IEEE Recommended Practice For Testing Insulation Resistance Of Electric Machinery Defines a recommended procedure for measuring insulation. The Institute of Electrical and Electronics Engineers (IEEE) standard for insulation resistance testing of motor and generator windings that was published in Content Description. Revision Standard – Active. The dc voltage tests procedures for the measurement of the insulation resistance and polarization index of.
|Published (Last):||16 July 2014|
|PDF File Size:||7.95 Mb|
|ePub File Size:||5.34 Mb|
|Price:||Free* [*Free Regsitration Required]|
What’s new in the IEEE 43 insulation resistance testing standard?
This time interval is based on the R resistiveL inductiveC geometric capacitiveand absorptive characteristics of the ieer during charging time of the application of the voltage and discharging elapsed time since the removal of the voltage source and subsequent grounding of the winding under test. The strategic plan of IEEE is driven by an envisioned future iieee realizes the full potential of the role IEEE plays in advancing technology for humanity.
The IEEE Brand Identity Toolkit explains the basic usage rules for all corporate identity elements and how to utilize them to create a powerful and consistent communications pieces. IEEE is led by a diverse body 43-22013 elected and appointed volunteer members.
Modern types of filmcoated wire, as well as epoxy-mica or polyester-mica insulated stator windings, may approach a constant value of insulation resistance in 4 4-32013 or less. Get a Quote Careers Exhibitions. The insulation resistance of a rotating machine winding is a function of the type and condition of the insulating materials used, as well as their application technique. The surface leakage current may be significantly higher on large turbine generator rotors and dc machines, which have relatively exposed creepage surfaces.
To find out if ieee leakage current is mainly a current or also contains the more damaging conductance current through the volume of the insulation to ground, one must do a step voltage test or ramp test to a test voltage one is comfortable with given the level of megohms measured. These can only be obtained from the manufacturer of the motor. There were no books found for the keee search filters.
What’s new in the IEEE 43 insulation resistance testing standard? | EASA
Insulation Resistance IR is maybe the most common motor test. FORMAT Single User Subscription Site License Subscription BOOKS All Books PACKAGES All Packages EDITION isee PUBLISHER. Search book title Enter keywords for book title search.
IEEE is led by a diverse body of elected and appointed volunteer members. The governance structure includes boards for operational areas as well as bodies representing members in the 45 Societies and technical Ieee and ten worldwide geographic regions. Usually, for clean and dry rotating machine insulation, the insulation resistance between about 30 s and a few minutes is primarily determined by the absorption current.
Note that these tests can be done to voltages lower than the normal DC Hipot ieee voltages to find out if there is ieee current. The measured insulation resistance will usually rapidly increase when the voltage is first applied, and then gradually approach a relatively constant value as time elapses see Figure 4. For large machines with high capacitance, the inrush current can be high.
After the applied direct voltage is removed, a suitable discharge circuit should be provided see Clause 4. Are you sure you want to empty the cart? Ieee IEEE standards that include information on insulation resistance measurement are listed in Clause 2. The ground insulation certainly can be weak with conduction current flowing through the ieer to ground, but this is often dwarfed by the surface currents. Land Use and Development. There were no books found for the applied search filters.
The dc voltage tests procedures for the measurement of the ieee resistance and polarization index of insulated stator, and rotor windings and how to interpret the results are described in this recommended practice. Are you sure you want to empty the cart? After 1 minute with a random wound DUT, or minutes with a form wound DUT, this is typically the only current remaining unless the insulation is weak ieee dama There may be an increase in the surface leakage current on machines where a stress-control coating has been applied to the end-windings.
IEEE and its members inspire a global community through IEEE’s highly cited publications, conferences, technology standards, and professional and educational activities. There are ieee temperature compensation formulas, and ieee one above may be the most conservative. Poluicao em Isoladores Artigos sobre Poluicao em Isoladores.
The discharge current manifests itself in two components:. The governance structure includes boards for operational areas as well as bodies representing members in the 45 Societies and technical Councils and ten worldwide geographic regions. Enter your personal account email address to request a password reset: Safety considerations Insulation resistance testing involves the application of high direct voltages to machine windings.
By definition, the insulation resistance is the quotient of the applied direct voltage across the insulation divided by the total resultant current at a given time. Register for a trial account. Full Description Scope This document ieee a recommended procedure for measuring insulation resistance ieee armature and field windings in rotating machines rated W or greater.
Who knows, maybe no better at all? Subscribe on standards — Read more. Who knows, maybe no better ifee all? Please login to your authorized staff account to use this feature. IEEE is the world’s largest professional association dedicated to advancing technological innovation and excellence for the benefit of humanity.