JPS61126795U - - Google Patents
Info
- Publication number
- JPS61126795U JPS61126795U JP995485U JP995485U JPS61126795U JP S61126795 U JPS61126795 U JP S61126795U JP 995485 U JP995485 U JP 995485U JP 995485 U JP995485 U JP 995485U JP S61126795 U JPS61126795 U JP S61126795U
- Authority
- JP
- Japan
- Prior art keywords
- circuit
- short
- contactor
- relay
- circuit contactor
- 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
Landscapes
- Motor And Converter Starters (AREA)
Description
第１図は本考案の一実施例の電動機起動回路、
第２図は電動機起動特性に対するサーマルリレー
動作特性図、第３図は従来のサーマルリレー短絡
用電磁接触器を備えた電動機起動回路である。
１…主回路用電磁接触器（８３）、２…サーマ
ルリレー短絡用電磁接触器（（８８Ｂ）、３…サ
ーマルリレー、３ａ…サーマルリレー接点、４…
８８のコイル、４ａ…８８のａ接点、４ｂ…８８
のｂ接点、５…補助リレー（８８ＢＺ）、５ａ…
８８ＢＺのａ接点、６…８８Ｂのコイル、６ａ…
８８Ｂのａ接点、７…タイマー（ＴＢ）、７ａ…
ＴＢのａ接点、８…変流器、９…電流リレー（Ｃ
Ｒ）、９ａ…ＣＲのａ接点、９ｂ…ＣＲのｂ接点
、１０…補助リレー（Ｘ）、１０ｂ…Ｘのｂ接点
、１１…押ボタンスイツチ。
FIG. 1 shows a motor starting circuit according to an embodiment of the present invention.
FIG. 2 is a thermal relay operating characteristic diagram for motor starting characteristics, and FIG. 3 is a motor starting circuit equipped with a conventional thermal relay short-circuiting electromagnetic contactor. 1... Main circuit electromagnetic contactor (83), 2... Thermal relay short circuit electromagnetic contactor ((88B), 3... Thermal relay, 3a... Thermal relay contact, 4...
88 coils, 4a...88 a contacts, 4b...88
B contact, 5... Auxiliary relay (88BZ), 5a...
88BZ a contact, 6...88B coil, 6a...
88B a contact, 7... timer (TB), 7a...
TB a contact, 8...Current transformer, 9...Current relay (C
R), 9a...CR a contact, 9b...CR b contact, 10...auxiliary relay (X), 10b...X b contact, 11...push button switch.
Claims (1)
し、設定時間後主回路接触器を投入し、短絡接触
器を開放する事によりサーマルリレーを回路に投
入する電動機起動回路において、電流検出のため
の変流器とそれにつながる電流リレーを設け、設
定時間後でも過電流が流れ続けている場合は、こ
れを電流リレーにて検出し、主回路接触器の投入
を防止すると共に、短絡用接触器を開放し、電動
機を停止させることを特徴とする電動機起動回路
。 In a motor starting circuit, the thermal relay is short-circuited with a short-circuit contactor at startup, the main circuit contactor is turned on after a set time, and the thermal relay is connected to the circuit by opening the short-circuit contactor. A current transformer and a current relay connected to it are installed, and if overcurrent continues to flow even after a set time, the current relay detects this and prevents the main circuit contactor from closing, and also switches on the short-circuit contactor. An electric motor starting circuit characterized in that it opens and stops the electric motor.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP995485U JPS61126795U (en) | 1985-01-29 | 1985-01-29 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP995485U JPS61126795U (en) | 1985-01-29 | 1985-01-29 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS61126795U true JPS61126795U (en) | 1986-08-08 |
Family
ID=30490665
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP995485U Pending JPS61126795U (en) | 1985-01-29 | 1985-01-29 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS61126795U (en) |
-
1985
- 1985-01-29 JP JP995485U patent/JPS61126795U/ja active Pending
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