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Recommended Practice for Insulation Testing of AC Electric Machinery with High Voltage at Very Low Frequency

contributor authorIEEE - The Institute of Electrical and Electronics Engineers, Inc.
date accessioned2017-09-04T18:24:09Z
date available2017-09-04T18:24:09Z
date copyright40156
date issued2009
identifier otherIFWIQCAAAAAAAAAA.pdf
identifier urihttps://yse.yabesh.ir/std/handle/yse/206533
description abstractThis document describes very low frequency (VLF) testing of ac electric machines. It covers acceptance testing of new machines in the factory or on-site after erection. Also covered is the routine maintenance testing of machines that have been in service. In order to facilitate communication and comparison among investigators, this document recommends that the VLF used be 0.1 Hz ± 10%.
Purpose
The purposes of this recommended practice are as follows:
a) To provide a uniform procedure for testing the stator (armature) insulation of ac electric machines with VLF voltage, in order to obtain consistent results
b) To recommend constants for relating VLF tests to power-frequency and direct-voltage tests to obtain equally effective test levels
c) To describe VLF test equipment and wave shape
d) To define terms that have specific meaning in VLF testing.
languageEnglish
titleIEEE 433num
titleRecommended Practice for Insulation Testing of AC Electric Machinery with High Voltage at Very Low Frequencyen
typestandard
page30
statusActive
treeIEEE - The Institute of Electrical and Electronics Engineers, Inc.:;2009
contenttypefulltext
subject keywordsac electric machine testing
subject keywordsac electric machines
subject keywordsdiagnostic test
subject keywordshigh-potential (hipotential) test
subject keywordsover potential test
subject keywordsproof testing
subject keywordssafety
subject keywordsvery low frequency testing
subject keywordsVLF testing
subject keywordswithstand test


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