JPS6264279A - Star-delta change-over relay - Google Patents
Star-delta change-over relayInfo
- Publication number
- JPS6264279A JPS6264279A JP20205185A JP20205185A JPS6264279A JP S6264279 A JPS6264279 A JP S6264279A JP 20205185 A JP20205185 A JP 20205185A JP 20205185 A JP20205185 A JP 20205185A JP S6264279 A JPS6264279 A JP S6264279A
- Authority
- JP
- Japan
- Prior art keywords
- relay
- time
- transistor
- contactor
- connection
- 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.)
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Abstract
Description
【発明の詳細な説明】
〔発明の属する技術分野〕
本発明は誘導電動機をスターデルタ始動法により始動す
る際に用いるスターデルタ切換リレー装置に関する。DETAILED DESCRIPTION OF THE INVENTION [Field of the Invention] The present invention relates to a star-delta switching relay device used when starting an induction motor using a star-delta starting method.
三相誘導電動機の始動方法の一つとして固定巻線がデル
タ(以下Δと記す)結線の電動機をスター(以下Yと記
す)結線として始動し、運転状態まで加速する時間を経
過したのちに巻線を自動的にd結線に切換える装置が知
られている0このような切換えはタイマ回路を有するリ
レー装置と、このリレー装置上電磁接触器を組み合わせ
た電動機制御回路とが第3図、第5図に示すように接続
されて行われている。One way to start a three-phase induction motor is to start a motor with a fixed winding in delta (hereinafter referred to as Δ) connection as a star (hereinafter referred to as Y) connection, and after the time has elapsed for it to accelerate to the operating state, the winding is turned off. There is a known device that automatically switches the line to D connection.0 Such switching is accomplished by using a relay device with a timer circuit and a motor control circuit that combines an electromagnetic contactor on the relay device as shown in Figs. 3 and 5. The connections are made as shown in the figure.
従来のリレー装置1は第3図tこ示すように交流電源を
印加する電源端子2,3から安全抵抗4を介して全波整
流器5で整流した直流電圧を平滑するコンデンサ6の両
端に接続して駆動される。コンデンサ6の両端には抵抗
7とトランジスタ8の直列回路とトランジスタ9とメー
ク接点10&を有するY結線用リレー(以下Y IJシ
レー略称する)10の直列口iとY IJシレー0の釈
放用時限回路11が並列に接続され、゛トランジスタ8
のベースには時限回路11の出力端が接続され、トラン
ジスタ9のベースには抵抗7とトランジスタ8の接続点
が接続されているo12はY リに−と並列に接続され
たサージ防止用ダイオードである。抵抗7と並列に切換
接点13aを有するΔ結線用リレー(以下Jリレーと略
称する)13とトランジスタ14の直列回路と、夕・イ
マ回路15が接続され、タイマ回路15の出力端がトラ
ンジスタ14のベースに接続されている◇16はΔlJ
レー13と並列に接続されたサージ防止用ダイオードで
ある◇Δリレー13の切換接点13纂は切換接点が端子
17に、被切換接点のメーク側が端子18に、ブレーク
側がYリレー10のメーク接点10aの一端にそれぞれ
接続され、メーク接点10 mの他端は端子191こ接
続されている。As shown in Figure 3, the conventional relay device 1 connects power supply terminals 2 and 3 for applying AC power through a safety resistor 4 to both ends of a capacitor 6 for smoothing the DC voltage rectified by a full-wave rectifier 5. It is driven by At both ends of the capacitor 6, there is a series circuit of a resistor 7 and a transistor 8, a transistor 9, and a make contact 10 and a series port i of a Y connection relay (hereinafter abbreviated as Y IJ relay) 10 and a release time circuit of Y IJ relay 0. 11 are connected in parallel, 'transistor 8
The output terminal of the time limit circuit 11 is connected to the base of the transistor 9, and the connection point between the resistor 7 and the transistor 8 is connected to the base of the transistor 9. O12 is a surge prevention diode connected in parallel with Y-. be. A series circuit of a delta connection relay (hereinafter referred to as J relay) 13 having a switching contact 13a in parallel with a resistor 7 and a transistor 14 is connected to an evening/timer circuit 15, and the output end of the timer circuit 15 is connected to the transistor 14. ◇16 connected to the base is ΔlJ
The switching contact 13 of the Δ relay 13 is a surge prevention diode connected in parallel with the relay 13. The switching contact is connected to the terminal 17, the make side of the switched contact is connected to the terminal 18, and the break side is the make contact 10a of the Y relay 10. The make contact 10m is connected to one end of each terminal, and the other end of the make contact 10m is connected to a terminal 191.
