JPS5676055A - Electronic type wattmeter - Google Patents
Electronic type wattmeterInfo
- Publication number
- JPS5676055A JPS5676055A JP15342979A JP15342979A JPS5676055A JP S5676055 A JPS5676055 A JP S5676055A JP 15342979 A JP15342979 A JP 15342979A JP 15342979 A JP15342979 A JP 15342979A JP S5676055 A JPS5676055 A JP S5676055A
- Authority
- JP
- Japan
- Prior art keywords
- circuit
- current
- supplied
- circuits
- voltage range
- 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.)
- Granted
Links
Landscapes
- Emergency Protection Circuit Devices (AREA)
- Supply And Distribution Of Alternating Current (AREA)
Abstract
PURPOSE: To surely actuate corresponding breakers and to have it retain a current limiting function by a method wherein in a distribution system, every time a load current exceeds multistage rated values, corresponding breaking currents are transmitted.
CONSTITUTION: An electric power is detected in a circuit 5 based on a load voltage V and a load current I and this is converted into a frequency 6 and thereafter, it is displayed in a counter 8 as an electric energy. And further, from a detection power, an AC current is introduced through a circuit 9 and it is rectified through a circuit 10. It is supplied to current time limiting circuits 12W16 according to each given value and to a circuit 11 which identifies and specifies a voltage range corresponding to circuits 12W16. A trigger circiut 18 is actuated by means of any one of each time limiting circuit 12W16 and the pulse width of the trigger signal output from the circuit 18 is modulated through the circuit 19 in corresponding to the voltage range specified from the identification circuit 11 and passes through an outpt circuit 20 and supplied as breaking signals P1WP5 to the corresponding breakers.
COPYRIGHT: (C)1981,JPO&Japio
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP15342979A JPS5676055A (en) | 1979-11-27 | 1979-11-27 | Electronic type wattmeter |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP15342979A JPS5676055A (en) | 1979-11-27 | 1979-11-27 | Electronic type wattmeter |
Publications (2)
Publication Number | Publication Date |
---|---|
JPS5676055A true JPS5676055A (en) | 1981-06-23 |
JPS631814B2 JPS631814B2 (en) | 1988-01-14 |
Family
ID=15562314
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP15342979A Granted JPS5676055A (en) | 1979-11-27 | 1979-11-27 | Electronic type wattmeter |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS5676055A (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5986618U (en) * | 1982-12-03 | 1984-06-12 | エヌオーケー株式会社 | Breaker circuit selection type breaker |
-
1979
- 1979-11-27 JP JP15342979A patent/JPS5676055A/en active Granted
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5986618U (en) * | 1982-12-03 | 1984-06-12 | エヌオーケー株式会社 | Breaker circuit selection type breaker |
Also Published As
Publication number | Publication date |
---|---|
JPS631814B2 (en) | 1988-01-14 |
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