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Spring 2000 - Presentations

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

• Special Working Group Activities
• Opening Session
• Subcommittee A
• Subcommittee B
• Subcommittee C
• Subcommittee D
• Transnational Luncheon
• Educational Program

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

• Special Working Group Activities
  • New Working Group in Subcommittee C - Tuesday afternoon, Mohamed Chaaban of IREQ will lead a new AdHoc group on Real Time Rating with Distributed Temperature Monitoring.
  • Working Group C1 - Monday 2:00 pm - Tony Ernst
    • Review comments received with the Reaffirmation Ballot (IEEE Standard was reaffirmed)
    • Cables in Conduit in Air - Effect of Surface Emissivity
  • Working Group C10 - Sunil Pancholi of Potomac Electric Power Company has agreed to take over as chairman of discussion group C10 (Network Manhole Fires, formerly 7-40) and will hold his first meeting, Tuesday afternooon. The first item of business will be to get reorganized since there have been no meetings of this group for over a year. Mr. Pancholi invites all discussion group members and interested parties to attend.
  • Working Group C18 - May 15th, 9:30 to noon, Hans R. Gnerlich and John Densley, IEEE 400.2 Guide for Field Testing of Shielded Power Cable Systems Using Very Low Frequency (VLF) - Important Note: The guide has been posted in the IEEE/ICC ‘Download’ section. Please download your copy for the meeting.
    Agenda:
    • Status Report.
    • Discussion of "Scope" and "Purpose" of Guide.
      • 1.1 Scope - This guide describes very low frequency (VLF) withstand and diagnostic tests and the measurements that are performed in the field on service-aged shielded medium voltage cables with extruded and laminated dielectric insulation. Whenever possible, cable systems are treated in a similar manner to individual cables. Charts are included as an aid in identifying the effectiveness of the VLF test for various cable insulation problems.
      • 1.2 Purpose - This guide is intended to provide troubleshooting and testing personnel with information to test shielded medium voltage cable systems using very low frequency techniques.
    • 3. Miscellaneous.
  • Working Group C20 - May 15th, 3:30 to 5:30pm - Hans Gnerlich and Wolfgang Haverkamp, Guide for Fault Locating on Shielded Power Cable Systems - Important Note: The guide has been posted in the IEEE/ICC ‘Download’ section. Please download your copy for the meeting.
    Agenda:
    • Status Report.
    • Final Preparation of Guide for Balloting.
    • Miscellaneous.
• Opening Session, Monday 8:15 am - Keynote Speaker - The Keynote Speaker for the meeting will be Manuel Lujan Jr., a member of the Public Service Company of New Mexico (PNM) board of directors. Mr. Lujan was a U.S. Congressman representing the State of New Mexico for 22 years and was the Secretary of the Interior under the Bush Administration for 8 years. We look forward to hearing from Mr Lujan.
• Subcommittee A - Cable Construction and Design, Monday
  • 2:00 – 2:10 pm  - Introduction by D. Bogden
  • WG A3: Performance of Extruded Dielectrics, J. Densley, Chairman, Neal Parker,Vice-Chairman
  • 2:10 – 2:30 pm - Attenuating Effect of Shielded Distribution Cables on Switching Transients in Large AC Motors
    Li-Ming Zhou and Steven Boggs, Electrical Insulation Research Center University of Connecticut
    Abstract: Large electric motors are generally connected to switching devices by shielded power cable. Switching devices insulated with vacuum or SF6 can generate transients with rise times in the range of 5 ns. Except for very large motors, the motor impedance is much greater than the cable impedance, which results in substantial reflection of the fast transient at the motor terminals. The voltage across the first turn of the motor is a strong function of the voltage rise time at the motor terminals, and for very short rise times, the uneven voltage distribution can cause turn-to-turn breakdown at the top of the stator winding. This contribution investigates the effect of high frequency cable losses on the voltage across the first turn of the motor. Such losses increase the surge rising time, and reduce the surge magnitude, i.e., reduce substantially the dV/dt at the motor terminals as a result of high frequency cable losses which absorb energy from the fast transient as it propagates from the switching device to the motor. The high frequency loss of shielded power cables vary by about an order of magnitude. Our computations indicate that high-frequency attenuation of the power cable can have a substantial effect on the voltage across the first turn of motor and, in many common circumstances, can protect the motor from such switching transients.
  • 2:30 – 2:50 pm - Failure Diagnosis of TR-XLPE Cables Aged in Water-Filled Tanks
    Evangeline Cometa and Haridoss Sarma AT Plastics
    Abstract: TR-XLPE insulated cables were subjected to fixed time aging in water-filled tanks and the residual breakdown strength measured at predetermined aging periods of up to 600 days. Certain cable specimens failed under test, well before completion of the entire test regime. Microscopic analysis of these cables showed water tree growth at the failure sites. The water tree degradation in samples that lasted up to 600 days aging without any failures, was different from that in cables that failed pre-maturely in this fixed-time aging scheme. The usefulness of accelerated aging tests using water-filled tanks in generating water trees while assessing the insulation degradation response of different TR-XLPE systems is demonstrated.
  • 2:50 – 3:10 pm - Extending the Service Life of Ethylene Propylene Rubber Insulated Cables
    C. Katz and B. Fryszczyn of Cable Technologies Labs., Inc, Mike Walker of Reliant Energy, B. S. Bernstein of EPRI
