CN204515112U - A kind of earth loop impedance test instrument spot check frock - Google Patents

A kind of earth loop impedance test instrument spot check frock Download PDF

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Publication number
CN204515112U
CN204515112U CN201420847564.4U CN201420847564U CN204515112U CN 204515112 U CN204515112 U CN 204515112U CN 201420847564 U CN201420847564 U CN 201420847564U CN 204515112 U CN204515112 U CN 204515112U
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CN
China
Prior art keywords
resistance
protective housing
spot check
tester
driving switch
Prior art date
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Active
Application number
CN201420847564.4U
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Chinese (zh)
Inventor
曹敬乐
胡海生
卢凯
王仕鹏
黄海燕
陆川
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
HAINING ZHENGTAI NEW ENERGY TECHNOLOGY CO., LTD.
Shanghai Zhengtai New Energy Technology Co., Ltd.
Original Assignee
SHANGHAI ASTRONERGY SOLAR ENERGY TECHNOLOGY Co Ltd
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Priority to CN201420847564.4U priority Critical patent/CN204515112U/en
Application granted granted Critical
Publication of CN204515112U publication Critical patent/CN204515112U/en
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Abstract

Earth loop impedance test instrument spot check frock disclosed in the utility model, comprise protective housing, protection cap, circuit board and be arranged on driving switch, the pilot lamp that containment vessel covers, protection cap is arranged in protective housing; Circuit board is arranged in protective housing, and this circuit board is arranged on first, second, third resistance on pcb board and forms by pcb board, employing parallel way, driving switch and the 3rd resistant series; One end of pilot lamp connects the first connecting line; the other end connects one end of first, second, third resistor coupled in parallel; one end of first, second resistance, driving switch parallel connection connects the second connecting line, and it is outer and be connected with the probe of tester that the other end of first, second connecting line extends protective housing.Use this earth loop impedance test instrument spot check frock, effectively can avoid causing the abnormal assembly quality hidden danger caused of test result because tester fault can not check out in time, thus effectively judge the duty of tester, ensure the accurate of test result.

