CN104407255A - Simple device and method for testing conduction disturbance voltage of handheld electric tool and method - Google Patents
Simple device and method for testing conduction disturbance voltage of handheld electric tool and method Download PDFInfo
- Publication number
- CN104407255A CN104407255A CN201410733472.8A CN201410733472A CN104407255A CN 104407255 A CN104407255 A CN 104407255A CN 201410733472 A CN201410733472 A CN 201410733472A CN 104407255 A CN104407255 A CN 104407255A
- Authority
- CN
- China
- Prior art keywords
- electric tool
- voltage
- frequency spectrograph
- shell
- socket
- 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.)
- Granted
Links
Landscapes
- Measurement Of Resistance Or Impedance (AREA)
- Testing Relating To Insulation (AREA)
Abstract
The invention discloses a simple device and a method for testing the conduction disturbance voltage of a handheld electric tool. The device comprises a box body, a frequency spectrometer, a voltage probe, a switch, a socket, a stimulant hand, an alligator clip, a test line and matched load, wherein the frequency spectrometer is connected with the voltage probe, the other end of the voltage probe is connected with the switch, and the three switching ends of the switch can be respectively connected with the matched load, as well as a zero line jack and a live line jack of the socket; the stimulant hand consists of a capacitor and a resistor which are connected in series with each other; both the socket and the frequency spectrometer are connected with commercial power, and the other end of the resistor in the stimulant hand and the grounding end of the frequency spectrometer are grounded; one end of the test line is connected with the capacitor, and the other end of the test line is connected with the alligator clip. The simple device and the method have the advantages of low cost, no needed shielding room, high speed and higher accuracy. The method has better consistence with the method regulated in the national standard, is applicable to enterprises' online rapid detection, diagnostic test and law-enforcing departments' on-site detection and law enforcement.
Description
Technical field
The present invention relates to electric tool field tests, particularly relate to a kind of hand held electric tool conduction interference voltage Simplified Test Equipment and method.
Background technology
The Electro Magnetic Compatibility of electric tool product is that standard GB/T 4343.1 detects, and 150kHz-30MHz disturbance voltage project is wherein often defective.The test of this project needs to use receiver, artificial mains network, artificial hand, the expensive device such as screened room, somewhat expensive, and test period is long.
Summary of the invention
The object of the invention is to for the deficiencies in the prior art, a kind of hand held electric tool conduction interference voltage Simplified Test Equipment and method are provided.
The object of the invention is to be achieved through the following technical solutions: a kind of hand held electric tool conduction interference voltage Simplified Test Equipment, comprising: casing, frequency spectrograph, voltage probe, change-over switch, socket, artificial hand, crocodile clip, p-wire and matched load; Described voltage probe, artificial hand and matched load are placed in casing, frequency spectrograph, change-over switch and socket are embedded on casing, frequency spectrograph is connected with voltage probe, the other end of voltage probe connects change-over switch, and three switch terminal of change-over switch can distinguish matching connection load, the neutral receptacle of socket and line receptacle; Described artificial hand is made up of the capacitor of 220pF ± 20% and the resistor in series of 510 Ω ± 10%; Two power port, a ground connection mouth and artificial hand's interface is provided with in tank surface; Socket is connected with civil power by a power port, and frequency spectrograph is connected with civil power by another power port, and in artificial hand, the other end of resistor and the earth terminal of frequency spectrograph are by ground connection mouth ground connection; P-wire is through artificial hand's interface, and one end connects capacitor, and the other end connects crocodile clip; Described matched load is 50 Ohmages; This device is connected with electric power tool shell by crocodile clip, the peak detector (PK) of frequency spectrograph, average reading detector (AV) and CISPR AV wave detector is used to scan 150kHz to the 30MHz frequency range disturbance voltage at electric tool power lead the two poles of the earth, compare with standard limited value, thus judge the disturbance voltage performance of electric tool.
Further, described frequency spectrograph is the frequency spectrograph with preselector and 6dB intermediate-frequency filter.
