JPH0314468U - - Google Patents
Info
- Publication number
- JPH0314468U JPH0314468U JP7411889U JP7411889U JPH0314468U JP H0314468 U JPH0314468 U JP H0314468U JP 7411889 U JP7411889 U JP 7411889U JP 7411889 U JP7411889 U JP 7411889U JP H0314468 U JPH0314468 U JP H0314468U
- Authority
- JP
- Japan
- Prior art keywords
- phase
- connection
- circuit
- motor
- center 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
- 238000001514 detection method Methods 0.000 claims description 5
- 230000005540 biological transmission Effects 0.000 claims description 3
- 239000003990 capacitor Substances 0.000 claims description 3
- 238000010586 diagram Methods 0.000 description 3
- 229910052754 neon Inorganic materials 0.000 description 1
- GKAOGPIIYCISHV-UHFFFAOYSA-N neon atom Chemical compound [Ne] GKAOGPIIYCISHV-UHFFFAOYSA-N 0.000 description 1
Landscapes
- Control Of Ac Motors In General (AREA)
- Emergency Protection Circuit Devices (AREA)
Description
図面は本考案の実施例を示すもので、第１図は
正相／逆相／欠相検出回路を送電線路に接続した
状態を示す配線図、第２図は該検出回路の電圧関
係を示すベクトル図、第３図は欠相の検出状態の
説明図である。
Ｍ……三相交流モータ、ｌｕ，ｌｖ，ｌｗ……
送電線路、Ｄｔ……正相／逆相／欠相検出回路、
Ｉｕ，Ｉｖ，Ｉｗ……入力端子、Ｎ０……接続中
心点、Ｒ１，Ｒ２，Ｒ３……抵抗、Ｃ……コンデ
ンサ、Ｌ……ネオン表示灯（報知回路）。
The drawings show an embodiment of the present invention, and Fig. 1 is a wiring diagram showing the state in which a positive phase/negative phase/open phase detection circuit is connected to a power transmission line, and Fig. 2 shows the voltage relationship of the detection circuit. The vector diagram and FIG. 3 are explanatory diagrams of the detection state of open phase. M... Three-phase AC motor, lu, lv, lw...
Power transmission line, Dt... Positive phase/negative phase/open phase detection circuit,
Iu, Iv, Iw...Input terminal, N0 ...Connection center point, R1 , R2 , R3 ...Resistor, C...Capacitor, L...Neon indicator light (notification circuit).
Claims (1)
接続されて三相交流モータの正相、逆相および欠
相を検出する回路であつて、 前記送電線路に個別に接続される３つの接続端
子と１つの接続中心点とを有し、１つの接続端子
と接続中心点とは２つの抵抗を直列接続してなる
分圧回路を介して結線され、他の１つの接続端子
と接続中心点とはコンデンサと抵抗を直列接続し
てなる進相回路を介して結線され、残りの接続端
子と接続中心点とは直結され、かつ、前記分圧回
路の両抵抗の接続点と前記進相回路のコンデンサ
と抵抗の接続点との間に両接続点の電圧を検出し
て報知する報知回路が接続されていることを特徴
とする三相交流モータの正相／逆相、／欠相検出
回路。[Scope of Claim for Utility Model Registration] A circuit that is connected to a power transmission line between a three-phase AC motor and its power source to detect the positive phase, negative phase, and open phase of the three-phase AC motor, It has three connection terminals and one connection center point that are individually connected, and one connection terminal and connection center point are connected via a voltage divider circuit formed by connecting two resistors in series, and the other One connection terminal and the connection center point are connected via a phase advancing circuit formed by connecting a capacitor and a resistor in series, and the remaining connection terminals and the connection center point are directly connected, and both resistors of the voltage dividing circuit are connected. A positive-phase/positive-phase motor for a three-phase AC motor, characterized in that an alarm circuit for detecting and reporting the voltage at both connection points is connected between the connection point of the phase advance circuit and the connection point of the capacitor and the resistor of the phase advance circuit. Reverse phase/open phase detection circuit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP7411889U JPH0314468U (en) | 1989-06-23 | 1989-06-23 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP7411889U JPH0314468U (en) | 1989-06-23 | 1989-06-23 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH0314468U true JPH0314468U (en) | 1991-02-14 |
Family
ID=31613534
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP7411889U Pending JPH0314468U (en) | 1989-06-23 | 1989-06-23 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0314468U (en) |
-
1989
- 1989-06-23 JP JP7411889U patent/JPH0314468U/ja active Pending
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