    Abstract: Data are presented on rehabilitation of black and pink ethylene propylene rubber (EPR) insulated 15 kV cables. The black EPR cables were aged in service in feeder installations at Reliant Energy for 24 years; the pink EPR cables were aged at Cable Technology Laboratories in tanks, under accelerated conditions for 48 months. The results indicate that CableCure XL liquid and dry gas are suitable to significantly increase the ac and impulse voltage breakdown levels of both black and pink EPR cables and thereby prolong their service life. The influence of liquid injection pressures and gas flow rates plus times of application on both types of insulation were explored. No significant change in dissipation factor or volume resistivity was observed. The basic methodology for rehabilitating PE and XLPE insulated cables using liquids and gases was found suitable for rehabilitating cables insulated with black and pink EPR.
  • 3:10 – 3:30 pm Coffee Break
  • 3:30 – 3:50 pm - Analysis of Field Aged Cable Performance - A Suggested Approach to Accelerated Aging Tests
    Jinder Jow Union Carbide Corp.
    Abstract: It is always the goal to determine whether cable performance in an accelerated aging lab test can be correlated with cable performance of cables aged in the field. Two types of field aged cable results are used in this study: cable failure data and retained breakdown strength data. Based on Weibull statistical and root cause analyses of field aged cable performance data, the basic criteria are suggested for use of lab accelerated aged cable data for the prediction of field performance.
  • 3:50 – 4:10 pm - Laboratory Accelerated Testing of Field-Aged Cables
    M. Walton, BICCGeneral
    Abstract: Preliminary analysis of "44" (4Uo - 90°C load cycle) time-to-failure results on field-aged cables from two utilities will be compared to "44" time-to-failure results obtained on these same cables when they were new. HVTT’s (high voltage time tests) were also performed on these field-aged cables and this HVTT data will be compared with the HVTT data that was generated when these cables were new. The "44" accelerated cable life test results indicate a significant reduction in the time-to-failure when comparing field-aged and new cables, but the field-aged HVTT results indicate the cables have retained relatively high breakdown levels. A possible explanation is presented.
  • 4:10 – 4:30 pm - Voltage Transient Measurements During Accelerated Cable Life Testing
    M. Walton, BICCGeneral
    Abstract: Voltage transient measurements are not routinely measured during accelerated cable life testing. Voltage transients were measured with a Drantz 656 Transient Analyzer during several 15 kV cable failures in an accelerated aging test being conducted in the laboratory at 4Uo. The magnitude, polarity, and phase relationship of these impulses to the ac waveform are presented.
  • 4:30 – 4:50 pm - VLF Testing of Underground Cables, Technical Aspects and 10 Years Field Experience
    Henning Oetjen, HDW
    Abstract: VLF testing is being considered to replace DC Hipot testing of XLPE Cables because of the known problem of induced space charges, which can cause premature failures in this type of cable. The paper compares different VLF test technologies and discusses the correlation between field test data and test parameters
• Subcommittee A - Cable Construction and Design, Tuesday
  • 2:00 – 2:10 pm - Introduction - D. Bogden
  • 2:10 – 2:30 pm - New ICEA Standards for Power Cables
    L. Hiivala, Alcatel Canada Wire and Frank LaGase, Rome Cable
    Abstract: The presentation will give a brief description of several new standards for solid-dielectric insulated power cables issued by the Insulated Cable Engineers Association (ICEA). The new standards are written as "application standards" rather than the "insulation material-based standards" of the past and have been updated to reflect the latest conductor constructions, insulations and jacket materials being used to manufacture wires and cables.
  • 2:30 – 2:50 pm - New AEIC Specification for Utility Medium Voltage Cables
    Richie Harp, TXU Electric & Gas
    Abstract: Since the late 60’s, the AEIC has published CS5 (XLPE) and CS6 (EPR) specifications as supplements to the ICEA standards S-66-524 and S-68-516 respectively. These specifications were designed from the utility perspective. With the newly published ICEA standards, a proposed AEIC specification CS8 is a combination of CS5 and CS6 and is in the final stages of being published. This presentation will explain some of the background of the development of the new AEIC cable specification following the "applications standards" format adopted by the ICEA in their standards. It will also explain some of the main differences between the AEIC specifications and the ICEA standards for medium voltage cables.
  • A1: Characteristics of Insulating Materials – B. S. Bernstein, Chairman, Reza Ghafurian, Vice Chairman
  • 2:50 – 3:10 pm - What Happens to Materials Under HVDC?
    R.N. Hampton, F. Chang & S.B. Hobdell, Supertension & Subsea Systems, BICCGeneral UK Cables Ltd, Erith, Kent, UK.
    Abstract: The most important feature of any electrotechnical material is that it can complete its function within the device with the required level of reliability for the whole of the design life. To use materials in DC applications that fulfill these criteria it is essential that three questions can be answered:
    • what is the electrical stress distribution that the materials will experience within the device
    • what are the breakdown strengths of the materials under these stresses and hence the device reliability
    • how does the reliability change through the life of the device as a result of a reduction in the material breakdown strength (ageing) and changes in the electrical stress distribution

