You will not be disappointed, i promise. Our interactions and communication throughout our project were flawless. Our prices are low as compared to that offered by our competitors, as we understand that small business may have limited budgets, but we believe that even they should have the opportunity to get a professionally designed logo which meets their budget. The electrical phase characteristics associated with the transformers primary side is 3-phase, 3-wire or Delta connected. Some applications require a reduced sound level, such as a large unit in a commercial building with people working close to it. Are there transmission right-of-way uses that are prohibited? Oil-filled transformers are constructed with the windings encased in an oil-tight tank filled with insulating mineral oil. Access to the Contractor Portal requires username and The secondary is 3-phase, 4-wire or Wye connected. Duke Energy Carolinas Distribution Construction Standards Reference Guide The Duke Energy Carolinas Distribution Construction Standards consist of the following documents available on These cookies ensure basic functionalities and security features of the website, anonymously. All Duke Energy transmission structure numbers are typically located three-quarters of the way up the pole or on one of the legs of the tower. The greater the differences in these parameters, the greater the magnitude of the circulating current. The majority of our pruning and cutting occurs during planned maintenance. The magnitude of the voltages shown (line-to-ground and line-to-line) should be very similar. This material will provide additional general guidelines for installing and testing both dry-type and liquid-filled transformers for placement into service. With the exception of emergency situations, we attempt to ask permission of the property owner before taking down trees in maintained or landscaped areas. Our new online service request capability walks you through the process, auto-populates saved information from your profile, and gives you more control over when and This does not apply to bottom ventilation openings. The average temperature of the cooling air during a 24-hour period is 86 F. The temperature of the cooling air at no time exceeds 104 F. Selecting Transformer selection starts with the kVA rating required to supply the loads connected in the electrical system. They have proactively gone above and beyond to do an exceptional job with everything. We also use third-party cookies that help us analyze and understand how you use this website. There are different ways in which transformers are installed and used as part of a commercial building electrical system. These provisions will vary depending upon the weight, size, and mechanical configuration of the unit. Pruning trees around power lines should only be attempted by qualified professionals. A point of contact will be provided should you have questions or concerns about the upcoming vegetation work. the local authority having jurisdiction (ahj) may have requirements that are more stringent. Although there are no moving parts in a transformer, the core does generate sound. You take your choice; extra safety and extra cost or regular-sized cables. (Most of the information in these standards also can be applied to liquid-filled transformers.). <>/ExtGState<>/XObject<>/ProcSet[/PDF/Text/ImageB/ImageC/ImageI] >>/MediaBox[ 0 0 612 792] /Contents 4 0 R/Group<>/Tabs/S/StructParents 0>> You also have the option to opt-out of these cookies. Your Satisfaction is Guaranteed! However, they do protect the transformer itself from damage caused by harmonics. Our Professional Package is designed for our small business, or just-starting-out business clients. The difference in impedance should not exceed 7.5%. The electrical size of the transformer load is rated in kVA. You should consider contributing to our CFE Media editorial team and getting the recognition you and your company deserve. Following are some of the transformer types available in the industry along with a few of their characteristics: Ventilated dry-type transformers are ventilated by air, use larger space for clearance, and use different insulating materials to augment the dielectric strength of the air. Can tree species that are compatible with a distribution line right of way be removed during routine maintenance? Our goal is to provide professional logo design at an affordable price. [ILLUSTRATION FOR FIGURE 2 OMITTED]. Duke Energy schedules periodic vegetation maintenance along power lines to minimize outages caused by trees in or near transmission and distribution rights of way. Out of these, the cookies that are categorized as necessary are stored on your browser as they are essential for the working of basic functionalities of the website. system or end user to connect to any of the Duke Energy Midwest transmission systems must be submitted by written Application addressed as follows: Attention: Director, Midwest 2043 0 obj <> endobj We understand how critical a logo is to the success of your business. Transformers are designed with provisions for lifting, jacking, and/or rolling. We offer a 100% Satisfaction Guarantee. I have received many compliments on the work which has been undertaken thus far and have no hesitation in recommending CreateLogoDesign.com to friends and colleagues and will continue to do so. 71 0 obj <>/Filter/FlateDecode/ID[<17271311DD281D44B60DE10DB84FA7A1>]/Index[52 27]/Info 51 0 R/Length 98/Prev 491904/Root 53 0 R/Size 79/Type/XRef/W[1 3 1]>>stream What types of trees and/or plants may be planted near pad-mounted transformers and power lines, and what do I need to consider prior to planting? Dangerous high voltage will be present within the transformer enclosure. 