CN2033126U - Detecting instrument for electrical equipments - Google Patents
Detecting instrument for electrical equipments Download PDFInfo
- Publication number
- CN2033126U CN2033126U CN 87215426 CN87215426U CN2033126U CN 2033126 U CN2033126 U CN 2033126U CN 87215426 CN87215426 CN 87215426 CN 87215426 U CN87215426 U CN 87215426U CN 2033126 U CN2033126 U CN 2033126U
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- CN
- China
- Prior art keywords
- circuit
- indicating
- output terminal
- gauge outfit
- relay
- Prior art date
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- Testing Electric Properties And Detecting Electric Faults (AREA)
Abstract
The utility model discloses a detecting instrument for the electrical equipment, comprising a conversion switch, a circuit portion adopting the photoelectric coupling principle for detecting the conductivity of the measured component and a circuit portion adopting 500V high voltage to measure the insulative resistance value. The utility model can replace the megger, the universal meter and the electricity detecting pen to conduct detection to the protective ground connection performance, the coil switching and the insulative performance of various electric devices and the short circuit performance of the soft conductor wire of external connection. The utility model has simple and reliable detection and long service life with the audible and visual alarm and meter head indication and the rapid site concentration detection is effectively realized.
Description
The present invention relates to a kind of instrument that is used for the every security performance of detection utensil.
At present; the detection of domestic every security performance (protective ground performance, coil break-make, insulating property and external flexible circuit conductor short-circuit capability) to hand-held or movable electric tool, household electrical appliance and other consuming device; must adopt megohmmeter, multimeter and test pencil to carry out respectively; like this; detect extremely trouble; speed is slow, and accuracy is low, and can not carry out at the scene.Patent documentation by retrieval, Japan " clear 60-145372 " discloses a kind of " electric tool brief test machine ", this machine can replace above-mentioned three class testing tools, carry out the detection of every security performance simultaneously, but this machine is to the protective ground performance and coil break-make performance detection adopts conducting to detect and the circuit of the amplification of taking a sample, and testing circuit and amplifying circuit are connected as a single entity, and is in the energising duty over a long time together, element is fragile, and functional reliability is relatively poor; Detection to insulating property and external flexible circuit conductor short-circuit capability, circuit comprises two standard setting circuit and two comparator circuits, adopt the method for relatively amplifying to determine Standard resistance range, circuit is complicated, and testing reliability is poor, can not intuitively understand insulation resistance value, and resistance is between two typical set value the time, both undesired indication is not reported to the police again, and this just is difficult to judge is that tested utensil still can use or this testing machine is out of order.
The purpose of this invention is to provide a kind of circuit simple, detect new detecting instrument reliable, long service life.
Detecting instrument of the present invention is made up of alteration switch (2), check circuit (3) and test circuit (4).Check circuit (3) is made up of conducting checking circuit (3a), photoswitch circuit (3b), delay circuit (3c) and indicating circuit (3d).Conducting checking circuit (3a) constitutes the loop by alteration switch (2) and measured piece, photoswitch circuit (3b) is connected with indicating circuit (3d) by relay normally open contact, be connected with delay circuit (3c) by the relay normally closed contact, delay circuit (3c) is connected with indicating circuit (3d) by relay normally open contact.If the measured piece conducting, then the light-emitting component of conducting checking circuit (3a) brightens, and makes the optoelectronic switch conducting, and the relay normally closed contact is opened, and cuts off delay circuit (3c), and the normally opened contact closure is connected indicating circuit (3d), normally indicates; If not conducting of measured piece, then described light-emitting component does not work, though or measured piece conducting, but the light-emitting component luminance shortage is so that the optoelectronic switch conducting, at this moment optoelectronic switch ends, and relay is failure to actuate, delay circuit (3c) time-delay conducting, closure by relay normally open contact is connected indicating circuit (3d), carries out improper indication.Test circuit (4) is made up of high direct voltage transducer (4a), rectification circuit (4b) and gauge outfit indicating circuit (4c).High direct voltage transducer (4a) is High Level AC Voltage with the low-voltage DC rising of power supply, by exporting high voltage direct current after rectification circuit (4b) rectification, this direct current one end is applied to detected element two ends by gauge outfit indicating circuit (4c) back respectively with the other end, and the insulation resistance of detected element is shown by the table (8) of gauge outfit indicating circuit (4c) like this.
The photoswitch circuit (3b) of check circuit of the present invention (3) and delay circuit (3c) are isolated with conducting checking circuit (3a), belong to pulsation work, are not simultaneously in running order for a long time; Test circuit (4) adopts high pressure to test insulation resistance value, meets relative national standards.Circuit of the present invention is simple, detection is reliable, cheap for manufacturing cost, long service life, and the gauge outfit indication accurately can intuitively reflect insulation resistance value, has more effectively realized the concentrated fast detecting of consuming device security performance.