    This paper describes the methods that are currently available to measure the important electrical properties of a range of insulants under DC conditions. A description is then provided of how the electrotechnical data can be combined in a coherent manner to enable estimates to be made of the device reliability. Typical data for a range of insulant classes have been extracted from the sources available and are presented here to illustrate the calculations. Areas that require further work are also identified.

  • 3:10 – 3:30 - Coffee Break
  • 3:30 – 3:50 - New Water Tree Retardant Insulation Material - An Up-date.
    Eric Marsden Nova-Borealis
    Data from AEIC Qualification and ACLT testing of a new water tree retardant insulation will be presented.
  • 3:50 – 4:10 pm - Influence of Frequency and of the Number of Field Cycles on Aging Properties of XLPE Cables
    Jean-Pierre Crine, Consultant
    Abstract: It is well known that the electrical properties of polymers vary with the frequency of the applied electric field. We have already shown that water-tree growth in XLPE insulation was highly dependent on frequency. In fact, we suggested that a field-induced fatigue process was responsible for the long term behavior of XLPE aged under various frequencies. In this presentation, we briefly review some results obtained with XLPE cables aged under electrical fields of various frequencies. It will be shown that the endurance is directly related to the number of AC field cycles, which means that accelerated-aging results performed under high frequency can be easily extrapolated to power frequency condition. It will also be shown that the electric strength (measured under impulses and AC voltage) of XLPE cables decreases steadily with the number of applied electric pulses. This is another evidence of the role of fatigue on cable life, especially for cables exposed to many lightning strokes. The practical impact of these observations on the design and interpretation of accelerated aging tests will be addressed.
  • 4:10 – 4:30 pm - Model for the Drop in Impulse Strength of TR-XLPE Cable Insulation During Service
    Steven Boggs, Electrical Insulation Research Center University of Connecticut
    Abstract: TR-XLPE insulation retards water tree growth but does not stop growth. Water tree growth in TR-XLPE insulation can be modeled reasonably well with a simple statistical "mean free path" model in which the tree channel length is determined by the distance at which a tree channel "hits" a water tree retardant molecule in the polymer. For reasonable parameters, such a model predicts water trees which are in the region of 0.5 mm in extent. However the fact that a water tree channel stops extending does not mean that the channel stops growing in radial cross section. What little evidence is available in the literature suggests that a water tree channel might be modeled as a cone. The dielectric time constant of the channel is a strong function of both cross section and water conductivity in the channel. At power frequency, rather small diameter channels may be quite highly polarized; however, at 300 kHz (lightning impulse risetime), only the largest diameter channel(s), at the base of the water tree will be substantially polarized. This has two effects, both of which make the lightning impulse more onerous than power frequency. First, the energy deposited in the water is concentrated in a much smaller volume under impulse conditions than under AC conditions, resulting in a much greater temperature rise and pressure-induced mechanical stresses and second, at power frequency, the large number of (partially) polarized water tree channels can make the water tree look rather large and "dull" whereas under lightning impulse conditions, the water tree may look like a sharp point, that point being the root water tree channel near the electrode which might be in the range of 100 um in extent. These phenomena result in a water tree in TR-XLPE insulation causing a much greater drop in the impulse strength than in the AC strength as the water trees evolve.
  • 4:30 pm - Close of Meeting - D. Bogden
• Subcommittee B - Accessories, Wednesday, 8:00 am - noon
  • New Installation Techniques for Prefabricated Extruded Cable Accessories
    Henk Geene, Pirelli Cables and Systems/Click-FitÒ Systems
    Over the last 20 years many high voltage cable systems have been installed using solid dielectric cables. The fist generation cable accessories were based on the well known installation techniques for paper insulated cables. Taped joints and porcelain terminations filled with insulating oil, have served for many years and have still some years to go. Despite of its merits, these accessories will gradually disappear from the market, due to its long installation times and its need for highly skilled jointers. World-wide, new generation of accessories, characterised by prefabricated and pre-tested components, have been developed and introduced into the market. Although the new generation accessories have proven their competitiveness and superiority in quality, not all benefits have been exploited completely yet. In particular new, clever installation techniques are under development and have been introduced recently. This contribution gives an overview of the different types of prefabricated accessories and its matching installation techniques. On top of this, a new installation technique is presented, based on pug-in Click-Fit contacts for HV and EHV cable systems. Already a considerable number of joints have been installed with Click-Fit plugs prepared inside the factory. Some of recent projects will be discussed. Also the recently introduced dry-type plug-in GIS termination for systems voltage up to 170kV will be a major topic. This termination, the Click-Fit connector, will share the same benefits as the joint, with the Click-Fit plugs already installed inside the factory. With the mentioned techniques for HV cable accessories, combined with clever installation procedures, completely prefabricated cable systems, without any insulating fluids or gasses are feasible, already at this very moment.
  • Panel Session, Evaluation Methods for Terminations Installed in Severe Natural Environments
    Wolfgang Haverkamp, Raychem - Moderator (four or five panelists to be named)
    During the Fall 1999 ICC meeting, discussions were held regarding a possible new section for IEEE 48. That section would address the design and material performance of the HV cable terminations with regard to the environmental condition and performance. Several investigations and merry-go-round tests have demonstrated the difficulty of evaluating environmental realities in a single test program. The panel session will discuss experience with such tests and evaluation methods of terminations being installed under various severe natural environments.
  • The Effect of Increased Testing Voltage on the Quality of the Recommendation for Diagnostic Cable Testing
    Willem Boone, KEMA
    Abstract: Off-line diagnostic testing has next to the obvious disadvantage of taking the cable out of service, the substantial advantage over on-line diagnostic testing, that off-line testing may be carried out at higher voltages than operational voltages. After a brief introduction it will be shown for a number of situations that because of increased testing voltages significant potential failures were found that would not have been found when the testing voltage would have been limited to operational level as in the case of on-line testing. Finally attention will be paid to future developments of on-line testing in relation to monitoring.
  • Diagnostic Testing of 35 kV Cable Systems at Niagara Mohawk Power Corporation - An Update
    Edward A. Horgan, Jr. Niagara Mohawk Power Corporation, and Torben Aabo, Power Cable Consultants.
    Abstract: Niagara Mohawk Power Corporation (NMPC) experienced above average failure rates of several 35 kV PILC cable circuits. The circuits were diagnostic tested in 1998 and again in 2000. The test results will be presented together with the recommendations and the actions to be taken by NMPC.
• Subcommittee C - Cable Systems, Tuesday 8:00 am - noon
  • 8:05 - 8:25 am - Colorado Springs Utilities 115 kV XLPE Cable Transmission Line
    Steve Arndt, Colorado Springs Utilities
    Abstract: Colorado Springs Utilities is currently in the cable installation phase of its 115 kV, Drake-Rampart-Cottonwood Transmission Line. The line is approximately 13 miles long. It is a 5 year long project, which is designed to provide system reliability and provide for load growth in the northwest part of the city. As with most projects of this magnitude, there were many obstacles, including waterways, interstate highway and major street crossings. The general construction was concrete encased conduits, but also included individual directional drills, jack and bore, and two large (36" casing) directional drills. The cable, manufactured by NK Cables, is 1750 kcmil aluminum stranded conductor with 590 mil XLPE insulation. Splices are NK Click-Fits. Colorado Springs Utilities personnel are performing cable pulling and splicing under NK supervision. The expected completion of the project is September 2000.
