Pdf condition based maintenance on mv cable circuits as part of. The test sets transmitter forces ac current to flow through the neutral, and the conducting earth surrounding the damaged section acts as an electrical jumper. This relatively new approach to maintenance uses data drawn during operations andor maintenance intervals to forecast the need for additional or future maintenance. Therefore, in this paper, based on ug developing objectoriented technology, the research develops the 3d pipe layout system catering to the users, makes up the deficiency of the pipe layout modules of ug, and realizes the function of the automation of laying pipe. Neoprene, which is often used as nonmetallic cable sheaths, is unsuitable in many locations. Condition based maintenance on mv cable circuits as part.
Cbm conditionbased maintenance solutions are increasingly present in industrial systems due to two main circumstances. Method statement for installation of high voltage hv. No metallic sheath required xlpe cable does not generally demand a metallic sheath. Continuous improvement is a process based on imais kaizen approach in which small incremental improvements are as important and often more effective than radical changes. General cable is the leading manufacturer of wire and cable solutions in the world. Cable control systems require more maintenance than rigid linkage systems. Demands for reliable power causes a growing tendency to apply different strategies in the form of condition based maintenance. Why should vlf be used for testing of mv underground cables. It does not work well to create a pipeline satisfying certain constraints. Employ cable slippers or rollers to ensure no sheath damage when hauling into and out of enclosures. On condition maintenance is based on using realtime data to prioritise and optimise maintenance resources. The ae technique of partial discharge detection can be applied as a test method for preventive or predictive maintenance conditionbased maintenance to. Maintenance manual chapter 9 electrical system maintenance. Earth conductor shall be laid parallel along with cables.
Maintain sufficient cable length allowance for jointing. No wires will be drawn through unless conduit and trunking installations have been completed and inspected and cleaned. This guide covers copper and aluminum conductors from no. The cable connection 52 heppner drive carson city, nv 89706 8008512961 775 8851443 fax 775 8852734 email. The fluke networks scanner is capable of performing all the tests mentioned above in section 3. Condition based maintenance cbm is an important part of asset management in a liberalised market place for electric energy. Mobile monitoring of underground cable systems uw electrical. After downloading the firmware, you need to load the file to your router to improve its functionality. This process will determine the asset health, and act only when maintenance is.
Conditionbased maintenance cbm is becoming increasingly important due to the development of advanced sensor and information technology, which facilitates the remote collection of condition data. To reduce the high setup cost of maintenance, a joint maintenance interval is introduced. We propose a new cbm policy for multicomponent systems with continuous stochastic deteriorations. Chapter 4 computerized maintenance management system. The development of high voltage xlpe cable systems goes back to the since then production and material technology have improved significantly, providing reliable and maintenancefree products to the utility industry. With significant challenges facing the electric industry and the world, we are always seeking top talent with handson experience to address issues as they relate to the generation, delivery, use, management and environmental responsibility of global electricity. Capital and labor cost tracking by component as well as shortest, median, and longest times to close a. Continuous improvement maintenance management system. Standard for the inspection, testing, and maintenance of. Medium voltage cable diagnostics condition based maintenance on power cables nico van schaik, e. The pat2spat3s tool can be mounted to the patsbm benchmount to perform handsfree, foot pedal actuation of the pat2spat3s system. Page 1 page 2 page 3 important information about this manual page 4 occupant restraint systems page 5 page 6 maintenance schedule page 7 driving tips page 8 table of contents page 9 page 10 operation of instruments and controls page 11 instrument panel overview page 12 page page 14 page 15 instrument cluster overview page 16. Read the value from the 0minute mark on the indicator to the closest alignment, which, in this example, is 10 minutes. Seal and secure cable and complete all documentation.
Condition based maintenance optimization for multi. Broken wires are most apt to occur in lengths of cable that pass over pulleys or through fairleads. A well established and effective cbm program can eliminate unnecessary maintenance actions, lower maintenance costs, reduce system downtime and minimize unexpected catastrophic failures. Lubricate cable and haul evenly at correct tension to reduce risk of cable damage. Ieee guide for the design and installation of cable systems in substations 2. The sand bed protects the cable from the moisture from the ground. Add 3 degrees 30 minutes and 10 minutes to get the true indication of 3 degrees 40 minutes up travel. This material frequently absorbs excessive amounts of water which may penetrate through to the insulation. This modal can be closed by pressing the escape key or activating the close button. The technical committee on inspection, testing, and maintenance of waterbased protection systems notes the following errors in the 2017 edition of nfpa 25, standard for the inspection, testing, and maintenance of waterbased fire protection systems. Online pd detection on high voltage underground power cables by. Implementation of conditionbased maintenance for medium.
