Report Underwriters Laboratories Inc.
- 2600 N.W. Lake Rd.
Underwriters Camas, WA 98607 -8542
877 -UL -HELPS
Laboratories Inc.()
I - v
August 4, 2009
FE5693, 09CA22264
Turn -key Controls Ltd
15 Kolibri Way
Vernon, V1 H 1 E3 Canada
Attention: Mr. Doug Halvorson
Subject: Field Evaluation of Motor Control Center (5 sections) - 1 unit
Dear Mr. Halvorson:
On May 20, 2009, UL conducted a Field Evaluation on the above subject equipment. It was determined that one
or more of the products evaluated did not comply with the applicable requirements and UL's Field Evaluated
products Mark(s) were not applied to the product(s). A Discrepancy Report was submitted to you on May 26,
2009.
Please find attached a copy of the Preliminary Findings Report(s). This report should be reviewed to verify that the
information provided is complete and correct. The report provides the details of the evaluation up to this time and
identifies each of the non - conforming issues along with the required corrective actions.
When the corrective actions have been completed and the equipment is ready to complete the evaluation, please
contact our FE coordinator to schedule a return visit, at 877 -UL -HELPS (877- 854 - 3577), ext. 44701 or email:
fieldevaluations @us.ul.com (please add " *Melissa A. Hanney" on subject line). Please note that on August 20,
2009 we will be closing this project for no activity, and bill you for the remaining charges.
If you should have technical questions regarding this report, please contact me as noted below.
Very Truly Yours,
Titus S. Vader
Field Engineering Services
Direct Line: 503 - 349 -8015
Email: Titus.S.Vader @us.ul.com
cc: Mr. Gary Noble - Senior Electrical Inspector, CITY OF TIGARD
Underwriters Laboratories Inc.
2600 N.W. Lake Rd.
■
Camas, WA 98607 -8542
' " ',. Underwriters 877-UL-HELPS
Laboratories Inc.
Preliminary Findings Report
For
Motor Control Center (5 sections) - 1 unit
Installation Site:
Durham Advanced Wastewater Treatment Facility
16580 SW 85th Avenue
Tigard, OR 97224
Requested by:
Turn -key Controls Ltd
15 Kolibri Way
Vernon, V1 H 1E3
Jurisdiction:
CITY OF TIGARD
Tigard, OR 97223
UL Reference No.: Proj.: 09CA22264 Submitted by: = I4
File: FE5693 Titus S. V
Field Engineer
Date: August 4, 2009 Reviewed by: eQ L 41 °'�""j
Sudiptb Chakraborty
Field Engineer
Table of Contents
1.0 Executive Summary 1
2.0 Conditions of Acceptability 2
3.0 Referenced Standards 3
4.0 Product Evaluated 3
5.0 Construction Evaluation 4
6.0 Electrical Test Results 9
7.0 Evaluation Discrepancies 9
8.0 Reserved 9
9.0 Test Equipment 12
APPENDIX A - Photographs Al
1.0 Executive Summary
Federal OSHA and many local jurisdictional regulations require products to be Listed or
Evaluated by a recognized testing organization. Field Evaluations are one means to
assure that custom or otherwise non - certified products meet applicable product safety
standards, Codes, Safety Orders, or other industry standards. A Field Evaluation
provides an unbiased independent assessment of products to the essential requirements
of applicable product safety standard(s) for a specific end use location. The engineering
assessment provides the Authority Having Jurisdiction with information to assist in the
decision on approval of the product and related installation.
The purpose of this project was to provide an assessment on a product that was not
Listed or otherwise found not to be certified by a testing laboratory recognized by the
Authority Having Jurisdiction. Products undergoing this evaluation process do not result
in establishing a UL Listing, UL Recognition, or UL Classification. UL has not
established a factory follow -up service program to determine the conformance of any
subsequently produced, relocated, or otherwise altered product(s) or system(s).
At the request of Mr. Doug Halvorson of Turn -key Controls Ltd, a Field Evaluation project
was initiated. The preliminary evaluation was completed at the Durham Advanced
Wastewater Treatment Facility, 16580 SW 85th Avenue, Tigard, OR, on May 20, 2009
by UL Engineer, Titus S. Vader.
The results of the preliminary evaluation and testing identified items that are not in
compliance with the applicable product safety standard(s) and therefore require
corrective action(s) as detailed in Section 7.0 of this report. When these discrepancies
are corrected, a final inspection and any remaining testing will be required to complete
the Field Evaluation. If this follow -up evaluation determines all issues are resolved and
the product to be in compliance, UL will consider the product acceptable and will apply
the Field Evaluated Product Mark.
Please note that final approval of this product and the installation is by the CITY OF
TIGARD inspecting authority.