このリレー装置1の動作をwc4図に示すタイムチャー
トを参照しながら説明する。時刻tつに電源が印加され
ると時限回路11が始動すると同時にトランジスタ9が
導通し、Yリレー1oが吸引動作し、メーク接点10m
を閉じる。このとき抵抗7の電流は小さいから、この両
端の電圧は低くタイマ回路15は始動せず、トランジス
タ14も導通しない。したがってΔリレー13は吸引動
作しない。所定時限Ts後時刻t、に時限回路11が信
号を出してトランジスタ8が導通する。するとトランジ
スタ9は不導通になりYリレー10は釈放され接点10
mを開くoトランジスタ8が導通するとタイマ回路15
が始動し、YIJレー10が釈放されて時間ΔTD後の
時刻t!にタイマ回路15が信号を出してトランジスタ
14を導通する。したがって、Δリレー13が吸引動作
し、接点13aが切換わる。時刻t、に電源を除けば元
の状態に戻る。The operation of this relay device 1 will be explained with reference to the time chart shown in Figure WC4. When power is applied at time t, the timer circuit 11 starts and at the same time the transistor 9 becomes conductive, the Y relay 1o performs a suction operation, and the make contact 10m
Close. At this time, since the current in the resistor 7 is small, the voltage across it is low and the timer circuit 15 does not start, and the transistor 14 does not conduct. Therefore, the Δ relay 13 does not perform the suction operation. At time t after a predetermined time period Ts, the time limit circuit 11 outputs a signal and the transistor 8 becomes conductive. Then, transistor 9 becomes non-conductive, Y relay 10 is released, and contact 10
When transistor 8 becomes conductive, timer circuit 15 opens.
starts, YIJ Ray 10 is released, and at time t! after time ΔTD! The timer circuit 15 outputs a signal to make the transistor 14 conductive. Therefore, the Δ relay 13 performs a suction operation, and the contact 13a is switched. If the power is removed at time t, the original state is restored.
次に第5図において、三相誘導電動@21は3個の固定
巻線を有し、各巻線の一端は始動用電磁接触器22.過
電流リレー23.配線用遮断器24を介して交流電源R
8Tに接続され、他端はY結線用電磁接触器(以下Y接
触器と略称する)25を介して共通に接続され、このY
接触器25を閉じるとY結線にされる。また3個の巻線
のうち1個の巻線の一端と他の巻線の他端とがそれぞれ
Δ結線用電磁接触器(以下Δ接触器と略称する)26を
介して順次接続されている。このそれぞれの電磁接触器
22.25.26を動作させるそれぞれのコイル22鼻
、25a、26mとリレー装置1とその接点が次のよう
に接続されている。すなわちコイル221LはYgI触
器25の補助メータ接点25bと電磁接触器22の補助
メーク接点22bを並列に接続した回路に直列に接続さ
れ、コイル25mはΔリレー13の切換接点13&のブ
レーク側とYリレー10のメーク接点10mとΔ接触6
26のブレーク接点26bとともに直列に接続され、コ
イル26&はΔリレー13の切換接点13aのメーク側
とΔ接触器25&のメーク接点25c2ともに直列に接
続され、これらの直列回路とリレー装置1が総て並列に
接続されて、補助スイッチ27と過電流リレー23のブ
レーク接点23畠を介して電源に接続されている。Next, in FIG. 5, the three-phase induction electric motor @21 has three fixed windings, and one end of each winding is connected to a starting electromagnetic contactor 22. Overcurrent relay 23. AC power supply R via the molded circuit breaker 24
8T, and the other end is commonly connected via a Y-connection electromagnetic contactor (hereinafter abbreviated as Y-contactor) 25.
