SU103558A1 - Device for signaling ground faults in systems with non-grounded neutral - Google Patents

Device for signaling ground faults in systems with non-grounded neutral

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Publication number
SU103558A1
SU103558A1 SU438759A SU438759A SU103558A1 SU 103558 A1 SU103558 A1 SU 103558A1 SU 438759 A SU438759 A SU 438759A SU 438759 A SU438759 A SU 438759A SU 103558 A1 SU103558 A1 SU 103558A1
Authority
SU
USSR - Soviet Union
Prior art keywords
current
systems
ground faults
grounded neutral
signaling
Prior art date
Application number
SU438759A
Other languages
Russian (ru)
Inventor
А.Ф. Березовский
Original Assignee
А.Ф. Березовский
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 А.Ф. Березовский filed Critical А.Ф. Березовский
Priority to SU438759A priority Critical patent/SU103558A1/en
Application granted granted Critical
Publication of SU103558A1 publication Critical patent/SU103558A1/en

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Description

Предметом изибретени   вл етс  устройство дл  сигнализации при за.мыкани х на , примен емое в системах с незаземленно нейтралью. Компенсаци  тока небалаига, вызванного таком нагрузки , достигаетс  иутем наложени  тока, пропорционального одному из фазных токов; этим достигаетс  увеличение чувствительности защиты.The subject matter is a signaling device for interlocking on, used in systems with ungrounded neutral. The current compensation of the non-ligament caused by such a load is achieved and the overlap of the current proportional to one of the phase currents; this increases the sensitivity of the protection.

Возможно иримеиение и других сочетаний фазных токов, используемых д.л  наложени .It is possible to irimeenia and other combinations of phase currents used by the overlap.

Су цествуют способы иовышени  чувст1 ительности защиты от замыканий н; землю путе:м комиепсации емкостных токов защи1цаемоп линш.There are ways to increase the sensitivities of protection against closures n; ground path: capacitive currents are protected by a fixed linsh.

Одиако ирп этом запшта не будет отстроеиа от токов небаланса, вызванных токами нагрузки. Удовлетворительные результаты дает применение устройства. составл 10Н1:его предмет насто щего изобретени . На ирилагаемом чертеже изображена иринцпииальна  схема дл  сигнализации при замыкани х на с устройством дл  кo иeнcaции тока небаланса .Odiako this irp will not be detached from unbalance currents caused by load currents. Satisfactory results gives the use of the device. constituted 10H1: its object of the present invention. An illustrative diagram is shown in the drawing for signaling at the closures on with a device for measuring unbalance current.

Устройство вынолнено в виде промежуточного трехстержневого трансформатора (1) тока.The device is made as an intermediate three-core current transformer (1).

Обмотка (2) этого трансформатора помещена на среднем стерж,не н иитает реле (3) сигна; иза.ции при замыкани х на зежпо. Обмотка (4), наход ща с  на одH05t из кравших стержией иромежуточното трансформатора (1), включена в иулевой провод трансформаторов (5) тока, соединенных в ехеш фильтра токов нулевой последовательности. Дл  компенсации тока Небаланса служгп обмотка (6), помещенна  на другом крайнем стержне промежуточного трансформатора, отде .тснном от  рма воздушным зазором (7). Эта включаетс.  своими 01иайками на фазньп ток или иа c ynrf или разность токов двух фаз. 1лавный сдвиг ио фазе компенсиру101цего магнитного потока достигаетс  перемеп;ением медного или алюминиевого короткозамкнутого витка (S) в зазоре (7). Экран вынолнен в виде обоймы с прорезью и насажен на конец )фма. Винт (1)) служит дл  закренлени  обоймы.The winding (2) of this transformer is placed on the middle rod, it does not detect the relay (3) signal; iz.tsii when you close x to bezhe. The winding (4), located on one of the h05 of the core and the intermediate transformer (1), is included in the neutral wire of the current transformers (5) connected to the filter of zero-sequence currents. To compensate for the current of the unbalance of the wrap, a winding (6) is placed on the other extreme terminal of the intermediate transformer, separated from the frame by an air gap (7). This one is included. with their own 01 to the current or the current with ynrf or the difference of the currents of the two phases. The main shift in the phase of the compensating magnetic flux is achieved by shifting the copper or aluminum short-circuited coil (S) in the gap (7). The screen is made in the form of a clip with a slot and mounted on the end of the frame. The screw (1)) serves to fasten the yoke.

Обмотка (10) подключена через конденсатор (11) к фильтру напр жени  нулевой иоследовательностн, составленному из траисфэрматпров нанр женп  (12), н предназначена дл  комненсации во вторичной цени емкостного тока, создаваемого самой заицпцаемой линией.The winding (10) is connected through a capacitor (11) to a voltage filter of zero and a sequence composed of a tracing filter (12), and is intended to compensate for the secondary value of the capacitive current generated by the clamp line itself.

Предмет и з о б р е т е н п  Subject and purpose of the article

Устройство дл  сигнализации при замыкани х иа землю в системах с незаземлеиной нейтралью с ко шенсацией емкостного тока защищаемой линии, о тл и ч а ю HI, е е с   тем, что, с целью увеличени  чувствительности устройства, применен трехстерж,невой промежуточный трансформатор, крайний стержень которого с обмоткой, обтекаемой током, ироиорциональным току нагрузки защищаемой ливши, имеет воздушнъи зазор с помещенным в нем короткозамкнутым витком дл  плавной регулировки фазы магнитниго IIOTOJUI, компенсирующего Б среднем стержне поток, вызванный током небаланса.The device for signaling the closure of the earth in systems with non-earth neutral with the capacitance current capacitance of the protected line, about the HI, e with the fact that, in order to increase the sensitivity of the device, used three-core, nevy intermediate transformer, extreme the core of which with a winding, streamlined current, and the current load current of the protected livshi, has an air gap with a short-circuited coil placed in it to smoothly adjust the phase of the IIOTOJUI magnetic core, which compensates for the B medium rod flow caused unbalance current.

/ P

SU438759A 1950-11-23 1950-11-23 Device for signaling ground faults in systems with non-grounded neutral SU103558A1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
SU438759A SU103558A1 (en) 1950-11-23 1950-11-23 Device for signaling ground faults in systems with non-grounded neutral

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
SU438759A SU103558A1 (en) 1950-11-23 1950-11-23 Device for signaling ground faults in systems with non-grounded neutral

Publications (1)

Publication Number Publication Date
SU103558A1 true SU103558A1 (en) 1955-11-30

Family

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Family Applications (1)

Application Number Title Priority Date Filing Date
SU438759A SU103558A1 (en) 1950-11-23 1950-11-23 Device for signaling ground faults in systems with non-grounded neutral

Country Status (1)

Country Link
SU (1) SU103558A1 (en)

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