Field Engineering Services Report Page 1
2.0 Conditions of Acceptability
Except where otherwise stated in the product description and evaluation sections of this
report, this evaluation and the application of the Field Evaluated Product Mark is subject
to the following Conditions of Acceptability.
2.1 Except for like- for -like component replacement in the event of component failure,
no change, alteration, or addition to the product or system shall be made that
would alter the construction, operation, function, layout, source of supply, physical
location, or any other change, alteration, or addition that may be made to the
product. If such changes, alterations, or additions to the product occur, the Field
Evaluated Product Mark shall be considered invalid and a separate evaluation
shall be required to determine compliance with the applicable product safety
Standards under the changed conditions.
2.2 The completed evaluation and application of the UL Field Evaluated Product Mark
by UL does not assume liability on the part of UL and does not relieve the
manufacturer, installer, user, or other relevant parties of their responsibilities. The
product evaluation is based on adherence to sound engineering practices, and
compliance with the applicable product safety standards and installation Code.
2.3 This evaluation considered the risks associated with electric shock, fire, and
casualty hazards as specified in the evaluation section of the report only. No
other hazards were evaluated during this evaluation.
2.4 Unless otherwise stated in the product description, this product was evaluated for
installation in an indoor, dry, normal environment only. The product was not
evaluated for installation in any hazardous classified location as defined in the
latest edition National Electrical Code as adopted by the National Fire Protection
Association. The product was not evaluated for installation in an environment
where subject to rainfall, water spray, steam, or exposure to any corrosive
chemicals that will cause deterioration of the enclosure or components. If such
environment is encountered in the future, the product will require re- evaluation.
2.5 The UL Field Evaluated Product Mark shall not be considered as equivalent to the
UL Listing Mark, UL Recognized Component Mark, or UL Classified Product
Mark. The UL Field Evaluated Product Mark indicates compliance with the
applicable parts of the Standards referenced in Section 3 at the time the Mark was
applied and with consideration only for the final installation site. The applicable
parts included in the evaluation are the construction review, markings, and those
testing protocols that are non - destructive.
Field Engineering Services Report Page 2
3.0 Referenced Standards
• UL 845, Standard for Motor Control Centers, 5th edition, revised: August 25, 2006
• NFPA 70 National Electrical Code (NEC), 2008
Note: The NEC is only referenced for those construction features necessary to
ensure the product can be properly installed in accordance with the NEC.
4.0 Product Evaluated
4.1 Motor Control Center (5 sections) - 1 unit
The equipment is a new Motor Control Center.
4.2 Nameplate Data
Manufacturer: ECM
Model number: EEMAC
Serial number: SO 0811 -920
Electrical ratings:
Voltage 480 Volts AC
Current (FLA) Horizontal: 600 A
Verical: 300 A
Phase 3 phase, 3 wire
Frequency 60 Hertz
4.3 Main Overcurrent Protection
The main overcurrent protection was provided by:
Manufacturer's instructions properly specify the over current protection to be
provided by the installer.
Field Engineering Services Report Page 3
5.0 Construction Evaluation
The following specific areas were evaluated using the procedure indicated. Unless
stated otherwise in Section 7.0, all the following items were found to comply with the
applicable part(s) of the referenced standard(s). Additional characteristics and features
unique to the product, with consideration for the final installation site, were further
addressed as required by the standard procedure and applicable product safety
standard(s).
5.1 Construction Inspection
Method: A construction inspection was completed with particular emphasis
on the following items.
• Critical component certification • Spacings
• Guarding of live parts • Wiring and wiring methods
• Grounding and bonding • Terminations
• Overcurrent protection • Separation of circuits
• Drawings and instructions • Markings
• Conductor ampacities • Damaged components
Results: The product was found to comply with the construction requirements
identified above and the standard(s) indicated in section 3.
5.2 Critical Components
Method: The following critical components were inspected for evidence of Listing
or Recognition in accordance with UL policies:
• Circuit breakers • Fuses and fuse holders
• Wire and cable assemblies • Power disconnecting devices
• Transformer and power supplies • Terminal blocks
• Relays • Receptacles
• Motors • Contactors
• Heater loads • User interface control devices
• Motor overload devices • Enclosures
• Safety circuit components
Results: The critical components identified above were found to be Listed or
Recognized by a testing laboratory acceptable to UL in accordance with UL
policies.
Field Engineering Services Report Page 4
5.3 Grounding and Bonding
Method: All accessible metal parts were verified visually and by test to be
bonded together and to be connected to the supply equipment - grounding
conductor. Where applicable, a bonding continuity test was conducted and the
results recorded.
Results: The product was verified to be grounded and bonded in accordance
with applicable standards referenced in Section 3 and Article 250 of the NEC.
The product had an identified terminal for the connection of the supply equipment -
grounding conductor or had a suitable cord supplied with equipment - grounding
conductor included.
5.4 Guarding of Live Parts
Method: The product was visually inspected to ensure that all components were
assembled in a suitable enclosure and made effectively inaccessible to
unauthorized persons. An articulated finger probe was used to measure access
where necessary. Vent openings were verified not to align with potential
discharge paths for gases expelled from circuit breakers when clearing fault
conditions.
Results: Enclosures were found to prevent contact with moving parts, electrically
energized parts, and hot parts. Enclosures provided an acceptable degree of
protection for internal components (according to the product's installation
environment). All electrically live parts external to the enclosure were guarded as
required by the applicable standards. There were no electrically hazardous
energized parts accessible from the exterior of the ultimate enclosure as required
by Section 110.27 of the NEC.
5.5 Wiring and Wiring Methods
Method: All conductors were inspected for Listing or Recognition by a
recognized testing laboratory in accordance with UL policies. The conductors
were examined for proper ratings (voltage, ampacity, temperature, flexibility, flame
rating and environmental) as required for the application. The wiring methods
were verified to comply with the applicable standards and provide proper physical
protection including strain relief where applicable. The wiring terminations were
inspected for correct application, number of conductors in accordance with their
Listing and correct ampacity based on temperature ratings.
Field Engineering Services Report Page 5
Results: Detailed as follows.
5.5.1 Supply Connections -
The supply connection point(s) was examined and determined to have
proper terminals and identification provided.
5.5.2 Wiring Methods —
Internal wiring methods conformed to the applicable standard. All wiring
was routed, secured, and protected from moving parts, external heat
sources, and sharp edges.
5.5.3 Separation of Circuits —
Unless provided with insulation rated for the highest voltage involved,
wiring of low voltage and line voltage circuits within enclosures were found
to be segregated or separated by barriers. The product wiring for low
voltage and line voltage circuits external to enclosures were found installed
in separate raceways or wireways.
5.5.4 Wire Terminations -
All wire terminations were found to be suitable for the number and the size
conductor installed.
5.5.5 Strain Relief —
External conductors and cable assemblies entering enclosures and internal
conductors were found to be adequately secured to prevent strain from
being transmitted to terminations.
5.5.6 Conduit Connections
All conduits, gutters, and wireways were found to be properly sized for the
number and size of conductors and to be properly supported.
5.6 Overcurrent Protection
Method: The product was inspected to ensure proper overcurrent protection
was provided for the internal conductors and components. Overcurrent devices
were inspected for proper ratings including voltage, ampere rating, interrupting
rating, suitability as branch circuit protection, where required, and Listing.
Field Engineering Services Report Page 6
Results: Detailed as follows:
5.6.1 Supply
The product was verified as having main overcurrent protection as
indicated in section 4.3, Main Overcurrent Protection. Internal overcurrent
protection was verified as being properly rated for the intended application.
All devices designed to open under fault conditions were verified as having
proper short circuit interrupting ratings.
5.6.2 Conductors
Internal conductors to the product or installed as part of the product were
determined to have proper overcurrent protection.
5.6.3 Components
Components such as transformers, heater elements, and motors were
verified to have overcurrent protection with the correct ratings and proper
type.
5.7 Suitability for Installation
Method: The product was inspected to ensure suitability for installation in
accordance with the NEC as specified in the referenced standard(s). This
inspection specifically determined if correct working space and clearances could
be provided, that proper wire bending space for all field wiring was provided,
provisions for mounting were provided, and areas for conduit entries, as
applicable, were in place.
Results: Detailed as follows:
5.7.1 Wire Bending & Gutter Space
Wire bending space for all field wiring was verified as being in accordance
with the NEC.
5.7.2 Clearance and Working Space
The product was verified that it is or could be installed with acceptable
access, clearances, working spaces and distances from combustibles.
Field Engineering Services Report Page 7
5.8 Markings
Method: The product nameplate was inspected to ensure all applicable
information was provided. Other markings including hazard - warning labels, fuse
replacement markings, environmental limitations and installation type markings
were verified as being present, in the proper location, and provided in the correct
format.
Results: Required Markings were evaluated for the product according to the
applicable UL Standard(s). Additional markings were identified for the installation
site, as the working environment requires.
5.8.1 Unit Nameplate
A permanent nameplate, suitable for the intended installation environment
and with all the applicable information was verified as being present. The
nameplate was verified as being visible or accessible after installation, or
located for access in accordance with the provisions in the referenced
standard(s).
5.8.2 Fuse Replacement
Fuse replacement markings were provided and installed at all fuse
locations or on a permanent chart suitable for the environment affixed to
the product enclosure.
5.8.3 Hazard Warning Labels
Applicable hazard warning markings were installed on or internal to the
product identifying known hazards.
