SU121865A1 - Method of measuring transient electrical resistance of contacts of mechanical interrupters - Google Patents

Method of measuring transient electrical resistance of contacts of mechanical interrupters

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Publication number
SU121865A1
SU121865A1 SU598968A SU598968A SU121865A1 SU 121865 A1 SU121865 A1 SU 121865A1 SU 598968 A SU598968 A SU 598968A SU 598968 A SU598968 A SU 598968A SU 121865 A1 SU121865 A1 SU 121865A1
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SU
USSR - Soviet Union
Prior art keywords
contacts
resistance
electrical resistance
transient electrical
measuring
Prior art date
Application number
SU598968A
Other languages
Russian (ru)
Inventor
Л.М. Чайка
Original Assignee
Л.М. Чайка
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 Л.М. Чайка filed Critical Л.М. Чайка
Priority to SU598968A priority Critical patent/SU121865A1/en
Application granted granted Critical
Publication of SU121865A1 publication Critical patent/SU121865A1/en

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  • Measurement Of Resistance Or Impedance (AREA)

Description

Обычно примен емые способы измерени  переходного электрического сопротивлени  контактов механических прерывателей в динамическом режиме, например, в аппаратах зажигани  с помощью осциллографа, регистрирующего кривую изменени  падени  напр жени  на контактах, требуют измерени  силы тока и напр жени .Commonly used methods for measuring the transient electrical resistance of the contacts of mechanical breakers in a dynamic mode, for example, in ignition apparatuses using an oscilloscope that records the voltage drop curve at the contacts, require measuring the current and voltage.

Описываемый способ позвол ет ограничитьс  измерением только падени  напр жени  на контактах. Пользу сь калиброванным сопротивлением , шунтирующим контакты, монсно непосредственно определ ть их сопротивление , пользу сь то.лько измерением падени  напр жени  на этих контактах и сравнива  величины отклонени  луча в осциллографе при разомкнутыхИ замкнутых контактах, что упрощает процесс измерени .The described method allows only measuring the voltage drop across the contacts to be limited. By using a calibrated resistance that shunts the contacts, it is possible to directly determine their resistance, only by measuring the voltage drop across these contacts and comparing the oscillation deviations of the beam in the oscilloscope with open and closed contacts, which simplifies the measurement process.

На чертеже изображена электрическа  схема дл  производства измерений переходного сопротивлени  контактов.The drawing shows an electrical circuit for making measurements of contact resistance.

Как видно из схемы, па.раллельно исследуемым контактам /Свключаетс  сопротивление Го, соизмеримое с переходным сопротивлением контактов. Через контакты пропускаетс  посто нный ток I. величина которого устанавливаетс  с помощью реостата R в соответствии с требовани ми экснеримента. Напр жение U, с сопротивлени  /о подаетс  на вход осциллографа. По соотношению напр жений при замкнутых и разомкнутых контактах подсчитываетс  их переходное сопротивление.As can be seen from the diagram, the paralllically investigated contacts / Go resistance, commensurate with the contact resistance of the contacts, is connected. A direct current is passed through the contacts I. The value of which is established by means of the resistor R in accordance with the requirements of the excrement. The voltage U, with resistance / o, is fed to the input of the oscilloscope. By the ratio of voltages with closed and open contacts, their transitional resistance is calculated.

Пользу сь этим методом, можно замер ть средние и мгновенные значени  переходного сопротивлени .Using this method, one can measure average and instantaneous transient resistance values.

При выбранном посто нном градуировочном сонротивлении чувствительность измерительного устройства зависит от замер емого переходного сопротивлени , повыща сь с уменьшением его величины.With a selected gradual calibration resistance, the sensitivity of the measuring device depends on the measured transient resistance, increasing with a decrease in its magnitude.

Предмет изобретени Subject invention

Способ измерени  переходного электрического сопротивлени  контактов механических прерывателей в динамическом режиме, например, в аппаратах зажигани  с помощью осциллографа, регистрируюгцего кривую изменени  падени  напр жени  на контактах, от л и ч а ю щ, и и с  тем, что, с целью упрощени  процесса измерени , контакты исследуемого прерывател  замыкают посто нным калиброванным сопротивлением малой величины и шлейф осциллографа подключают параллельно к калиброванному сопротивлению, а затем определ ют величину переходного сопротивлени  контактов по изменению падени  напр жени  на калиброванием сонротивленли ири замыкании и раЗмьгканйи контактов.The method of measuring the transient electrical resistance of the contacts of mechanical interrupters in a dynamic mode, for example, in ignition apparatus using an oscilloscope, recording a curve of change in voltage drop at the contacts, from and to that, in order to simplify the measurement process , the contacts of the investigated chopper are closed with a constant calibrated resistance of small magnitude and the oscilloscope cable is connected in parallel to the calibrated resistance, and then the value of the transition resistance is determined no contact to change the voltage drop across the calibrating sonrotivlenli iri circuit and raZmgkanyi contacts.

, .,

Т t.JT t.J

SU598968A 1958-05-07 1958-05-07 Method of measuring transient electrical resistance of contacts of mechanical interrupters SU121865A1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
SU598968A SU121865A1 (en) 1958-05-07 1958-05-07 Method of measuring transient electrical resistance of contacts of mechanical interrupters

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
SU598968A SU121865A1 (en) 1958-05-07 1958-05-07 Method of measuring transient electrical resistance of contacts of mechanical interrupters

Publications (1)

Publication Number Publication Date
SU121865A1 true SU121865A1 (en) 1958-11-30

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SU598968A SU121865A1 (en) 1958-05-07 1958-05-07 Method of measuring transient electrical resistance of contacts of mechanical interrupters

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SU (1) SU121865A1 (en)

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