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Spring 2007 - Presentations

Check this page periodically to learn about the Presentations scheduled for the Spring meeting.

• Special Activities
• Opening Session
• Mini-Expo Vendors
• Subcommittee A
• Subcommittee B
• Subcommittee C
• Subcommittee D
• Transnational Luncheon
• Educational Program

Please Note: This is a only a listing of the presentations and
UNLESS NOTED, DOES NOT IMPLY THE ORDER IN WHICH THEY WILL BE PRESENTED

• Special Activities

  Joint Panel Session, Subcommittees A and B, Tuesday May 8, 2:00 - 5:30 PM

  Title: Cable Failure Analysis

  Panel Moderator: Roy Jazowski, Homac Manufacturing Co.

  Presentations & Panelist:

  “Analysis of Cables Failures – A Utility’s In-House Approach” by Margaret Jasek, Public Service Company of New Mexico

  “Distribution Cable Failure Analysis at Hydro-Quebec” by Serge Pelissou, Hydro-Quebec IREQ

  TBA by John Smith, BICC General Cable Corporation

  “Field Aged Cable Failure Analysis for Making Repair, Replace or Restore Decisions” by Ray Bristol, Hendrix Wire and Cable

  “Medium Voltage Cable Failure Analysis Experience at NEETRAC” by Tom Champion, NEETRAC—A Center of Georgia Tech

  “Solid Dielectric Cable Failure Analysis at Consolidated Edison Co. of New York”  by Thomas Campbell, Consolidated Edison

  Each panelist will present information on procedures used in performing cable failure analysis within their respective organizations along with examples of typical cable failures. Photographs of failures will be presented followed by an open discussion question and answer session.

• Opening Session
   

  Our Opening Session on Monday morning will be busy.  We plan to start at 8 am to properly recognize members with special IEEE recognitions and a guest speaker, Wanda Reder-IEEE PES President Elect, will address our committee.

  Wanda Reder Biography:
   Wanda Reder, is the Vice President of the Power Systems Services Division at S&C Electric Company offering engineering, field service, and project management capabilities to utilities, developers and industrial customers. Prior to S&C, Wanda was the Vice President of T&D Asset Management at Exelon where she had responsibility for asset investment strategy, standards, engineering, planning, reliability and work management in Chicago and Philadelphia. Prior to Exelon, Wanda was the Vice President of Energy at Davies Consulting. Additional experience includes starting and leading a company that performed predictive diagnostics on underground cable and numerous leadership positions at Northern States Power including justification and deployment of distribution automation, planning for long-range delivery system needs, and development of conservation and load management initiatives.
  Wanda received an Engineering Bachelor of Science degree from South Dakota State University and a Masters in Business Administration from the College of St. Thomas. Wanda has served on the IEEE Power Engineering Society Governing Board since 2002 and now is the IEEE PES President-Elect. Since 2004, she has been researching the maturing power industry workforce to prepare a “road map” for actions to be taken by IEEE Power Engineering Society.

• Mini-Expo Vendors
  • CYME International T&D
  • The Kerite Company
  • G&W Electric
  • The Homac Companies
    1. The Homac Companies will be showing their new Storm Safe product at their tabletop. Information on this new product can be found here (1MB PDF).
  • Houston Wire & Cable Company
    HWC is one of the largest distributors of specialty wire and cable and related services to the US electrical distribution market. We are focused on providing our electrical distributor customers with a single-source solution for specialty wire and cable and related services by offering a large selection of in-stock items, exceptional customer service and high levels of product expertise. Since it’s inception in 1975, HWC has expanded from its original location in Houston, Texas to eleven strategic locations nationwide.
  • IMCORP
    1. IMCORP is the leading provider of underground power cable reliability enhancement solutions.  The company’s patented partial discharge (PD) diagnostic technology, proven through testing of thousands of miles of underground cable, pinpoints the exact location of cable defects with unsurpassed accuracy.  In addition to locating existing cable and accessory defects, IMCORP’s non-destructive test methodology provides predictive diagnostic information concerning future cable performances. IMCORP’s reliability improvement process is a proactive approach that is designed to be integrated into a clients existing reliability program.  The process is proven to dramatically improve cable reliability at a significant lower cost.
  • Kinectrics
  • Sensa a Schlumberger company
  • Tyco Electronics Corporation

