KR830001731Y1 - Overload prevention switch device - Google Patents

Overload prevention switch device Download PDF

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Publication number
KR830001731Y1
KR830001731Y1 KR2019820000009U KR820000009U KR830001731Y1 KR 830001731 Y1 KR830001731 Y1 KR 830001731Y1 KR 2019820000009 U KR2019820000009 U KR 2019820000009U KR 820000009 U KR820000009 U KR 820000009U KR 830001731 Y1 KR830001731 Y1 KR 830001731Y1
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KR
South Korea
Prior art keywords
power
load
relay
switch
transformer
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KR2019820000009U
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Korean (ko)
Inventor
배기천
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배기천
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Priority to KR2019820000009U priority Critical patent/KR830001731Y1/en
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Publication of KR830001731Y1 publication Critical patent/KR830001731Y1/en

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    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H9/00—Details of switching devices, not covered by groups H01H1/00 - H01H7/00
    • H01H9/54—Circuit arrangements not adapted to a particular application of the switching device and for which no provision exists elsewhere
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02H—EMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS
    • H02H9/00—Emergency protective circuit arrangements for limiting excess current or voltage without disconnection
    • H02H9/02—Emergency protective circuit arrangements for limiting excess current or voltage without disconnection responsive to excess current

Abstract

내용 없음.No content.

Description

과부하방지 스위치장치Overload prevention switch device

제1도는 본 고안의 회로도.1 is a circuit diagram of the present invention.

제2도는 본 고안의 작용상태도.2 is a working state of the present invention.

제3도는 본 고안의 작용상태도.3 is a working state of the present invention.

* 도면의 주요부분에 대한 부호의 설명* Explanation of symbols for main parts of the drawings

1,2,3 : 릴레이 4 : 정류기1,2,3 Relay 4: Rectifier

S1,S2: 입력스위치 S1', S2' : 연동스위치S 1 , S 2 : Input switch S 1 ', S 2 ': Interlock switch

PR1, PR2: 파워릴레이 DR1: 지연회로PR 1 , PR 2 : Power Relay DR 1 : Delay Circuit

In2, In3: 인버터In 2 , In 3 : Inverter

본 고안은 교류(AC) 전원무부하시에 트랜스의 무효전력의 손실을 막으며 출력측부하의 변동에 따라 입력과 부하방지 스위치장치에 관한 것이다.The present invention prevents the loss of reactive power of a transformer in the absence of AC power, and relates to an input and load protection switch device according to the variation of the output side load.

종래 교류전원으로 작용하는 부하장치에는 입력부스위치와 부하축스위치가 있어서 부하장치의 사용시에 부하측스위치를 오프시켜도 부하장치에는 무효전력이 인가된 상태이어서 입력부스위치를 오프하지 않는 한 무부하손실이 생기는 것이다.Conventionally, a load device acting as an AC power source has an input part switch and a load shaft switch, so even when the load side switch is turned off when the load device is used, reactive power is applied to the load device so that no load loss occurs unless the input part switch is turned off.

또한 이와같은 점을 감안한 절전스위치장치가 고안되어 부하측전원의 주파수보다 수백배 높은 주파수를 국부발진기로 발진시켜 결합트랜스를 통해 인가하고 부하장치의 온, 오프에 따라 변화하는 주파수 및 전압을 검출기로 검출하여 전원입력부 스위치를 온, 오프하도록 하였으나, 이와같은 절전스위치장치는 그 구성이 복잡할뿐만 아니라 부하측의 부하변동에 따라 입력전원을 가변시킬수 없는 결함이 있는 것이었다.In addition, a power-saving switch device has been devised, and oscillates hundreds of times higher than the frequency of the load-side power supply using a local oscillator and applies it through a coupling transformer. The power input switch was turned on and off, but the power saving switch device was not only complicated in configuration, but also had a defect that the input power could not be changed according to the load variation on the load side.

본 고안은 이와같은 점을 감안하여 부하측의 부후무부하시에 전원 입력스위치가 개폐될뿐만 아니라 부하측의 부하전원의 가변에 따라 전원 입력스위치 가변되도록 구성한 것으로, 이를 첨부도면에 의하여 상술하면 다음과 같다.The present invention is configured in such a way that the power input switch is opened and closed as well as the power input switch is variable according to the load power on the load side under no load after load on the load side.