High voltage xlpe cable systems technical user guide. The role of cmms 2 measuring the process to evaluate the success of maintenance processes and your implementation as a whole, key performance indicators kpis need to be defined. Although this guide includes specific recommendations, it is impossible to cover all possible design, installation, and operating situations for every application. Computerized maintenance management systems realtime reports of ongoing work activity. Cables shall be dressed properly,secure cables to cable tray using cleats where the cable is fixed to a vertical cable tray or ties where the cable tray surface is horizontal without any overlapping and it will be ensured that the cable distance is maintained as per approved shop drawing.
Toyota land cruiser prado owners manual pdf download. Check wiring methods for spacing from edges of framing and for protection from nails and screws. Power quality trends in the transition to carbonfree electrical energy systems. Nonmetallic sheaths should be flexible, moisture repellent, and long lasting. Introduction to piping engineering by gerald may, p. When multiple cables are to be laid in the same trench, a horizontal or verticle spacing of about 30 cm is provided to reduce the effect of mutual heating.
By using of fluke networks dsp4000 scanner, usa made, is used to test the connectivity of each cable link. The discussion is focused on transmission cables but also has relevance for distribution cable applications. Conditionbased maintenance cbm is an effective maintenance approach to prioritize and optimize maintenance resources based on condition monitoring information. On conditionbased maintenance is they key to maintain the correct equipment at the right time. Wiring will only be carried out after the conduit installations and plaster work is completed.
Minimum trench width will depend on site conditions and embedment materials. The kpis will allow your team to identify and further optimize the business processes, determine training requirements and quantify the return on investment. Chapter 7 underground installation of pe piping 267 figure 1 pipe trench note. This modal can be closed by pressing the escape key or activating the. Commission relating to cable systems contained in subpart k of part 76 of the fccs. Each mode of operation that was affected by alignment or malfunction and subsequent repair action must be operationally checked, and the success of the checkouts verified. Ugbased research and development of 3d pipe layout system. Condition based maintenance and the use of condition based maintenance systems ensures that the condition of an item is always monitored and alarm limits can be programmed or specified to alert. Where single core pvc insulated wires are enclosed within the conduit and trunking, care will be taken that no damage will occur to the wires during their installation. Limited warranty the initial hardware and software of all key voice technologies, inc. Free from height limitation and maintenance xlpe cable can be installed anywhere without special consideration of the route profile height limitations since it does not contain oil and thus is free from failures due to oil migration in oilfilled cables. When groundwater levels are expected to reach above the pipe, the secondary initial backfill should be a continuation of the primary initial backfill in order to provide optimum pipe support. Check insulation values where conductors of different systems share common enclosures.
The intent of periodic maintenance is to keep the system operating at an acceptable level of service to the public. A conditionbased maintenance policy for multicomponent systems with a high maintenance setup cost. Condition based maintenance cbm offers the promise of enhancing the effectiveness of maintenance programs in a way that no other single concept has ever matched. Mechanical governors for hydroelectric units facilities, instructions, standards, and techniques 5. Epri is at the center of a quickly evolving energy landscape. Chapter 9 electrical system maintenance general all electrical systems require periodic maintenance in addition to nonscheduled maintenance caused by unpredictable events such as storms, accidents, and equipment failure. Predictive conditionbased maintenance in predictive maintenance, machinery conditions are periodically monitored and this enables the maintenance crews to take timely actions, such as machine adjustment, repair or overhaul it makes use of human sense and other sensitive instruments, such as audio gauge, vibration analyzer, amplitude meter.
A twoway cable analyzer is used to test each cable link. Mobile monitoring of underground cable systems azslide. This report is available for downloading from the pserc website. Introduction increasingly, utilities, developers and power.
Cables must be kept clean and inspected periodically for broken wires, corrosion, kinking, and excessive wear. Results of the condition assessment are input for the. Details of the construction of the cables and major accessories for each of these cable systems. A conditionbased maintenance policy for multicomponent. Pdf condition based maintenance systemsan investigation. A conditionbased maintenance policy for multicomponent systems with a high maintenance setup cost citation for published version apa. The aging of power cables begins long before the cable actually fails. A novel approach for prioritizing maintenance of underground cables. For instructions on how to update the firmware of your linksys router using the classic webbased setup page. Check for insulating bushings or grommets where nm cable is. Ieee guide for the design and installation of cable. The transmission lines would be very expensive, so high voltages are used thousands of volts to transmit from the generating plants, with relatively thin wires. For service aged medium voltage cable circuits it is realised by means of cable diagnostics as part of the condition assessment of the underground cable network. In overhead power lines, a structure based network is used to transmit.
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