When the contactor 25 is closed, a Y connection is established. Further, one end of one of the three windings and the other end of the other winding are sequentially connected via a delta connection electromagnetic contactor (hereinafter abbreviated as delta contactor) 26. . The respective coils 22, 25a, 26m that operate the respective electromagnetic contactors 22, 25, 26 are connected to the relay device 1 and its contacts as follows. That is, the coil 221L is connected in series to a circuit in which the auxiliary meter contact 25b of the YgI contactor 25 and the auxiliary make contact 22b of the electromagnetic contactor 22 are connected in parallel, and the coil 25m is connected to the break side of the switching contact 13 & of the Δ relay 13 and the Y Make contact 10m of relay 10 and Δ contact 6
The coil 26& is connected in series with the make side of the switching contact 13a of the Δ relay 13 and the make contact 25c2 of the Δ contactor 25&, and these series circuits and the relay device 1 are connected in series. They are connected in parallel and connected to a power source via an auxiliary switch 27 and a break contact 23 of an overcurrent relay 23.
リレー装置1による電動機21の切換動作を説明すると
、配線用遮断器24を閉じ補助スイッチ27を閉じると
リレー装置1の接点10aが閉じコイル251に通電さ
れるからY接触器25が閉じ、電動機21がY結線とさ
れる。このとき接点25bが閉じコイル22 a (C
通電されて電磁接触器22が閉じ電動機21が始動する
。また接点25Cが開いてΔ接触器26が閉じないよう
にされる。To explain the switching operation of the motor 21 by the relay device 1, when the circuit breaker 24 is closed and the auxiliary switch 27 is closed, the contact 10a of the relay device 1 is closed and the coil 251 is energized, so the Y contactor 25 is closed and the motor 21 is switched. is assumed to be Y-connected. At this time, the contact 25b closes and the coil 22a (C
When energized, the electromagnetic contactor 22 closes and the electric motor 21 starts. Further, the contact point 25C is opened and the Δ contactor 26 is prevented from closing.
を磁接触器22が閉じると凄点22bが閉じ電磁接触器
22は自己保持する。電動機21がY結線の全速)ζ達
した時点で時限回路11が信号を出してトランジスタ8
が導通し、Y’lJレー10が釈放され、接点10aが
開くからYli触器25が開き、接点25cが閉じる。When the magnetic contactor 22 closes, the closing point 22b closes and the electromagnetic contactor 22 self-holds. When the motor 21 reaches the full speed of the Y connection, the timer circuit 11 outputs a signal and the transistor 8
conducts, the Y'lJ relay 10 is released, and the contact 10a opens, so the Yli contactor 25 opens and the contact 25c closes.
トランジスタ8が導通するとタイマ回路15が始動し、
時間JTD後にΔリレー13が吸引動作して、接点13
aが切換わる。When transistor 8 becomes conductive, timer circuit 15 starts,
After time JTD, the Δ relay 13 performs a suction operation, and the contact 13
a is switched.
このとき接点25cは閉じているからコイル26aに通
電されΔ接触器26が閉じて電動機21はΔ結線に接続
され運転を続ける。At this time, since the contact 25c is closed, the coil 26a is energized, the Δ contactor 26 is closed, and the motor 21 is connected to the Δ connection and continues operation.