    Tyco Electronics Corporation's Table Top Display will present:

    1. Tyco’s new All-In One Medium Voltage Splice **There will be a special installation demonstration of this splice on Monday, May 7 at 1:30 PM conducted by Tim McLaughlin**
    2. New Raysulate Products
    3. Tyco’s Gel products
    4. Tool Free Terminations
• Subcommittee A - Cable Construction and Design, Tuesday May 8, 2007, 10:15-12:00 PM
  • 10:15 - 10:20 AM: Subcommittee Business: Announcements John T. Smith, III, General Cable - Chair, John T. Nierenberg, Seattle City Light - Vice-Chair
     

  • 10:20 - 10:40 AM – "New Supersmooth Shield Technology” by: S. Joon Han, Yimsan Gau, The Dow Chemical Company
     

    Abstract: A new semiconductive supersmooth shield compound for HV/EHV cables was developed with improved processability and smoothness. These improvements were made possible by new polymer technology. The new supersmooth compound has been tested extensively both in the laboratory and on insulated power cables. In this presentation, the material characteristics and cable performance of the new supersmooth compound will be discussed.

  • 10:40 - 11:00 AM – "Failures in PILC Cable and Accessories Analyzed at CTL 1996 – 2005" by Carlos Katz, Cable Technology Laboratories

    Abstract: After describing the main types of PILC cables, data obtained during 10 years of dissecting failures in cables and accessories at CTL will be presented. Distribution of failures by overall mode, such as moisture, thermal runaway, partial discharge, mechanical damage and workmanship will be outlined. The formation of wax in PILC cables will be explained. Lead sheath related breaks, allowing the entry of moisture into the cable core, will be reviewed. The effect of moisture on dissipation factor and breakdown strength will be illustrated. Failures in cables, terminations and joints will be presented independently and explained as to how they originate.

  • 11:00 - 11:20 AM – "Rejuvenation Reformulated", by Glen J. Bertini, Gary A. Vincent, Novinium, Inc.
    Abstract: Over the last two decades the economical phenylmethyl-dimethoxysilane (PMDMS) has been used to extend the reliable life of over 75 million feet of medium voltage underground distribution cable. Materials with superior safety and reliability performance have been introduced and are rapidly supplanting the venerable PMDMS, just as tree-retardant cross linked polyethylene (TRXLPE) formulations replaced cross-linked polyethylene (XLPE). But for the cost conscious circuit owners such as those in developing economies, the low cost of PMDMS may be attractive. This paper introduces a reformulation of the venerable and inexpensive PMDMS and demonstrates a substantial performance improvement. Finally all three commercially available technologies are considered in a side-by-side comparison.
  • 11:20 - 11:40 AM – " The Chemistry Of Water Tree Rejuvenation”, by Wayne J. Chatterton, Ph.D., Utilx Corporation
    Abstract: The oxidation and electrochemical degradation of Polyethylene insulation in high voltage electrical cables leads to water trees and ultimately failure of the cable. This presentation describes this failure mechanism and the chemistry of the popular siloxane water tree rejuvenation fluids. Hydrolysis, dimerization, oligomerization, treatment diffusion and polymer end capping will be discussed. Analytical methods to follow treatment progress will also be addressed.