Utilize said apparatus to test a method for hand held electric tool conduction interference voltage, comprise the following steps:
(1) for earth-free hand held electric tool, if the shell of electric tool is made up of metal, then crocodile clip is clipped on shell;
If the shell of electric tool is insulator, then on the shell of handle and motor position, cover width is the metal forming of 60mm respectively, and two parts metal forming connects together, and is clipped to by crocodile clip in metal forming;
If the shell of electric tool comprises metallic member and insulator part, then on the shell of handle and motor position, cover width is the metal forming of 60mm respectively, two parts metal forming connects together, and metal shell is connected with metal forming, is clipped to by crocodile clip in metal forming;
For the hand held electric tool of ground connection, the shell of electric tool is connected with the earth;
(2) change-over switch is pulled to matched load end, first the power supply of frequency spectrograph is connected, frequency spectrograph is started shooting, then the power supply of gang socket, be connected by the plug and socket of tested electric tool, the power switch of the tested electric tool that closes, after tested electric tool starts running and stablizes, pull the pole of change-over switch to power lead, the scan function starting frequency spectrograph is measured;
(3) by peak detector (PK) and the average reading detector (AV) of frequency spectrograph, the disturbance voltage input signal gathered by voltage probe is carried out to the scanning of 150kHz to 30MHz frequency range, run-down, the QP quasi-peak value limit value specified in disturbance voltage peak PK value and GB4343.1 standard is compared, mean value AV value compares with AV limit value, if all lower than limit value, qualified; If there is the situation higher than limit value, then selects 6 the maximum frequency points exceeding limit value, enter into step (4);
(4) by the quasi-peak detector (QP) and the CISPR AV wave detector of frequency spectrograph, the disturbance voltage input signal gathered by voltage probe is carried out to the measurement (Measuring Time 1 second) of quasi-peak value (QP) and CISPR AV value to these 6 maximum frequency points, the quasi-peak value QP limit value specified in disturbance voltage level value and GB4343.1 standard, CISPR AV limit value are compared, if lower than limit value, qualified; If higher than limit value, then this product is defective;
(5) pull change-over switch, voltage probe is connected to another pole of power lead, repeats the test process of step (3), (4);
(6) if tested electric tool can reverse, under the duty of reversion, so also to carry out the measurement of step (3), (4), (5), finally complete the test of hand held electric tool conduction interference voltage.
The invention has the beneficial effects as follows: the instrument and equipment required for apparatus of the present invention is only frequency spectrograph and voltage probe, and frequency spectrograph is the portable frequency spectrum instrument with preselector and 6dB intermediate-frequency filter, has cost low, does not need screened room, speed is fast, the advantage that accuracy is higher; The method consistance of the inventive method and national Specification is better, is applicable to the on-line quick detection of enterprise, test of knowing the real situation, the Site Detection law enforcement of law enforcement agency; Switch sections increases by 50 ohm, road matched load, first gets to mating end before measurement, reduces electric tool booting moment to the impact of frequency spectrograph.
Accompanying drawing explanation
Fig. 1 is apparatus of the present invention one-piece construction figure;
In figure, casing 1, frequency spectrograph 2, voltage probe 3, change-over switch 4, socket 5, artificial hand 6, crocodile clip 7, p-wire 8, matched load 9.
Embodiment
Below in conjunction with accompanying drawing, the present invention is described in further detail.
As shown in Figure 1, a kind of hand held electric tool conduction interference of the present invention voltage Simplified Test Equipment, comprising: casing 1, frequency spectrograph 2, voltage probe 3, change-over switch 4, socket 5, artificial hand 6, crocodile clip 7, p-wire 8 and matched load 9; Described voltage probe 3, artificial hand 6 and matched load 9 are placed in casing 1, frequency spectrograph 2, change-over switch 4 and socket 5 are embedded on casing 1, frequency spectrograph 2 is connected with voltage probe 3, the other end of voltage probe 3 connects change-over switch 4, and three switch terminal of change-over switch 4 can distinguish matching connection load 9, the neutral receptacle of socket 5 and line receptacle; Described artificial hand 6 is made up of the capacitor of 220pF ± 20% and the resistor in series of 510 Ω ± 10%; Two power port, a ground connection mouth and artificial hand's interface is provided with on casing 1 surface; Socket 5 is connected with civil power by a power port, and frequency spectrograph 2 is connected with civil power by another power port, and in artificial hand 6, the other end of resistor and the earth terminal of frequency spectrograph 2 are by ground connection mouth ground connection; P-wire 8 is through artificial hand's interface, and one end connects capacitor, and the other end connects crocodile clip 7; Described frequency spectrograph 2 has preselector and 6dB intermediate-frequency filter, and measuring accuracy is higher; Described matched load 9 is 50 Ohmages, and before measuring, first change-over switch 4 gets to mating end, reduces electric tool booting moment to the impact of frequency spectrograph 2; This device is connected with electric power tool shell by crocodile clip 7, the peak detector (PK) of frequency spectrograph 2, average reading detector (AV) and CISPR AV wave detector is used to scan 150kHz to the 30MHz frequency range disturbance voltage at electric tool power lead the two poles of the earth, compare with standard limited value, thus judge the disturbance voltage performance of electric tool, there is cost low, do not need screened room, speed is fast, the advantage that accuracy is higher.
