Physical size, voltage class, and kva rating are the major factors that dictate the. Insulation class and temperature rise ver pangonilo, pee. It is furnished in custom length rolls and laminated with various facings, designed to meet the buildings interior finish needs. Faced and unfaced fiberglass batts, and rigid foam insulation must be installed so the markings are visible to the building inspector. Understanding isolator standards and certification to meet. I read up about basic insulation levels and to my understanding is that the system from the table for 22 kv should be able to handle 125 kv surge.
Bil or basic insulation level definition table and. Article index for information about insulation used in buildings. Joined merlin gerin in 1986 and is currently in the network research. Basic insulation level synonyms, basic insulation level pronunciation, basic insulation level translation, english dictionary definition of basic insulation level. These flowcharts are provided as a very highlevel overview of the planning and selection process for basement insulation systems. Definition of basic insulation level bil introduction to bil insulation levels are designed to withstand surge voltages, rather than only normal operating voltages. Flame spread and smoke developed ratings are of vital importance.
Concept for sf6free transmission and distribution of electrical energy. So the hotter the wire, the shorter the life expectancy of the insulation and thus the alternator. Board of industry leaders consumer electronics association bil. Clean energy the zipcode insulation program will tell you the most economic insulation level for your new or existing house. Insulation installation achieves resnet grade 1 building. Basic insulation level bil of 2425 kv where conventional surge arresters are employed. For equipment rated at less than 300 kv, it is a statement of the lightning impulse withstand voltage and the short duration power frequency.
Note that these guidelinesand certainly these chartsare not exhaustive. See the compliance tab for related codes and standards requirements, and criteria to meet national programs such as doe. The shear weight of the wall made it rock solidgravity works. It is assumed that a single fault can occur in one layer of insulation. This indian standard part 3 third revision which is identical with iec 600763. Insulation class and temperature rise posted on january 9, 2010 june 22, 20 by ver pangonilo the selection of induction motors designed to match the load requirements of any particular application need to ensure that the temperature inside the motor windings does not rise to a level that exceeds the critical temperature. Insulation levels, dielectric tests and external clearances in air. Basic insulation level article about basic insulation. Find out which building codes are applicable when designing with spray foam insulation. Exterior structural cad detail library this category provides details of coldformed steel framed assemblies used in exterior structural applications. When lightning impulse over voltage appears in the system, it is discharged through surge protecting devices before the equipments of the system get damaged. Before going through details of basic insulation level of an electrical system, lets try to understand basic shape of standard impulse voltage.
There are a myriad of standards and codes relating to both insulation and the broader built environment. The complete guide to electrical insulation testing. Basic insulation level definitionwhen lightning impulse over voltage appears in the system, it is discharged through surge protecting devices before the equipments of the system gets damaged. Electrical installation handbook protection, control and. In other words, if a fault occurs in the basic insulation, the second insulation will still protect the user. Fiber glass installation basics is one of two key pieces in the insulation portion of certainteed s building solutions education program. High altitude effects on basic insulation levels bil. So, of course, we want it to be as comfortable as possible and as affordable as possible to maintain. Faced metal building insulation is designed to fit between the structural steel and sheeting of preengineered and post frame buildings. Insulation works by trapping dead air air that cant circulate between the warm and cold sides of the wall, floor or ceiling. A pdf file is a 7bit ascii file, except for certain elements that.
Insulation values above this level for the lines and equipment in the system must be so coordinated that specific protective devices operate satisfactorily below that minimum level. Bil stands for basic insulation level iec suggest new definition. Raters can serve as energy modelers, building science experts, building products experts, home inspectors, system designers, trainers of the trades, and guarantors of home performance. With a little recordkeeping and common sense, however, you can get a good picture of the insulation condition from values that are only relative. The other piece is fiber glass product knowledge workbook and manual. Power pdf enterprise volume licensing will take your business to a new level. Certainteed fiber glass insulation installation basics. Hence, the insulation of such equipment must be designed to withstand a certain minimum voltage before the lightning impulse over voltage gets discharged. The insulation capability of an item of electrical equipment to withstand specified voltage surges explanation of.
Certainteed technical bulletin building insulation. Which means that the arrestor bracket must have a bil lower than that in order to absorb the surge. High voltage testing can be broadly classified into testing of insulating. This report of the joint committee on coordination of insulation of aiee, edison electric institute, and national electrical manufacturers association is the culmination of more than ten years study to establish basic insulation coordination. From memory, iec standards do not use bil, it does not exist. Significant if application is outdoors and high intensity indoors. Buying guide for energyefficient attic insulation bge home. Overvoltages and insulation coordination in mv and hv studiecd. Insulation types there are a wide variety of insulation materials, facings, and accessory products available for use on mechanical systems. Section 2 insulation materials and properties mp4 l.
Insulating with books the blockhouse school project. Individual test results may vary, therefore this data may not be used for specifications. Current methods and aggregation levels of sf6 monitoring within the framework. Cgit system depends to a large degree on the expected lightning. This information sheets discusses, how different applications influence temperature rise. To help piping system contractors, engineers, and facility operations professionals stay up to date, naima has developed literature detailing pipe insulation codes and standards. The minimum level is known as the basic insulation level bil that must be that of all of the components of a system.
