FI68471C - Belastningsindikator foer vaexelstroemsmotorer - Google Patents
Belastningsindikator foer vaexelstroemsmotorer Download PDFInfo
- Publication number
- FI68471C FI68471C FI810144A FI810144A FI68471C FI 68471 C FI68471 C FI 68471C FI 810144 A FI810144 A FI 810144A FI 810144 A FI810144 A FI 810144A FI 68471 C FI68471 C FI 68471C
- Authority
- FI
- Finland
- Prior art keywords
- signal
- motor
- circuit
- output
- outputting
- Prior art date
Links
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R21/00—Arrangements for measuring electric power or power factor
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Control Of Electric Motors In General (AREA)
- Control Of Ac Motors In General (AREA)
- Protection Of Generators And Motors (AREA)
- Control Of Multiple Motors (AREA)
Claims (5)
1. Belastningsindikator för växelströmsmotorer, vilken indikator innefattar en givare (2) för framtagning av en motorströmmen representerande signal och en givare (1) för framtagning av en motorspänningen repre- 5 senterande signal, kännetecknad aven multiplicerande krets (3) för multipiicering av de motorströmmen och motorspänningen representerande signalerna med varandra för framtagning av en inmatad effekt representerande signal, en krets (5) för framtag-10 ning av en motorströmmens absolutvärde representerande signal, en skillnadskrets (4) för bildande av en signal, som representerar skillnaden mellan den inmatad effekt representerande signalen och den motorströmmens absolutvärde representerande signalen samt en krets (PI) för vai 15 av de relativa storlekarna av skillnadskretsens insigna-ler i beroende av den anslutna växelströmsmotorn.
2. Belastningsindikator enligt patentkravet 1, kännetecknad därav, att kretsen (5) för framtagning av en motorströmmens absolutvärde representerande 20 signal innefattar en likriktare, ansluten tili givaren (2) för framtagning av en motorströmmen representerande signal.
3. Belastningsindikator enligt patentkravet 2, kännetecknad därav, att likriktaren (5) är en 25 halvvägslikriktare.
4. Belastningsindikator enligt patentkravet 2 eller 3, kännetecknad därav, att kretsen (Pl) för vai av de relativa storlekarna av skillnadskretsens (4) insigna~ ler innefattar en tili likriktarens (5) utgäng ansluten 30 spänningsdelare (Pl) för inställning av värdet pä en konstant k i den av skillnadskretsen (4) bildade signalen P—k|I|, där P är den multiplicerande kretsens (3) utsignal och I är strömgivarens (2) utsignal.
5. Belastningsindikator enligt nägot av patentkraven
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
SE8000672A SE417754B (sv) | 1980-01-29 | 1980-01-29 | Belastningsindikator for vexelstromsmotorer |
SE8000672 | 1980-01-29 |
Publications (3)
Publication Number | Publication Date |
---|---|
FI810144L FI810144L (fi) | 1981-07-30 |
FI68471B FI68471B (fi) | 1985-05-31 |
FI68471C true FI68471C (fi) | 1985-09-10 |
Family
ID=20340099
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
FI810144A FI68471C (fi) | 1980-01-29 | 1981-01-19 | Belastningsindikator foer vaexelstroemsmotorer |
Country Status (11)
Country | Link |
---|---|
US (1) | US4333118A (sv) |
JP (1) | JPS5716597A (sv) |
CH (1) | CH655393B (sv) |
DE (1) | DE3038788A1 (sv) |
DK (1) | DK147444C (sv) |
FI (1) | FI68471C (sv) |
FR (1) | FR2474698B1 (sv) |
GB (1) | GB2070355B (sv) |
IT (1) | IT1135196B (sv) |
NO (1) | NO157594C (sv) |
SE (1) | SE417754B (sv) |
Families Citing this family (14)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5956896A (ja) * | 1982-09-24 | 1984-04-02 | Toshiba Corp | 交流電動機の制御装置 |
JPH074080B2 (ja) * | 1984-04-13 | 1995-01-18 | 日立機電工業株式会社 | クレーン等巻上装置の速度制御装置 |
US4563508A (en) * | 1984-05-18 | 1986-01-07 | Dart Industries, Inc. | Injection moldable aromatic polyesters compositions and method of preparation |
US4879623A (en) * | 1985-12-02 | 1989-11-07 | Caterpillar Industrial Inc. | Voltage transients |
US4713608A (en) * | 1986-03-06 | 1987-12-15 | Computer Power Systems Corporation | Apparatus for providing cost efficient power measurement |
US4869102A (en) * | 1986-04-04 | 1989-09-26 | Movats Incorporated | Method and apparatus for remote monitoring of valves and valve operators |
US5000040A (en) * | 1986-04-04 | 1991-03-19 | Movats Incorporated | Method and apparatus for remote monitoring of valves and valve operators |
US4831873A (en) * | 1986-04-04 | 1989-05-23 | Movats Incorporated | Method and apparatus for remote monitoring of valves and valve operators |
US4891975A (en) * | 1986-04-04 | 1990-01-09 | Movats Incorporated | Method and apparatus for remote monitoring of valves and valve operators |
US4888996A (en) * | 1987-12-22 | 1989-12-26 | Movats Incorporated | DC motor operated valve remote monitoring system |
US5005008A (en) * | 1989-04-20 | 1991-04-02 | Hewlett Packard Company | Method and apparatus for providing thermodynamic protection of a driver circuit used in an in-circuit tester |
AT393912B (de) * | 1989-11-16 | 1992-01-10 | Elin Energieanwendung | Verfahren zur ermittlung des mechanischen drehmomentes |
SE516155C2 (sv) | 1997-10-28 | 2001-11-26 | Emotron Ab | Belastningsvakt |
US6501629B1 (en) | 2000-10-26 | 2002-12-31 | Tecumseh Products Company | Hermetic refrigeration compressor motor protector |
Family Cites Families (9)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR1135694A (fr) * | 1955-03-24 | 1957-05-02 | Procédé et appareil de mesure de puissance réelle | |
US3579217A (en) * | 1968-06-10 | 1971-05-18 | Thomas Machinery Corp | Method and apparatus for detecting and indicating malfunction of a tableting machine |
US3931559A (en) * | 1974-08-02 | 1976-01-06 | Delta-X Corporation | Malfunction detector circuit for the use with a pump-off control circuit |
JPS5133451A (sv) * | 1974-09-13 | 1976-03-22 | Hitachi Ltd | |
DD128743A1 (de) * | 1976-12-02 | 1977-12-07 | Dieter Zenkel | Schaltungsanordnung zum erfassen der mechanischen belastung eines drehstrommotors |
US4100587A (en) * | 1976-12-28 | 1978-07-11 | General Electric Company | Circuit for detecting the flow of an excess of reverse power from a load to a power system |
US4079313A (en) * | 1977-04-18 | 1978-03-14 | Allen-Bradley Company | Digital watts transducer |
DE2844548A1 (de) * | 1978-10-12 | 1980-04-30 | Elfi Innovationer | Schaltungsanordnung zur anzeige des belastungszustandes eines wechselstrommotors |
FR2470973A1 (fr) * | 1979-12-07 | 1981-06-12 | Telemecanique Electrique | Dispositif de determination du couple fourni par un moteur electrique asynchrone |
-
1980
- 1980-01-29 SE SE8000672A patent/SE417754B/sv not_active IP Right Cessation
- 1980-10-14 DE DE19803038788 patent/DE3038788A1/de active Granted
-
1981
- 1981-01-19 FI FI810144A patent/FI68471C/fi not_active IP Right Cessation
- 1981-01-26 US US06/228,553 patent/US4333118A/en not_active Expired - Lifetime
- 1981-01-27 DK DK35881A patent/DK147444C/da not_active IP Right Cessation
- 1981-01-27 IT IT19358/81A patent/IT1135196B/it active
- 1981-01-27 CH CH50181A patent/CH655393B/de unknown
- 1981-01-27 FR FR8101478A patent/FR2474698B1/fr not_active Expired
- 1981-01-27 NO NO810261A patent/NO157594C/no unknown
- 1981-01-29 GB GB8102764A patent/GB2070355B/en not_active Expired
- 1981-01-29 JP JP1090481A patent/JPS5716597A/ja active Granted
Also Published As
Publication number | Publication date |
---|---|
CH655393B (sv) | 1986-04-15 |
GB2070355A (en) | 1981-09-03 |
NO810261L (no) | 1981-07-30 |
DK35881A (da) | 1981-07-30 |
JPS6333398B2 (sv) | 1988-07-05 |
IT1135196B (it) | 1986-08-20 |
JPS5716597A (en) | 1982-01-28 |
SE417754B (sv) | 1981-04-06 |
IT8119358A0 (it) | 1981-01-27 |
DE3038788A1 (de) | 1981-07-30 |
NO157594B (no) | 1988-01-04 |
GB2070355B (en) | 1983-11-30 |
FI810144L (fi) | 1981-07-30 |
FR2474698A1 (fr) | 1981-07-31 |
FR2474698B1 (fr) | 1985-06-28 |
DK147444C (da) | 1985-02-18 |
DK147444B (da) | 1984-08-06 |
FI68471B (fi) | 1985-05-31 |
DE3038788C2 (sv) | 1987-06-19 |
NO157594C (no) | 1988-04-13 |
US4333118A (en) | 1982-06-01 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
MM | Patent lapsed |
Owner name: EL-FI INNOVATIONER AB |