Field Engineering Services Report Page 8
6.0 Electrical Test Results
Testing was completed to verify the product was operating within normally expected
parameters. Unless stated otherwise in Section 7.0, all the following items were found to
comply with the applicable part(s) of the referenced standard(s), The testing completed,
detailed in the following paragraphs, followed the production testing requirements in the
applicable product safety standards but as a minimum included:
6.1 Grounding and Bonding
Method: Grounding and bonding continuity was verified by the ohmmeter
method. The ohmmeter method verified only the grounding continuity from the
supply equipment grounding conductor termination to any exposed conductive
metal part that is likely to become energized. The maximum resistance measured
or calculated from the current test must be less than or equal to the requirement in
the referenced product safety standard.
Results: The grounding continuity and /or bonding test results indicate that
adequate electrical continuity or bonding is provided on the product.
7.0 Evaluation Discrepancies
7.1 Horizontal Bus Rating
The horizontal bus supplying power to each section as well as the supply bus to
the motor control center (MCC) is undersized for the rating of the overall MCC.
The bus is 1 -1/2 "x1/4" with a cross sectional area of 0.375 square inches, hence
its rating being 375 Amps max. The MCC is rated 600 Amps.
Action Required: Since the horizontal bus must have a continuous current
rating of 600A or higher, de- rating the MCC is not acceptable. Install another bus
1 -1/2 "x1/4" on top of the existing horizontal bus and supply connection bus to
increase the rating to 600 Amps.
Reference: UL 845, Section 5.3.2 and 8.2.16.2
Field Engineering Services Report Page 9
7.2 Markings
The MCC was provided with two nameplates on two sections. However, the
following information shall be given by the manufacturer for each section:
a) Manufacturer's name or trademark
b) Type designation, serial number, or equivalent
c) Section number (i.e. Section 1 of 5, Section 2 of 5 etc.)
d) Electrical ratings as noted below
1) Voltage (Volt, V, Vac, Vdc);
2) Phase (0, phase);
3) Frequency (Hz, hertz);
4) Horizontal power bus ampacity (i.e. 600 A)
5) Vertical power bus ampacity (i.e. 300 A)
6) Bus short- circuit current ratings (A rms sym, or A dc V max).
e) Enclosure type;
f) Termination and wiring information, as follows:
1) Tightening torque for field- installed conductors (lb-in, or N -m).
2) Required temperature rating for field installed power
conductors ( °C);
3) Material requirements for conductors (Cu, Al, Cu -AI, AI -Cu).
Action Required: Provide nameplates that include the information as noted
above for each section.
Reference: UL 845, Chapter 6
7.3 Short Circuit Current Rating
The short circuit current rating could not be determined since the circuit breakers
used in many of the units are instantaneous type and are not rated. According to
the referenced standard, when the short- circuit protective device is an
instantaneous -trip circuit breaker, it shall be evaluated by design tests.
Action Required: Provide test data information showing that using the circuit
breakers installed in the units, that the short circuit current rating of 42 KA rms
sym. is adequate.
Reference: UL 845, Section 5.4.2
Field Engineering Services Report Page 10
7.4 Fuse Replacement Markings
Fuse replacement markings specifying the electrical ratings of replacement fuse
sizes were not found at the fuseholder or on a chart provided in some of the units.
Ensuring continued proper overcurrent protection requires adequate markings for
replacement fuses when installed. Providing the fuse type is also recommended
for added assurance of correct replacements.
Action Required: Provide fuse replacement markings at each fuseholder
indicating the voltage and current at the minimum. Alternatively, provide a chart
indicating the fuse identification and replacement information specified above.
The chart shall be permanently affixed so that is visible when the door or cover is
opened. The markings or chart are to be permanent and suitable for the intended
installation environment.
Reference: UL 845, Section 6.3.45
7.5 Overload Rating
The units that contain the Profibus Current Transformer type units (that
communicate with the drives and PLC) are marked based on the rating of this
device (2.4 to 25 Amps) rather that the range of the adjustable motor overload
relay connected to the motor contactor.
Action Required: Revise the nameplates to show the overload relay range
based on the overload relay connected to the contactor.
Reference: UL 845, Section 6.2.2
7.6 Electrical Schematics
Branch circuit short circuit and overload protection could not be verified since
electrical schematics were not provided.
Action Required: Provided electrical schematics showing the voltage, HP and
FLA rating of the motors and Toads that the MCC controls, and ensure that the
branch circuit overcurrent protection and the branch circuit overload protection is
adequate based on the loads involved.
Field Engineering Services Report Page 11
8.0 Test Equipment
The following test equipment was used as part of the evaluation and testing on this
project. The table below identifies this equipment along with the calibration information.
Equipment Name Equipment Calibration
Identification Due Date
Performance Testing
Fluke 87V Digital Multimeter 33830 04/03/2010
Field Engineering Services Report Page 12
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Field Engineering Services Report