Recommended practice for insulation testing 2300 v and above with high direct voltage. Ieee std 432000 revision of ieee std 431974 ieee recommended practice for testing insulation resistance of. Ieee std 43 2000 r2006 revision of ieee std 43 1974 ieee recommended practice for testing insulation resistance of rotating machinery sponsor electric machinery committee of the ieee power engineering society approved 12 october 2000 american national standards institute reaffirmed 30 march 2006 approved 6 march 2000 ieee sa standards board. Ieee guide for insulation maintenance for rotating electric machinery 5 hp to less than 10 000 hp abstract. The ieee recommended practice for testing insulation resistance of with the release of ieee std 432000, new limitations on the use and evaluation of pi. Ieee xplore 43 2000 ieee recommended practice for testing insulation resistance of rotating machinery ieee standard. Vuspec this vuspec collection contains 26 active ieee standards, guides and recommended practices used worldwide pertinent to the generation of electric energy and its conversion into other forms of electric or.
Ieee recommended practice for testing insulation resistance of electric. In particular, it identifies the complexities of performing pi and ir tests and notes their limitations. Ieee std 43 2000 revision of ieee std 43 1974 ieee recommended practice for testing insulation resistance of rotating machinery sponsor electric machinery c ommittee of the ieee power engineering society approved 6 march 2000 ieee sa standards board abstract. Megger a guide to insulation testing above 1 kv datasheet pdf. Ieee std 432000 revision of ieee std 431974 ieee recommended practice for testing insulation resistance. Experience with stator insulation testing iris power. Pdf measurement variations of insulation resistance. Explain how the ieee 43 2000 standard correlates to the mce tester. Pdf ieee std 432000r2006 ieee recommended practice for. Ieee std 1122004, ieee standard test procedure for polyphase. Mar 23, 2000 ieee xplore, delivering full text access to the worlds highest quality technical literature in engineering and technology. The ieee std 43 2000 lists the following minimum values for the polarization index for ac and dc rotating machines.
This document describes the recommended procedure for measuring insulation resis. Contained within this document is the general theory of insulation resistance ir and polarization index p. A standard ir test could be used to accomplish the dc test. Pdf ieee std 432000r2006 ieee recommended practice. Ieee recommended practice for testing insulation resistance of. With the release of ieee std 43 2000, new limitations on the use and evaluation of pi were issued. This document describes the recommended procedure for measuring insulation resistance of armature and field windings in rotating machines rated 1 hp, 750 w or greater. A guide to diagnostic insulation testing above 1 kv. Othere ieee standards that include information on insulation. Whats new in the ieee 43 insulation resistance testing standard. Used in motor current signature analysis as a method of removing the fundamental frequency from current fft spectra. This revision is ieee std 432000, the ieee recommended practice for testing insulation resistance of rotating machinery.
For instance, most new insulation systems start with test results in the gigohm and terraohm billions and trillions of ohms. The guide is intended to apply in general to industrial aircooled machines. In both cases the voltage is increased slowly in about 1 minute or less to the specified hipot test level, and then maintained at that level for one minute. Ieee 43 2000 claims that before any insulation testing can take place, safety24 mar 2000 pdf. Temperature limits vary but generally fall in the range of 90100c for alarm and 105120c for shutdown. Segundos mohms 5 2618 10 4077 15 4911 20 5069 25 5712.
Easa senior technical support specialist the institute of electrical and electronics engineers ieee standard for insulation resistance testing of motor and generator windings that was published in 2002 has been revised. Tm 5694 commissioning of electrical systems for command. No longer is the test easy and straightforward as many changes have occurred with the insulation systems themselves. Ieee recommended practice for testing insulation resistance of rotating machinery. At a, the effect of aging and dust accumulation is shown by decreasing values. It applies to synchronous machines, induction machines, dc machines, and. Understanding insulation resistance testing pdf 0206 rev. Ieee standard 432000 recommends a procedure for measuring insulation resistance of armature and field windings in rotating machines. The quotient of the insulation resistance at time t2 divided by the insulation resistance at time t1. Rotating machines, and other recognized organizations. With the release of ieee std 432000, new limitations on the use and evaluation of pi were issued.
Isbn 0738119253 ss94806 no part of this publication may be reproduced in any form, in an electronic retrieval system or otherwise, without the prior written permission of the publisher. Paul, electrical power equipment maintenance and testing. Motors and drives testing the insulation resistance of rotating. The first change in the new document is a slight change in the title. Other ieee standards that include information on insulation resistance measurement are listed in clause 2.
