SU105237A1 - Test method for coil insulation of electric machine and transformer windings - Google Patents

Test method for coil insulation of electric machine and transformer windings

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Publication number
SU105237A1
SU105237A1 SU454133A SU454133A SU105237A1 SU 105237 A1 SU105237 A1 SU 105237A1 SU 454133 A SU454133 A SU 454133A SU 454133 A SU454133 A SU 454133A SU 105237 A1 SU105237 A1 SU 105237A1
Authority
SU
USSR - Soviet Union
Prior art keywords
test method
electric machine
winding
transformer windings
coil insulation
Prior art date
Application number
SU454133A
Other languages
Russian (ru)
Inventor
Б.А. Алексеев
Б.В. Ванин
Original Assignee
Б.А. Алексеев
Б.В. Ванин
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Б.А. Алексеев, Б.В. Ванин filed Critical Б.А. Алексеев
Priority to SU454133A priority Critical patent/SU105237A1/en
Application granted granted Critical
Publication of SU105237A1 publication Critical patent/SU105237A1/en

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Description

Известные методы испытани  витксвой изол ции электрических машин в р де случаев оказываютс  неэффективными . Это в особенности относитс  к иснытанию полностью собранных машин. Примен емый Б этом случае способ испытани  при псыоц и бегущей волны напр жени  с крутым фронтом малоэффективен д.1  испыта1- и  изол ции витков в середине и в конце обмотки, так как ( бегущей волны неизбежно сглаживаетс  по мере ее распространени  вдо.ш обмотки, вследствие поглощени  энергии волны при зар дке междувитковой емкости.The known methods for testing the insulation of electrical machines in some cases are ineffective. This is particularly true of the disposal of fully assembled machines. The test method used in this case with psiots and a traveling voltage wave with a steep front is ineffective for test 1 and insulation of turns in the middle and at the end of the winding, since (the traveling wave is inevitably smoothed as it propagates in the winding, due to the absorption of wave energy while charging the inter-turn capacitance.

Предлагаемый способ испытани  ВИТКОВОЙ изол ции за1стючаетс  в том, что к испытуемой обмотке и к корпусу (или к концам обмотки) прикладываетс  синусоидальное напр жение высокой частоты, обеспечивающее образование вдоль обмотки сто чих волн напр жени  с амплитудой, равной амплитуде приложенного напр жени . Частота приложепного напр жени  выбираетс  такой, чтобы длина витка была равна четверти длины сто чей волны, в результате чего на каждом виткеThe proposed test method for WIRE isolation is that a high-frequency sinusoidal voltage is applied to the test winding and to the case (or the winding ends) to provide a voltage along the winding with an amplitude equal to the amplitude of the applied voltage. The frequency of the applied voltage is chosen such that the length of the turn is equal to a quarter of the length of the standing wave, resulting in each turn

получаетс it turns out

разное по величине напр жению,different in magnitude

приложенному ко всей обмотке вapplied to the entire winding in

целом.whole

. Такой метод дает возможность эффективно испытывачъ витковую изол цию без опасности повреждени  главной изол ции обмотки. В отличие от испытани  бегущей волной, при применении предлагаемого способа междувиткозые емкости не оказывают вредного вли ни , а наоборот , способствуют более равномерному распределению витковых напр жений вдоль обмотки.. This method makes it possible to effectively test the coil insulation without the risk of damaging the main insulation of the winding. In contrast to testing with a traveling wave, when applying the proposed method, the intertwinkle capacitances do not have a harmful effect, but, on the contrary, contribute to a more uniform distribution of coil voltages along the winding.

Дл  практического применени  предлагаемого способа испытани  ВИТКОВОЙ изол ции целесообразно пользоватьс  источником, дающим серию 1езатухающих колебаний, частоту которых можно плавно измен ть в пределах от нескольких дес тков до нескольких сотен килогерц . Длительность серии колебаний должна быть мала по сравнению с периодом посылки серий. Такое устройство позвол ет иметь испытательную аппаратуру небольшой мощности .For the practical application of the proposed test method of the WIRE insulation, it is advisable to use a source that gives a series of damped oscillations whose frequency can be smoothly changed from a few tens to several hundred kilohertz. The duration of the series of oscillations should be small compared with the period of sending the series. Such a device makes it possible to have a test apparatus of low power.

Способ испытани  витковон изо-л ции обмоток электрических ма1.иин н трансформаторов, о т л и ч а ющ и и с   тем, что, с це.тыо получени  требуемых испытательных витковых напр жений без опасности повреждени  корпзспой ИЗОЛЯЦ1 при небольшой мощности испытательного устройства, к испытуемойThe method of testing the coil insulation from the windings of electrical transformers, which is of a kind, with the fact that, in order to obtain the required test coil voltages without the risk of damage to the IZOLYATS1 facility at a low power of the test device, to the subject

обмотке и к корпусу (и.ш концам обмотки) периодически прикладывают серии незатухаюптих этектрических солеба11ИЙ гакой частоты, чтобы четверть длины образуюпихс  3TO:v 5доль обмоткн сто чих ноли напр жени  была равна д.шне 1--.нтка.A series of non-damping optical solenoid frequencies is periodically applied to the winding and to the body (IC of the ends of the winding) so that a quarter of the length forms 3TO: v 5 the length of the winding of the zero voltages is equal to 1 st.

SU454133A 1955-07-23 1955-07-23 Test method for coil insulation of electric machine and transformer windings SU105237A1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
SU454133A SU105237A1 (en) 1955-07-23 1955-07-23 Test method for coil insulation of electric machine and transformer windings

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
SU454133A SU105237A1 (en) 1955-07-23 1955-07-23 Test method for coil insulation of electric machine and transformer windings

Publications (1)

Publication Number Publication Date
SU105237A1 true SU105237A1 (en) 1956-11-30

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Family Applications (1)

Application Number Title Priority Date Filing Date
SU454133A SU105237A1 (en) 1955-07-23 1955-07-23 Test method for coil insulation of electric machine and transformer windings

Country Status (1)

Country Link
SU (1) SU105237A1 (en)

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