  • 11:40 AM - 12:00 PM – "Design and Use of Cables With Large Insulated Wires Milliken Conductors.", by Pierre Mirebeau, D. Dubois, Nexans
     

    Abstract: These last years the power that needs to be transported by underground power cables has increased significantly. As a consequence, large cross section conductors, up to 2500mm² are now customarily used. The AC resistance of these large cross sections is out of the scope of IEC 60287 which is commonly used for cable design and rating. CIGRE has set up a working group WG B1-03 to complete the work of IEC 60287. CIGRE WG report "large conductor cross section and composite screen design" was published in 2005. The authors will remind shortly the results of the CIGRE work and compare it with their own measurements. Then advantages and limitations of the cable designs that include insulated wires Milliken conductors will be discussed : cable weight - ampacity - delivery length - relative cost per transported MVA - overload capacity - impact on environment.

  • 12:00 - 12:05 PM: Meeting Adjourn John T. Smith III, John T. Nierenberg
• Subcommittee B - Accessories, Tuesday May 8, 2007, 8:00 - 10:00 AM
  • 8:00 - 8:20 AM: Subcommittee Business: Announcements
    1) Scope and Mission of Subcommittee B
    2) New Requirements on Disclosure of Affiliation
    3) Special Meeting Format / Panel Session on Cable Failure Analysis
    4) Update on Status of Standards • Recently approved standards • Open PARS within Sub B
    5) Newly formed Discussion Groups
    6) Next Meeting (Time and Location)

  • 8:20 - 8:45 AM – Accessory Standards Comparison by: Bill Taylor, 3M Corporation
     

    Abstract: This presentation will provide a comparison of international standards, specifically IEEE, IEC and Cenelec, where applicable. The presentation will outline the test requirements for cable accessories contained in each standard and discuss the differences between the standards.
    Biographical Sketch: Bill Taylor received his BSEE from University of Texas Austin in 1975. He has worked in the power industry since that time, spending thirteen years as a power distribution engineer and the past 18 years with 3M as product development engineer.

  • 8:45 - 9:20 AM – Test Procedures and Requirements for Power Cable Accessories according to the IEC Standards by Ernesto Zaccone, Prysmian

    Abstract: The existing IEC standards applicable to power cables accessories are those listed below. Standards 1 through 4 are currently used worldwide, while standards 5 through 7 are rarely used due to the practical obsolescence of these technologies. Standards 5 through 7 are maintained for replacement and/or modification of old, existing circuits.
    1. IEC 60502-4: Power cables with extruded insulation and their accessories for rated voltages from 1 kV (Um = 1,2 kV) up to 30 kV (Um = 36 kV) - Part 4: Test requirements on accessories for cables with rated voltages from 6 kV (Um = 7,2 kV) up to 30 kV (Um = 36 kV).
    2. IEC 61442: Test methods for accessories for power cables with rated voltages from 6 kV (Um = 7,2 kV) up to 30 kV (Um = 36 kV).
    3. IEC 60840: Power cables with extruded insulation and their accessories for rated voltages above 30 kV (Um = 36 kV) up to 150 kV (Um = 170 kV) - Test methods and requirements.
    4. IEC 62067: Power cables with extruded insulation and their accessories for rated voltages above 150 kV (Um = 170 kV) up to 500 kV (Um = 550 kV) - Test methods and requirements.
    5. IEC 60055-1: Paper-insulated metal-sheathed cables for rated voltages up to 18/30 kV (with copper or aluminum conductors and excluding gas-pressure and oil-filled cables) - Part 1: Tests on cables and their accessories.
    6. IEC 60141-1: Tests on oil-filled and gas-pressure cables and their accessories - Part 1: Oil-filled, paper or polypropylene paper laminate insulated, metal-sheathed cables and accessories for alternating voltages up to and including 500 kV.
    7. IEC 60141-2; IEC 60141-3; IEC 60141-4; relating to internal/external gas pressure and to high pressure pipe type still exist, but are no longer used.
    The presentation will focus on standards 1 through 4 that are likely to be of major interest for the attendees, but the existence of the other standards, 5 - 7, will be mentioned without going into many details. For the standards of major interest, the type of accessories that are considered will be described, along with the test procedures and the respective test requirements for each individual case.
    Biographical Sketch: Ernesto Zaccone (ernesto.zaccone@prysmian.com) is currently with the R&I (Research and Innovation) Department of Prysmian Cables and Systems (formerly Pirelli Cables) based in Milano, Italy. He obtained the electro-technical engineering degree in 1969 and during the same year joined the power cable industry, where he has been involved in a number of different activities such as: the high voltage testing laboratories and high voltage cable system design. In particular, he has been involved in the study, the design, and the realization of some major EHV (Extra High Voltage) extruded cable projects. He is the author of several studies on the application and on the impact of EHV cables when integrated into the transmission system. Currently he is involved in some innovative underground cable projects and in international standardization activities. Mr. Zaccone is the Chairman of the CEI CT 20 Italian standardization body for power cables. He is the Co-convenor of the IEC TC20 WG 16, which is responsible for the international standardization of high voltage cables and their accessories. He is author of a number of technical papers, and is an active member of CIGRE and IEEE.

  • 9:20 - 9:30 AM – Educational Moment - How new or alternate cable accessories are investigated for utility approval, by Mike Dyer, Salt River Project
    Abstract: This presentation provides a review of the process used by one utility to determine suitability as an approved supplier of cable accessories, beginning with a review of test reports and concluding with field trial evaluations.
    Biographical Sketch: Michael L. Dyer is an Executive Engineer at SRP responsible for T & D material & methods. He holds a PE in Electrical Engineering for the state of Arizona and is a Voting member of ANSI C2 NESC Sub. 7 on Underground Lines and ANSI C119 on connectors. He is Subcommittee chair of Engineering & Substructures in the Western Underground Committee and an Engineering board member of the National Cable Splicing Certification Board. He is a Voting member of ICC & AEIC and has authored or co-authored various technical papers on related engineering subjects. He graduated from the University of Illinois.
  • 9:30 - 10:00 AM : Subcommittee Business, Closing
    Formation of New Discussion Group:
    Topic: Impact of Filled Strand Conductors on Accessory Connector Performance
    Open discussion on the topic and the need to form such a group.
    Volunteers for Chair and Vice-chair.
• Subcommittee C - Cable Systems, Monday May 7, 2007, 2:00 - 5:30 PM
  • 2:00 - 2:10 pm: Chairman's Opening Remarks by Nagu Srinivas, UtilX Corporation
     

  • 2:10 - 2:45 pm: Laboratory Studies of Service Aged XLPE Power Cables Using Very Low Frequencies by Nigel Hampton, NEETRAC
     

    Medium voltage distribution cables and their accessories form a critical part of the power delivery system. Many of these systems employ insulations that have a relatively low permittivity and low dielectric losses. As the systems age the dielectric properties change such that they provide a very convenient way to monitor the degradation of the system insulation. In the majority of the cases, workers monitor the increase in dielectric loss which can be several orders of magnitude higher than when cables are new. This approach correlates well with the known mechanisms of degradation, namely the ingress of water (high permittivity and losses) and the subsequent growth of water trees. During the last decade, Very Low Frequency (VLF) testing for extruded distribution cables has gained very considerable interest among the North American utilities.

    The research presented here is part of the Cable Diagnostics Focus Initiative Project (CDFI) launched in February 2005 by the Georgia Institute of Technology through the National Electric Energy Testing Research and Applications Center (NEETRAC). The CDFI project participants include utilities, cable diagnostic providers, cable manufacturers, and other interested parties as the U.S. Department of Energy (DOE).

    This presentation will discuss a number of findings that have practical importance when making these measurements at VLF on service aged cables, particularly dissipation factor (Tan δ) measurements. The discussion is based on data collected from laboratory experiments and field testing of MV cables. The issues to be discussed will include:

    x    Measurements at selected voltages and time sequences on service aged and un aged cables

    x    Comparison of these data with other global studies

    x    The relationship of the measured Tan d to the breakdown strengths under VLF conditions

    x    Comparison with in situ Tan d measurements of very long lengths of cables in similar conditions

  • 2:45 - 3:10 pm: Maintenance for HV Cables Systems; by Willem Boone, Kema
     

    CIGRE WG B1-04 prepared a report on maintenance, dealing with the different aspects of maintenance. The report considers the following main questions:

    • What maintenance practices are being applied at present, to be distinguished in corrective maintenance actions (to repair after failure) and predictive maintenance (to avoid a failure in service)

    • What are the causes of failure for cables and accessories

    • How can potential failures be detected by proper maintenance actions

    • What guidelines can be given to make maintenance more effective and more efficient

    In the framework of a cooperation between CIGRE and ICC the report, in particular the answers on the questions mentioned above, will be explained in a summarized presentation.

  • 3:10 - 3:25 pm: Break
  • 3:25 - 3:55 pm: Final Report of a Winter 138 kV Transmission Installation Project in Wyoming by Henry Soleski & Robert Fleming, Kerite
    Abstract: At the spring 2006 meeting a presentation was made on the ongoing effort required to relocate a critical overhead 115kV feeder serving the Jackson, Wyoming underground. This would allow for land development and construction of a golf course. The project has several unique and interesting constraints. The section of line to be buried is accessible only by an historical steel frame bridge with low weight, height and width limitations. The potential for bald eagles to nest in the area impose restrictions on where and when work can be done. In addition, due to an aggressive project schedule the duct bank construction and cable installation is taking place in the winter with subfreezing temperatures. This has resulted in some loss productivity and special handling of the cable and installation equipment. This is the final report.
  • 3:55 - 4:25 pm: The Case for Defect Specific Diagnostics: Maximizing the Return on Your Cable Assets by Ben Lanz, IMCORP
    Abstract: Several market dynamics are causing utilities to review their current cable rehabilitation practices. These dynamics include rising costs such as fuel and raw materials, which are accelerated by increased demand from developing countries, assets operating beyond their projected life, an increase demand for electric power, and a limited cable manufacturing capacity. As these dynamics converge, the risk of a public backlash is real if alternative methods of dealing with these challenges are not adopted. This presentation will examine the economic impact resulting from common cable test alternatives used to determine the optimum approach to the mounting challenge. This will be accomplished using an economic model which compares both the financial impact and anticipated system reliability as a function of the diagnostic method used. This approach uses a combination of traditional economic analysis and actual field data collected over the past seven years. The analysis is a tool which can assist a utility in developing the optimum strategy which balances planned investment and desired system reliability improvement.

  • 4:25 - 4:55 pm: Advanced Diagnosis of High Voltage Power Cables by Ed Gulski, Delft University of Technology
     

    The HV cable systems are strategic assets and they are very reliable. In particular, as result of the relative small number of components and the historical good quality and proper maintenance in the past of the network, the failures in the HV network are not occurring as often as in MV networks.

    Similar to other HV components the average service age of transmission power cable networks is between 30-45 years and that no or limited knowledge exists about such future performances as: insulation degradation processes, operation reliability and maintenance /replacement expectations. Moreover, it is known that HV power cable failure can occur as a result of the normally applied operational voltage or due to transient voltages or switching surges.

    Therefore, performing non-destructive on-site diagnostics could be relevant to determine the actual condition of the cable systems and to determine the future performances. In particular, actual knowledge of the insulation condition of HV cable systems would be of importance

    -          to evaluate overall condition of the power network condition,

    -          to be able to estimate the reliability of the power network,

    -          to set up maintenance/replacement schedule.

    In this contribution based on investigations on HV cable systems up to 150kV in the Netherlands, the results of on-site application of advanced condition assessment techniques are presented.

  • 4:55 - 5:25 pm: Underground Distribution Reliability: The 5 Ps by Glen J. Bertini, Novinium, Inc
    Abstract: Reconciling the financial considerations of the underground distribution circuit owner with the reliability needs of its customers has traditionally been viewed as a zero-sum-game with the circuit owner on one side and the electrical customer and the regulator on the other. This paper introduces a hierarchy of needs which allows an appropriate balance to be optimized and sustained … maximum reliability with the highest capital efficiency. Various strategic and tactical options may be viewed through the prism of the hierarchy of the 5•Ps (i.e. 5 cable populations: post-failure, problematic, preemptive, proactive, and preventative). A simple net present value (NPV) analysis is overlaid on the 5•Ps and quickly leads the circuit owner to the optimum strategic and tactical choices. Data from field experience provides validation of the models employed and benchmarks for the circuit owner to compare their own strategies and tactics.
  • 5:25 - 5:30 pm: Vice-Chairman’s Closing Remarks. by Ted Nishioka, APS
• Subcommittee D - Station, Control and Utilization Cables, Monday May 7, 2007, 9:30 AM - 12:30 PM
• • 9:30 - 9:45 pm: Subcommiteee D Introduction
     
  • 9:45 - 10:15 AM: Global Fire Performance and Environmental Trends for Wire and Cable by Dave Kiddoo (AlphaGary Corp)
    Abstract: Keeping up with the trends and standards in fire safety and environmental impacts for the wire and cable design engineer is a difficult if not demanding job.  Different regions of the world are taking different approaches, impacting the Cable Design Engineer’s ability to comply with all code and standard requirements and at the same time provide the appropriate balance of electrical and mechanical properties to yield a cable that meets the customer’s satisfaction.  This presentation will put into perspective the evolving trends and requirements in different regions of the world for fire performance and environmental compliance requirements.  Different material options, such as PVC, fluoropolymers, and halogen free compounds will be discussed in regard to their pros and cons to yield properties desired by the customer.
  • 10:15 - 10:30 AM: Break
  • 10:30 - 11:30 AM: Overview of Cables Used for Variable Speed Drive Applications by Eric Bulington (Belden Wire & Cable)
    Abstract: This presentation will provide an overview of the technical issues relating to the proper selection of cable and lead wires for use with Variable Speed Drives (VSDs) to minimize the effect of electromagnetic interference on nearby equipment and adjacent systems. The design of both current and previous generation variable frequency drives produced varying harmonics which require special considerations to obtain reliable system operation and long cable life.
    The presentation will examine the critical parameters of the cable and how changes to these parameters can affect surrounding electronic equipment. In addition the presentation will address the impact of codes and regulatory requirements on different cable designs for VSD applications, and address how various cable designs impact the installation and operating environment.
  • 11:30 - 11:50 AM: IEEE 383 Future Issues Presenter: Robert Konnik of Rockbestos-Surprenant Cable Corp
    Abstract: Review of cable issues related to equipment qualification from a historical perspective with a look at current issues and possible new reactor issues. Some issues to be discussed include the current issue of long term effects of moisture on cable, new reactor use of communication circuits, and high beta effects on jackets. This presentation is meant to provoke thought and identify questions that can be used as input to the next revision of IEEE Standard 383.
  • 11:50 AM - 12:10 PM: A New Condition Monitoring Method for Wire and Cable by Ken Watkins (Polymer Aging Concepts, Inc.)
    Abstract: This presentation will introduced a simple, low cost method for surveying the condition of wire and cable in utility and industrial plant applications. The sensors, co-extruded with, or attached to, wire and cable respond to insulation degradation by changing electrical resistance. Accelerated aging and Arrhenius methodology provide correlation of sensor resistance with present degraded state of the insulation. Simple readers provide go, no-go status with minimal operator training. The technology was developed under a Dept. of Energy Small Business Innovation Research (SBIR) grant and is presented by Polymer Aging Concept, Inc. of Dahlonega, GA.
