KR20010099281A - Apparatus for measuring insulation resistance of motor - Google Patents
Apparatus for measuring insulation resistance of motor Download PDFInfo
- Publication number
- KR20010099281A KR20010099281A KR1020010057868A KR20010057868A KR20010099281A KR 20010099281 A KR20010099281 A KR 20010099281A KR 1020010057868 A KR1020010057868 A KR 1020010057868A KR 20010057868 A KR20010057868 A KR 20010057868A KR 20010099281 A KR20010099281 A KR 20010099281A
- Authority
- KR
- South Korea
- Prior art keywords
- motor
- insulation resistance
- circuit
- voltage
- oscillation
- Prior art date
Links
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R27/00—Arrangements for measuring resistance, reactance, impedance, or electric characteristics derived therefrom
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R31/00—Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
- G01R31/34—Testing dynamo-electric machines
- G01R31/346—Testing of armature or field windings
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R31/00—Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
- G01R31/12—Testing dielectric strength or breakdown voltage ; Testing or monitoring effectiveness or level of insulation, e.g. of a cable or of an apparatus, for example using partial discharge measurements; Electrostatic testing
- G01R31/1227—Testing dielectric strength or breakdown voltage ; Testing or monitoring effectiveness or level of insulation, e.g. of a cable or of an apparatus, for example using partial discharge measurements; Electrostatic testing of components, parts or materials
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R31/00—Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
- G01R31/34—Testing dynamo-electric machines
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Tests Of Circuit Breakers, Generators, And Electric Motors (AREA)
- Measurement Of Resistance Or Impedance (AREA)
Abstract
본 발명은 모터의 절연저항 측정장치에 관한 것으로, 더욱 상세하게는 모터의 가동 전에 절연저항값을 측정하여 그 측정값이 설정된 절연저항값보다 클 때 모터의 가동을 인가하지만 설정된 절연저항값보다 작으면 모터의 전원인가를 차단함으로써 모터의 손상을 방지하는 모터의 절연저항 측정장치를 제공함에 그 목적이 있다.The present invention relates to an insulation resistance measuring apparatus of a motor. More specifically, the insulation resistance value is measured before the motor is started, and the operation of the motor is applied when the measured value is larger than the set insulation resistance, but less than the set insulation resistance. It is an object of the present invention to provide an insulation resistance measuring apparatus of a motor that prevents damage to the motor by cutting off the power supply of the motor.
그리고, 상기한 목적을 달성하기 위하여 본 발명은 모터의 절연저항 측정장치에 있어서, 저항 R14,R13을 통해 콘텐서 C12에 충전된 후, 구형파발진IC(11)에 입력되어 구형파를 발진하는 교류발진회로(10)와; 상기 교류발진회로(10)의 교류발진전압을 브리더저항 R21,R22를 통해 분배하되, 모터코일(1)의 절연저항과 상기 브리더저항 R22의 양단에 걸리는 전압이 비례하도록 구성되는 전압분배회로(20)와; 다이오드 D31과 콘덴서 C32를 이용하여 상기 전압분배회로(20)의 교류구형파신호를 직류신호로 변환하는 정류회로(30)와; 상기 정류회로(30)에서 출력되는 직류전압값을 저항 R42를 통해 증폭기(31)에 입력하면서 궤환저항 R43을 통해 궤환하여 증폭하는 증폭회로(40)와; 상기 증폭회로(40)로부터 출력되는 아날로그신호를 디지탈신호로 변환하는 A/D변환부(50)와; 상기 A/D변환부(50)의 디지탈신호를 디스플레이하면서 설정전압값과 비교 연산하여 모터의 전원공급에 대한 인가여부를 제어하는 제어부(60);를 포함하는 것을 특징으로 하는 모터의 절연저항 측정장치를 제공한다.In order to achieve the above object, the present invention provides a device for measuring insulation resistance of a motor, which is charged to the capacitor C12 through the resistors R14 and R13, and is then input to the square wave oscillation IC 11 to oscillate square waves. Circuit 10; The AC oscillation voltage of the AC oscillation circuit 10 is distributed through the breather resistors R21 and R22, but the voltage distribution circuit 20 is configured such that the insulation resistance of the motor coil 1 and the voltage applied to both ends of the breather resistor R22 are proportional to each other. )Wow; A rectifier circuit 30 for converting the AC square wave signal of the voltage distribution circuit 20 into a DC signal using a diode D31 and a capacitor C32; An amplifying circuit 40 for inputting the DC voltage value output from the rectifier circuit 30 to the amplifier 31 through the resistor R42 and feeding back the feedback voltage through the feedback resistor R43; An A / D converter 50 for converting an analog signal output from the amplification circuit 40 into a digital signal; Insulation resistance measurement of the motor, characterized in that it comprises; and the control unit 60 for controlling the application of the power supply of the motor by comparing with the set voltage value while displaying the digital signal of the A / D conversion unit 50; Provide the device.
