CN203909199U - A test tool - Google Patents
A test tool Download PDFInfo
- Publication number
- CN203909199U CN203909199U CN201420259739.XU CN201420259739U CN203909199U CN 203909199 U CN203909199 U CN 203909199U CN 201420259739 U CN201420259739 U CN 201420259739U CN 203909199 U CN203909199 U CN 203909199U
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- CN
- China
- Prior art keywords
- time relay
- coil
- branch road
- contactor
- isolating switch
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- 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.)
- Withdrawn - After Issue
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Abstract
The utility model provides a test tool used for circuit break tests or short circuit tests carried out on a capacitor in a circuit. The test tool comprises a first alternating current contactor, a second alternating current contactor, a first time relay, a second time relay and a switching device. A coil of the first time relay is in series connection with the switching device to form a first branch. A coil of the second time relay is in series connection with the switching device to form a second branch. The first branch is in parallel connection with the second branch. The switching device is used for respectively controlling on-off of the first time relay and the second time relay. A contact end of the first time relay and the coil of the first alternating current contactor are in series connection to form a third branch. A contact end of the second time relay is in series connection with the coil of the second alternating current contactor to form a fourth branch. The third branch is in parallel connection with the fourth branch. The contact end of the first alternating current contactor is used for being in parallel connection with a tested capacitor. The contact end of the second alternating current contactor is used for being in parallel connection with the tested capacitor. The test tool of the utility model is high in automation degree and high in test efficiency.
Description
Technical field
The utility model relates to refrigeration electric field, relate in particular to a kind of for testing capacitor opening circuit or the test fixture of short-circuit test at circuit.
Background technology
Generally, in air conditioner electrical safety test, compressor capacitor, exogenous wind be dynamo-electric to be held, to open short circuit be to use isolating switch simulation test to inner blower electric capacity, isolating switch and capacitances in series, isolating switch and Capacitance parallel connection, when the dynamo-electric appearance of analog compression, the dynamo-electric appearance of exogenous wind, inner blower electric capacity are opened short circuit, manual operation isolating switch, but in the time of compressor capacitor short circuit, immediate current is very large, can produce spark phenomenon, isolating switch does not have arc-control device, has potential safety hazard.
Utility model content
In view of the present situation of prior art, the purpose of this utility model is to provide a kind of test fixture, and its automaticity is high, has improved testing efficiency.For achieving the above object, the technical solution of the utility model is as follows:
A kind of test fixture, for testing capacitor opening circuit or short-circuit test at circuit, described test fixture comprises control circuit, described control circuit comprises the first A.C. contactor, the second A.C. contactor, very first time relay, second time relay and switchgear, described in the coil tandem of described very first time relay, switchgear forms the first branch road, described in the coil tandem of described second time relay, switchgear forms the second branch road, described the first branch road and described the second branch circuit parallel connection setting;
The tip side of described very first time relay is connected with the coil of the first A.C. contactor and is formed the 3rd branch road, the tip side of described second time relay is connected with the coil of described the second A.C. contactor and is formed the 4th branch road, described the 3rd branch road and described the 4th branch circuit parallel connection setting, described switchgear is for controlling respectively the break-make of described very first time relay and described second time relay;
The tip side of described the first A.C. contactor is for connecting with measured capacitance, and the tip side of described the second A.C. contactor is in parallel with described measured capacitance.
Therein in an embodiment, described switchgear comprises the first isolating switch and the second isolating switch, the coil of described very first time relay described the first isolating switch of connecting forms described the first branch road, and the coil of described second time relay described the second isolating switch of connecting forms described the second branch road.
In an embodiment, described the first isolating switch and described the second isolating switch are Self-resetting isolating switch therein.
In an embodiment, described control circuit is more than two therein, and described the first branch road more than two, described the second branch road are all arranged in parallel, and described the 3rd branch road more than two, described the 4th branch road are all arranged in parallel.
Therein in an embodiment, described switchgear comprises ATMEGA16L single-chip microcomputer, any two pins in the 33-40 pin of described ATMEGA16L single-chip microcomputer, one of them pin connects the coil of described very first time relay, another pin connects the coil of described second time relay, the described pin that connects the coil of the described very first time relay resistance eutral grounding of connecting, the described pin that connects the coil of described second time relay resistance eutral grounding of also connecting.
