JPS629178U - - Google Patents
Info
- Publication number
- JPS629178U JPS629178U JP10057585U JP10057585U JPS629178U JP S629178 U JPS629178 U JP S629178U JP 10057585 U JP10057585 U JP 10057585U JP 10057585 U JP10057585 U JP 10057585U JP S629178 U JPS629178 U JP S629178U
- Authority
- JP
- Japan
- Prior art keywords
- current
- ammeter
- electric meter
- photocoupler
- clamp
- 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
- 238000010586 diagram Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 230000002265 prevention Effects 0.000 description 1
Landscapes
- Measurement Of Current Or Voltage (AREA)
Description
図は本考案の計器で低圧の平衡三相電路での無
効電流を測定する方法の説明図である。
１……クランプ式変流器、２……並列抵抗、３
……可動コイル電流計、４……倍率器、５，６…
…フオトカプラ、７……電流制限抵抗、８……逆
電圧防止ダイオード、９…三相電路、１０……負
荷。
The figure is an explanatory diagram of a method for measuring reactive current in a low-voltage balanced three-phase circuit using the meter of the present invention. 1... Clamp type current transformer, 2... Parallel resistance, 3
... Moving coil ammeter, 4... Multiplier, 5, 6...
...Photocoupler, 7...Current limiting resistor, 8...Reverse voltage prevention diode, 9...Three-phase circuit, 10...Load.
Claims (1)
圧の位相で制御し、無効電流あるいは有効電流を
測定する電気計器。 ２ クランプ式変流器と電流計を一体とした電路
用測定器に組み込んだ第１項記載の電気計器。[Claims for Utility Model Registration] 1. An electric meter that measures reactive current or active current by controlling the current passing through an ammeter with the voltage phase via a photocoupler. 2. The electric meter according to item 1, which incorporates a clamp-type current transformer and an ammeter into an integrated circuit measuring device.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP10057585U JPS629178U (en) | 1985-07-02 | 1985-07-02 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP10057585U JPS629178U (en) | 1985-07-02 | 1985-07-02 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS629178U true JPS629178U (en) | 1987-01-20 |
Family
ID=30970527
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP10057585U Pending JPS629178U (en) | 1985-07-02 | 1985-07-02 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS629178U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH07110347A (en) * | 1993-10-08 | 1995-04-25 | Nec Corp | Direct current measuring device |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5719675A (en) * | 1980-07-11 | 1982-02-01 | Hitachi Ltd | Detector for reactive current |
-
1985
- 1985-07-02 JP JP10057585U patent/JPS629178U/ja active Pending
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5719675A (en) * | 1980-07-11 | 1982-02-01 | Hitachi Ltd | Detector for reactive current |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH07110347A (en) * | 1993-10-08 | 1995-04-25 | Nec Corp | Direct current measuring device |
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