Below in conjunction with accompanying drawing the present invention is further specified.
Fig. 1 is a circuit block diagram of the present invention;
Fig. 2 is gauge outfit indicating circuit (4c) schematic diagram of test circuit of the present invention (4);
Fig. 3 is check circuit of the present invention (a 3) schematic diagram;
Fig. 4 is an external form oblique view of the present invention;
Fig. 5 is an external form rear view of the present invention.
The alteration switch of detecting instrument of the present invention (2) comprises protective ground key (2a), coil break-make key (2b), insulating property key (2c) and external flexible circuit conductor short-circuit key (2d) ［ hereinafter to be referred as key (2a), key (2b), key (2c), key (2d) ］.This Instrument shell (7) is provided with socket (5) and socket (6), detects tie point P
1And P
2(detect tie point and can be jack, below just be referred to as jack P
1, jack P
2).Socket (5) is applicable to a class and three class consuming devices, and socket (6) is applicable to two class consuming devices.The used power supply of this instrument can be battery feed, also can be the standard voltage source of AC-DC, below illustrates with the standard voltage source (1) that is arranged in this instrument.
Check circuit (3) is made up of conducting checking circuit (3a), photoswitch circuit (2b), delay circuit (2c) and indicating circuit (2d).Conducting checking circuit (3a) is by resistance R
6, R
7With light emitting diode D
1Form, when detecting the protective ground performance, use R
6And D
1, R
7Disconnect circuit one end and jack P
1Connect, the other end is connected with the fire line terminal of socket (5 or 6) by key (2a), and measured piece is added in the fire line terminal and the jack P of socket (5 or 6)
1Between; During magnetic test coil break-make performance, use R
7And D
1, R
6Disconnect, circuit two ends are communicated with respectively by two fire line terminals of key (2b) with socket (5 or 6), and detected element is added between two fire line terminals of socket (5 or 6).Light emitting diode D
1The BG of brilliance control photoswitch circuit (3b)
1Conducting or end.Photoswitch circuit (3b) passes through relay J
1Normally opened contact J
1-2Be connected with normal indicating section (3d1) in the indicating circuit (3d), by its normally closed contact J
1-1(3c) is connected with delay circuit, and delay circuit (3c) passes through relay J
2Normally opened contact J
2-1Be connected with the improper indicating section (3d2) in the indicating circuit (3d).If the measured piece conducting, D
1Brighten, when brightness acquires a certain degree, BG
1Conducting, relay J
1Action, its contact J
1-1Open, cut off delay circuit (3c), contact J
1-2Closure is connected normal indicating section (3d1), makes its light emitting diode D
2Bright, expression is normal; If not conducting of measured piece, D
1Do not work, though or conducting, D
1Luminance shortage so that BG
1Conducting, at this moment BG
1End relay J
1Be failure to actuate contact J
1-2Often open, normal indicating section (3d1) does not have electricity, contact J
1-1Normally closed, delay circuit (3c) time-delay conducting, relay J
2Action, its normally opened contact J
2-1Closure is connected improper indicating section (3d2), makes its light emitting diode D
3Bright, hummer SP sounding carries out sound and light alarm.
Test circuit (4) is made up of high direct voltage transducer (4a), rectification circuit (4b) and gauge outfit indicating circuit (4c).Dispose stabilivolt D in the gauge outfit indicating circuit (4c), make partial current keep stable, thereby make table (8) indication more accurate.High direct voltage transducer (4a) is connected with standard voltage source (1) with key (2d) by key (2c), it raises into the above High Level AC Voltage of 500V with the low-voltage DC of standard voltage source (1), again through the 500V direct current of rectification circuit (4b) output smoothing, this direct current one end (a) inserts key (2c) and key (2d) through gauge outfit indicating circuit (4c) back, and the other end (b) directly inserts key (2c), key (2d) and jack P
2During the test insulating property, to a class or three appliances, key (2c) makes this direct current one end (a) be connected with socket (5) fire line terminal, the other end (b) is connected with socket (5) ground wire terminal, to two appliances, this direct current one end (a) is connected with socket (6) fire line terminal by key (2c), the direct and jack P of the other end (b)
2Connect; When testing external flexible circuit conductor short-circuit capability, key (2d) is connected these galvanic two ends respectively with two fire line terminals of socket (5 or 6).
