CN204214896U - A kind of terminal box electric resistance measuring apparatus - Google Patents
A kind of terminal box electric resistance measuring apparatus Download PDFInfo
- Publication number
- CN204214896U CN204214896U CN201420632602.4U CN201420632602U CN204214896U CN 204214896 U CN204214896 U CN 204214896U CN 201420632602 U CN201420632602 U CN 201420632602U CN 204214896 U CN204214896 U CN 204214896U
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- CN
- China
- Prior art keywords
- resistance measuring
- terminal
- connector
- terminal box
- pole inserted
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- Expired - Fee Related
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Abstract
The utility model relates to a kind of terminal box electric resistance measuring apparatus, comprise base, link cassette holder on base, junction box seat upper surface offers the groove coordinating terminal box shape, the top of junction box seat is vertically provided with the cylinder connecting air pump, the end of the cylinder rod of cylinder is fixedly connected with a fixed block, the two ends of fixed block arrange contact jaw respectively, the side of base arranges side plate, side plate stretches out respectively and is fixed with connector positive pole inserted terminal and connector negative pole inserted terminal, the rear end of connector positive pole inserted terminal and connector negative pole inserted terminal is shorted together by wire, contact jaw accesses resistance measuring circuit respectively, described air pump connects a switch.The utility model provides a kind of terminal box automatic resistance measurement mechanism, easy to operate, improves detection efficiency.
Description
Technical field
The utility model relates to a kind of pick-up unit of photovoltaic junction box.
Background technology
The diode being provided with metal support in photovoltaic junction box and being connected between metal support, in fact contact resistance is there is between the cable then connecting two ends metal supports, the size of this contact resistance is also the important indicator affecting terminal box performance, therefore needs to detect the resistance value between the metal support of two ends.In prior art, for low resistance, general employing four-end method is measured, the basic characteristics of four-end method be constant-current supply by two current feed poles by low resistance to be measured for electric current supply, digital voltage then by two voltage leads to measure by constant-current supply supply electric current and the potential difference (PD) formed on low resistance to be measured.Because two current feed poles are outside two voltage lead poles, current feed pole contact resistance and lead resistance therefore can be got rid of on the impact of measuring.Input impedance again due to digital voltmeter is very high, and voltage lead pole contact resistance and lead resistance can be ignored on the impact of measuring.During concrete measurement, the current feed of being drawn by power supply and power supply lead wire are connected electricity folder respectively, and electricity folder is sandwiched the two ends of metal support by operator respectively, and be connected with connector due to the two ends of terminal box, also need the positive and negative end of connector to carry out short circuit, see whether the data recorded meet the requirements, then take out electricity folder, take both positive and negative polarity connector apart, operate next terminal box, operate like this, not only get folder electricity folder trouble, tear connector open also pretty troublesome, inefficiency.
Summary of the invention
In order to overcome the deficiency that in prior art, measuring resistance efficiency is not high, the utility model provides a kind of terminal box electric resistance measuring apparatus of handled easily.
The technical scheme in the invention for solving the technical problem is:
A kind of terminal box electric resistance measuring apparatus, comprise base, link cassette holder on base, junction box seat upper surface offers the groove coordinating terminal box shape, the top of junction box seat is vertically provided with the cylinder connecting air pump, the end of the cylinder rod of cylinder is fixedly connected with a fixed block, the two ends of fixed block arrange contact jaw respectively, the side of base arranges side plate, side plate stretches out respectively and is fixed with connector positive pole inserted terminal and connector negative pole inserted terminal, the rear end of connector positive pole inserted terminal and connector negative pole inserted terminal is shorted together by wire, contact jaw accesses resistance measuring circuit respectively, described air pump connects a switch.
As preferably, the contact jaw at fixed block two ends is respectively arranged with two, described resistance measuring circuit comprises power supply, and described power supply leads to two current feeds and two voltage leads respectively, and described current feed, voltage lead are electrically connected corresponding contact jaw respectively.
As preferably, contact jaw comprises and wears wearing bar and being arranged on the contact contact wearing bar lower end of fixed block.
As preferably, switch is foot-switch.
During operation, terminal box is placed in the groove of junction box seat, the connector of the two ends connection of terminal box is inserted in connector positive pole inserted terminal and the connector negative pole inserted terminal of side plate respectively, be shorted together by the wire of its rear end, trample foot-switch, air pump starts, the cylinder rod of cylinder moves downward, contact contact contacts the metal support connected in terminal box respectively, because contact contact is respectively by current feed and voltage lead electric connection of power supply, then metal support two ends access resistance measuring circuit, records the contact resistance in terminal box with this.During operation, the connector of terminal box is directly plugged on connector positive pole inserted terminal and connector negative pole inserted terminal, and pin tramples switch, just passable, manual operation is not needed to contact contact, but uses both hands and feet, connector is torn open to be communicated with inserted terminal also more convenient, improve detection efficiency.