Use the recommended levels of insulation for exterior walls for new house construction. Since 11 kv is an iec standard voltage, not a north american voltage, i presume that the question originates in the iec world, it does not make sense to use the term bil. This definition appears somewhat frequently and is found in the following acronym finder categories. What is the meaning of the basic insulation level bil. Unfaced metal building insulation is designed for use in adding to a. Pipe insulation requirements in residential buildings continued 2012 iecc 2012 iecc, section r403. Install insulation without misalignments, compressions, gaps, or voids along the thermal envelope of the house. The mechanism by which overvoltages within the cable can exceed the protective level of the arresters at the cable terminals is outlined. The list changes continuously as existing products are modified, new products are developed, and other products are phased out. The basic impulse insulation levels refers to the ability of electric equipment such as transformers to withstand lightning surges. Residentialcommercial insulation and systems for thermal. Hence, the insulation of such equipment must be designed to withstand a certain minimum v. Kofax power pdf editable pdf software helps individuals and businesses create editable pdf files, combine, and share with others without subscription fees. Fibrous glass insulated hvac duct systems 4 sheet metal ducts with exterior fibrous glass exterior insulation flexible blanket fibrous glass duct wrap insulation is designed for application to the exteriors of commercial and residential sheet metal heating, ventilating, and airconditioning ducts and plenums operating at temperatures between 40.
Insulation withstand and clearances with exlim and pexlim surge. Choosing the correct bil for your harmonic filter system when calculating bil for electric components used in mining operations, allowances need to be made for the derating effects caused by air conditions at higher altitudes. Their use is recommended also for resonant grounded systems. Exterior structural cad detail library awci technology. Impulse voltage as per american standard the impulse wave shape is 1. The feasibility of a 0 kv basic insulation level bil with respect to lightning surges was assessed for an hvdc compressed gas insulated transmission line.
The parameters of lightning currents are discussed. The document will be updated on a timely basis, to maintain a current reference point to assist in system design, material usage and application practice. Insulation requirements in residential buildings for. Get free shipping on qualified 100 ft, radiant barrier products or buy online pick up in store today in the building materials department. Insulation coordination and surge arrester selection transport for. The level of humidity influences the insulation accord ing to the degree of contamination of the insulating surfaces. Reinforced is required to protect users in case of a single fault of the first basic layer. Studies show that improper installation can cut performance of the insulation by 30% or more.
Basic insulation level for a 22 kv system electrical. Many references are provided that discuss several viable basement systems as well as achieving thermal performance well above code minimums. Provide the recommended level of insulation under floors above unheated spaces, around walls in a heated basement or unventilated crawl space, and on the edges of slabsongrade. Basic insulation is a single level of insulation that provides basic protection against shock. The tiac mechanical insulation best practices guide is made up in different sections, focusing on specific areas of the industry. The megger insulation tester is a small, portable instrument that gives you a direct reading of insulation resistance in ohms or megohms.
By properly insulating and air sealing your home, you can save up to 20% on heating and. If the insulation doesnt come with a vapor barrier preattached, attach a plastic sheet or polyethylene filmover the area. Since the insulation lines and equipment is protected by surge arresters draining the surges rapidly before the insulation is damaged, the arrester must operate below the minimum insulation level that must withstand the surges. Insulation resistance testing guide chauvin arnoux. All ceiling, wall, floor, and slab insulation should achieve grade i level insulation installation criteria as defined by the residential energy services network. Most of us spend the majority of our time in our homes and for those of us who spend the majority of our time at work, we wish we spent more time at home. A sdvosb service disabled veteran owned small business. Basic switching impulse insulation level how is basic. Consult the cable manufacturer for insulation thicknesses. Standard basic impulse insulation levels ieee journals. Attic insulation buying guide insulation is a key factor when trying to get the most out of your energy dollars. A guide to insulated hvac duct systems insulation institute. When lightning strikes a transmission line, a traveling wave is created. Basic insulation level bil tested with lightning impulse 1.
Insulation materials and techniques the key to an effective insulation system is proper installation of quality insulation products. Basic insulation level how is basic insulation level. We opened the books so we could interweave the books for greater stability and more insulating voids. Dec 3, 2012 basic insulation level bil is level designed to withstand surge voltages. Basic insulation level definition of basic insulation level by the free dictionary. Specific emphasis is on the integration of continuous insulation with a mutlitude of exterior finish materials on coldformed steel framing. A house should have a continuous layer of insulation around the entire building envelope. For hers raters the job of a hers rater is not easy and often spans many responsibilities. First, use it to master the information critical to a. Basic insulation level definition of basic insulation. General calculations excerpt from prysmians wire and. Study to determine the basic insulation level requirements. First edition 2003 second edition 2004 third edition 2005 fourth edition 2006 fifth edition 2007 sixth edition 2010 published by abb sace via baioni, 35 24123 bergamo italy.
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