  • 8:25 - 8:45 am - Service Aged 69 and 115 KV XLPE Cables
    Carlos Katz (CTL) and Walter Zenger (EPRI)
    Abstract: Five 69 kV XLPE cables, 6 to 23 years in service and two old vintage cables from storage plus a 115 kV XLPE cable from service together with a spare cable from the same production, kept in storage, were evaluated. All components of the cables were found to show little signs of deterioration except for ac breakdown. The 69 kV XLPE cable from service has breakdown levels ranging from 10.2 to 18.2 kV/mm, the spare cable 15.0 to 17.7 kV/mm compared to 27.2 kV/mm, the only previously reported value for a new cable. The 115 kV XLPE cable had a breakdown level of 16 kV/mm and the spare 10 kV/mm. The above cables are low-stress cables. Most modern cables operate at higher voltage stresses, taking advantage of cleaner insulations with smoother shields and moisture barriers. Caution is advised in using older, low-stress cables placed in storage.
  • 8:45 - 9:05 am - Central Power and Light 69 KV XLPE Cable Failure and Replacement
    John Cooper, Power Delivery Consultants and Jeffery Quillin, Central Power and Light
    Abstract: Central Power & Light Company installed a 69 kV XLPE transmission cable in 1972 to supply power to the community of Port Aransas, Texas. The 69 kV XLPE cable section of the Seawall to Port Aransas 69 kV transmission line is a dip beneath the Corpus Christi Shipping Channel approximately 2500 feet in length. Approximately 1800 feet of the line were installed in an 8" steel pipe. The cable section of the transmission line operated without incident for approximately 28 years; however, a failure occurred in a direct buried section of the cable in September, 1999. This presentation describes the failure mode of the original 69 kV XLPE cables, temporary repairs to the cable, and subsequent replacement with a 138 kV XLPE cable.
  • 9:05 - 9:25 am - Submarine Cable Rescued with Silicone-Based Fluid
    K. Jenkins, UTILX
    Abstract: Thirty-one years ago, Hancock-Wood Electric Cooperative (HWEC), in North Baltimore, Ohio, U.S., installed two submarine power cables in Lake Erie to connect Kelley’s Island to the town of Lakeside, 3 miles (4.8 km) away on the Ohio shore. These 1/0 three-phase submarine power cables were both 19,200 ft (5.85 km) long. HWEC was concerned that these old water-damaged cables would soon be unable to meet the island’s projected growth load. This made it necessary for HWEC to consider replacing or rejuvenating these cables. The utility chose to rejuvenate these cables with silicone. The silicone rejuvenation technology successfully repaired the water damaged cables and rejuvenated the cables’ water tree defects, enabling the cable to continue to operate without any faults. In 1998, the estimated cost for replacing these cables was approximately US$4 Million. The cost to use the silicone-based fluid rejuvenation technology was only US$600,000.
  • 9:25 - 9:45 am - New Pipe-Type Repair Procedure at ComEd
    Sunny Namkung, ComEd
    Abstract: A unique repair method, never used by ComEd in the past, was done by encapsulating a leaking joint within a larger casing. The conventional accepted practice would be to freeze the pipe and dismantle the existing joint casing with the line deenergized. The 138 kV pipe line pinhole leak repair was performed on an energized line successfully. The on-line repair maintained the availability of the circuit and reduced material and labor costs significantly.
  • 9:45 - 10:05 am - Insulation Condition Assessment of Medium Voltage Power Cables Using PD Detection and Analysis at Oscillating Voltages
    Dr. Edward Gulski, Delft University of Technology / Haefely Test AG, Tettex Instruments Division
    Abstract: A new medium voltage PILC or XLPE power cable network represents a large investment, and it is from economic point of view essential to extend the life time of the medium voltage power cables as much as possible. It is known that with increasing age, the number of faults will increase and the power supply quality might deteriorate. Important symptoms of this degradation process can be related to discharging local insulation imperfections or defects which may occur in particular cable sections or cable accessories: joints, terminations. As a result the following can be concluded:
    