2067 0 obj <>/Filter/FlateDecode/ID[<40F8DD91F560784FAE35A61D83A94C90>]/Index[2043 102]/Info 2042 0 R/Length 116/Prev 852971/Root 2044 0 R/Size 2145/Type/XRef/W[1 3 1]>>stream Great work! %PDF-1.5 % <> Extremely fast turn around, easy to work with, and creative designs - they are simply a fantastic group to work with!! This rating provides the associated power output delivered for a specific period by the loads connected to the transformer on the secondary side of the equipment. Watch Jana's Story. When an act of God (such as lightning, ice storms, high winds, hurricanes, tornadoes) or other natural events cause trees or other vegetation to fall across power lines and damage facilities, we cut the trees and brush so poles and lines can be replaced and re-energized. When viewing transformer product literature, you'll probably find that one manufacturer's units will have differences from that of a competing manufacturer. Tree placement in relation to overhead power lines is critical in order to preserve the natural size, shape and overall integrity of the tree and protect the intent for which it was planted. Blue Lake Rancheria. If this is not the case, deenergize the transformer and contact the manufacturer before proceeding further. Great service. Distribution poles are typically the smaller poles seen following roads or property lines through subdivisions and have connections directly to homes or businesses. The successful operation of a transformer is dependent on proper installation as well as on good design and manufacture. Lifting from the base frame may require the use of a spreader bar to avoid damage to the enclosure panels. The industry trend is to continue building transformers with less core losses, and that comply with Energy Star efficiency requirements. When planning the installation, you should select a location that complies with all safety codes yet does not interfere with the normal movement of personnel, equipment, and material. Can I replace a tree that has been cut down? When selecting a tree or shrub to plant, it is just as important to consider what you plant as it is where you plant. Createlogodesign were fantastic. This tool is a safer and more effective alternative to sending crews on foot to perform backpack spraying in rough and mountainous terrain or hard-to-access areas, while also maintaining effective vegetation management along our power lines. K-rated transformers do not mitigate or eliminate harmonics. Under certain conditions, trees and tree limbs can conduct power if they come in contact with power lines. Why do you apply herbicides via helicopter? Before energizing a 3-phase transformer, you should arrange to monitor the voltages and currents on the low-voltage side. There are instances when a tree must be trimmed or removed without prior notification. Are you sure you want to delete your template? When testing a transformer for sound level, you should recognize that all transformers, when energized, produce an audible noise. YUMPU automatically turns print PDFs into web optimized ePapers that Google loves. It does not store any personal data. He is a registered professional engineer with more than 29 years of experience in electrical engineering, project management, building design, and construction. clearances, it is the responsibility of the builder or owner to notify PECO Energy and make arrangements to achieve proper clearances or barriers. Contact Duke Energy to request a representative to make evaluations of your request. You should use commercially available, properly sized, UL-listed mechanical- or compression-type lugs. Your file is uploaded and ready to be published. Functional cookies help to perform certain functionalities like sharing the content of the website on social media platforms, collect feedbacks, and other third-party features. There are instances when a tree must be trimmed or removed outside of planned maintenance. You have already flagged this document.Thank you, for helping us keep this platform clean.The editors will have a look at it as soon as possible. If the transformer can't be lifted by a crane, it can be skidded or moved on rollers, as shown in Fig. By studying the overall mounting and terminal dimensions, it's possible to plan the installation with an orderly arrangement of connections. If the structure is wooden and 30 to 40 feet tall with or without transformers attached, it is typically a distribution pole. No one should climb trees that are in the vicinity of power lines. hb```7,^ cb'60H6wZ $(|`n`h`` ``{_j j[e13b{@38O=)HpG17hCDC i. Some manufacturers in the industry have extensive data on sounds produced by their transformers, and they usually can determine the sound level for a particular design quite accurately. These considerations should be taken into account, as well as the use of sound absorbing materials on walls (for low frequency sound) and vibration isolation pads under the unit. Duke Energy uses aerial application of herbicides in areas with high brush density and rough terrain and that are hard to access to control trees and other vegetation that can pose power outage threats. ;w]S9 V?O|H?