US1848270A - Electric induction relay with two auxiliary phase windings counteracting each other - Google Patents
Electric induction relay with two auxiliary phase windings counteracting each other Download PDFInfo
- Publication number
- US1848270A US1848270A US543903A US54390331A US1848270A US 1848270 A US1848270 A US 1848270A US 543903 A US543903 A US 543903A US 54390331 A US54390331 A US 54390331A US 1848270 A US1848270 A US 1848270A
- Authority
- US
- United States
- Prior art keywords
- relay
- auxiliary phase
- counteracting
- phase windings
- electric induction
- Prior art date
- Legal status (The legal status 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 status listed.)
- Expired - Lifetime
Links
- 238000004804 winding Methods 0.000 title description 14
- 230000006698 induction Effects 0.000 title description 9
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical group [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 5
- 238000004353 relayed correlation spectroscopy Methods 0.000 description 2
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 1
- 241000283986 Lepus Species 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- 229910052802 copper Inorganic materials 0.000 description 1
- 239000010949 copper Substances 0.000 description 1
- 229910052742 iron Inorganic materials 0.000 description 1
- 230000035939 shock Effects 0.000 description 1
Images
Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H71/00—Details of the protective switches or relays covered by groups H01H73/00 - H01H83/00
- H01H71/10—Operating or release mechanisms
- H01H71/12—Automatic release mechanisms with or without manual release
- H01H71/42—Induction-motor, induced-current, or electrodynamic release mechanisms
Definitions
- the present invention relates to an electric constant time limit relay of induction type which is intended to act as an intermediary agent between a primary relay and a controlling device, for instance between a voltage relay and a ratio adjuster for a transformer, said relay having the characteristic feature that the primary relay will have to break and close only a very small power and therefore can be made very sensitive.
- the invention utilizes the arrangement known per se of two auxiliary windings (shading coils) on a common electro-magnet,
- a form of the invention is diagrammatically illustrated in the accompanying draw-' ings, in two views perpendicular to each other in Figs. 1 and 1 is a coil of the electro-magnet, 2 its iron core and 3 the induction disc.
- the iron core 2 has adjacent to the air gap embracing the induction disc two auxiliary phase windings 4, 5, which are placed on either side of the tree portion 6 of the said iron core and therefore act to rotate the disc 3 in opposite directions.
- One of the auxiliary phase windings 4 is permanently short-circuited, while the other 5 is normally open and connected to a pair of contacts 7, over which it can be short-circuited by means of a primary relay 8.
- the auxiliary phase winding 4 is the weaker one, that is. it contains either less copper or embraces less iron than the winding 5, preferably both as has been indicated in the drawings.
- the primary relay 8 is for instance connected to the voltage of a power system, and the coil 1 may be connected to the same voltage.
- the disc 3 is influenced by a braking magnet 9 in a known maner and is mounted on a shaft 10 which also carries an arm 11 which normally bears against a stop 12 under the influence of the torque produced by the auxiliary phase winding 4.
- the auxiliary phase winding 5 is closed by the relay 8
- the disc is started in the clock-wise direction and after a certain time presses a contact piece 13 on the arnr 11 against a pair of fixed contacts 14 and thereby closes a circuit, for instance through a controlling motor for a transformer ratio ad'uster.
- Electric induction relay comprising an electro-magnet, an auxiliary hase winding thereon adapted to be short-circuited by an auxiliary relay, a permanently short-circuited auxiliary phase winding thereon weaker than and counter-acting the first-named winding, an induction disc cooperating with said electromagnet and contacts operated by said disc.
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- Electromagnets (AREA)
Description
Mi. s 1'932. w, H PETERS 1,848,270
ELECTRIC INDUCTION RELAY WITH TWO AUXILIARY PHASE WINDINGS COUNTERACTING EACH OTHER Filed June 12, 1951 W We fg/01w? Patented Mar. 8, 1932 WILHELM HENNING PETERSEN, OF VASTERAS, SWEDEN, ASSIGNOR TO ALLMANNA SVENSKA ELEKTRISKA AKTIEBOLAGET, E VASTERAS, SWEDEN, A CORPORATION 01' SWEDEN ELECTRIC INDUCTION RELAY WITH TWO AUXILIARY PHASE WINDINGS COUNTER- ACTING EACH OTHER Application iiled .Tune 12, 1931, Serial No. 543,908, and in. Sweden June 12, 1980.
The present invention relates to an electric constant time limit relay of induction type which is intended to act as an intermediary agent between a primary relay and a controlling device, for instance between a voltage relay and a ratio adjuster for a transformer, said relay having the characteristic feature that the primary relay will have to break and close only a very small power and therefore can be made very sensitive. The invention utilizes the arrangement known per se of two auxiliary windings (shading coils) on a common electro-magnet,
counteracting each other, and is characterized by the fact that the stronger one of the said auxiliary phase windings is normally open but provided with means for being short-circuited by the primary relay, while the weaker auxiliary phase winding is permanently short-circuited.
A form of the invention is diagrammatically illustrated in the accompanying draw-' ings, in two views perpendicular to each other in Figs. 1 and 1 is a coil of the electro-magnet, 2 its iron core and 3 the induction disc. The iron core 2 has adjacent to the air gap embracing the induction disc two auxiliary phase windings 4, 5, which are placed on either side of the tree portion 6 of the said iron core and therefore act to rotate the disc 3 in opposite directions. One of the auxiliary phase windings 4 is permanently short-circuited, while the other 5 is normally open and connected to a pair of contacts 7, over which it can be short-circuited by means of a primary relay 8. The auxiliary phase winding 4 is the weaker one, that is. it contains either less copper or embraces less iron than the winding 5, preferably both as has been indicated in the drawings. The primary relay 8 is for instance connected to the voltage of a power system, and the coil 1 may be connected to the same voltage.
The disc 3 is influenced by a braking magnet 9 in a known maner and is mounted on a shaft 10 which also carries an arm 11 which normally bears against a stop 12 under the influence of the torque produced by the auxiliary phase winding 4. When the auxiliary phase winding 5 is closed by the relay 8, the disc is started in the clock-wise direction and after a certain time presses a contact piece 13 on the arnr 11 against a pair of fixed contacts 14 and thereby closes a circuit, for instance through a controlling motor for a transformer ratio ad'uster.
By deriving the setting force and the counteracting force of the relay from the same voltage coil 1, an inferior variation of the voltage will have no essential influence on the time of function of the relay. In the same time, the movements of the relay obtain the softness and freedom from shocks which are characteristic to induction relays in general. The volt-ampere number in the auxiliary phase winding 5 can be kept very low (in most cases occurring in practice less than 1 V. A.), which enables the primary relay 8 to be very sensitive.
I claim as my invention: 7
Electric induction relay comprising an electro-magnet, an auxiliary hase winding thereon adapted to be short-circuited by an auxiliary relay, a permanently short-circuited auxiliary phase winding thereon weaker than and counter-acting the first-named winding, an induction disc cooperating with said electromagnet and contacts operated by said disc.
In testimony whereof I have signed my name to this specification.
WILHELM HENNING PETERSEN.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| SE1848270X | 1930-06-12 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| US1848270A true US1848270A (en) | 1932-03-08 |
Family
ID=20423776
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| US543903A Expired - Lifetime US1848270A (en) | 1930-06-12 | 1931-06-12 | Electric induction relay with two auxiliary phase windings counteracting each other |
Country Status (1)
| Country | Link |
|---|---|
| US (1) | US1848270A (en) |
-
1931
- 1931-06-12 US US543903A patent/US1848270A/en not_active Expired - Lifetime
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