When using the present invention to detect, the attaching plug insertion socket (5 or 6) with consuming device thereafter, carries out as follows respectively to different test items: when a, check protection ground connection performance, make jack P with connecting line
1Be connected with tested utensil metal shell, press key (2a), if D
2Bright, expression is normal, if D
3Bright, the SP sounding, it is undesired to represent; When b, inspection coil break-make, connect the electrical device power switch, press key (2b), D
2Bright, expression is normal, D
3Bright, it is undesired that the SP sounding is represented; When C, test insulating property, connect the consuming device switch, to a class or three appliances, press key (2c), the resistance of table (8) indication is not less than 2M Ω, and it is qualified to represent, otherwise defective, to two appliances, makes jack P with connecting line
2Be connected with tested utensil metal shell, press key (2C) again, the resistance of table (8) indication is not less than 7M Ω, and it is qualified to represent, otherwise defective; When d, the external flexible circuit conductor short-circuit capability of test, open the consuming device power switch, press key (2d), table (8) has indicated external flexible circuit conductor electrode insulation resistance, and it is identical to judge that whether qualified and C item are tested insulating property.
Other parts are described as follows among Fig. 5, Fig. 6:
9 is power switch; 10 is power supply indicator;
11 are table (8) zeroing button; 12 are table (8) zeroing knob;
13 is HT pilot; 14 are supply socket;
15 is fuse.
Claims (5)
1, a kind of consuming device detecting instrument, form by alteration switch (2), check circuit (3) and test circuit (4), it is characterized in that described check circuit (3) is made up of conducting checking circuit (3a), photoswitch circuit (3b), delay circuit (3c) and indicating circuit (3d), conducting checking circuit (3a) comprises resistance R
6, R
7With light emitting diode D
1, R
6, R
7Respectively with D
1Series connection is equipped with relay J in the photoswitch circuit (3b)
1, be equipped with relay J in the delay circuit (3c)
2, indicating circuit comprises normal indicating section (3d
1) and improper indicating section (3d
2), conducting checking circuit (3a) forms loop, light emitting diode D with detected element
1The BG of control photoswitch circuit (3b)
1Conducting or end, photoswitch circuit (3b) passes through relay J with delay circuit (3c)
1Normally closed contact J
1-1Be connected, with normal indicating section (3d
1) pass through relay J
1Normally opened contact J
1-2Be connected delay circuit (3c) and improper indicating section (3d
2) pass through relay J
2Normally opened contact J
2-1Be connected.
2, a kind of consuming device detecting instrument, by alteration switch (2), check circuit (3) and test circuit (4) are formed, it is characterized in that described test circuit (4) is by high direct voltage transducer (4a), rectification circuit (4b) and gauge outfit indicating circuit (4c) are formed, high direct voltage transducer (4a) input end is connected with direct supply by alteration switch (2), output terminal connects rectification circuit (4b), rectification circuit (4b) output terminal a connects gauge outfit indicating circuit (4c), connects detected element between another output terminal b and gauge outfit indicating circuit (4c) output terminal.
3, instrument according to claim 1, it is characterized in that described test circuit (4) is made up of high direct voltage transducer (4a), rectification circuit (4b) and gauge outfit indicating circuit (4c), high direct voltage transducer (4a) input end is connected with direct supply by alteration switch (2), output terminal connects rectification circuit (4b), rectification circuit (4b) output terminal a connects gauge outfit indicating circuit (4c), connects detected element between another output terminal b and gauge outfit indicating circuit (4c) output terminal.
4,, it is characterized in that described alteration switch (2) is by protective ground key (2a), coil break-make key (2b) according to claim 1 or 2 or 3 described instruments.Insulating property key (2c) and external flexible circuit conductor short-circuit key (2d) are formed.
5,, it is characterized in that being provided with stabilivolt D in the described gauge outfit indicating circuit (4c) according to claim 2 or 3 described instruments.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 87215426 CN2033126U (en) | 1987-11-05 | 1987-11-05 | Detecting instrument for electrical equipments |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 87215426 CN2033126U (en) | 1987-11-05 | 1987-11-05 | Detecting instrument for electrical equipments |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2033126U true CN2033126U (en) | 1989-02-22 |
Family
ID=4829563
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 87215426 Withdrawn CN2033126U (en) | 1987-11-05 | 1987-11-05 | Detecting instrument for electrical equipments |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2033126U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102914746A (en) * | 2012-08-14 | 2013-02-06 | 昆山兴能能源科技有限公司 | Device and method for measuring insulation resistor of lithium ion battery cell |
| CN104267251A (en) * | 2014-10-22 | 2015-01-07 | 江玉柱 | Electric protection parameter calibrating device and method for military equipment |
-
1987
- 1987-11-05 CN CN 87215426 patent/CN2033126U/en not_active Withdrawn
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102914746A (en) * | 2012-08-14 | 2013-02-06 | 昆山兴能能源科技有限公司 | Device and method for measuring insulation resistor of lithium ion battery cell |
| CN104267251A (en) * | 2014-10-22 | 2015-01-07 | 江玉柱 | Electric protection parameter calibrating device and method for military equipment |
| CN104267251B (en) * | 2014-10-22 | 2016-06-01 | 江玉柱 | Military hardware electric protection parameter calibrating installation and method |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |