JPS5482016A - Prevention system from self-excitation in induction motor at power reception interruption - Google Patents
Prevention system from self-excitation in induction motor at power reception interruptionInfo
- Publication number
- JPS5482016A JPS5482016A JP15024677A JP15024677A JPS5482016A JP S5482016 A JPS5482016 A JP S5482016A JP 15024677 A JP15024677 A JP 15024677A JP 15024677 A JP15024677 A JP 15024677A JP S5482016 A JPS5482016 A JP S5482016A
- Authority
- JP
- Japan
- Prior art keywords
- excitation
- self
- breaker
- power receiving
- receiving point
- 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.)
- Pending
Links
Landscapes
- Control Of Ac Motors In General (AREA)
Abstract
PURPOSE: To make a prevention from a phenomenon of self-excitation, by such manner that with a detector, for detecting an in-flow current from power receiving point becoming below the specified value, provided, an operation of said detector be made to release a parallel condition between motor and condenser.
CONSTITUTION: With a normal voltage being fed to a power receiving point 1, when a reception of power is stopped during an operation of a motor 11 under condition of a breaker 8 closing and a breaker 12 closing, a current flowing into a secondary bus 7 of a transformer 5 from the power receiving point 1 comes to be zero. Accordingly, with an inflow current, from the power receiving point 1, detected for becoming below the specified value (a value approximate to zero) by a detector 16, the breaker 12, for switching the condenser, will be made open. With the breaker 12 made open, the state of parallel connection between the motor 11 and the condenser 15 comes to be in a state of release, not generating a phenomenon of self-excitation.
COPYRIGHT: (C)1979,JPO&Japio
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP15024677A JPS5482016A (en) | 1977-12-13 | 1977-12-13 | Prevention system from self-excitation in induction motor at power reception interruption |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP15024677A JPS5482016A (en) | 1977-12-13 | 1977-12-13 | Prevention system from self-excitation in induction motor at power reception interruption |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS5482016A true JPS5482016A (en) | 1979-06-29 |
Family
ID=15492743
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP15024677A Pending JPS5482016A (en) | 1977-12-13 | 1977-12-13 | Prevention system from self-excitation in induction motor at power reception interruption |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS5482016A (en) |
-
1977
- 1977-12-13 JP JP15024677A patent/JPS5482016A/en active Pending
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