Therein in an embodiment, described test fixture also comprises power drive chip, connect between the described pin of coil of described very first time relay and the coil of described very first time relay described power drive chip is set, connect between the described pin of coil of described second time relay and the coil of described second time relay described power drive chip is set.
In an embodiment, described power drive chip is ULN2001, ULN2002, ULN2003 or ULN2004 therein.
In an embodiment, described test fixture also comprises the industrial computer being connected with described ATMEGA16L microcontroller communication therein.
In an embodiment, described very first time relay is the closed type time relay therein, and described second time relay is the open type time relay.
The beneficial effects of the utility model are:
Test fixture of the present utility model, adopt A.C. contactor to substitute previous isolating switch, the time relay is open circuit and the short circuit in circuit in conjunction with A.C. contactor control measured capacitance, with the large electric current of Small current control, avoid the potential safety hazard of manual operation, its automaticity is high, and testing efficiency is high.Also can need to open the time of moving before short circuit by industrial computer setting, the time relay runs to after setting-up time, can automatically control A.C. contactor and move, and realizes out the action of short circuit by the action of A.C. contactor.Avoid the uncertainty of artificial manual activity isolating switch, and can overlap type more and test simultaneously, further improve testing efficiency.
Brief description of the drawings
Fig. 1 is the control principle schematic diagram of test fixture embodiment mono-of the present utility model;
Fig. 2 is the circuit theory schematic diagram of proving installation embodiment bis-of the present utility model.
Embodiment
In order to make the purpose of this utility model, technical scheme and advantage clearer, below in conjunction with drawings and Examples, test fixture of the present utility model is further elaborated.Should be appreciated that specific embodiment described herein is only for explaining the utility model, and be not used in restriction the utility model.
Referring to figs. 1 through Fig. 2, test fixture one embodiment of the present utility model, for testing capacitor opening circuit or short-circuit test at circuit, test fixture comprises control circuit, control circuit comprises the first A.C. contactor KM1, the second A.C. contactor KM2, very first time relay T1, the second time relay T2 and switchgear, the coil tandem switchgear of very first time relay T1 forms the first branch road, the coil tandem switchgear of the second time relay T2 forms the second branch road, the first branch road and the second branch circuit parallel connection setting, switchgear is for controlling respectively the break-make of very first time relay T1 and the second time relay T2, the tip side of very first time relay T1 is connected with the coil of the first A.C. contactor KM1 and is formed the 3rd branch road, the tip side of the second time relay T2 is connected with the coil of the second A.C. contactor KM2 and is formed the 4th branch road, the 3rd branch road and the 4th branch circuit parallel connection setting, the tip side of the first A.C. contactor KM1 is for connecting with measured capacitance, and the tip side of described the second A.C. contactor KM2 is in parallel with described measured capacitance.Contact output terminal and the described measured capacitance of the contact input end of the first A.C. contactor KM1 and the first A.C. contactor KM1 are connected in circuit, the contact input end of the second A.C. contactor KM2 connects a utmost point of described measured capacitance, and the contact output terminal of the second A.C. contactor KM2 connects another utmost point of described measured capacitance.
Embodiment mono-
As shown in Figure 1, switchgear comprises the first isolating switch SB1 and the second isolating switch SB2, the coil of the very first time relay T1 first isolating switch SB1 that connects forms the first branch road, the coil of the second time relay T2 second isolating switch SB2 that connects forms the second branch road, and the first branch road and the second branch circuit parallel connection are connected to external power.The first isolating switch SB1 is for controlling the break-make of very first time relay T1, and the second isolating switch SB2 is for controlling the break-make of second time relay.Preferably, the first isolating switch SB1 and the second isolating switch SB2 are Self-resetting isolating switch.
As a kind of embodiment, control circuit is more than two, and the first branch road more than two, the second branch road are all arranged in parallel, and the first all branch roads is all arranged in parallel, and the second all branch roads are all arranged in parallel.The 3rd branch road more than two, the 4th branch road are all arranged in parallel, that is the 3rd all branch roads is all arranged in parallel, and the 4th all branch roads are all arranged in parallel.