Description

A kind of earth loop impedance test instrument spot check frock
Technical field
The utility model relates to a kind of earth loop impedance test instrument spot check frock.
Background technology
Photovoltaic module is widely used when photovoltaic plant, and for preventing abnormal conditions from occurring, its frame must carry out grounding, therefore assembly is when dispatching from the factory, and special tester must be used to do dependence test to its impedance ground performance.In order to ensure the accuracy that tester is tested, regularly spot check need be carried out by specific frock to tester.
According to the standard of IEC, the high current load of earth loop impedance test instrument constant output 37.5A is on module frame, it is qualified that test result is less than 100m Ω, its output power is approximately about P=I*I*R=140.625W, this just requires that the resistance of spot check frock has the performance of Low ESR nominal power, therefore when designing this frock, the special resistance of Low ESR nominal power should be used to adopt the connected mode of parallel shunt to use to realize frock long-time stable.But current tester causes the abnormal assembly quality hidden danger caused of test result because fault can not check out in time, belong to a kind of " open, short " rough type detecting method.
Utility model content
Technical problem to be solved in the utility model is the many weak points existing for current earth loop impedance test instrument spot check frock, and provide one accurately can know spot check result, thus effectively judge the duty of tester, ensure the instrument of the earth loop impedance test accurately spot check frock of test result.
Technical problem to be solved in the utility model can be achieved through the following technical solutions:
Earth loop impedance test instrument spot check frock, comprise protective housing, protection cap, circuit board and be arranged on driving switch, the pilot lamp that described containment vessel covers, described protective housing and protection cap are that the material seal of high insulation high rigidity is made, and protection cap adopts securing member to be arranged in described protective housing, described circuit board is arranged in described protective housing, this circuit board is by pcb board, parallel way is adopted to be arranged on the first resistance on described pcb board, second resistance, 3rd resistance is formed, described driving switch and the 3rd resistant series, one end of described pilot lamp connects one end of the first connecting line, the other end of pilot lamp connects described first resistance, second resistance, one end of 3rd resistor coupled in parallel, described first resistance, second resistance, the other end of driving switch parallel connection connects one end of the second connecting line, it is outer and be connected with the probe of tester that described first connecting line and the other end of the second connecting line extend described protective housing.
In a preferred embodiment of the present utility model, described first resistance, the second resistance employing impedance are 200m Ω-300m Ω, rated power is the aluminum casing resistor of 80W-120W, and the 3rd resistance employing impedance is 50m Ω-100m Ω, rated power is the aluminum casing resistor of 50W-60W.
Owing to have employed technical scheme as above, when the utility model carries out spot check test, by the probe of frock connecting line difference connecting test instrument.Driving switch is pushed Pass spot check state, open tester and test, tester prompting Pass, then Pass spot check success; Driving switch is pushed Fail spot check state, open tester and test, tester prompting Fail also reports to the police, then Fail spot check success.If pass spot check or Fail spot check have any one failure, then represent that tester fault needs maintenance.
Use earth loop impedance test instrument spot check frock of the present utility model, can effectively avoid causing the abnormal assembly quality hidden danger caused of test result because tester fault can not check out in time, compared with in the rough type detecting method of " open, short " in the past, this detecting method can accurately know spot check result, thus effectively judge the duty of tester, ensure the accurate of test result.
Accompanying drawing explanation
Fig. 1 is structural representation of the present utility model.
Fig. 2 is electric principle schematic of the present utility model.
Embodiment
See Fig. 1 and Fig. 2; the earth loop impedance test instrument spot check frock provided in figure; comprise protective housing 10, protection cap 20, circuit board 30 and driving switch K, the pilot lamp L be arranged on protection cap 20 to form; protective housing 10 and protection cap 20 are that the material seal of high insulation high rigidity is made, and protection cap 20 adopts securing member to be arranged in protective housing 10.
Circuit board 30 is arranged in protective housing 10, this circuit board 30 is by pcb board 31, parallel way is adopted to be arranged on the first resistance R1 on pcb board 31, second resistance R2, 3rd resistance R3 is formed, driving switch K connects with the 3rd resistance R3, one end of pilot lamp L connects one end of the first connecting line 40, the other end of pilot lamp L connects the first resistance R1, second resistance R2, one end of 3rd resistance R3 parallel connection, first resistance R1, second resistance R2, the other end of driving switch K parallel connection connects one end of the second connecting line 50, it is outer and be connected with the probe of tester that first connecting line 40 and the other end of the second connecting line 50 extend protective housing 10.
First resistance R1, the second resistance R2 adopt that impedance is 200m Ω, rated power is the aluminum casing resistor of 80W, and the 3rd resistance R3 adopts that impedance is 100m Ω, rated power is the aluminum casing resistor of 60W.When driving switch K is in disconnection, parallel resistance is 100m Ω, adds wire rod resistance (being about 20m Ω), and entirety is 120m Ω, exceedes tester upper limit resistance 100m Ω, prompting upper limit alarm.When driving switch K is in closed, parallel resistance is 50m Ω, adds wire rod resistance, and entirety is 70m Ω, and do not exceed line resistance on tester, it is qualified to point out.
When carrying out spot check test, by the probe of the first connecting line 50, second connecting line 60 difference connecting test instrument of earth loop impedance test instrument spot check frock of the present utility model.Driving switch K is pushed Pass spot check state (in Fig. 2, driving switch K is in closed), open tester and test, tester prompting Pass, then Pass spot check success; Driving switch is pushed Fail spot check state (in Fig. 2, driving switch K is in disconnection), open tester and test, tester prompting Fail also reports to the police, then Fail spot check success.If pass spot check or Fail spot check have any one failure, then represent that tester fault needs maintenance.

Claims (2)

1. earth loop impedance test instrument spot check frock, it is characterized in that, comprise protective housing, protection cap, circuit board and be arranged on driving switch, the pilot lamp that described containment vessel covers, described protective housing and protection cap are that the material seal of high insulation high rigidity is made, and protection cap adopts securing member to be arranged in described protective housing, described circuit board is arranged in described protective housing, this circuit board is by pcb board, parallel way is adopted to be arranged on the first resistance on described pcb board, second resistance, 3rd resistance is formed, described driving switch and the 3rd resistant series, one end of described pilot lamp connects one end of the first connecting line, the other end of pilot lamp connects described first resistance, second resistance, one end of 3rd resistor coupled in parallel, described first resistance, second resistance, the other end of driving switch parallel connection connects one end of the second connecting line, it is outer and be connected with the probe of tester that described first connecting line and the other end of the second connecting line extend described protective housing.
2. earth loop impedance test instrument spot check frock as claimed in claim 1, it is characterized in that, described first resistance, the second resistance employing impedance are 200m Ω-300m Ω, rated power is the aluminum casing resistor of 80W-120W, and the 3rd resistance employing impedance is 50m Ω-100m Ω, rated power is the aluminum casing resistor of 50W-60W.
CN201420847564.4U 2014-12-22 2014-12-22 A kind of earth loop impedance test instrument spot check frock Active CN204515112U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201420847564.4U CN204515112U (en) 2014-12-22 2014-12-22 A kind of earth loop impedance test instrument spot check frock

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201420847564.4U CN204515112U (en) 2014-12-22 2014-12-22 A kind of earth loop impedance test instrument spot check frock

Publications (1)

Publication Number Publication Date
CN204515112U true CN204515112U (en) 2015-07-29

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CN201420847564.4U Active CN204515112U (en) 2014-12-22 2014-12-22 A kind of earth loop impedance test instrument spot check frock

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN106019193A (en) * 2016-06-29 2016-10-12 上海正泰太阳能科技有限公司 Integrated point inspection device for insulation voltage-withstand and grounding impedance tester

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN106019193A (en) * 2016-06-29 2016-10-12 上海正泰太阳能科技有限公司 Integrated point inspection device for insulation voltage-withstand and grounding impedance tester
CN106019193B (en) * 2016-06-29 2019-11-26 海宁正泰新能源科技有限公司 A kind of insulation is pressure-resistant and the integrated point inspection device of earth loop impedance test instrument

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Date Code Title Description
GR01 Patent grant
C14 Grant of patent or utility model
TR01 Transfer of patent right

Effective date of registration: 20170510

Address after: Jiaxing City, Zhejiang Province, Haining city Jianshan District 314417 Ji Sheng Lu No. 1

Co-patentee after: Shanghai Astronergy Solar Energy Technology Co., Ltd.

Patentee after: HAINING ASTRONERGY NEW ENERGY TECHNOLOGY CO., LTD.

Address before: 201300 Shanghai City, Pudong New Area Hui Zhen Nan Lu Road No. 163 -1

Patentee before: Shanghai Astronergy Solar Energy Technology Co., Ltd.

TR01 Transfer of patent right
CP01 Change in the name or title of a patent holder

Address after: 314417 No. 1 Jisheng Road, Jiaxing City, Zhejiang Province

Co-patentee after: Shanghai Zhengtai New Energy Technology Co., Ltd.

Patentee after: HAINING ZHENGTAI NEW ENERGY TECHNOLOGY CO., LTD.

Address before: 314417 No. 1 Jisheng Road, Jiaxing City, Zhejiang Province

Co-patentee before: Shanghai Astronergy Solar Energy Technology Co., Ltd.

Patentee before: HAINING ZHENGTAI NEW ENERGY TECHNOLOGY CO., LTD.

CP01 Change in the name or title of a patent holder