
up to 1000m without drive derating
Controls:
Provide the following controls and adjustments:
.1
Minimum speed:
0 - 70%, adjustable.
.2
Maximum speed:
50 - 150%, adjustable.
.3
Acceleration /deceleration ramp:
1 to 300 seconds
(0 to 100% speed), adjustable, linear or S curve.
.4
Speed and load meter:0 to 100% with selector switch, door mounted
.5
Run and Stop push buttons, door mounted
.6
Hand-off-auto selector switch, door mounted
.7
Keypad speed setting, door mounted.
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Section 26 29 23
VARIABLE FREQUENCY DRIVES
Page 6
VARIABLE FREQUENCY DRIVE
.9
Motor Protection:
Provide the following motor protection features:
.1
Overload:
Provide thermal or solid state overload protection, adjustable from
80% to 115% of full load rating. For drives feeding multiple motors, provide
individual motor overloads.
.2
Over temperature:
Provide positive temperature coefficient (PTC) thermister
protection for motors identified in the Equipment Schedule.
.3
Stall protection:
electronic, to trip the drive off under motor stall conditions.
.4
Automatic restart:
after an inverter fault trip the drive shall attempt to restart
automatically three times and lock out after the third attempt if a restart has not
occurred.
.5
Rotating motor restart: The drive shall restart a rotating motor without first stopping
it for short duration power outages, shut downs or fault trips by resynchronizing
with the motor at it’s rotating speed and re-accelerating it to setpoint speed.
.6
Output Filter: For drives of 100 HP and larger, provide an RLC output filter
network to limit dv/dt or provide data showing that a filter is not required for the
specific motor being driven.
.10
Control Interface:
Provide the following control interfaces:
.1
[4-20 mA] [0-10 VDC] [0-5 VDC] signal follower switchable to inverse
characteristics
.2
Dry contact closure for run command
.3
Dry contact (N.O.) output to indicate:
.1
Inverter Fault
.2
Inverter Running (motor turning)
.4
4-20 mA isolated output, proportional to speed
.5
4-20 mA isolated output, proportional to load
Spec Note:
Systems.
Include the following where drives are controlled by Energy Management Control
[.6
signal follower to interface with the Energy Management Control System (EMCS)]
Spec Note: Include the following where drives are controlled by means of an independent
process controller.
[.6
.11
2013-06-19 BMS Version
Provide integral PID controller to directly accept sensors for [temperature]
[pressure] [flow].]
Status: Provide on line status information.
Display each of the following status points by a separate pilot light or LCD display on the
controller door:
.1
Start Command Present
.2
External Trip (interlocks open)
.3
Lockout (fault shutdown after 3 restart attempts)
.4
Ready (power on - no faults present)
.5
Power On
.6
Low reference (missing or zero speed reference)
.7
Motor Running Direction
.8
Inverter in current limit
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.12
.13
.14
2.3
Section 26 29 23
VARIABLE FREQUENCY DRIVES
Page 7
Fault Diagnostics:
Provide diagnostics which memorize and display the last ten fault
occurrences even after the drive restarts. Indicate each of the following faults by a
separate pilot light or LCD display on the controller door:
.1
Stop called for or start error
.2
External trip (interlock opened)
.3
Controller over temperature
.4
Emergency stop
.5
High DC Bus
.6
Output transistor fault
.7
Low DC Bus
.8
Current Overload
Indicators:
Provide additional LED's or other diagnostics to allow signal tracing of logic
and base driver circuit boards.
Interlocks:
Provide external interlock for firestat, freezestat, smoke detector or other
devices as indicated in the Equipment Schedule. Common interlock to cause motor to
coast to stop.
SYSTEM OPERATION:
.1
.2
.3
.4
2.4
Motor to start when the selector switch is in the "auto" position and the run command is
received from the control system. Speed to be controlled by the control signal.
Motor to start when the door mounted run pushbutton is depressed when the selector
switch is in the "manual" position. Speed to be controlled by the door mounted manual
speed control.
Motor to automatically restart after a power outage when the power returns, if the run
command is maintained. After short duration outages, motor to be restarted while rotating.
Motor to restart automatically, with up to 3 attempts, in the event of an inverter trip. Drive
to lock out after 3 unsuccessful attempts.
OVERCURRENT PROTECTION
Spec Note: Include one of the following clauses. Edit to require unfused disconnects where
upstream overcurrent protection is provided remote from drive location. Use the electronic
overcurrent protection clause only where additional protection is provided by upstream
distribution system components and drive models specified can provide this feature.
.1
Provide incoming fused line disconnect switch or circuit breaker with the following:
.1
Door interlock
.2
Provisions for padlocking operating mechanism
.3
Overcurrent curves for fuses or circuit breakers coordinated with the drive’s output
protection. Fuses not to blow or breakers trip under output faults such as
overcurrent, short circuit and ground fault
.1
Provide electronic overcurrent protection with trip curves coordinated with the overcurrent
devices upstream in the facility distribution system.
3.
Execution
3.1
MOTORS
.1
2013-06-19 BMS Version
Ensure that the motors fed from the drives are compatible with the drives, including load
rating, voltages and thermistor protection.
Plan No.:
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3.2
Section 26 29 23
VARIABLE FREQUENCY DRIVES
Page 8
INSTALLATION
.1
.2
.3
.4
.5
Spec Note:
.6
3.3
Set and secure the drives in place on channel bases, rigid, plumb and square to the
building floors and walls.
For drives 100 HP and larger, locate drive so that conductors from drive to motor are less
than 10m long.
Provide two hold down bolts for each 1m linear width.
Protect drives from dust and damage during construction.
After connections are made, vacuum clean interior, hand clean exterior and touch up any
damaged paint.
Delete the following clause 3.2.6 and add clauses 3.3 and 3,4 when Sections 26 08
10 and 26 08 40 are not provided.
Comply with requirements of Sections 26 08 10 and 26 08 40.
START-UP AND TESTING
.1
.2
.3
3.4
For drives 100 HP and larger, provide the services of a manufacturer trained technician,
on the site, to review the installation and assist in the set up, starting and testing of the
drives. Allow a minimum of four hours on site per drive.
Set up the drive prior to energizing. Set up to include initial settings for all adjustable
parameters.
Function test the drive prior to interim acceptance. Test shall include:
.1
functional testing of all safety devices
.2
start, run up, signal tracking, stop and hot restart
.3
load test using the connected load, run through available load and speed range
.4
test of control sequences
.5
snapshot of harmonic content for input and output current at 100% and 50% load
DEMONSTRATION AND INSTRUCTION
.1
.2
2013-06-19 BMS Version
For drives 100 HP and larger, provide operator training, on site, using manufacturer
trained personnel.
Training to include the following topics:
.1
Drive theory
.2
Drive configuration and models installed
.4
Set up for each drive type
.5
Maintenance
.6
Troubleshooting
Plan No.:
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Section 26 29 23
VARIABLE FREQUENCY DRIVES
Page 9
3.5
Drive
Number
EQUIPMENT SCHEDULE
Quantity
2013-06-19 BMS Version
Motor
Horsepower
POC
Interlocks
Breaker or Disconnect