&V+f[^ c#7b0#M>*. Typically, the property owner should make the request. 3 0 obj Such stress could cause a bushing to crack or a connection to fail. Larger units will have provisions for lifting from the base frame or from clamps at the top of the core. What fantastic professionals to work with. endobj 1 A Minimum of 4 Original Drafts for your Logo. endstream endobj 2044 0 obj <>>>/Pages 2032 0 R/StructTreeRoot 707 0 R/Type/Catalog>> endobj 2045 0 obj <>/Font<>/ProcSet[/PDF/Text/ImageC]/XObject<>>>/Rotate 0/StructParents 0/Type/Page>> endobj 2046 0 obj <>stream 78 0 obj <>stream 7. Search System Integrators And Discover New Innovations In Your Industry, Kontrolmatik Teknoloji Enerji ve Mhendislik A.. Are there any special circumstances that would cause Duke Energy to limit tree pruning to less than a specified distance on either side of the right of way centerline? 4 0 obj The loads, which are calculated as part of the building electrical system design phase, are shown in the construction documents respective equipment schedules in VA or kVA. Also, it's a matter of cost. Therefore, it's advisable that you seek guidance on this matter from an engineer knowledgeable in seismic supports and the associated code requirements. xr]U)\8R.Uj;7YU`Kb%%R1C$31WKG~{j2vS}[jtG^_GDo//H$$nwyFwhiDxEMtlf\2*2$:"_]@-X.N)C5Y&`OQDd$7(m\0"z,QJ2 >>}Mz"8u!M k*)["o?\59+7>jy@:5iVwD"AS Any control circuits, if any, should be checked to make sure they function correctly. All rights reserved. endstream endobj startxref Review our, Ralph Baeza, PE, LEED AP, TLC Engineering for Architecture, Miami, Offices codes and standards change, accommodating new work styles, Codes, standards cause health care building design model to shift, Manufacturing and industrial building codes and standards trends, Codes and standards drive trends, changes in data center design, Technology drives K-12 school changes, while meeting codes and standards, Consulting-Specifying Engineer most-viewed codes and standards articles in 2022. 0 Air intake openings in the wall may be necessary or a larger minimum surrounding If trees or limbs have fallen onto power lines, we will dispatch crews to clear the vegetation from power lines and equipment. 1 A Minimum of 4 Original Drafts for your Logo. Exception: Meter socket and current None of our competitors offer this kind of unique service. endstream endobj 53 0 obj <>/Metadata 20 0 R/OpenAction 54 0 R/PageLayout/OneColumn/Pages 50 0 R/StructTreeRoot 32 0 R/Type/Catalog/ViewerPreferences<>>> endobj 54 0 obj <> endobj 55 0 obj <>/Font<>/ProcSet[/PDF/Text/ImageC]/XObject<>>>/Rotate 0/StructParents 0/Tabs/S/Type/Page>> endobj 56 0 obj <>stream If you cannot gradually increase the load, then full load may be applied. Duke Energy contractors have been trained on the proper, safe and environmentally responsible techniques of managing plant growth. All products used by Duke Energy are registered by the Environmental Protection Agency and approved by appropriate state agencies. Envelope Design.. 24 business hours turnaround time on initial logo designs, Unlimited revisions until you are 100% satisfied with the designs, Dedicated team of logo designer for each order, Unsurpassed quality at an unbeatable price, 4design concepts in first set of logo design. If you see a downed line, immediately contact Duke Energy. Equipment operation characteristics will continue to change. Who should trim or cut trees around power lines? The format of the written authorization will depend upon the specific requested use of a Duke Energy right of way. Jana Ganion, Sustainability and Government Affairs Director. Webrequirements. 7. The specific requirements start in 110.26 (A) and refer to "equipment operating at 1000 volts, nominal, or less to ground andlikely to require examination, adjustment, servicing, When the load-side voltage is low, tap connections below 100% of line voltage must be used to raise the load voltage. The MIA South Terminal expansion was designed with about 50 transformers with similar intent as the stadiums but a more diverse group of loads for the 208 Y/120 V 3-phase, 4-wire system, which also included lighting loads, signage, telecommunication, security systems, and other loads part of this building project (Figure 1). %PDF-1.5 % Ensure that all grounding or bonding systems meet NEC and local codes. Till date we have designed more than 5,000 business logos. These procedures are different than rounding of trees over in which limbs are cut at arbitrary points, normally leaving unhealthy stub cuts. Some transformer manufacturers recommend that the cable size be based on an ampacity level of 125% of nameplate rating. We will most definitely return should we have additional needs!! Trees are assessed on a case-by-case basis. Some equipment could have a different torque requirement than shown. Never attempt to check the output voltage at the transformer. With Duke Energys Builder Portal, you have the tools you need to get it done, right at your fingertips. Nonventilated dry-type transformers are similar to the ventilated type but are totally enclosed. You should note, though, that transformers serving large harmonic loads can produce a higher audible noise. This website uses cookies to improve your experience while you navigate through the website. We work diligently to capture the look and feel that you always desired for your logo. 2144 0 obj <>stream 0 Our programs objective is to minimize tree-related power outages in a manner that is consistent with good arboricultural practices. We believe it speaks for itself. Next, connect the load and energize the transformer. This category only includes cookies that ensures basic functionalities and security features of the website. For this test, apply a low-voltage (240V or 480V) to the high-voltage winding and measure the output at the low-voltage winding. Planned maintenance is prioritized by evaluating reliability data, field conditions and other specific information. When a Customer does his own wiring, he will be considered the electrical contractor for the purpose of these requirements. For example, if the transformer is installed in a quiet hallway, a definite hum will be noticed. Two good references to dry-type transformer requirements are ANSI/IEEE C57.12.01-1989, IEEE Standard General Requirements for Dry-Type Distribution and Power Transformers Including Those With Solid Cast and/or Resin-Encapsulated Windings, which addresses general requirements, and C57.12.91-1995, IEEE Test Code for Dry-Type Distribution and Power Transformers, which addresses testing. Small transformers, arguable those below 400kVA, usually don't have extensive testing as they are often installed far downstream in a power system; as such, their importance is not as vital as compared with larger units. They gave us 6 logo ideas to start with. In maintained or landscape settings, our policy is to dispose of any small limbs and brush. Where can recorded transmission easement documents be found? endstream endobj startxref Member Resources. The cookie is set by the GDPR Cookie Consent plugin and is used to store whether or not user has consented to the use of cookies. Web(2) Subsurface horizontal transformer (see Table 5 and Table 6 on Page 6). The foundation should be constructed of reinforced, air entrained concrete having at least 3000 psi compressive strength at 28 days after pouring. thick with chamfered edges on top of the base and footings extending 20 in. The Duke Energy Progress (DEP) Distribution Construction Standards are available on the My Duke Energy Contractor Portal. When placed inside or on top of a building, you must consider structural capabilities because a transformer represents a highly concentrated load. The distance increases with voltage for all voltages equal to or higher than 50,000 volts. They supply the required incoming electrical service to the buildings. https://www.facebook.com/ElectricalConstructionMaintenanceMagazine, https://www.linkedin.com/company/electrical-construction-maintenance/. "7>^P*#e;dEH?7"\']Ec5>\(zx94|aX7NRc6~l}(} We also depend on help from the public. A general approach to determining transformer capacity and selecting the proper rating for the design application is to obtain the calculated design load from the respective electrical schedule and add 20% spare capacity for future load growth to be shown in the equipment schedule, unless otherwise directed by the facility based on design parameters. As stated in the Occupational Safety and Health Authority (OSHA) standards and ANSI Z133, an unqualified person should not work within 10 feet of overhead power lines with voltages below 50,000 volts. This is especially true if bronze or other type material is used for the nuts/bolts. Advertisement cookies are used to provide visitors with relevant ads and marketing campaigns. Only line clearance qualified personnel should perform tree work around or adjacent to power lines and electrical equipment. Therefore, compatible versus incompatible species are subject to removal through mowing. Letterhead and The article in this issue covers installation procedures you should consider to help assure your transformer will function properly and safely, and it's focused on installation practices that are common for both dry-type and liquid-filled transformers. However, if the tree poses a significant reliability risk or cannot be trimmed in a way that provides sufficient clearance until the next scheduled trim cycle while maintaining its health, the tree may be taken down. *[L EgptA80~@GI#Q@hxMGPhMgoQ ] $ k. A transformer is designed to produce a minimum sound level when the connections to primary and secondary terminals are made with flexible connectors, when all transit bolts and shipping braces are loosened so the unit will float on rubber isolation pads, as shown in Fig. Regardless of manufacturer, you should carefully follow these instructions to ensure adequate safety to personnel and equipment. The most common building industry standard ratings are 3, 6, 9, 15, 30, 37.5, 45, 75, 112.5, 150, 225, 300, 500, 750, and 1,000 kVA. For harmonic mitigation, K-rated transformers can be combined with harmonic filters or chokes. But be careful here: Before applying this voltage, check with the manufacturer's manuals. To know about this special offer, please click here. However, after the non-landscaped/unmaintained area is mowed, follow-up herbicide applications are applied to the volunteer, woody vegetation that is incompatible within the rights of way.