SU28569A1 - Device for signaling the presence of a short circuit between the star-connected stator windings of a three-phase induction motor - Google Patents

Device for signaling the presence of a short circuit between the star-connected stator windings of a three-phase induction motor

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Publication number
SU28569A1
SU28569A1 SU62790A SU62790A SU28569A1 SU 28569 A1 SU28569 A1 SU 28569A1 SU 62790 A SU62790 A SU 62790A SU 62790 A SU62790 A SU 62790A SU 28569 A1 SU28569 A1 SU 28569A1
Authority
SU
USSR - Soviet Union
Prior art keywords
short circuit
star
signaling
induction motor
phase induction
Prior art date
Application number
SU62790A
Other languages
Russian (ru)
Inventor
Н.М.Ш. Тейтель
Original Assignee
Н.М.Ш. Тейтель
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 Н.М.Ш. Тейтель filed Critical Н.М.Ш. Тейтель
Priority to SU62790A priority Critical patent/SU28569A1/en
Application granted granted Critical
Publication of SU28569A1 publication Critical patent/SU28569A1/en

Links

Description

Насто щее изобретение представл ет собой устройство дЛ  сигнализации о наличии короткого замыкани  между соединенными звездой фазными обмотками статора индукционного двигател  трехфазного тока. Указанное устройство может быть применено при питании двигатеХ  от источника тока с заземленной нулевой точкой .и при установке автоматическот-о выключател  между фазными обмоТкаМй статора и их нулевой перемычкой.The present invention is a device for signaling the presence of a short circuit between the star-connected stator phase windings of a three-phase induction motor. The specified device can be used when powering the motor from a current source with a grounded zero point. And when installing an automatic switch between the phase windings of the stator and their zero jumper.

На чертеже изображена схема предлаг таемого устройства, в, котором дл  ртклйченн  статора S от сети, питаемой,генератором ff с заземленной нейтралью служат три однополюсные линейки разъединители jPi, РЗ Рз) включенные перед обмоткой статора. Около указанных разъединителей расположена шина Ш, электрически соединенна  с землей через плавкий предохранитель 17 и имеюп а  электрический контакт с разъединител ми при их выключенном положении. Дл  размыкани  нулевой точки обмотки статора служит автоматический масЛ ный выключатель А с двум  катушками Ми 3. В разомкнутом масл ном выключателе и одном из разъединителей в положении выключател  при коротком замыкании между фазами статора ток пойдет поThe drawing shows the circuit of the proposed device, in which for a stator S a stator from the mains supplied by the generator ff with a grounded neutral serve three single-pole lines disconnectors jPi, РЗ Рз) connected before the stator winding. A busbar W is located near these disconnectors, electrically connected to ground via fuse 17 and having electrical contact with disconnectors when they are off. To open the zero point of the stator winding, use the automatic oil switch A with two coils Mi 3. In the open oil switch and one of the disconnectors in the switch position when there is a short circuit between the stator phases, the current will go

цепи: магистральна  фаза, включенный разъединитель, фаза статора, втора  фаза статора, второй разъединитель, предохранитель , земл . При заземленном нуле альтернатора, что бывает в подавл ющем большинстве случаев, предохранитель перегорит после включени  первого рггзъединител , что будет сигналом о наличии короткого замыкани  между какими-нибудь двум  фазами и предохранит от включенн  двигател  в сеть.circuits: main phase, disconnect switch on, stator phase, second stator phase, second disconnector, fuse, ground. When the alternator is grounded to zero, which happens in the overwhelming majority of cases, the fuse will blow after the first switch is turned on, which will signal a short circuit between any two phases and prevent the motor from being turned on.

Предмет изобретени .The subject matter of the invention.

Устройство дл  сигнализации о наличии короткого замыкани  между соединенными звездою фазными обмотками статора индукционного двигател  трехфазного то ка, примен емое при питании двигател  от источника тока с заземленной нулевой точкой н при установке автоматического выключател  между фазными обмотками статора и их нулевой перемычкой, отл чающеес  тем, что шина Ш, электрически соединенна  с землей через плавкий предохранитель /7, так расположена около однополюсных линейных разъединителей РЬ PZ, РЗ. включенных перед обмоткой статора, что, при выключенном положении этих разъединителей, их ножиA device for signaling the presence of a short circuit between the star-connected phase windings of a three-phase induction motor stator, used when powering the motor from a current source with a grounded zero point and installing an automatic switch between the phase windings of the stator and their zero jumper, is different bus W, electrically connected to ground through the fuse / 7, is located near the unipolar linear disconnectors Pb PZ, PZ. included in front of the stator winding, that, when these disconnectors are off, their knives

имеют электрическое соединение с щийой Ш, с той целью, чтобы, при выключенном положенчи автоматического выключател  А и в случае наличи  короткого замыкани  между фазами обмотки статора , создавалась npji включении одногоhave an electrical connection with Sh, with the goal that when the circuit breaker A is turned off and in the case of a short circuit between the stator winding phases, npji switching on one

из разъединителей коротко-замкнута  це ь через плавкий предохранитель П и происходило перегорание последнего дл  Обращени  внимани  обслуживающего персонала на недопустимость включени  остальных разъединителей.of the short-circuit disconnectors through the fuse P and the last burned out to draw attention of the staff to the inadmissibility of switching on the other disconnectors.

-р -р -п /I -r -r -p / i

о / О t о o / o t o

/7/ 7

SU62790A 1930-01-21 1930-01-21 Device for signaling the presence of a short circuit between the star-connected stator windings of a three-phase induction motor SU28569A1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
SU62790A SU28569A1 (en) 1930-01-21 1930-01-21 Device for signaling the presence of a short circuit between the star-connected stator windings of a three-phase induction motor

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
SU62790A SU28569A1 (en) 1930-01-21 1930-01-21 Device for signaling the presence of a short circuit between the star-connected stator windings of a three-phase induction motor

Publications (1)

Publication Number Publication Date
SU28569A1 true SU28569A1 (en) 1932-12-31

Family

ID=48346394

Family Applications (1)

Application Number Title Priority Date Filing Date
SU62790A SU28569A1 (en) 1930-01-21 1930-01-21 Device for signaling the presence of a short circuit between the star-connected stator windings of a three-phase induction motor

Country Status (1)

Country Link
SU (1) SU28569A1 (en)

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