Utilize said apparatus to test a method for hand held electric tool conduction interference voltage, comprise the following steps:
(1) for earth-free hand held electric tool, if the shell of electric tool is made up of metal, then crocodile clip 7 is clipped on shell;
If the shell of electric tool is insulator, then on the shell of handle and motor position, cover width is the metal forming of 60mm respectively, and two parts metal forming connects together, and clips in metal forming by crocodile clip 7;
If the shell of electric tool comprises metallic member and insulator part, then on the shell of handle and motor position, cover width is the metal forming of 60mm respectively, two parts metal forming connects together, and metal shell is connected with metal forming, clips in metal forming by crocodile clip 7;
For the hand held electric tool of ground connection, the shell of electric tool is connected with the earth;
(2) change-over switch 4 is pulled to matched load 9 end, first the power supply of frequency spectrograph 2 is connected, frequency spectrograph 2 is started shooting, then the power supply of gang socket 5, be connected by the plug and socket 5 of tested electric tool, the power switch of the tested electric tool that closes, after tested electric tool starts running and stablizes, pull the pole of change-over switch 4 to power lead, the scan function starting frequency spectrograph 2 is measured;
(3) by peak detector (PK) and the average reading detector (AV) of frequency spectrograph 2, the disturbance voltage input signal gathered by voltage probe 3 is carried out to the scanning of 150kHz to 30MHz frequency range, run-down, the QP quasi-peak value limit value specified in disturbance voltage peak PK value and GB4343.1 standard is compared, mean value AV value compares with AV limit value, if all lower than limit value, qualified; If there is the situation higher than limit value, then selects 6 the maximum frequency points exceeding limit value, enter into step (4);
(4) by the quasi-peak detector (QP) and the CISPR AV wave detector of frequency spectrograph 2, the disturbance voltage input signal gathered by voltage probe 3 is carried out to the measurement (Measuring Time 1 second) of quasi-peak value (QP) and CISPR AV value to these 6 maximum frequency points, the quasi-peak value QP limit value specified in disturbance voltage level value and GB4343.1 standard, CISPR AV limit value are compared, if lower than limit value, qualified; If higher than limit value, then this product is defective;
(5) pull change-over switch 4, voltage probe 3 is connected to another pole of power lead, repeats the test process of step (3), (4);
(6) if tested electric tool can reverse, under the duty of reversion, so also to carry out the measurement of step (3), (4), (5), finally complete the test of hand held electric tool conduction interference voltage.
Claims (3)
1. a hand held electric tool conduction interference voltage Simplified Test Equipment, it is characterized in that, comprising: casing (1), frequency spectrograph (2), voltage probe (3), change-over switch (4), socket (5), artificial hand (6), crocodile clip (7), p-wire (8) and matched load (9); Described voltage probe (3), artificial hand (6) and matched load (9) are placed in casing (1), frequency spectrograph (2), change-over switch (4) and socket (5) are embedded on casing (1), frequency spectrograph (2) is connected with voltage probe (3), the other end of voltage probe (3) connects change-over switch (4), and three switch terminal of change-over switch (4) can distinguish matching connection load (9), the neutral receptacle of socket (5) and line receptacle; Described artificial hand (6) is made up of the capacitor of 220pF ± 20% and the resistor in series of 510 Ω ± 10%; Two power port, a ground connection mouth and artificial hand's interface is provided with on casing (1) surface; Socket (5) is connected with civil power by a power port, and frequency spectrograph (2) is connected with civil power by another power port, and in artificial hand (6), the other end of resistor and the earth terminal of frequency spectrograph (2) are by ground connection mouth ground connection; P-wire (8) is through artificial hand's interface, and one end connects capacitor, and the other end connects crocodile clip (7); Described matched load (9) is 50 Ohmages; This device is connected with electric power tool shell by crocodile clip (7), the peak detector (PK) of frequency spectrograph (2), average reading detector (AV) and CISPR AV wave detector is used to scan 150kHz to the 30MHz frequency range disturbance voltage at electric tool power lead the two poles of the earth, compare with standard limited value, thus judge the disturbance voltage performance of electric tool.
2. a kind of hand held electric tool conduction interference voltage Simplified Test Equipment according to claim 1, it is characterized in that, described frequency spectrograph (2) is for having the frequency spectrograph of preselector and 6dB intermediate-frequency filter.
3. utilize a method for device to test hand held electric tool conduction interference voltage described in claim 1, it is characterized in that, comprise the following steps:
(1) for earth-free hand held electric tool, if the shell of electric tool is made up of metal, then crocodile clip (7) is clipped on shell;
If the shell of electric tool is insulator, then on the shell of handle and motor position, cover width is the metal forming of 60mm respectively, and two parts metal forming connects together, and clips in metal forming by crocodile clip (7);
If the shell of electric tool comprises metallic member and insulator part, then on the shell of handle and motor position, cover width is the metal forming of 60mm respectively, two parts metal forming connects together, and metal shell is connected with metal forming, clips in metal forming by crocodile clip (7);
For the hand held electric tool of ground connection, the shell of electric tool is connected with the earth;
(2) pull change-over switch (4) to hold to matched load (9), first the power supply of frequency spectrograph (2) is connected, frequency spectrograph (2) is started shooting, the power supply of then gang socket (5), be connected by the plug and socket (5) of tested electric tool, the power switch of the tested electric tool that closes, after tested electric tool starts running and stablizes, pull the pole of change-over switch (4) to power lead, the scan function starting frequency spectrograph (2) is measured;
(3) by peak detector (PK) and the average reading detector (AV) of frequency spectrograph (2), the disturbance voltage input signal gathered by voltage probe (3) is carried out to the scanning of 150kHz to 30MHz frequency range, run-down, the QP quasi-peak value limit value specified in disturbance voltage peak PK value and GB4343.1 standard is compared, mean value AV value compares with AV limit value, if all lower than limit value, qualified; If there is the situation higher than limit value, then selects 6 the maximum frequency points exceeding limit value, enter into step (4);
(4) by the quasi-peak detector (QP) and the CISPR AV wave detector of frequency spectrograph (2), the disturbance voltage input signal gathered by voltage probe (3) is carried out to the measurement (Measuring Time 1 second) of quasi-peak value (QP) and CISPR AV value to these 6 maximum frequency points, the quasi-peak value QP limit value specified in disturbance voltage level value and GB4343.1 standard, CISPR AV limit value are compared, if lower than limit value, qualified; If higher than limit value, then this product is defective;
(5) pull change-over switch (4), voltage probe (3) is connected to another pole of power lead, repeats the test process of step (3), (4);
(6) if tested electric tool can reverse, under the duty of reversion, so also to carry out the measurement of step (3), (4), (5), finally complete the test of hand held electric tool conduction interference voltage.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410733472.8A CN104407255B (en) | 2014-12-05 | 2014-12-05 | Simple device and method for testing conduction disturbance voltage of handheld electric tool and method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410733472.8A CN104407255B (en) | 2014-12-05 | 2014-12-05 | Simple device and method for testing conduction disturbance voltage of handheld electric tool and method |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN104407255A true CN104407255A (en) | 2015-03-11 |
| CN104407255B CN104407255B (en) | 2017-02-08 |
Family
ID=52644900
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410733472.8A Active CN104407255B (en) | 2014-12-05 | 2014-12-05 | Simple device and method for testing conduction disturbance voltage of handheld electric tool and method |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN104407255B (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105093014A (en) * | 2015-07-23 | 2015-11-25 | 山东省科学院自动化研究所 | Electromagnetic interference test method |
| CN107505526A (en) * | 2017-09-12 | 2017-12-22 | 青岛四方庞巴迪铁路运输设备有限公司 | Method for detecting low-frequency common-mode interference of direct-current voltage |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101093235A (en) * | 2007-07-20 | 2007-12-26 | 南京师范大学 | System for measuring internal impedance of noise source of switching power supply EMI based on Hilbert transform and current probe, and measuration method |
| CN101207447A (en) * | 2006-12-19 | 2008-06-25 | 中兴通讯股份有限公司 | Method for testing mobile terminal radiating continuous disturbance indicators and system thereof |