  • 12;10 - 12:30 PM: Cable Ampacity of a Motor Feeder by Dhiren Savdharia, SONGS
    Abstract: Based on industry standards, it is a common practice to ensure that the cable ampacity of a motor feeder is greater than 125% of rated motor current.  However, standards do not define the basis for this application factor.  In some cases, this number, 1.25, could be either overly conservative or not achievable.  The presentation describes a semiautomatic process which calculates the cable ampacity in the worst case raceway configuration and compares the calculated worst case current with cable ampacity.  The automated calculation process considers four variables: available voltage at motor terminal, load BHP, rated motor current, and service factor.
• Transnational Luncheon
  • " Turnkey Projects in Qatar " by David Dubois, Nexans.
    Abstract: In October 2005 Nexans was awarded two turnkey contracts by Kahramaa (Qatar General Electricity & Water Corporation), one rated 66 kV and the other 220kV. Both projects include several power interconnections for the urbanized area of Doha. Carrying out these two projects simultaneously required a strong local organization. Many road crossings and other crossing have been implemented, using various techniques. Thermal design of the links has been achieved using finite element method calculations as well as other traditional methods. The projects are now approaching the commissioning phase
  • " Large HVDC Sumarine Cable Projects " by Johan Karlstrand, ABB.
    Abstract: The presentation will give a brief survey of some large HVDC Submarine Cable Projects recently implemented or which are under construction in Europe. Both HVDC classic (MI-cables) and HVDC-Light technologies will be covered.
  • " Land and Submarine Thermal Survey of the Saudi-Bahrain Link " by Deepak Parmar, Geotherm Inc.
    Abstract: A thermal survey of the land and submarine routes of the proposed link between Saudi Arabia and Bahrain was conducted. The 400 kV cable route is approximately 80 km (50 miles) long . For the land sections, in-situ TR testing and soil sampling was conducted in test pits. For the HDD crossings, a conventional soil drill-rig was used for the geotechnical investigation. Soil and rock core samples from depths in excess of 2m (6-ft) were tested in the lab. For the submarine sections, sampling and in-situ TR testing was conducted using a 6m (20-ft) vibracore. Several rock-core samples were also tested in the lab.
  • " Thermo-Mechanical Behavior of Cable with a Prefabricated Composite Joint " by Masaru Watanabe, J-Power Systems Corp.
    Abstract: When an existing SCFF cable is replaced with XLPE cable, the bending radius of the XLPE cable in the existing manhole becomes smaller than the existing SCFF cable because of greater expansion, which may have a negative impact on the prefabricated composite joint. Several evaluation tests including a long-term heating cycle test were made to confirm that the surface pressure can be kept within the recommended range and the insulation performance can be maintained although the cable expands and contracts under severe conditions.
• Educational Program - Cable Ampacity
  • 1:00 - 1:40 PM: General introduction to cable ampacity (heat transfer equations, standards, software tools etc.) by Rusty Bascom, Power Delivery Consultants Inc.
  • 1:40 - 2:20 PM: Real time dynamic Rating – Case study by Tony Ernst USi Power
  • 2:20 - 3:00 PM: Ampacity Calculations: Most Frequently asked questions (physical understanding of concepts, validity, scopes and limitation of standards, cases not covered by standards, ampacity enhancements) by Francisco de Leon CYME International
  • 3:00 - 3:15 PM: Coffee Break
  • 3:15 - 3:55 PM: Rating under special installation conditions and Uprating of existing cables by George Anders Kinectrics
  • 3:55 - 4:35 PM: External Thermal Environment of U/G Cables - Importance, Investigation techniques (field & laboratory), application of the findings, case studies. by Deepak Parmar Geotherm Inc.
  • 4:35 - 5:00 PM: Wrap Up Discussion

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