본 고안의 입력측 트랜스(T1)의 일차측에 입력스위치(S1)(S2)가 릴레이(PR1)(PR2)에 따라 온, 오프되도록 구성하고 트랜스(T1)의 2차측에 검출트랜스(T2)를 구성하여 그의 출력이 인버터릴레이(2)(3)에 2차측의 전압에 따라 연결되도록 하고 트랜스(T1)의 1차측과 2차측에 정류기(4), 지연릴레이(1) 인버터릴레이(2)(3)를 구성시키어 된 것이다.On the primary side of the input side transformer (T 1 ) of the present invention, the input switch (S 1 ) (S 2 ) is configured to be turned on and off in accordance with the relay (PR 1 ) (PR 2 ) and to the secondary side of the transformer (T 1 ). The detection transformer T 2 is configured so that its output is connected to the inverter relays 2 and 3 according to the voltage on the secondary side, and the rectifier 4 and the delay relays on the primary and secondary sides of the transformer T 1 . 1) Inverter relays 2 and 3 are configured.

미설명부호 5는 트랜스의 2차측 미세조정 가변스위치이고, 1', 1"는 릴레이(1)의 접점, 2', 2"는 릴레이(2)의 접점, 3', 3"는 릴레이(3)의 접점이며, SW1, SW2는 부하스위치이다.Reference numeral 5 is a secondary fine-tuning variable switch of the transformer, 1 ', 1 "are the contacts of relay 1, 2', 2" are the contacts of relay 2, 3 ', 3 "are relays 3 ), And SW 1 and SW 2 are load switches.

이와같이 구성된 본 고안의 작용효과를 설명하면 다음과 같다.Referring to the effect of the present invention configured as described above are as follows.

제1도에서 출력측부하스위치(SW1)를 "온"시키면 입력전원은 정류기(4)를 통하여 정류된 24V의 전원이 접점(2')(1')에서 트랜스(T1)의 2차측에 공급되어 부하스위치(SW1)를 거쳐 접점(1')(3')에서 인버터(In2)에 인가되어 릴레이(2)가 동작하면 릴레이(2)의 접점(2')(2")이 접점(2')에서 접점(2")로 접속되어 트랜스(T1)의 2차측에 정류기(4)의 전원이 차단됨과 동시에 제2도와 같이 파워릴레이(PR1)가 동작하여 입력스위치(S1)와 연동된 스위치(S'1)가 동시에 접속되어서 입력전원이 트랜스(T1)를 통하여 부하에 전원을 공급하여 정류기(4)에 정류된 전원은 지연회로(DR1)의 릴레이(1)에 인가되어 일정시간 지연된후 릴레이(1)가 동작하여 릴레이(1)의 접점(1')(1")이 접점(1')에서 접점(1")에 접속되면서 정류기(4)의 정류된 전원은 트랜스(T1)의 2차측에서 차단되고 입력스위치(S1)를 통한 트랜스(T1)의 2차측 전원이 검출트랜스(T2)의 다이오드(D1)를 통하여 인버터(In2)에 인가되어 릴레이(2)가 계속 유지동작을 하게 되는 것이다.In FIG. 1, when the output side load switch SW 1 is turned "on", the input power is supplied to the secondary side of the transformer T 1 from the contacts 2 'and 1' by the 24V power rectified through the rectifier 4. Supplied to the inverter In 2 from the contacts 1 'and 3' via the load switch SW 1 and the relay 2 operates, the contacts 2 'and 2 " Connected from the contact 2 'to the contact 2 ", the power supply of the rectifier 4 is cut off on the secondary side of the transformer T 1 and the power relay PR 1 operates as shown in FIG. 1 ) and the switch (S ' 1 ) interlocked at the same time is connected to the input power supply to the load through the transformer (T 1 ) so that the rectified power to the rectifier (4) is relay 1 of the delay circuit (DR 1 ) After a certain time delay, the relay 1 operates so that the contacts 1 'and 1 "of the relay 1 are connected to the contact 1" at the contact 1' and the rectifier 4 is rectified. the power supply is cut off on the secondary side of the transformer (T 1) input Position is applied to the inverter (In 2) via a diode (D 1) of the secondary-side power detection transformer (T 2) of the transformer (T 1) through (S 1), the relay (2) is to be continued as a maintenance operation will be.

이와같은 부하전원 사용시(200W-300W)보다 부하 전원이 초가될 경우(300W이상) 즉 출력축부하스위치(SW2)가 "온"될때에는 검출트랜스(T2)의 설정전압보다 트랜스(T1)의 전원전압이 초가되어 다이오드(D2)를 통하여 인버터(In3)에 인가되고 릴레이(3)가 동작하면 릴레이(3)의 접점(3')(3")이 제3도와 같이 접점(3')에서 접점(3")로 접속되면서 인버터(In2)의 릴레이(2)와 지연회로(DR1)의 릴레이(1)에 전원이 차단되어 릴레이(1)(2)의 접점이 원위치로 환원되고 파워릴레이(PR2)가 동작하여 입력스위치(S2)와 연동된 스위치(S'2)가 동시에 접속되면서 트랜스(T1)의 1차측 입력이 가변되는 동작을 하게 되어 부하가 과부하가 되는 것을 방지할 수 있는 효과가 있는 것이다.When the load power is longer than 300W (200W-300W) when using such load power, that is, when the output shaft load switch (SW 2 ) is "on", the transformer (T 1 ) is higher than the set voltage of the detection transformer (T 2 ). When the power supply voltage of is applied to the inverter In 3 through the diode D 2 and the relay 3 is operated, the contacts 3 'and 3 "of the relay 3 become the contacts 3 as shown in FIG. ') Is connected to the contact point 3 "and the power is cut off from the relay 2 of the inverter In 2 and the relay 1 of the delay circuit DR 1 so that the contacts of the relay 1 and 2 return to their original positions. The power relay (PR 2 ) is reduced and the switch (S ' 2 ) interlocked with the input switch (S 2 ) is connected at the same time, so that the primary input of the transformer (T 1 ) is variable and the load is overloaded. There is an effect that can be prevented.

또한 부하 전력이 감소하면 상기와 같은 역동작을 하여 다시 파워릴레이(PR2)는 오프되고 파워릴레이(PR1)가 동작을 하게 되는 것이며, 무부하 상태(SW1, SW2오프 상태)일때에는 트랜스(T1)의 2차측이 개방되어 지연회로(DR1), 인버터(In2), (In3)에 전원을 공급할 수 없는 상태가 되어서 파워릴레이(PR1, PR2)가 작동할 수 없으므로 입력스위치(S1, S2)와 연동된 스위치(S1', S2')가 개방된 상태가 되어 무부하시의 무효전력의 손실을 방지할 수 있는 것이다.In addition, when the load power decreases, the reverse operation as described above is performed, and the power relay PR 2 is turned off again, and the power relay PR 1 is operated. In the no load state (SW 1 , SW 2 off state), Since the secondary side of (T 1 ) is opened and power cannot be supplied to the delay circuit DR 1 , inverter In 2 , and In 3 , the power relays PR 1 and PR 2 cannot operate. The switch (S 1 ', S 2 ') interlocked with the input switch (S 1 , S 2 ) is opened to prevent the loss of reactive power at no load.

이상에서와 같이 본 고안은 트랜스의 부하측의 부하, 무부하시에 전원 입력스위치가 개폐되어 무효전력의 손실을 막을 수 있을 뿐만 아니라 부하측의 부하전원의 가변에 따라 전원입력스위치가 가변되어 트랜스가 과부하 상태가 되는 것을 방지할 수 있는 효과가 있는 것이다.As described above, the present invention not only prevents the loss of reactive power by opening and closing the power input switch under load and no load on the transformer side, but also changes the power input switch according to the load power on the load side, so that the transformer is overloaded. There is an effect that can be prevented.

Claims (1)

트랜스(T1)의 부하측스위치를 온, 오프함에 따라 입력스위치가 개폐되게 한 것에 있어서, 정류기(4), 지연회로(DR1)의 릴레이(1), 인버터(In2, In3)의 릴레이(2)(3)사이에 검출트랜스(T2)와 파워릴레이(PR1)(PR2)를 구성하여서 부하측의 전원에 따라 입력스위치(S1)(S2)가 가변하도록 구성된 과부하방지 스위치 장치.According to the combination of the load-side switch of the transformer (T 1) on, so that the input switches open and close as the off, the relay of the rectifier (4), the relay (1), an inverter (In 2, In 3) of the delay circuit (DR 1) (2) (3) Between the detection transformer (T 2 ) and the power relay (PR 1 ) (PR 2 ) by configuring the input switch (S 1 ) (S 2 ) is variable according to the power of the load side overload protection switch Device.
KR2019820000009U 1982-01-04 1982-01-04 Overload prevention switch device KR830001731Y1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
KR2019820000009U KR830001731Y1 (en) 1982-01-04 1982-01-04 Overload prevention switch device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
KR2019820000009U KR830001731Y1 (en) 1982-01-04 1982-01-04 Overload prevention switch device

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KR830001731Y1 true KR830001731Y1 (en) 1983-09-09

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KR2019820000009U KR830001731Y1 (en) 1982-01-04 1982-01-04 Overload prevention switch device

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