Sep 19, 2018 the ieee recommended practice for testing insulation resistance of with the release of ieee std 43 2000, new limitations on the use and evaluation of pi. In march 2000, the ieeesa standards board approved a revision to ieee std 431974. Ieee std 11101991 1110 tm eee standards ieee standards. Ieee 432000 claims that before any insulation testing can take place, safety24 mar 2000 pdf. This article will discuss each of the changes referencing directly to ieee std. Pulsating current, measured with an analog current probe, is an indicator of rotor bar problems. Ieee std 1110z2002 revision of ieee std 11101991 i eee standards 1110tm ieee guide for synchronous generator modeling practices and applications in power system stability analyses published by the institute of electrical and electronics engineers, inc. The vlf very low frequency hipot test is performed at 0. Megger mit5155251025 5kv10kv insulation resistance. Measured by rtd, thermocouple or bulbtype thermometer. Ieee std 10152006 blue recommended practice for applying lowvoltage circuit breakers used in industrial and commercial power systems. Testing solid insulation of electrical equipment, december 1991. Penrose is the general manager for the alltest pro division of bjm corp.
In this standard, information necessary to permit an effective evaluation of the insulation systems of medium and small rotating electric machines is presented. Ieee recommended practice for testing insulation resistance of rotating machinery chicago. I eee standards 1110tm ieee guide for synchronous generator modeling practices and applications in power system stability analyses published by the institute of electrical and electronics engineers, inc. Ieee std 432000 revision of ieee std 431974 ieee recommended practice for testing insulation resistance of rotating machinery sponsor electric. When the ieee sa standards board approved a revision of ieee standard 43 1974 by the electric machinery committee of the ieee power engineering society, the document became ieee standard 43 2000, the ieee recommended practice for testing insulation resistance of rotating machinery. Ieee is the worlds largest technical professional organization dedicated to advancing technology for the benefit of humanity. The ieee disclaims any responsibility or liability resulting from the placement and use in the described matter. With this in mind, an impedance based test impedance includes resistance, inductance, capacitance and frequency compared to other test results such as resistance and inductance, could be used as the ac test. The ieee std 432000 lists the following minimum values for the polarization index for ac and dc rotating machines. In particular, this standard describes typical insulation problems. The purpose of this recommended practice is to a define insulation resistance and polarization index testing of the winding of a rotating machine. Ieee std 432000 recommends a procedure for measuring insulation resistance of armature and field windings in rotating machines rated 1 hp, 750 w or greater. Testing the insulation resistance of rotating machinery.
The insulation resistance characteristics of new insulation systems are different from the older systems and therefore revision to the standard for measuring insulation resistance, including polarization index pi, has become imperative. Ieee guide for insulation maintenance for rotating. The purpose of insulation resistance ir reading is to evaluate the condition. The dc voltage tests procedures for the measurement of the insulation resistance and polarization index of insulated stator, and rotor windings and how to interpret the results are described in this recommended practice. It does not apply to fractional horsepower machines. In march 2000, the ieee sa standards board approved a revision to ieee std 431974. Ieee recommended practice for testing insulation resistance of electric machinery redline abstract. After the test is done, a lot of information is available in the form of parameters, all of them giving an. Ieee std 1122004 revision of ieee std 1121996 112tm ieee standard test procedure for polyphase induction motors and generators 3 park avenue, new york, ny 100165997, usa ieee power engineering society sponsored by the electric machinery committee 4 november 2004 print. Measurement is trended and values to ground increasing over time indicate surface. Ieee std 432000 recommends a procedure for measuring insulation resistance of armature and field windings in rotating machines rated 1 hp, 750 w or greater and applies to synchronous machines, induction machines, dc machines and synchronous condensers. The test is repeated at two different and increasing voltages usually 2nd voltage is 2 1st voltage in order to check the linearity of the insulation with voltage. Ieee std 432000, ieee recommended practice for testing insulation resistance of. When the ieeesa standards board approved a revision of ieee standard 431974 by the electric machinery committee of the ieee power engineering society, the document became ieee standard 432000, the ieee recommended practice for testing insulation resistance of rotating machinery this revision underscores the need for upgrading current practices to accommodate changes and.