The beneficial effects of the utility model are: the utility model provides a kind of terminal box automatic resistance measurement mechanism, easy to operate, improves detection efficiency.
Accompanying drawing explanation
Fig. 1 is structural representation of the present utility model.
Embodiment
Below in conjunction with the drawings and specific embodiments, the utility model is described in further detail.
As shown in Figure 1, a kind of terminal box electric resistance measuring apparatus, comprise base 10, link cassette holder 12 on base 10, junction box seat 12 upper surface offers the groove 11 coordinating terminal box shape, the top of junction box seat is vertically provided with the cylinder 4 connecting air pump 3, and the end of the cylinder rod 5 of cylinder 4 is fixedly connected with a fixed block 7, the two ends of fixed block 7 arrange contact jaw respectively, and contact jaw comprises and wears wearing bar and being arranged on the contact contact 8 wearing bar lower end of fixed block.The side of base arranges side plate 1, side plate stretches out respectively and is fixed with connector positive pole inserted terminal 13 and connector negative pole inserted terminal 14, the rear end of connector positive pole inserted terminal 13 and connector negative pole inserted terminal 14 is shorted together by wire 2, contact jaw accesses resistance measuring circuit respectively, and described air pump connects a foot-switch 9.
The contact jaw at fixed block two ends is respectively arranged with two, and described resistance measuring circuit comprises power supply, and described power supply leads to two current feeds and two voltage leads respectively, and described current feed, voltage lead are electrically connected corresponding contact jaw respectively.
During operation, terminal box is placed in the groove 11 of junction box seat, the connector of the two ends connection of terminal box is inserted in connector positive pole inserted terminal 13 and the connector negative pole inserted terminal 14 of side plate respectively, be shorted together by the wire 1 of its rear end, trample foot-switch 9, air pump 3 starts, the cylinder rod 5 of cylinder 4 moves downward, contact contact 8 contacts the metal support connected in terminal box respectively, because contact contact is respectively by current feed and voltage lead electric connection of power supply, then metal support two ends access resistance measuring circuit, the contact resistance in terminal box is recorded with this.During operation, the connector of terminal box is directly plugged on connector positive pole inserted terminal and connector negative pole inserted terminal, and pin tramples switch, just passable, manual operation is not needed to contact contact, but uses both hands and feet, connector is torn open to be communicated with inserted terminal also more convenient, improve detection efficiency.
The utility model provides a kind of terminal box automatic resistance measurement mechanism, easy to operate, improves detection efficiency.
Claims (4)
1. a terminal box electric resistance measuring apparatus, it is characterized in that: comprise base, link cassette holder on base, junction box seat upper surface offers the groove coordinating terminal box shape, the top of junction box seat is vertically provided with the cylinder connecting air pump, the end of the cylinder rod of cylinder is fixedly connected with a fixed block, the two ends of fixed block arrange contact jaw respectively, the side of base arranges side plate, side plate stretches out respectively and is fixed with connector positive pole inserted terminal and connector negative pole inserted terminal, the rear end of connector positive pole inserted terminal and connector negative pole inserted terminal is shorted together by wire, contact jaw accesses resistance measuring circuit respectively, described air pump connects a switch.
2. a kind of terminal box electric resistance measuring apparatus according to claim 1, it is characterized in that: the contact jaw at fixed block two ends is respectively arranged with two, described resistance measuring circuit comprises power supply, described power supply leads to two current feeds and two voltage leads respectively, and described current feed, voltage lead are electrically connected corresponding contact jaw respectively.
3. a kind of terminal box electric resistance measuring apparatus according to claim 2, is characterized in that: described contact jaw comprises and wears wearing bar and being arranged on the contact contact wearing bar lower end of fixed block.
4. a kind of terminal box electric resistance measuring apparatus according to claim 3, is characterized in that: described switch is foot-switch.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420632602.4U CN204214896U (en) | 2014-10-29 | 2014-10-29 | A kind of terminal box electric resistance measuring apparatus |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420632602.4U CN204214896U (en) | 2014-10-29 | 2014-10-29 | A kind of terminal box electric resistance measuring apparatus |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204214896U true CN204214896U (en) | 2015-03-18 |
Family
ID=52983560
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420632602.4U Expired - Fee Related CN204214896U (en) | 2014-10-29 | 2014-10-29 | A kind of terminal box electric resistance measuring apparatus |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204214896U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107024633A (en) * | 2017-06-19 | 2017-08-08 | 福建科达衡器有限公司 | A kind of connection box leveling efficient detection frock clamp |
-
2014
- 2014-10-29 CN CN201420632602.4U patent/CN204214896U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107024633A (en) * | 2017-06-19 | 2017-08-08 | 福建科达衡器有限公司 | A kind of connection box leveling efficient detection frock clamp |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20150318 Termination date: 20181029 |