JPS6439560A - Load electricity quantity measuring circuit for alternating current power unit - Google Patents
Load electricity quantity measuring circuit for alternating current power unitInfo
- Publication number
- JPS6439560A JPS6439560A JP19689287A JP19689287A JPS6439560A JP S6439560 A JPS6439560 A JP S6439560A JP 19689287 A JP19689287 A JP 19689287A JP 19689287 A JP19689287 A JP 19689287A JP S6439560 A JPS6439560 A JP S6439560A
- Authority
- JP
- Japan
- Prior art keywords
- phase
- output
- source side
- power source
- respective phases
- 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
- Measurement Of Current Or Voltage (AREA)
Abstract
PURPOSE:To measure a load electricity quantity on a power source side output terminal and to measure a single-phase and a three-phase electricity quantity by a single measuring instrument by providing current detectors for respective phases of the power source side output terminal and switching a single-phase and a three-phase converter. CONSTITUTION:A three-phase and three-wire type network is provided with the current detectors and current transformers CTR, CTS, and CTT for the respective phases of the power source side output terminal, the outputs of the current transformers of the respective phases are summed up, and an electric circuit selecting and switching part ISW is provided to the connection part where the sum output is zero. Further, a transformer PT is provided as a voltage detector which detects voltages between the respective phases of the power source side output terminal, and a three-phase power converter PCV is provided which is supplied with the output of the transformer PT and the outputs of the current transformers CTR, CTS, and CTT. Further, a voltage detection phase selecting and switching part VSW which obtains a two-phase output of the output of the transformer PT is provided, a single-phase power converter SCV which is supplied with the output of the switching part VSW and the two-phase output of the switching part ISW is provided, and the outputs of the converters SCV and PCV are supplied to a measuring instrument PWM through a switching circuit SW.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP19689287A JPH0682135B2 (en) | 1987-08-06 | 1987-08-06 | Load electricity quantity measurement circuit of AC power supply |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP19689287A JPH0682135B2 (en) | 1987-08-06 | 1987-08-06 | Load electricity quantity measurement circuit of AC power supply |
Publications (2)
Publication Number | Publication Date |
---|---|
JPS6439560A true JPS6439560A (en) | 1989-02-09 |
JPH0682135B2 JPH0682135B2 (en) | 1994-10-19 |
Family
ID=16365384
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP19689287A Expired - Fee Related JPH0682135B2 (en) | 1987-08-06 | 1987-08-06 | Load electricity quantity measurement circuit of AC power supply |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPH0682135B2 (en) |
-
1987
- 1987-08-06 JP JP19689287A patent/JPH0682135B2/en not_active Expired - Fee Related
Also Published As
Publication number | Publication date |
---|---|
JPH0682135B2 (en) | 1994-10-19 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
LAPS | Cancellation because of no payment of annual fees |