The first set of logo ideas were terrific. The transformer is equal to or less than its rated kVA and rated voltage. Watch Jana's Story. The larger pieces of wood are cut to the length of firewood and stacked or consolidated at the edge of the right of way for the property owner's use or disposal. 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. hToSU}W`lq;!%Ya82/>Z%&t-v @4Fi)<4Q#`xn\ H h `eXZ[5baH889j UpuUdb1eFl*]F~`[_(`ul)iYJ:Jg@CzgrD6Dr-'vv(J2wfjA!fn+ZFg,y@)sqUXhgl{/5=9pn*-XGpcNZOZW,V2gTq,g W@01!86)mA3T$+'vrLA{0Q5 /Z5T* `=|pi})q\HO N|QjmGM1efL>kf(LXJ&|k\{11}7{C7zox>/n7E3p:? If you have some doubt as to the load capability of the unit, contact the manufacturer. 0 0 The above simple calculation meets the intent to achieve the normal life expectancy of a transformer, which is based on the following basic conditions: Transformer selection starts with the kVA rating required to supply the loads connected in the electrical system. Blue Lake Rancheria. It's the responsibility of the property owner to maintain the growth of any trees interfering with the lighting pattern. And, each manufacturer will have its own instructions for installing and testing its transformers. Air intake openings in the wall may be necessary or a larger minimum surrounding ^P*#e;dEH?7"\']Ec5>\(zx94|aX7NRc6~l}(} Use of alternate means of fire protection must be approved by the local code enforcement authority. Personnel should be instructed that should any service work be required to the unit, the lines that power the transformer must be opened and appropriate safety locks and tags applied. With Duke Energys Builder Portal, you have the tools you need to get it done, right at your fingertips. ; 3 Then we will refine your Logo until you are 110 % satisfied! You should consider this when planning the unit's installation. For example, trees can grow into the electrical equipment or fall across power lines, causing outages. Once the transformer has been located on its permanent site, a thorough final inspection should be made before any assembly is accomplished and the unit is energized. Only line clearance qualified personnel should perform tree work around or adjacent to power lines and electrical equipment. In addition, to avoid problems, a civil engineer should be consulted for guidance on the above matters. <>/ExtGState<>/XObject<>/ProcSet[/PDF/Text/ImageB/ImageC/ImageI] >>/MediaBox[ 0 0 612 792] /Contents 4 0 R/Group<>/Tabs/S/StructParents 0>> However, they do protect the transformer itself from damage caused by harmonics. Performing this action will revert the following features to their default settings: Hooray! We do UNLIMITED REVISIONS until you are 110% satisfied with your logo. Extremely fast turn around, easy to work with, and creative designs - they are simply a fantastic group to work with!! Other site considerations require closer analysis. 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. 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. For a limited time we are offering our logo design services for $29 only. Typically, the property owner should make the request. Subsequently, covers or panels should be removed and an internal inspection should be made for damage or displacement of parts, loose or broken connections, dirt or foreign material, and for the presence of water or moisture. These cookies will be stored in your browser only with your consent. Great service. This article will continue in subsequent issues of EC&M. Serious injuries, and even fatalities, have occurred when unqualified individuals perform this type of work without the assistance of qualified professionals. You take your choice; extra safety and extra cost or regular-sized cables. Do you have experience and expertise with the topics mentioned in this content? (3) Subway-LB transformer (see Table 8 on Page 7). 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 When testing a transformer for sound level, you should recognize that all transformers, when energized, produce an audible noise. A check sheet should be used to record all items, and verification should be made that these items have been properly accounted for upon completion of work. I have found the after sales service to be as professional as the original work, nothing being too much trouble to ensure that the customer is completely satisfied. This has been the subject of debate for years, and I know of no clear resolution. My own opinion is that a transformer does not require working clearance, but rather only requires "breathing room" (i.e., 6" from any wall). We will most definitely return should we have additional needs!! [ILLUSTRATION FOR FIGURE 2 OMITTED]. Roles and Responsibilities Associated with Clearances, 1 of 8 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. Therefore, a 75 kVA transformer would be selected for this application out of the available standard ratings for a 480 V primary to 208 Y/120 V secondary. The format of the written authorization will depend upon the specific requested use of a Duke Energy right of way. No one should climb trees that are in the vicinity of power lines. hbbd```b``{"@$$)fO8,f`v/~, lb{ 6_DrGH 8Xqf$]v P(9Wl0 v This category only includes cookies that ensures basic functionalities and security features of the website. 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. 52 0 obj <> endobj 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. If trees or tree limbs fall and tear down power lines, the downed power lines may still be energized while in the air or on the ground. 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. Such stress could cause a bushing to crack or a connection to fail. more than ten (10) 600 MCM or smaller conductors per phase, or more than eight (8) [CDATA[// >