ところでこのようなY−Δ結線の電動機を揚水ポンプな
どに用い、第5図の補助スイッチ27をフロートスイッ
チ27に代えて水槽の水面高さをとらえ、このフロート
スイッチ27で’?tMi21の始動停止を行う場合、
スイッチ27が開いて、Δリレー13が開いてΔ接触器
が確実に開いてからスイッチ27が再投入されればよい
が、フロートス・イツチは水面の駆動などに対して弱く
、この時間がff1Jえば1g4図に示す時刻t、から
時刻t、のように時間ΔTXと短いか、時刻t、から時
刻t、のように開閉を頻繁に繰返した場合、電動機21
はΔ接触器26の遮断とY接触器25の投入でΔ結線か
らYtiHlに切換えられるが、このときΔ接触器26
の遮断時のアークが完全に消滅する以前にY接触器25
が投入されることがあり、両接触器25゜26で相間短
絡となり、この短絡電流で辿断器24の損傷や両接触器
25.26の接点部の溶着が発生するなどの欠点がある
。また、時刻を丁から時刻tSのように時限回路11が
ノイズなどの1響でトランジスタ8を不導通にした場合
、タイマ回路15がリセットする。この場合電源は投入
された状態であるからY iJシレー0が極短時間ΔT
0で吸引動作し、上述と同じ故障を起こすという欠点が
ある〇この対策として第3図に破線で示すようJこΔリ
レー13と並列にコンデンサ20を接続し、を源が遮断
したのち、Δリレー13が所定時1%l’l遅れて釈放
されるようにした回路もあるが、フィッグに対しては完
全な対策ではない。By the way, when a motor with such a Y-Δ connection is used in a water pump or the like, the auxiliary switch 27 in FIG. When starting and stopping tMi21,
The switch 27 should be turned on again after the switch 27 is opened, the Δ relay 13 is opened, and the Δ contactor is surely opened, but the float switch is vulnerable to water surface movement, and if this time is ff1J, If the time ΔTX is short, as shown in Figure 1g4, or if the opening and closing is repeated frequently, as from time t to time t, the motor 21
is switched from the Δ connection to YtiHl by cutting off the Δ contactor 26 and turning on the Y contactor 25, but at this time, the Δ contactor 26
Y contactor 25 before the arc at the time of interruption is completely extinguished.
This causes a short circuit between the two contactors 25 and 26, and this short circuit current causes damage to the tracer 24 and welding of the contact portions of the contactors 25 and 26. Further, when the time limit circuit 11 makes the transistor 8 non-conductive due to noise or the like from time t to time tS, the timer circuit 15 is reset. In this case, since the power is on, Y
There is a drawback that the suction operation occurs at 0, causing the same failure as described above. As a countermeasure for this, a capacitor 20 is connected in parallel with the Δ relay 13 as shown by the broken line in FIG. There is a circuit in which the relay 13 is released after a 1% l'l delay at a predetermined time, but this is not a complete countermeasure against Figg.
本発明は電源の再投入が急速に行われても、ノイズが浸
入しても電動機のY−Δ結線の切換えが確実に行われる
Y−Δ切換リレー装置を提供することを目的とする。SUMMARY OF THE INVENTION It is an object of the present invention to provide a Y-Δ switching relay device that can reliably switch the Y-Δ connection of a motor even if the power is rapidly turned on again or noise intrudes.
本発明は電源が投入されると吸引動作し所定時間後動作
されるYリレーと、このYリレーが釈放された後吸引動
作するΔリレーとを備え、この両リレーの動作により誘
導電動機をY結線からΔ結線に切換えるY−Δ切換リレ
ー装置において、前記Y IJシレー電源が投入されて
所定時間後動作するタイマ回路で吸引動作するもので、
電源が遮断されたのち再投入されたとき電動機のΔ接触
器が確実に開くまでY IJシレー吸引動作、したがっ
てY接触器の投入を遅らせて電源の短絡を防止するもの
である。The present invention includes a Y relay that performs a suction operation when the power is turned on and operates after a predetermined time, and a Δ relay that performs a suction operation after the Y relay is released, and the induction motor is Y-connected by the operation of both relays. In the Y-Δ switching relay device for switching from to Δ connection, the Y-IJ relay is operated by a timer circuit that operates after a predetermined time after the power is turned on, and the suction operation is performed.
When the power is turned on again after being cut off, the Y/IJ suction operation, and therefore the turning on of the Y contactor, is delayed until the Δ contactor of the motor is reliably opened, thereby preventing a short circuit in the power supply.
(発明の実施例〕
本発明の実施例を第1図、第2図と第5図に基づいて詳
細に説明する0なお、第1図で第3因と同一の役目をす
る部品については同一の符号を付してその説明を省略す
る。第1図において、直流電圧を得る整流器5、コンデ
ンサ6は従来と同様であり、リレー装置1はコンデンサ
6の両端に接続して駆動される。コンデンサ6の両端に
は従来と同様に抵抗7とトランジスタ8の直列回路、ト
ランジスタ9とYリレー10の直列回路、時限回%ll
が並列に接続されているが、トランジスタ9とY IJ
シレー0の直列回路はY IJシレー0が電源の十甑側
にトランジスタ9が一極側にそれぞれjd絖されている
・。そしてこのトランジスタ9のベースにタイマ回[3
0の出力端が接続されている点が従来のものと大いに異
なる。タイマ回路3゜はトランジスタ8に並列に接続さ
れたツェナダイオード31、抵抗32と遅延コンデンサ
33の直列回路、抵抗32とコンデンサ33の接続点と
トランジスタ9のベースに接続されたツェナダイオード
34からなり、トランジスタ90ベース−Xミッタ間に
抵抗35が接続されている。Δリレー13は従来と同様
にトランジスタ14と直列1こ接続されて抵抗7に並列
に接続゛され、トランジスタ14のベースには抵、抗7
と並列に接続されたタイマ回路15の出力端が接続され
ている。両ダイオード12.16は従来と同様にそれぞ
れ各リレー10.13と並列に接続され、各リレー10
.13の接点10a、13mは従来と同様に各端子17
゜18.19の間に接続されでいる。そしてこのリレー
装置1は従来のものと全く同様に第5図薯こ示す電動機
制御回路に接続して使用される。(Embodiment of the invention) An embodiment of the invention will be explained in detail based on FIG. 1, FIG. 2, and FIG. 1, a rectifier 5 and a capacitor 6 for obtaining a DC voltage are the same as those of the conventional one, and a relay device 1 is connected to both ends of the capacitor 6 and driven. At both ends of 6, there is a series circuit of resistor 7 and transistor 8, a series circuit of transistor 9 and Y relay 10, and a time limit %ll as in the conventional case.
are connected in parallel, but transistor 9 and Y IJ
In the series circuit of Shire 0, Y IJ Shire 0 is connected to the power supply side and transistor 9 is connected to one pole side. The base of this transistor 9 is connected to the timer cycle [3
It differs greatly from the conventional one in that the 0 output end is connected. The timer circuit 3° consists of a Zener diode 31 connected in parallel to the transistor 8, a series circuit of a resistor 32 and a delay capacitor 33, a Zener diode 34 connected to the connection point of the resistor 32 and the capacitor 33, and the base of the transistor 9. A resistor 35 is connected between the base of the transistor 90 and the X-mitter. The Δ relay 13 is connected in series with the transistor 14 and in parallel with the resistor 7, as in the conventional case.
The output terminal of a timer circuit 15 connected in parallel with the . Both diodes 12.16 are connected in parallel with each relay 10.13, respectively, as in the conventional case.
.. 13 contacts 10a and 13m are connected to each terminal 17 as before.
It is connected between 18 and 19 degrees. This relay device 1 is used by being connected to the motor control circuit shown in FIG. 5 in exactly the same way as the conventional one.
このリレー装置1の動作はタイマ回路3o以外は従来と
同様であるから、タイマ回路3oのみについて説明する
と、電源が投入されると抵抗7を介して電源が印加され
、ツェナダイオード31が導通する。またコンデンサ3
3はツェナダイオード31のツェナ電圧で抵抗32を介
して充電される。そしてコンデンサ33の電圧が一定値
に達するとツェナダイオード34が導通し、トランジス
タ9のベースに信号を与える。コンデンサ33は常にツ
ェナダイオード31のツェナ電圧で充電されるからこの
タイマ回路30の動作は正確である。Since the operation of this relay device 1 is the same as the conventional one except for the timer circuit 3o, only the timer circuit 3o will be explained. When the power is turned on, power is applied through the resistor 7, and the Zener diode 31 becomes conductive. Also capacitor 3
3 is charged via a resistor 32 with the Zener voltage of the Zener diode 31. When the voltage of the capacitor 33 reaches a certain value, the Zener diode 34 becomes conductive and provides a signal to the base of the transistor 9. Since the capacitor 33 is always charged with the Zener voltage of the Zener diode 31, the operation of the timer circuit 30 is accurate.
