JPH0269768U - - Google Patents
Info
- Publication number
- JPH0269768U JPH0269768U JP14914088U JP14914088U JPH0269768U JP H0269768 U JPH0269768 U JP H0269768U JP 14914088 U JP14914088 U JP 14914088U JP 14914088 U JP14914088 U JP 14914088U JP H0269768 U JPH0269768 U JP H0269768U
- Authority
- JP
- Japan
- Prior art keywords
- phase
- circuit
- voltage
- resistor
- capacitor
- 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
- 239000003990 capacitor Substances 0.000 claims description 3
- 238000012544 monitoring process Methods 0.000 claims description 3
- 238000010586 diagram Methods 0.000 description 1
Landscapes
- Emergency Protection Circuit Devices (AREA)
- Rectifiers (AREA)
Description
第１図は本考案の一実施例を説明するための構
成図である。
１……電圧不平衡監視回路、２……フイルタ部
、２ａ〜２ｃ……抵抗、２ｄ〜２ｆ……コンデン
サ、３……整流回路部、４……比較回路部、５…
…時限回路部、６……継電器回路部、７……空調
機、８……サイリスタ位相制御方式の整流器。
FIG. 1 is a configuration diagram for explaining one embodiment of the present invention. DESCRIPTION OF SYMBOLS 1... Voltage unbalance monitoring circuit, 2... Filter section, 2a-2c... Resistor, 2d-2f... Capacitor, 3... Rectifier circuit section, 4... Comparison circuit section, 5...
...Timer circuit section, 6...Relay circuit section, 7...Air conditioner, 8...Thyristor phase control type rectifier.
Claims (1)
部と、前記整流回路部の各相の出力電圧相互間を
比較して不平衡が所定の範囲をこえたとき出力信
号を送出する比較回路部と、前記比較回路部の出
力信号があらかじめ定められた時間継続したとき
制御信号を出力する時限回路部と、前記制御信号
により動作する継電器回路部とから構成され、交
流入力の各相相互間の電圧の不平衡状態を監視す
る電圧不平衡監視回路において、前記整流回路部
の前段に交流入力電源線の各相ごとに直列に挿入
された抵抗と、前記交流入力電源線の各相間に接
続されたコンデンサとからなるフイルタ部を備え
たことを特徴とする電圧不平衡監視回路。 A rectifier circuit unit that rectifies the voltage of each phase of a three-phase AC input, and a comparison circuit that compares the output voltages of each phase of the rectifier circuit unit and sends an output signal when the unbalance exceeds a predetermined range. a time limit circuit section that outputs a control signal when the output signal of the comparison circuit section continues for a predetermined period of time, and a relay circuit section that operates according to the control signal. In a voltage unbalance monitoring circuit that monitors a voltage unbalance state of the rectifying circuit, a resistor is inserted in series for each phase of the AC input power line before the rectifier circuit, and a resistor is connected between each phase of the AC input power line. A voltage unbalance monitoring circuit characterized by comprising a filter section consisting of a capacitor and a capacitor.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP14914088U JPH0269768U (en) | 1988-11-15 | 1988-11-15 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP14914088U JPH0269768U (en) | 1988-11-15 | 1988-11-15 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH0269768U true JPH0269768U (en) | 1990-05-28 |
Family
ID=31421099
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP14914088U Pending JPH0269768U (en) | 1988-11-15 | 1988-11-15 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0269768U (en) |
-
1988
- 1988-11-15 JP JP14914088U patent/JPH0269768U/ja active Pending