| CN101799494A (en) * | 2010-01-29 | 2010-08-11 | 南京邮电大学 | Soft separation method of conducted electromagnetic interference noise based on blind signal processing technology |
| CN102510313A (en) * | 2011-10-21 | 2012-06-20 | 中国北方车辆研究所 | Method for measuring communication port |
| CN102721845A (en) * | 2012-05-28 | 2012-10-10 | 煤炭科学研究总院 | Field conduction interference signal recorder |
| CN103488840A (en) * | 2013-09-27 | 2014-01-01 | 中国东方电气集团有限公司 | System and method for modeling printed circuit board level conducted electromagnetic interference |
-
2014
- 2014-12-05 CN CN201410733472.8A patent/CN104407255B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101207447A (en) * | 2006-12-19 | 2008-06-25 | 中兴通讯股份有限公司 | Method for testing mobile terminal radiating continuous disturbance indicators and system thereof |
| CN101093235A (en) * | 2007-07-20 | 2007-12-26 | 南京师范大学 | System for measuring internal impedance of noise source of switching power supply EMI based on Hilbert transform and current probe, and measuration method |
| CN101799494A (en) * | 2010-01-29 | 2010-08-11 | 南京邮电大学 | Soft separation method of conducted electromagnetic interference noise based on blind signal processing technology |
| CN102510313A (en) * | 2011-10-21 | 2012-06-20 | 中国北方车辆研究所 | Method for measuring communication port |
| CN102721845A (en) * | 2012-05-28 | 2012-10-10 | 煤炭科学研究总院 | Field conduction interference signal recorder |
| CN103488840A (en) * | 2013-09-27 | 2014-01-01 | 中国东方电气集团有限公司 | System and method for modeling printed circuit board level conducted electromagnetic interference |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105093014A (en) * | 2015-07-23 | 2015-11-25 | 山东省科学院自动化研究所 | Electromagnetic interference test method |
| CN105093014B (en) * | 2015-07-23 | 2017-10-10 | 山东省科学院自动化研究所 | A kind of Electromagnetic Interference Test method |
| CN107505526A (en) * | 2017-09-12 | 2017-12-22 | 青岛四方庞巴迪铁路运输设备有限公司 | Method for detecting low-frequency common-mode interference of direct-current voltage |
Also Published As
| Publication number | Publication date |
|---|---|
| CN104407255B (en) | 2017-02-08 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN202676858U (en) | Partial discharge test system under impulse voltage | |
| JP2022538874A (en) | Method and system for measuring superimposed voltage waveform of commercial voltage and impulse voltage | |
| Candela et al. | A novel partial discharge detection system based on wireless technology | |
| Madonia et al. | Wireless partial discharge tracking on cross-linked polyethylene MV and HV cables | |
| CN104407255A (en) | Simple device and method for testing conduction disturbance voltage of handheld electric tool and method | |
| CN209086378U (en) | A kind of device for detection cable insulation ag(e)ing state | |
| CN203037802U (en) | Data measuring storage system achieving transformer high-frequency and ultrahigh-frequency partial discharge monitoring | |
| Hallak et al. | Impedance measurement of electrical equipment loads on the power line network | |
| CN106226608A (en) | A kind of cable phase sequence determinator | |
| Liu et al. | A magnetic detecting and evaluation method of substation’s grounding grids with break and corrosion | |
| CN211293129U (en) | Partial discharge detection device with combined action of alternating current and impulse voltage | |
| CN204228868U (en) | Hand held electric tool conduction interference voltage Simplified Test Equipment | |
| CN111707910A (en) | Porcelain insulator internal insulation detection method and porcelain insulator detection circuit | |
| CN203224571U (en) | A flexible grounding resistance tester | |
| CN110596545A (en) | Partial discharge detection device and detection method based on combined action of alternating current and impulse voltage | |
| JP5086119B2 (en) | Deterioration location method and apparatus for power cable | |
| Tang et al. | A combined noise-rejection method for UHF PD detection on-site | |
| CN108896947A (en) | The field calibration method and transient voltage measurement method of converter station DC fields transient voltage non-contact measurement apparatus | |
| CN105445675B (en) | The mass analysis method of AC power | |
| Habrych et al. | Scalable System with Rogowski Coil for E-management of Detection and Measurement of PLC Interference in Electric Power Grids | |
| Lima et al. | Transient ground impedance measurement using a very short current lead | |
| CN110907343B (en) | Method for detecting corrosion rate of grounding grid | |
| CN110286083B (en) | Comprehensive detection method for external corrosion | |
| CN107515364A (en) | A kind of radio interference time domain measurement device and method based on conductor corona electric discharge | |
| CN203759192U (en) | Simulated testing platform for simulated partial electricity discharge of a cross-linked polyethylene insulated cable |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |