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SU836605A1 - Device for determining phase alternation - Google Patents

Device for determining phase alternation Download PDF

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Publication number
SU836605A1
SU836605A1 SU792801598A SU2801598A SU836605A1 SU 836605 A1 SU836605 A1 SU 836605A1 SU 792801598 A SU792801598 A SU 792801598A SU 2801598 A SU2801598 A SU 2801598A SU 836605 A1 SU836605 A1 SU 836605A1
Authority
SU
USSR - Soviet Union
Prior art keywords
resistor
determining phase
phase alternation
primary winding
secondary winding
Prior art date
Application number
SU792801598A
Other languages
Russian (ru)
Inventor
Гайк Аршакович Пилтакян
Original Assignee
Piltakyan Gajk A
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 Piltakyan Gajk A filed Critical Piltakyan Gajk A
Priority to SU792801598A priority Critical patent/SU836605A1/en
Application granted granted Critical
Publication of SU836605A1 publication Critical patent/SU836605A1/en

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Description

1one

Изобретение относитс  к электротехническим измерени м, в частности к устройствам дл  определени  пор дка чередовани  фаз трехфазной сети.The invention relates to electrical measurements, in particular, to devices for determining the order of alternating phases of a three-phase network.

Известно устройство, содержащее два трансформатора и исполнительный орган дл  определени  пор дка чередовани  фаз на зажимах у потребителей , позвол ющее произвести автоматическую корректировку их путем замены одной из индикационных лампA device containing two transformers and an actuator for determining the order of phase alternation at the terminals of consumers, allowing them to be automatically corrected by replacing one of the indicator lamps, is known.

на исполнительный орган (наЬример, двухполюсный переключатель) 1.to the executive body (example, bipolar switch) 1.

Недостатком известного устройств  вл етс  наличие в нем двух специальных трансформаторов, делающих его громоздким и дорогостсэ щим..A disadvantage of the known devices is the presence in it of two special transformers, which make it cumbersome and expensive.

Цель насто щего изобретени  - повышение надежности и экономичности устройства.The purpose of the present invention is to improve the reliability and efficiency of the device.

поставленна  цель достигаетс  благодар  тому, что в устройстве, содержащем трансформатор, начало, конец и средн   точка первичной обмотки которого подключены к трем сети, средн   точка первичной обмотки подключена через последова тельно соединенные первые резистор и диод и второй резистор к общей шине , а выводы вторичной обмотки подключены через последовательно соединенные вторые диод и резистор к выходным зажимам устройства.The goal is achieved by the fact that in the device containing the transformer, the beginning, end and middle point of the primary winding of which are connected to three networks, the middle point of the primary winding is connected via serially connected first resistor and diode and the second resistor to the common bus The windings are connected via serially connected second diode and a resistor to the output terminals of the device.

На чертеже приведена принципиальна  электрическа  схема предлагаемого устройства.The drawing shows the principal electrical circuit of the proposed device.

Начало, конец и средн   точка первичной обмотки трансформатора 1 подключены к трем фазам сети. Средн   The beginning, end and middle point of the primary winding of the transformer 1 are connected to the three phases of the network. Average

0 точка последовательно через резистор 2, диод 3 и резистор 4 подключена к общей шине сети, а выводы вторичной обмотки последовательно через диод 5 и резистор 4 подключены к вы5 ходным зажимам 6 и 7 устройства. В зависимости от последовательности фаз на зажимах первичной обмотки напр жение между средней ее точкой и землей и ЭДС вторичной обмотки могут 0 point is connected in series through resistor 2, diode 3 and resistor 4 is connected to the common bus, and secondary winding leads are connected in series through diode 5 and resistor 4 to output terminals 6 and 7 of the device. Depending on the phase sequence at the terminals of the primary winding, the voltage between its midpoint and ground and the EMF of the secondary winding can

0 быть встречными или совпасть по фазе .0 to be opposed or coincide in phase.

. Работает устройство следующим образом.. The device works as follows.

Когда направлени  токов на обще.м участке цепи (резистор 4) совпадают, ток протекает от средней точки первичной обмотки трансформатора 1 к общей шине сети, создава  при этом падение напр жени  на резисторе 4 When the directions of the currents in the common part of the circuit (resistor 4) coincide, the current flows from the midpoint of the primary winding of the transformer 1 to the common bus network, thus creating a voltage drop across the resistor 4

0 больше, чем ЭДС вторичной обмотки.0 more than the emf of the secondary winding.

оэтому по вторичной обмотке в этом . лучае ток не протекает. При другой последовательности фаз на зажимах первичной обмотки и с учетом вли ни  диодов 3 и 5 ток по общему участку контуров (резистор 4) может вызвать только ЭДС вторичной обмотки.Therefore, the secondary winding in this. no current is flowing. With a different phase sequence at the terminals of the primary winding and taking into account the effect of the diodes 3 and 5, the current in the common area of the circuits (resistor 4) can cause only the emf of the secondary winding.

Таким образом, при одной последовательности фаз на зажимах первичной обмотки трансформатора ЭДС вторичной обмотки его может вызывать ток в одинаковых полупериодах, а при другой последовательности фаз - не вызвать , что бывает достаточно дл  правильной работы исполнитёльнЬго органа.Thus, with a single phase sequence at the terminals of the primary winding of a transformer, the EMF of the secondary winding can cause a current in the same half periods, and with a different phase sequence - not cause, which is enough for the proper functioning of the organ.

Замена одного из трансформаторов на два резистора и два диода позвол ет повысить надежность и эконоКшчность У9тройства. .Replacing one of the transformers with two resistors and two diodes makes it possible to increase the reliability and efficiency of the device. .

Claims (1)

1. Авторское свидетельство СССР 563646, кл. G 01 R 29/18, 1972 (прототип).1. USSR author's certificate 563646, cl. G 01 R 29/18, 1972 (prototype).
SU792801598A 1979-07-26 1979-07-26 Device for determining phase alternation SU836605A1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
SU792801598A SU836605A1 (en) 1979-07-26 1979-07-26 Device for determining phase alternation

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
SU792801598A SU836605A1 (en) 1979-07-26 1979-07-26 Device for determining phase alternation

Publications (1)

Publication Number Publication Date
SU836605A1 true SU836605A1 (en) 1981-06-07

Family

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Family Applications (1)

Application Number Title Priority Date Filing Date
SU792801598A SU836605A1 (en) 1979-07-26 1979-07-26 Device for determining phase alternation

Country Status (1)

Country Link
SU (1) SU836605A1 (en)

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