Description
본 발명은 모터의 절연저항 측정장치에 관한 것으로, 더욱 상세하게는 모터의 가동 전에 측정된 절연저항값에 따라 모터에 공급되는 전원을 단속하여 모터의 파손을 방지하는 모터의 절연저항 측정장치에 관한 것이다.The present invention relates to an insulation resistance measuring apparatus of a motor, and more particularly, to an insulation resistance measuring apparatus of a motor which prevents breakage of a motor by intermitting a power supplied to the motor according to an insulation resistance value measured before operation of the motor. will be.
일반적으로, 모터의 사용에 있어 누전 등의 원인에 의해 모터코일의 절연저항값이 낮은 상태에서 모터에 전원이 공급되면 모터의 코일이 소손되거나 과다한 전류가 흐르게 되어 모터의 파손을 유발시키게 된다.In general, when power is supplied to the motor in a state in which the insulation resistance of the motor coil is low due to a short circuit or the like in use of the motor, the coil of the motor is burned out or excessive current flows, causing damage to the motor.
따라서, 모터를 사용하는 동안 정기적으로 모터코일의 절연저항값을 측정하여 그 저항값의 적정여부를 판단하게 되지만, 그 절연저항값의 측정시 관여하는 전류값이 매우 작아서 직접 전류 또는 전압을 가하여 나타나는 전류 또는 전압을 측정하여 절연저항값을 산출하게 된다.Therefore, while using the motor, the insulation resistance value of the motor coil is measured periodically to determine whether the resistance value is appropriate.However, the current value involved in the measurement of the insulation resistance value is very small, which is caused by direct current or voltage. The insulation resistance value is calculated by measuring the current or voltage.
그러나, 이러한 종래 절연저항의 측정방법은 정확한 측정이 어려워 그 신뢰성이 떨어지고, 측정시간이 장시간 소요되어 작업의 생산성을 저하시키며, 순간적인 원인에 의해 모터코일의 절연저항값이 저하될 경우 대처가 불가능하다는 문제가 있다.However, such a conventional method of measuring insulation resistance is difficult to measure accurately, the reliability is low, the measurement time takes a long time to reduce the productivity of work, it is impossible to cope when the insulation resistance value of the motor coil is lowered by the instant cause There is a problem.
본 발명은 이러한 종래의 문제점을 개선하기 위한 것으로, 모터의 가동 전에 절연저항값을 측정하여 그 측정값이 설정된 절연저항값보다 클 때 모터의 가동을 인가하지만 설정된 절연저항값보다 작으면 모터의 전원인가를 차단함으로써 모터의 손상을 방지하는 모터의 절연저항 측정장치를 제공함에 그 목적이 있다.The present invention is to improve such a conventional problem, by measuring the insulation resistance value before the operation of the motor and applying the operation of the motor when the measured value is greater than the set insulation resistance value, but less than the set insulation resistance value of the power supply of the motor It is an object of the present invention to provide an insulation resistance measuring apparatus of a motor that prevents damage to the motor by blocking the application.
도1은 본 발명에 따른 모터의 절연저항 측정장치를 나타내는 회로도이다.1 is a circuit diagram showing an insulation resistance measuring apparatus of a motor according to the present invention.
<도면의 주요부분에 대한 부호의 설명><Description of the symbols for the main parts of the drawings>
1: 모터코일 10: 교류발진회로 11: 구형파발진아이시 20: 전압분배회로 30: 정류회로 40: 증폭회로 41: 증폭기 50: A/D변환부 60: 제어부 R13,R14,R21,R22,R42,R43: 저항 D31: 다이오드 C12,C15,C32: 콘덴서DESCRIPTION OF SYMBOLS 1: Motor coil 10: AC oscillation circuit 11: Square wave oscillation ice 20: Voltage distribution circuit 30: Rectification circuit 40: Amplification circuit 41: Amplifier 50: A / D conversion part 60: Control part R13, R14, R21, R22, R42 R43: Resistance D31: Diode C12, C15, C32: Capacitor
상기한 목적을 달성하기 위하여 본 발명은 모터의 절연저항 측정장치에 있어서, 저항 R14,R13을 통해 콘텐서 C12에 충전된 후, 구형파발진IC에 입력되어 구형파를 발진하는 교류발진회로와; 상기 교류발진회로의 교류발진전압을 브리더저항 R21,R22를 통해 분배하되, 모터코일의 절연저항과 상기 브리더저항 R22의 양단에 걸리는 전압이 비례하도록 구성되는 전압분배회로와; 다이오드 D31과 콘덴서 C32를 이용하여 상기 전압분배회로의 교류구형파신호를 직류신호로 변환하는 정류회로와; 상기 정류회로에서 출력되는 직류전압값을 저항 R42를 통해 증폭기에 입력하면서궤환저항 R43을 통해 궤환하여 증폭하는 증폭회로와; 상기 증폭회로로부터 출력되는 아날로그신호를 디지탈신호로 변환하는 A/D변환부와; 상기 A/D변환부의 디지탈신호를 디스플레이하면서 설정전압값과 비교 연산하여 모터의 전원공급에 대한 인가여부를 제어하는 제어부;를 포함하는 것을 특징으로 하는 모터의 절연저항 측정장치를 제공한다.In order to achieve the above object, the present invention provides an insulation resistance measuring apparatus for a motor, comprising: an AC oscillation circuit charged with a capacitor C12 through resistors R14 and R13 and input to a square wave oscillation IC to oscillate a square wave; A voltage distribution circuit configured to distribute the AC oscillation voltage of the AC oscillation circuit through the breather resistors R21 and R22 so that the insulation resistance of the motor coil and the voltage applied to both ends of the breather resistor R22 are proportional to each other; A rectifier circuit for converting the AC square wave signal of the voltage distribution circuit into a DC signal using a diode D31 and a capacitor C32; An amplifying circuit for inputting a DC voltage value output from the rectifying circuit into an amplifier through a resistor R42 and feeding and feeding back through the feedback resistor R43; An A / D converter for converting an analog signal output from the amplification circuit into a digital signal; It provides a insulation resistance measuring apparatus of a motor, characterized in that it includes; a control unit for controlling the application of the power supply of the motor by comparing with the set voltage value while displaying the digital signal of the A / D conversion unit.
도면을 참조하여 본 발명을 상세히 설명하기로 한다.The present invention will be described in detail with reference to the drawings.
도1은 본 발명에 따른 모터의 절연저항 측정장치를 나타내는 회로도이다.1 is a circuit diagram showing an insulation resistance measuring apparatus of a motor according to the present invention.
본 발명에 따른 모터의 절연저항 측정장치는 교류발진회로(10), 전압분배회로(20) 그리고, 정류회로(30), 증폭회로(40), A/D변환기(50), 제어부(60)로 구성되어 있다.The insulation resistance measuring apparatus of the motor according to the present invention includes an AC oscillation circuit 10, a voltage distribution circuit 20, a rectifier circuit 30, an amplifier circuit 40, an A / D converter 50, and a controller 60. Consists of
그리고, 교류발진회로(10)는 저항 R14,R13을 통해 콘텐서 C12에 충전된 후, 구형파발진IC(11)에 입력되어 구형파를 발진하게 되고, 저항 R13과 R14, 콘덴서 C12을 통해서 연속적으로 충전과 방전이 일어나고, 콘덴서 C15의 경우 잡음방지용 저항이다.The AC oscillation circuit 10 is charged to the capacitor C12 through the resistors R14 and R13, and then is input to the square wave oscillation IC 11 to oscillate the square wave, and is continuously charged through the resistors R13 and R14 and the capacitor C12. Over discharge occurs, and in the case of capacitor C15, it is a noise prevention resistor.
이때, 전압분배회로(20)에서는 직렬 연결된 브리더저항 R21,R22을 이용하여 교류발진회로(10)에서 출력되는 교류발진전압을 분배하게 되는데, 모터코일(1)의 절연저항이 크면 브리더저항 R22의 양단에 걸리는 전압이 높아지게 되고, 반대로 모터코일(1)의 절연저항이 작으면 브리더저항 R22의 양단에 걸리는 전압이 낮아지게 된다.At this time, the voltage distribution circuit 20 distributes the AC oscillation voltage output from the AC oscillation circuit 10 by using the series connected breather resistors R21 and R22. When the insulation resistance of the motor coil 1 is large, The voltage across both ends becomes high, and on the contrary, when the insulation resistance of the motor coil 1 is small, the voltage across both ends of the breather resistor R22 decreases.
또한, 정류회로(30)에서는 다이오드 D31과, 다이오드 D31의 출력측에 병렬연결된 콘덴서 C32를 이용하여 전압분배회로(20)로부터 출력되는 교류구형파신호를 직류신호로 변환하는 회로를 구성하게 된다.In the rectifier circuit 30, a circuit for converting an AC square wave signal output from the voltage distribution circuit 20 into a DC signal is obtained by using a diode D31 and a capacitor C32 connected in parallel to the output side of the diode D31.
여기서, 증폭회로(40)에서는 다이오드 D31과 증폭기(41)의 입력(-)단자를 저항 R42로 연결하게 되며, 증폭기의 (-)단자입력측와 출력측에 궤환저항 R43을 연결하게 된다.Here, in the amplifier circuit 40, the diode D31 and the input (-) terminal of the amplifier 41 are connected to the resistor R42, and the feedback resistor R43 is connected to the (-) terminal input side and the output side of the amplifier.
그리고, 증폭회로(40)에서는 정류회로(30)에서 출력되는 직류전압값을 저항R42를 통해 증폭기(31)에 입력되고, 다시 궤환저항 R43을 통해 궤환되어 증폭이 이루어지는데, 이때 R43/R42에 의해 결정되는 전압증폭값을 0∼5Ｖ로 조정함으로써 아날로그에서 디지탈로의 변환이 용이하도록 한다.In the amplifier circuit 40, the DC voltage value output from the rectifier circuit 30 is input to the amplifier 31 through the resistor R42, and then fed back through the feedback resistor R43 to amplify. The voltage amplification value determined by 0 to 5 kHz is adjusted to facilitate the conversion from analog to digital.
한편, 증폭회로(40)로부터 출력되는 아날로그신호는 A/D변환부(50)를 통해 디지탈신호로 변환되고, A/D변환부(50)로부터 출력되는 디지탈신호는 제어부(60)에 입력된다.On the other hand, the analog signal output from the amplifier circuit 40 is converted into a digital signal through the A / D converter 50, the digital signal output from the A / D converter 50 is input to the controller 60. .
이때, 제어부(60)에서는 입력된 전압의 디지탈값을 디스플레이하는 동시에 설정전압값과 비교 연산하게 되고, 입력전압값이 설정전압값보다 클경우 모터의 전원공급을 인가하게 되지만, 입력전압값이 설정전압값보다 작을 경우 모터의 전원공급을 차단하도록 제어하게 된다.At this time, the controller 60 displays the digital value of the input voltage and compares it with the set voltage value. When the input voltage value is greater than the set voltage value, the controller 60 applies the power supply of the motor, but the input voltage value is set. If it is smaller than the voltage value, it controls to cut off the power supply of the motor.
본 발명은 모터의 가동 전에 모터코일의 절연저항값을 측정하여 그 측정값이 설정된 절연저항값보다 클 때 모터의 가동을 인가하지만 설정된 절연저항값보다 작으면 모터의 전원공급을 자동 차단함으로써 모터의 손상을 방지하는 동시에 작업의생산성 및 신뢰성, 모터의 성능을 향상시키게 되는 효과를 제공하게 된다.The present invention measures the insulation resistance of the motor coil before starting the motor and applies the operation of the motor when the measured value is greater than the set insulation resistance, but automatically cuts off the power supply of the motor if the insulation resistance is less than the set insulation resistance. It prevents damage and at the same time improves the productivity and reliability of the work and the performance of the motor.
Claims (1)
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| KR10-2001-0057868A KR100403964B1 (en) | 2001-09-19 | 2001-09-19 | Apparatus for measuring insulation resistance of motor |
| PCT/KR2002/001778 WO2003025594A1 (en) | 2001-09-19 | 2002-09-19 | Apparatus for measuring insulation resistance of motor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| KR10-2001-0057868A KR100403964B1 (en) | 2001-09-19 | 2001-09-19 | Apparatus for measuring insulation resistance of motor |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| KR20010099281A true KR20010099281A (en) | 2001-11-09 |
| KR100403964B1 KR100403964B1 (en) | 2003-10-30 |
Family
ID=19714416
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| KR10-2001-0057868A KR100403964B1 (en) | 2001-09-19 | 2001-09-19 | Apparatus for measuring insulation resistance of motor |
Country Status (2)
| Country | Link |
|---|---|
| KR (1) | KR100403964B1 (en) |
| WO (1) | WO2003025594A1 (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR100497515B1 (en) * | 2002-03-14 | 2005-07-01 | 디이시스 주식회사 | Apparatus for monitoring insulation of a motor |
| KR100814458B1 (en) * | 2006-08-08 | 2008-03-17 | (주)케이제이다이나텍 | Auto insulation measuring apparatus of a motor and method |
| KR101631658B1 (en) | 2015-04-29 | 2016-06-17 | 삼화디에스피주식회사 | Integrated relay for protecting motor |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR101224036B1 (en) * | 2012-07-27 | 2013-01-21 | 대한기전 주식회사 | 3 phase motor control panel with monitoring |
Family Cites Families (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6111672A (en) * | 1984-06-27 | 1986-01-20 | Idemitsu Petrochem Co Ltd | Detecting method of insulation state of mechanical equipment control circuit |
| JPS61265581A (en) * | 1985-05-20 | 1986-11-25 | Idemitsu Petrochem Co Ltd | Method for detecting insulating state of movable machinery circuit |
| US5155441A (en) * | 1986-12-17 | 1992-10-13 | Zelm Richard J | Automatic insulation tester for grounded and ungrounded electrical equipment |
| JPH02231922A (en) * | 1989-03-02 | 1990-09-13 | Fanuc Ltd | Inrush current prevention system for motor driver upon recovery from instantaneous power interruption |
| JPH04291182A (en) * | 1991-03-20 | 1992-10-15 | Sumitomo Jukikai Plast Mach Kk | Measuring device of insulation resistance of motor |
| JP3224977B2 (en) * | 1994-12-12 | 2001-11-05 | 本田技研工業株式会社 | Method and apparatus for detecting insulation of ungrounded power supply |
| KR19990017059U (en) * | 1997-10-31 | 1999-05-25 | 이구택 | Electric Motor Diagnosis System |
| KR20000001048A (en) * | 1998-06-08 | 2000-01-15 | 최규남 | Apparatus for protecting motor drive |
-
2001
- 2001-09-19 KR KR10-2001-0057868A patent/KR100403964B1/en not_active IP Right Cessation
-
2002
- 2002-09-19 WO PCT/KR2002/001778 patent/WO2003025594A1/en not_active Application Discontinuation
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR100497515B1 (en) * | 2002-03-14 | 2005-07-01 | 디이시스 주식회사 | Apparatus for monitoring insulation of a motor |
| KR100814458B1 (en) * | 2006-08-08 | 2008-03-17 | (주)케이제이다이나텍 | Auto insulation measuring apparatus of a motor and method |
| KR101631658B1 (en) | 2015-04-29 | 2016-06-17 | 삼화디에스피주식회사 | Integrated relay for protecting motor |
Also Published As
| Publication number | Publication date |
|---|---|
| KR100403964B1 (en) | 2003-10-30 |
| WO2003025594A1 (en) | 2003-03-27 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US9473032B2 (en) | Power converter system with synchronous rectifier output stage and reduced no-load power consumption | |
| JP3947139B2 (en) | Power consumption measurement device, power consumption calculation method, power consumption calculation device, switching mode power supply | |
| WO2000003563A3 (en) | Rf power supply | |
| KR100403964B1 (en) | Apparatus for measuring insulation resistance of motor | |
| JPS63178718A (en) | High voltage generator and method for protecting the generator from electric arc | |
| US6839254B2 (en) | Power supply with low loss making current limitation | |
| KR100727373B1 (en) | apparatus of power source for resistance welding | |
| KR20160125241A (en) | LED driving apparatus for eliminating flicker | |
| US8451634B2 (en) | Circuit and method of output power detection for a converter circuit | |
| JP2002252979A (en) | Switching power source | |
| JPH1075572A (en) | Power source circuit | |
| CN100407537C (en) | Switch type power supply protective circuit in electronic equipment | |
| JP4415559B2 (en) | Switching power supply | |
| JPS6387173A (en) | Power unit | |
| KR930011813B1 (en) | Control circuit of inverter microwave oven | |
| JP2004072878A (en) | Switching power supply device | |
| JP2831785B2 (en) | Control device of resistance welding machine | |
| JP3281052B2 (en) | Power circuit | |
| JPH0628045A (en) | Power supply circuit | |
| JP2003348854A (en) | Digital power supply inverter | |
| JPH1075599A (en) | Voltage regulator of vehicle permanent magnet generator | |
| JPH1066334A (en) | System for controlling stabilization of output voltage | |
| JPH0574583A (en) | Lighting apparatus of hid lamp | |
| SU828183A1 (en) | Stabilized dc voltage supply source | |
| JP2004229483A (en) | Switching power supply circuit |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| A201 | Request for examination | ||
| E701 | Decision to grant or registration of patent right | ||
| GRNT | Written decision to grant | ||
| FPAY | Annual fee payment |
Payment date: 20121020 Year of fee payment: 10 |
|
| FPAY | Annual fee payment |
Payment date: 20140418 Year of fee payment: 11 |
|
| FPAY | Annual fee payment |
Payment date: 20141020 Year of fee payment: 12 |
|
| FPAY | Annual fee payment |
Payment date: 20160721 Year of fee payment: 13 |
|
| R401 | Registration of restoration | ||
| FPAY | Annual fee payment |
Payment date: 20161020 Year of fee payment: 14 |
|
| FPAY | Annual fee payment |
Payment date: 20171019 Year of fee payment: 15 |
|
| LAPS | Lapse due to unpaid annual fee |