SU723462A1 - Method of testing turn-to-turn insulation of ac machine windings - Google Patents

Method of testing turn-to-turn insulation of ac machine windings Download PDF

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Publication number
SU723462A1
SU723462A1 SU762367881A SU2367881A SU723462A1 SU 723462 A1 SU723462 A1 SU 723462A1 SU 762367881 A SU762367881 A SU 762367881A SU 2367881 A SU2367881 A SU 2367881A SU 723462 A1 SU723462 A1 SU 723462A1
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SU
USSR - Soviet Union
Prior art keywords
windings
parallel
turn
groove
phases
Prior art date
Application number
SU762367881A
Other languages
Russian (ru)
Inventor
Евгений Петрович Бессуднов
Сергей Григорьевич Данилов
Ирина Ивановна Образцова
Original Assignee
Новочеркасский Политехнический Институт Им.Серго Орджоникидзе
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Priority to SU762367881A priority Critical patent/SU723462A1/en
Application granted granted Critical
Publication of SU723462A1 publication Critical patent/SU723462A1/en

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Classifications

    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
    • G01R31/00—Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
    • G01R31/34—Testing dynamo-electric machines
    • G01R31/346—Testing of armature or field windings

Description

(54) СПОСОБ ИСПЫТАНИЯ ВИТКОВОЙ ИЗОЛЯЦИИ ОБМОТОК ЭЛЕКТРИЧЕСКИХ МАШИН ПЕРЕМЕННОГО ТОКА(54) METHOD FOR TESTING THREAD INSULATION OF ELECTRIC WINDOWS OF AC ELECTRIC MACHINES

Испытани  витковой изол ции провод т следующим образомTest coil insulation is carried out as follows

Подсоедин ют все итесть выв.одов трехфаэнЬй обмотки C -CgCTaTopa .1 к. контактной колодке 2, соединенной с с переключателем 3 на три положени , собирающим три I, II и III испытани . Испытательное напр жение от генератора 4 импульсных напр жений подаетс  на переключатель 3. Индукционный датчик 5 с индикатором, закрепленный на штативе б, устанавливают над любьм пазом статора 1 с зазором 2-5 мм, нeoбxoдимы l дл  свободного вращени  датчика 5 в расточке статора 1, После установки датчика 5 над любым пазом статора 1 подают испытательное напр жение последовательно по схе-мам I, II III и ф тксируют показани  датчика с индикатором Если показани  индикатора отличны от нулевых, (или близких к ним) , то в данном пазу статора 1 нет дефектной .катушки, В пазу статора l отсутствует дефектна  катушка и в том случае, если одно из показаний в индикаторе датчика 5 равно нулю.All the power outputs of the three-phase C-CgCTaTopa .1 coil windings are connected. A terminal block 2 connected to switch 3 for three positions, collecting three I, II and III trials. The test voltage from the pulse voltage generator 4 is applied to the switch 3. An induction sensor 5 with an indicator mounted on a tripod b is placed over any slot of the stator 1 with a gap of 2-5 mm, l are free to rotate the sensor 5 in the bore of the stator 1, After installing sensor 5 over any groove of the stator 1, test voltage is applied sequentially according to schemes I, II III and the sensor readings with an indicator are f xed. If the indicator readings are different from zero (or close to them), then this stator 1 slot does not defective oh. coils, In the slot of the stator l there is no defective coil even if one of the indications in the indicator of sensor 5 is zero.

Паз с BHTKOBtJivi замыканием определ етс  по ДВУ1Л минимальным (близким или равным нулю) показани м индикатора из трех его показаний.A groove with a BHTKOBtJivi closure is determined by the TWD1L minimum (close to or equal to zero) indicator readings from its three readings.

Предлагае1.1ый способ испытани  витковой изол ции применим дл  двухслойных обмоток с любым укорочением и числом пазов на полюс и фазу.The proposed 1.1 test method of coil insulation is applicable to two-layer windings with any shortening and number of grooves per pole and phase.

Claims (2)

Формула изобретени Invention Formula Способ испытани  витковой изол ци обмоток злектрических машин переменного тока путем подачи на обмотки относительно корпуса электрической машины импульсного испытательного напр жени  и измерени  магнитной составл кйцей пол  над каждым пазом от основной волны импульсного тока, например , ивдукционннм датчиком с индикатором , о т л и .4 а ю щ и и с   тем, что, с целью повышени  надежности обнаружени  дефектных катушек в трехфазных двухслойных обмотках с параллельныгди ветв ми и укороченнЕФ шагсм, в каждом пазу создают равнозначные электромагнитные услови  путем подачи ихзпытательного напр жени  одновременно на все фазы, которые подключают параллельно к источнику, причем испытани  последов.ательно провод т в трех режимах, отличающихс  различным возможном сочетанием встрено-параллельного включени  фаз обмоток , а дефектную катушку выдел ют по двум минимальньм показани м индикатора в трех режимах испытани . Источники информации, прин тые во внимание при экспертизеTesting method of coil insulation of windings of electrically-powered alternating current machines by applying to the windings relative to the case of an electric machine a pulsed test voltage and measuring the magnetic field over each groove from the main wave of a pulsed current, for example, with an inductive sensor and 4. so that, in order to increase the reliability of the detection of defective coils in three-phase two-layer windings with parallel branches and shortened PAG, in each groove they create equivalent electric magnetic conditions by applying a test voltage simultaneously to all phases that are connected in parallel to the source, the tests being successively carried out in three modes, differing by the various possible combinations of parallel-parallel switching of the phases of the windings, and the defective coil is separated by two minimum indications indicator in three test modes. Sources of information taken into account in the examination 1о Виноградов Н.В. Производство электрических машин, М. Энерги , с. 262-265.1o Vinogradov N.V. Manufacture of electric cars, M. Energie, p. 262-265. 2. Авторское свидетельство СССР № 531103,,кл, G 01 Р 31/12, 1970 (прототип).2. USSR author's certificate No. 531103, class, G 01 R 31/12, 1970 (prototype).
SU762367881A 1976-06-02 1976-06-02 Method of testing turn-to-turn insulation of ac machine windings SU723462A1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
SU762367881A SU723462A1 (en) 1976-06-02 1976-06-02 Method of testing turn-to-turn insulation of ac machine windings

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
SU762367881A SU723462A1 (en) 1976-06-02 1976-06-02 Method of testing turn-to-turn insulation of ac machine windings

Publications (1)

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SU723462A1 true SU723462A1 (en) 1980-03-25

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5500598A (en) * 1991-11-16 1996-03-19 Voltech Instruments Limited Apparatus for testing electrical components which have windings
RU2564695C1 (en) * 2014-07-22 2015-10-10 Евгений Петрович Бессуднов Automatic method of test of turn insulation and accurate detection of stator winding section with turn fault of ac electrical machine

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5500598A (en) * 1991-11-16 1996-03-19 Voltech Instruments Limited Apparatus for testing electrical components which have windings
RU2564695C1 (en) * 2014-07-22 2015-10-10 Евгений Петрович Бессуднов Automatic method of test of turn insulation and accurate detection of stator winding section with turn fault of ac electrical machine

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