    • 50% of failure in medium voltage power cable networks in related to insulation problems.
    • Insulation problems may have different origins: new cables: joint and termination mounting faults cables in service: degradation of cable insulation, degradation of joints and terminations
    • It is known from the past, that partial discharges are very sensitive symptoms of a presence of insulation problems.
    • The presence of partial discharges can be described by PD inception voltage, PD amplitude and PD phase-resolved patterns.

    Moreover from the point of view of a utility the following goals are important:

    • Sensitive determination of the insulation condition of medium voltage power cables.
    • Without destructive stressing identification of high risk section of a cable circuit.
    • Before failure occurs replacement only of the defective metres.
    • Applicable for after-laying PD testing of polymeric insulated power cables: detection of mounting faults.

    As a result the following requirements can be defined for medium voltage power cable diagnostic tools:

    • Non-destructive for the cable insulation and uses AC voltage stress conditions.
    • Uses standardised quantities.
    • Provides distinction between different types of insulation problems.
    • Provides PD site location: PD mapping.

    It is known, that to obtain a sensitive picture of discharging faults in power cables the PD should be ignited, detected and located at power frequencies which are comparable to operating conditions at 50 or 60 Hz. In this way realistic magnitudes in [pC] and reproducible patterns of discharges in a power cable can be obtained. Therefore different energization methods have been introduced and employed during recent years by. Assuming sensitive detection of critical PD sites occurs by a method most similar to 50 Hz energization conditions, in this presentation PD detection using oscillating wave test method is presented as new PD test procedure of medium voltage PILC and polymeric insulated cables. In particular PD inception conditions, PD magnitudes, PD phase-resolved patterns at different oscillating frequencies (50Hz....500Hz) as well as the PD-location mappings are compared for several insulation defects. In addition, based on systematic field experiences with:

    • PD diagnosis of existing cable systems
    • After-repair testing of a cable system
    • After-laying test of new cable systems general applicability of PD detection at oscillating voltages will be discussed.
  • 10:05 - 10:20 am - Coffee Break
  • 10:20 - 10:40 am - TDR, Arc Reflection, I-Pulse, V-Decay - What's the Difference. 
    Hans R. Gnerlich, Ph.D.  
    Abstract: Many fault locators are experienced in locating short and open circuits on shielded power cables. Proper locating of high resistance or intermittent cable faults, which are the majority of the faults on cables with extruded  dielectric insulation, is considered tedious, inconsistent and time consuming. Therefore, reclosing, re-fusing, burning and thumping at unnecessarily high voltage and energy levels, in order to generate an open or short circuit, are frequently used without consideration of cable and   equipment properties. The danger of activating dormant faults, generating new faults or damaging utility and customer equipment by improper locating methods is not always recognized. This presentation discusses cable fault locating measurements and techniques for very long, armored, submarine or pipe type high and medium voltage cables.  
  • 10:40 - 11:00 am - On Site Assessment of the Insulating Condition in High Voltage Electrical Equipment Using High Voltage at Very Low Frequency
    Martin Baur, BAUR Prüf- und Messtechnik GmbH, Austria
    Abstract: A programmable cable and electrical equipment test and diagnostic system with integrated dissipation factor and partial discharge measurement will be described. This field test system, based on a very low frequency 80 kV HV sinusoidal source includes the first time different diagnostic tools for the assessment of the insualting material condition in one single package. The system is capable to produce an integral assessment of the state and condition of the insulation and on the other hand the detection and location of single defects in the tested equipment on a nondestructive test voltage level. Defects can be measured in their magnitude of partial discharges and located with the time domain reflectometry method. The HV dielectric test, the dissipation factor and partial discharge measurements as diagnostic parameters with phase sensitive evaluation are integrated in one single assessment system.
  • 11:00 - 11:20 am - A New Class of Biodegradable Dielectric Fluids - Update
    Joel B. Kerstein, Shrieve Chemical Products
    Abstract: This presentation is an update of a presentation given at the winter ICC in Florida that described a highly biodegradable dielectric fluid for HPFF and SCLF systems. New data will be presented that further demonstrates the good dielectric properties of the fluid.
  • 11:20 - 11:40 am - NYPA Submarine Cable Cathodic Protection System
    E.C. Bascom, III, Power Delivery Consultants, Inc. Ballston Lake, New York
    Abstract: Reliable power delivery to Long Island, New York will be further enhanced by an impressed current cathodic protection (ICCP) system that has been in operation since June 1999 on the New York Power Authority’s 345kV Long Island Sound self-contained fluid filled (SCFF) submarine cable circuit. A team consisting engineers and scientists joined to address concerns about corrosion on the circuit that was energized in 1992. The team united expertise from the U.S. power cable industry and Russian experience with corrosion protection on Soviet Naval vessels to analyze the cable circuit and develop a novel approach for eliminating the effects of stray electrical currents on NYPA’s cables. A summary of the basis for the system’s implementation and a discussion of the system’s performance in operation will be presented.
  • 11:40 - 12:00 noon - Network Manhole Fires
    Sunil Pancholi, Potomac Electric Power Company
    Abstract: Pepco provides electrical service to Washington DC and 2 Counties in the State of Maryland. Pepco has 640 square miles service area and it serves 700,000 customers. Pepco has significant underground distribution infrastructure, including 92,000 subsurface structures such as manholes, tapholes, equipment holes and transformer vaults. In the 1st Quarter of 2000, a few " manhole cover popping" phenomenon were experienced. A couple of manhole fires were also experienced. The presentation will include Pepco's efforts of conducting proactive inspections of underground distribution infrastructures. Pepco's efforts to determine the potential causes leading to primary and/or secondary fires will also discussed.
• Subcommittee D - Station, Control and Utilization Cables, Monday, 9:30 am - noon
  • 9:30 - 9:45 am - Introduction by Kent W. Brown
  • 9:45 - 10:10 am - Halogenated Vs Low Smoke Halogen Free Cable Performance in Fire Tests
    John Cancelosi, Okonite
    Abstract: This presentation compares and contrasts the performance of halogenated and low smoke halogen-free insulations and jackets. It will review industry requirements for power and control cables, typical flame retardant additives used, and discuss tests used to evaluate relative performance.
  • 10:10 - 10:25 am - Coffee Break
  • 10:25 - 11:05 am - Polyolefin, Nonhalogen, Low Smoke, Flame Retardant, Compounds for the Wire and Cable Industry
    Kurt Bolz, Union Carbide
    Abstract: Around the world, there is a increasing awareness of the safety concerns associated with copious smoke developed during fires. Vision obscuration, toxic gas evolution, and corrosive damage are all nonthermal hazards of fires which, unfortunately, have been repeatedly demonstrated to be even more harmful than the fire itself. Although PVC, CPE, and CSPE, have been widely used materials in flame retardant wire and cable jacketing and insulation, Power Cable specifications now often identify low smoke, low corrosion, and low toxicity properties which can significantly reduce hazards to people and equipment in the event of a fire. Similar requirements also exist in other applications such as military, telecommunications, and electronics sectors. To fulfill these stringent requirements, compound manufactures have developed commercial nonhalogen flame retardant wire and cable compounds that provide an increased level of protection. This discussion reviews the technology, performance evaluation techniques, and current applications and specifications of nonhalogen wire and cable materials.
  • 11:05 - 11:30 am - Qualification of New Heat-Shrink Splices for Nuclear Plant Service
    Frank Fitzgerald, Raychem - Tyco Electronics
    Abstract: The presentation will discuss the requalification process for the Heat Shrinkable cable splice products that is currently underway. Included in this discussion will be:
    • Requalification process from a technical perspective
    • Requalification of an old and non growing product line from a business perspective
    • Expanding the technical performance parameters with additional type testing
    • Compliance and deviations from IEEE 383
    • Status of the reformulation process 
    • Nomenclature Issues
    • EQ questions 
  • 11:30 - 11:55 am - Diversity Testing, Probing the Limits of Tray Ampacity
    Kent W. Brown, TVA
    Abstract: Since the early 1970s, power generating stations have utilized ampacity tables when sizing cables in trays which are based on the premise that no diversity exists. In the last decade, several papers have established the theoretical basis for considering diversity. This presentation will highlight one test program that probed the limits to such theories.