Taking two groups of control circuits as example, test fixture principle of work to embodiment mono-is described, in first group of control circuit, the first A.C. contactor KM1 and the second A.C. contactor KM2 are for for example, testing the first measured capacitance (compressor capacitor), the tip side of the first A.C. contactor KM1 and the first measured capacitance are connected in circuit, and the tip side of the second A.C. contactor KM2 and the first measured capacitance are connected in parallel in circuit; In second group of control circuit, the 3rd A.C. contactor KM3 and the 4th A.C. contactor KM4 are for for example, testing the second measured capacitance (blower fan electric capacity), the tip side of the 3rd A.C. contactor KM3 and the second measured capacitance are connected in circuit, and the tip side of the 4th A.C. contactor KM4 and the second measured capacitance are connected in parallel in circuit.Very first time relay T1 and the 3rd time relay T3 are the closed type time relay, the second time relay T2 and the 4th time relay T4 are the open type time relay, after earth leakage circuit-breaker energising, the first A.C. contactor KM1 and the 3rd A.C. contactor KM3 closure, the second A.C. contactor KM2 and the 4th A.C. contactor KM4 disconnect, when the first isolating switch SB1 disconnects, the very first time, relay T1 started timing, for example, after reaching setting-up time (XX hour/minute/second), very first time relay T1 controls the first A.C. contactor KM1 disconnection (open circuit), second isolating switch SB2 disconnect time, the second time relay T2 starts timing, reach setting-up time after the second time relay T2 control the second A.C. contactor KM2 closure (short circuit), when the 3rd isolating switch SB3 disconnects, the 3rd time relay T3 starts timing, reaches after setting-up time the 3rd time relay T3 and controls the 3rd A.C. contactor KM3 and disconnect (open circuit), when the 4th isolating switch SB4 disconnects, the 4th time relay T4 starts timing, reaches the 4th time relay T4 after setting-up time and controls the 4th A.C. contactor KM4 closure (short circuit), wherein, the setting-up time of very first time relay T1, the second time relay T2, the 3rd time relay T3 and the 4th time relay T4 can be identical, also can need to set the different time according to test.
The first isolating switch SB1, the second isolating switch SB2, the 3rd isolating switch SB3, the 4th isolating switch SB4 play the function that its corresponding time relay is resetted simultaneously, when the first isolating switch SB1 is closed, state before very first time relay T1 resets to, thus make the first A.C. contactor KM1 also reset to previous state; When the second isolating switch SB2 is closed, the state before the second time relay T2 resets to, thus make the second A.C. contactor KM2 also reset to previous power-up state; When the 3rd isolating switch SB3 is closed, the state before the 3rd time relay T3 resets to, thus make the 3rd A.C. contactor KM3 also reset to previous state; When the 4th isolating switch SB4 is closed, the state before the 4th time relay T4 resets to, thus make the 4th A.C. contactor KM4 also reset to previous state.Realize the object of simulating air conditioner capacitance open circuit, short circuit.While realizing open circuit, fault control operation, first set after the time of very first time relay T1, press the first isolating switch SB1, after the setting-up time of very first time relay T1 reaches, very first time relay T1 controls the first A.C. contactor KM1 and disconnects (open circuit), thereby the first measured capacitance opens circuit in circuit (open circuit), i.e. press open circuit; The first isolating switch SB1 makes the first A.C. contactor KM1 reset to previous closure state when closed, thereby the first measured capacitance is normally worked in circuit, then set the time of the second time relay T2, press the second isolating switch SB2, after the setting-up time of the second time relay T2 reaches, the second time relay T2 controls the second A.C. contactor KM2 closure, thereby the first measured capacitance short circuit in circuit (being press short circuit), the second isolating switch SB2 closure makes the second A.C. contactor KM2 reset to previous off-state.Second group of control circuit control second measured capacitance open circuit (blower fan open circuit) is identical with first group with the principle of short circuit (blower fan short circuit), is not described in detail herein.
Embodiment bis-
As shown in Figure 2, switchgear comprises ATMEGA16L single-chip microcomputer, any two pins in the 33-40 pin of ATMEGA16L single-chip microcomputer, one of them pin connects the coil of very first time relay T1, another pin connects the coil of the second time relay T2, the pin of coil that connects the very first time relay T1 resistance eutral grounding of connecting, the pin that connects the coil of the second time relay T2 resistance eutral grounding of also connecting.In Fig. 2, the 39th pin of ATMEGA16L single-chip microcomputer connects the coil of very first time relay T1, the 38th pin of ATMEGA16L single-chip microcomputer connects the coil of the second time relay T2, preferably, between the pin of coil of connection very first time relay T1 and the coil of very first time relay T1, power drive chip is set, connect between the pin of coil of the second time relay T2 and the coil of the second time relay T2 power drive chip is set, in Fig. 2, between the 39th pin and the coil of very first time relay T1, power drive chip is set, between the 38th pin and the coil of the second time relay T2, power drive chip is set, power drive chip is ULN2001, ULN2002, ULN2003 or ULN2004, in figure, power drive chip is ULN2003A.Power drive chip is set, further improves the stability that drives signal.Very first time relay T1 is the closed type time relay, and the second time relay T2 is the open type time relay.
As a kind of embodiment, control circuit is more than two, and the first branch road more than two, the second branch road are all arranged in parallel, and the 3rd branch road more than two, the 4th branch road are all arranged in parallel.In Fig. 2, control circuit is two groups, in second group of control circuit, the 37th pin of ATMEGA16L single-chip microcomputer connects the coil of the 3rd time relay T3, the 36th pin connects the coil of the 4th time relay T4, wherein load 1 to load 4 is equal to four A.C. contactors of embodiment mono-, i.e. load 1 is the first A.C. contactor KM1, and load 2 is the second A.C. contactor KM2, load 3 is the 3rd A.C. contactor KM3, and load 4 is the 4th A.C. contactor KM4.The first A.C. contactor KM1, the second A.C. contactor KM2 are identical with embodiment mono-with the connected mode of the first measured capacitance; The 3rd A.C. contactor KM3, the 4th A.C. contactor KM4 are also identical with embodiment mono-with the connected mode of the second measured capacitance.
As a kind of embodiment, ATMEGA16L single-chip microcomputer is also connected with industrial computer communication, both can connect by R232 or R485 communication, thereby can, by the duty of industrial computer control very first time relay T1, the second time relay T2, the 3rd time relay T3 and the 4th time relay T4, further improve the automaticity of test fixture.
The test fixture test philosophy of embodiment bis-is identical with embodiment mono-, repeats no longer one by one herein.
The test fixture of above embodiment, adopt A.C. contactor to substitute previous isolating switch, the time relay is in conjunction with open circuit and the short circuit of A.C. contactor control compressor capacitor, the dynamo-electric appearance of exogenous wind, inner blower electric capacity, realized that air conditioner analog compression dynamo-electric is held, exogenous wind dynamo-electricly holds, inner blower electric capacity is opened short-circuit test test, with the large electric current of Small current control, avoided the potential safety hazard of manual operation, its automaticity is high, improves testing efficiency.Also can need to open the time of moving before short circuit by industrial computer setting, the time relay runs to after setting-up time, can automatically control A.C. contactor and move, and realizes out the action of short circuit by the action of A.C. contactor.Avoid the uncertainty of artificial manual activity isolating switch, and can overlap type more and test simultaneously, further improve testing efficiency.
The above embodiment has only expressed several embodiment of the present utility model, and it describes comparatively concrete and detailed, but can not therefore be interpreted as the restriction to the utility model the scope of the claims.It should be pointed out that for the person of ordinary skill of the art, without departing from the concept of the premise utility, can also make some distortion and improvement, these all belong to protection domain of the present utility model.Therefore, the protection domain of the utility model patent should be as the criterion with claims.
Claims (10)
1. a test fixture,, is characterized in that in the opening circuit or short-circuit test of circuit for testing capacitor:
Comprise control circuit, described control circuit comprises the first A.C. contactor, the second A.C. contactor, very first time relay, second time relay and switchgear, described in the coil tandem of described very first time relay, switchgear forms the first branch road, described in the coil tandem of described second time relay, switchgear forms the second branch road, described the first branch road and described the second branch circuit parallel connection setting, described switchgear is for controlling respectively the break-make of described very first time relay and described second time relay;
The tip side of described very first time relay is connected with the coil of described the first A.C. contactor and is formed the 3rd branch road, the tip side of described second time relay is connected with the coil of described the second A.C. contactor and is formed the 4th branch road, described the 3rd branch road and described the 4th branch circuit parallel connection setting;
The tip side of described the first A.C. contactor is for connecting with measured capacitance, and the tip side of described the second A.C. contactor is in parallel with described measured capacitance.
2. test fixture according to claim 1, is characterized in that:
Described switchgear comprises the first isolating switch and the second isolating switch, and the coil of described very first time relay described the first isolating switch of connecting forms described the first branch road, and the coil of described second time relay described the second isolating switch of connecting forms described the second branch road.
3. test fixture according to claim 2, is characterized in that:
Described the first isolating switch and described the second isolating switch are Self-resetting isolating switch.
4. test fixture according to claim 2, is characterized in that:
Described control circuit is more than two, and described the first branch road more than two, described the second branch road are all arranged in parallel, and described the 3rd branch road more than two, described the 4th branch road are all arranged in parallel.
5. test fixture according to claim 1, is characterized in that:
Described switchgear comprises ATMEGA16L single-chip microcomputer, any two pins in the 33-40 pin of described ATMEGA16L single-chip microcomputer, one of them pin connects the coil of described very first time relay, another pin connects the coil of described second time relay, the described pin that connects the coil of the described very first time relay resistance eutral grounding of connecting, the described pin that connects the coil of described second time relay resistance eutral grounding of also connecting.
6. test fixture according to claim 5, is characterized in that:
Also comprise power drive chip, connect between the described pin of coil of described very first time relay and the coil of described very first time relay described power drive chip is set, connect between the described pin of coil of described second time relay and the coil of described second time relay described power drive chip is set.
7. test fixture according to claim 6, is characterized in that:
Described power drive chip is ULN2001, ULN2002, ULN2003 or ULN2004.
8. test fixture according to claim 7, is characterized in that:
Described control circuit is more than two, and described the first branch road more than two, described the second branch road are all arranged in parallel, and described the 3rd branch road more than two, described the 4th branch road are all arranged in parallel.
9. test fixture according to claim 5, is characterized in that:
Also comprise the industrial computer being connected with described ATMEGA16L microcontroller communication.
10. according to the test fixture described in claim 1-9 any one, it is characterized in that:
Described very first time relay is the closed type time relay, and described second time relay is the open type time relay.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420259739.XU CN203909199U (en) | 2014-05-20 | 2014-05-20 | A test tool |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420259739.XU CN203909199U (en) | 2014-05-20 | 2014-05-20 | A test tool |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203909199U true CN203909199U (en) | 2014-10-29 |
Family
ID=51783461
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420259739.XU Withdrawn - After Issue CN203909199U (en) | 2014-05-20 | 2014-05-20 | A test tool |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203909199U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104007356A (en) * | 2014-05-20 | 2014-08-27 | 珠海格力电器股份有限公司 | Testing tool |
| CN107907809A (en) * | 2017-11-07 | 2018-04-13 | 格力电器（合肥）有限公司 | Heater test circuit |
-
2014
- 2014-05-20 CN CN201420259739.XU patent/CN203909199U/en not_active Withdrawn - After Issue
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104007356A (en) * | 2014-05-20 | 2014-08-27 | 珠海格力电器股份有限公司 | Testing tool |
| CN107907809A (en) * | 2017-11-07 | 2018-04-13 | 格力电器（合肥）有限公司 | Heater test circuit |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| ASS | Succession or assignment of patent right |
Owner name: GELI ELECTRIC APPLIANCE CO., LTD., ZHUHAI Effective date: 20150120 Owner name: GREE (ZHONGSHAN) SMALL HOME APPLIANCES CO., LTD. Free format text: FORMER OWNER: GELI ELECTRIC APPLIANCE CO., LTD., ZHUHAI Effective date: 20150120 |
|
| C41 | Transfer of patent application or patent right or utility model | ||
| COR | Change of bibliographic data |
Free format text: CORRECT: ADDRESS; FROM: 519070 ZHUHAI, GUANGDONG PROVINCE TO: 528441 ZHONGSHAN, GUANGDONG PROVINCE |
|
| TR01 | Transfer of patent right |
Effective date of registration: 20150120 Address after: 528441 Zhongshan, the people of the town of public Industrial Avenue North, No. 39, north of the city of Guangdong Co-patentee after: GREE ELECTRIC APPLIANCES Inc. OF ZHUHAI Patentee after: Gree Electric Appliances (Zhongshan) Small Household Appliances Manufacturing Co., Ltd. Address before: 519070 Guangdong city of Zhuhai Province Qianshan No. six Patentee before: GREE ELECTRIC APPLIANCES Inc. OF ZHUHAI |
|
| AV01 | Patent right actively abandoned |
Granted publication date: 20141029 Effective date of abandoning: 20160824 |
|
| AV01 | Patent right actively abandoned |
Granted publication date: 20141029 Effective date of abandoning: 20160824 |
|
| C25 | Abandonment of patent right or utility model to avoid double patenting |