次にこのリレー装置1による電動機の制御動作を第2囚
に示すタイムチャートと第5図に示す電動機制御回路を
参照しながら説明する。まず配線用遮断器24を閉じ、
時刻toに補助スイッチ27を閉じると、時限回路11
とタイマ回路30が始動し、所定時間ΔTs経過後にY
’Jレー10が吸引動作し接点10aが閉じるからY接
触器25が動作して電動機21をY結線に接続する。こ
のとき接点25bが閉じて電磁接触器22を閉じ、電動
機21を始動し、電磁接触器22は接点22bで自己保
持する◇時at・から所定時間Ts経過すると時刻t1
に時限回路11からの信号でトランジスタ8が導通ずる
0このときタイマ回路30の電圧は開路されるからトラ
ンジスタ9は不導通になり、Y IJシレーOは釈放さ
れ、接点10&が開き、Y接触器25も開く。シたがっ
て電動機21は停止しようとするがトランジスタ8が導
通したときタイマ回路15が始動し、時間jTD&にΔ
リレー13が吸引動作して接点13mが切換わりΔ接触
器26が閉じて電動機21はΔ結線として運転を続ける
。Next, the control operation of the motor by this relay device 1 will be explained with reference to the time chart shown in the second case and the motor control circuit shown in FIG. First, close the circuit breaker 24,
When the auxiliary switch 27 is closed at time to, the time limit circuit 11
The timer circuit 30 starts, and after the predetermined time ΔTs has passed, Y
'The J-ray 10 performs a suction operation and the contact 10a closes, so the Y contactor 25 operates and connects the motor 21 to the Y connection. At this time, the contact 25b closes, the electromagnetic contactor 22 is closed, the electric motor 21 is started, and the electromagnetic contactor 22 is self-held at the contact 22b. ◇When a predetermined time Ts has elapsed from time at, time t1
At this time, the voltage of the timer circuit 30 is opened, so the transistor 9 becomes non-conductive, the Y IJ relay O is released, the contact 10 & is opened, and the Y contactor is turned on. 25 also opens. Therefore, the motor 21 tries to stop, but when the transistor 8 becomes conductive, the timer circuit 15 is started and the time jTD& is increased by Δ.
The relay 13 performs a suction operation, the contact point 13m switches, the Δ contactor 26 closes, and the motor 21 continues to operate as a Δ connection.
ここでもし、時刻t、にスイッチ27が開き瞬時間jT
l後の時刻t4に再投されたとしてもY IJシレー0
はそれよりΔT3遅れて閉じるからY接触器25が閉じ
るまでの少なくとも時間ΔTsだけ遅れ実際にはΔTl
+ΔTa遅れる。この時間はΔ接触器26が開いて、そ
の時のアークも消滅した時間であり、Y接触器25が閉
じても両接触器25.26で電源が短絡されるおそれは
ない。また、たとえ時刻t1 から時刻を藝におけるよ
うにスイッチ27が短時間に開閉を頻繁に繰返したり、
時刻t、がら時刻taのようにノイズなどの影響でタイ
マ回路15がリセットし、Δリレー13が開いてもYリ
レー10は必ずΔT6だけ軽過しないと吸引動作しない
から、Y接触器25とΔ接触器26で電源を短絡するお
それはない。Here, if the switch 27 opens at time t, the instantaneous time jT
Even if it is re-thrown at time t4 after l, Y IJ sill 0
closes ΔT3 later than that, so the time until the Y contactor 25 closes is delayed by at least time ΔTs, and actually ΔTl
+ΔTa delayed. This time is the time when the Δ contactor 26 is opened and the arc at that time is also extinguished, and even if the Y contactor 25 is closed, there is no risk that the power supply will be short-circuited between both contactors 25 and 26. Furthermore, even if the switch 27 frequently repeats opening and closing in a short period of time, such as changing the time from time t1,
Even if the timer circuit 15 is reset due to the influence of noise or the like at time t and time ta, and the Δ relay 13 is opened, the Y relay 10 will not operate the suction operation unless it is lightened by ΔT6, so the Y contactor 25 and Δ There is no risk of short-circuiting the power supply with the contactor 26.
