SU432631A1 - DEVICE FOR TEMPERATURE PROTECTION OF ASYNCHRONOUS ELECTRIC MOTOR - Google Patents
DEVICE FOR TEMPERATURE PROTECTION OF ASYNCHRONOUS ELECTRIC MOTORInfo
- Publication number
- SU432631A1 SU432631A1 SU1764617A SU1764617A SU432631A1 SU 432631 A1 SU432631 A1 SU 432631A1 SU 1764617 A SU1764617 A SU 1764617A SU 1764617 A SU1764617 A SU 1764617A SU 432631 A1 SU432631 A1 SU 432631A1
- Authority
- SU
- USSR - Soviet Union
- Prior art keywords
- electric motor
- temperature protection
- asynchronous electric
- relay
- posistor
- Prior art date
Links
Landscapes
- Protection Of Generators And Motors (AREA)
Description
1one
Известны устройства дл темпгратурной защ.иты асин.хронного электродвигател , содержащие блок отитани со сглаживающим конденсаторам, двухкаскадный усилитель и реле, включенное .последовательно с цапью, состо щей из трех познсторов, в монтированиых в три обмотки электродвигател .There are known devices for templating protection of an asyn-synchronous electric motor, comprising a thrashing unit with smoothing capacitors, a two-stage amplifier and a relay connected in series with a three-poznor stud, mounted in three windings of an electric motor.
Дл повыщени надежности л термостабильности в предлагаемом устройстве дополнительно Применены два диода, один из которых включен в цепь обратной св зк двухкаскадного усилител , а другой - параллельно позисторам.To increase the reliability of thermal stability in the proposed device, two additional diodes are used, one of which is connected to the feedback circuit of a two-stage amplifier, and the other is parallel to the posistor.
На чертеже да:На схема описываемого устройства .In the drawing, yes: On the scheme of the described device.
Устройство состоит из емкостного делител Ci напр жени , выпр мительного моста, выполненного на диодах , стабилизирующего диода Д, сглаживающего .конденсатора Cz, трипгерного усилител посто нного тока , выполненного на транзисторах TI и TZ и резисторах RI-RZ, и выходного реле Р. Диоды Дб и Д служат дл температурной компенсации , а диод Де, - дл защиты схемы от э.д.с. самоиндукции реле лри .переходных процессах . К клеммам Ki и К2 подключены триThe device consists of a capacitive voltage divider Ci, a rectifying bridge, made on diodes, a stabilizing diode D, a smoothing capacitor Cz, a tripper DC amplifier, made on TI and TZ transistors and RI-RZ resistors, and an output relay P. Diodes DB and D are used for temperature compensation, and diode D is used to protect the circuit from emf. self-induction relays. transitional processes. Three terminals are connected to terminals Ki and K2.
последовательно соединенных позистора.consistently connected posistor.
При нормальной работе двигател сопротивление позисторов .мало, транзистор Г2 закрыт , а транзистор TI открыт. Реле Р обтекаетс током, контакты его , и магнитный пускатель двигател выключен. При аварии сопротивление поЗ|Исторов резко возрастает , транзистор Т2 открываетс , а транзистор Г закрываетс . Реле Р размыкает свои контакты, .и двигатель отключаетс .During normal operation of the motor, the resistance of posistor is small, the transistor G2 is closed, and the transistor TI is open. The relay P is flowed around, its contacts and the magnetic motor starter is off. In case of an accident, the resistance of the PZ | Source is sharply increased, the transistor T2 opens, and the transistor G closes. Relay P opens its contacts, and the motor shuts off.
Предмет изобретени Subject invention
Устройство дл температурной защиты асин.хронного электродвигател , содержащее блок питани со сглаживающим конденсаторо .м, двухкаскадный усилитель, .выполненный на полупрово.дниковых приборах по триггерной с.хеме с реле, включенным в коллекторную цепь .последнего, и лозисторы, встроенные в обмотки электродвигател , отличающеес тем, что, с делью повыщени .надежности ,11 тер1мостабильности, в нем дополнительно При1менены два диода, один из которых включен в цепь обратной св зи двухкаскадного усилител , а другой - параллельно позисторам .A device for temperature protection of an asyn. Synchronous electric motor, containing a power supply unit with a smoothing capacitor, a two-stage amplifier, made on semi-conductor monitors using a trigger circuit with a relay connected to the collector circuit of the latter, and lozistors built into the windings of the electric motor , characterized in that, in order to increase reliability, 11 thermal stability, it additionally has two diodes, one of which is connected to the feedback circuit of a two-stage amplifier, and the other is parallel to the posistor m.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| SU1764617A SU432631A1 (en) | 1972-03-28 | 1972-03-28 | DEVICE FOR TEMPERATURE PROTECTION OF ASYNCHRONOUS ELECTRIC MOTOR |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| SU1764617A SU432631A1 (en) | 1972-03-28 | 1972-03-28 | DEVICE FOR TEMPERATURE PROTECTION OF ASYNCHRONOUS ELECTRIC MOTOR |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| SU432631A1 true SU432631A1 (en) | 1974-06-15 |
Family
ID=20508147
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| SU1764617A SU432631A1 (en) | 1972-03-28 | 1972-03-28 | DEVICE FOR TEMPERATURE PROTECTION OF ASYNCHRONOUS ELECTRIC MOTOR |
Country Status (1)
| Country | Link |
|---|---|
| SU (1) | SU432631A1 (en) |
-
1972
- 1972-03-28 SU SU1764617A patent/SU432631A1/en active
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