• Transnational Luncheon
  • Welcome and Transnational Activities Summary, Harry Orton, OCEI
  • Calendar of Events and Joint Task Group ICC/CIGRE SC21 Summary, Willem Boone, KEMA
  • Thermal Testing and Soil Sampling for the 180 km, 141 kV DC Transmission Line in South Australia, Deepak Parmar, Geotherm, Inc.
  • HV (>90kV) Lean Cable Designs in Various Countries Around the World, Nigel Hampton, BICC General UK
  • An Overview of Key Technologies in Recent Projects, Atsuhide Jinno, Shinya Asai, Shoji Mashio and Teruaki Kawaguchi, Sumitomo
  • A Novel Stress Grading Technology, Wolfgang Haverkamp, Raychem
  • The Dry Type CLICKFIT Connector, Henke Geene and Rinus Broekmans, Pirelli Cables and Systems.
• Educational Program - Wednesday, 1:00 - 4:00 pm
  • 1:00 - 1:45 pm, - Basic Power Cable Design - Carl C. Landinger, Hendrix Wire & Cable, Abstract: Each component in a power cable has a specific purpose. The application and environment dictate the necessity for, and importance of, each component. The installation, application and environment may place additional demands on one or several components resulting in the need to compromise the primary objective to accommodate the additional demands. This course gives a brief overview of the need and primary objective of each power cable component as well as some of the more common compromises.
  • 1:45-2:45 pm, - Basic Electrical Characteristics, Carl C. Landinger, Hendrix Wire & Cable, Abstract: By definition, power cables are utilized by the application of voltage and current on the cable. The presence of voltage and current are accompanied by separated charges and magnetic fields. These electrical parameters both act upon, and are acted upon by, the cable materials and geometry. This course gives a brief overview of the electrical characteristics of single conductor power cables and an even more limited discussion of the impact of adjacent cables and facilities. At best, the student is made aware of the more important characteristics in order to take them into account when considering the specific case.
  • 2:45-3:00 pm, - Break
  • 3:00-4:00 pm, - Basic Properties of Power Cable Insulations, Bruce S. Bernstein, Electrical Power Research Institute (EPRI), Abstract: The fundamentals of electrical insulation materials employed for wire and cable insulation will be reviewed. This presentation, based on material included at the University of Wisconsin's "Power Cable Engineering " course, reviews the fundamental nature of polyolefins, defines crosslinking, antioxidants, crystallinity, and the role of mineral fillers in polymers; how crosslinking is achieved as well as what it does to the polymer structure and properties will be discussed along with differrences between water and electrical trees.

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