以上述べたように本発明によればリレー装置のY IJ
シレー電源投入後必す所定時間遅れて吸引動作するよう
にして、Y接触器の投入動作を遅らせだから、たとえ、
電源が瞬時停電したり、短時間の停電・復電が繰返され
たり、Δ結線の運転中Δリレーが釈放されても、Δ接触
器からY接触器へ短時間に切換えられて、Δ接触器のア
ークなどで電源の短絡を起こすことがなく、安全であり
、信頼性が高い。As described above, according to the present invention, Y IJ of the relay device
Even if the suction operation is delayed by a predetermined time after the power is turned on, and the Y contactor closing operation is delayed, even if
Even if there is a momentary power outage, repeated short power outages and power restorations, or the Δ relay is released during Δ connection operation, the Δ contactor is switched to the Y contactor in a short time, and the Δ contactor It is safe and highly reliable, as it does not cause short circuits due to arcing.
第1図は本発明によるスターデルタ切換リレー装置の一
実施例を示す結線図、第2図は第1図のリレー装置の動
作を示すタイムチャート、第3図は従来のスターデルタ
切換リレー装置の一例を示す結線図、第4図は@3図の
リレー装置の動作を示すタイムチャート、第5図は第1
図または第3図のリレー回路でスターデルタ切換を行う
電動機制御回路の結線図である。
10−Yリレー、13・Δリレー、3o ・タイマ回路
。
第2図FIG. 1 is a wiring diagram showing an embodiment of the star-delta switching relay device according to the present invention, FIG. 2 is a time chart showing the operation of the relay device of FIG. 1, and FIG. 3 is a diagram showing the operation of the conventional star-delta switching relay device. A wiring diagram showing an example, Figure 4 is a time chart showing the operation of the relay device shown in Figure 3, and Figure 5 is a diagram showing the operation of the relay device shown in Figure 1.
FIG. 4 is a wiring diagram of a motor control circuit that performs star-delta switching using the relay circuit shown in FIG. 10-Y relay, 13・Δ relay, 3o・timer circuit. Figure 2
Claims (1)
るスター結線用リレーと、このスター結線用リレーが釈
放された後吸引動作するデルタ結線用リレーとを備え、
この両リレーの動作により誘導電動機をスター結線から
デルタ結線に切換えるスターデルタ切換リレー装置にお
いて、前記スター結線用リレーは電源が投入されて所定
時間後動作するタイマ回路で吸引動作することを特徴と
するスターデルタ切換リレー装置。1) Equipped with a star connection relay that performs a suction operation when the power is turned on and releases after a predetermined time, and a delta connection relay that performs a suction operation after the star connection relay is released.
In the star-delta switching relay device that switches the induction motor from star connection to delta connection by the operation of both relays, the star connection relay is characterized in that the star connection relay is activated by a timer circuit that operates after a predetermined time after the power is turned on. Star-delta switching relay device.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP20205185A JPS6264279A (en) | 1985-09-12 | 1985-09-12 | Star-delta change-over relay |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP20205185A JPS6264279A (en) | 1985-09-12 | 1985-09-12 | Star-delta change-over relay |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS6264279A true JPS6264279A (en) | 1987-03-23 |
Family
ID=16451122
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP20205185A Pending JPS6264279A (en) | 1985-09-12 | 1985-09-12 | Star-delta change-over relay |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS6264279A (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2009136059A (en) * | 2007-11-29 | 2009-06-18 | Hitachi Industrial Equipment Systems Co Ltd | Star-delta starter |
-
1985
- 1985-09-12 JP JP20205185A patent/JPS6264279A/en active Pending
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2009136059A (en) * | 2007-11-29 | 2009-06-18 | Hitachi Industrial Equipment Systems Co Ltd | Star-delta starter |
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