CN215768853U - Secondary cable core insulation measurement auxiliary device - Google Patents
Secondary cable core insulation measurement auxiliary device Download PDFInfo
- Publication number
- CN215768853U CN215768853U CN202122290229.1U CN202122290229U CN215768853U CN 215768853 U CN215768853 U CN 215768853U CN 202122290229 U CN202122290229 U CN 202122290229U CN 215768853 U CN215768853 U CN 215768853U
- Authority
- CN
- China
- Prior art keywords
- pole double
- throw switch
- double
- electrically connected
- grounding
- 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.)
- Active
Links
Images
Landscapes
- Measurement Of Resistance Or Impedance (AREA)
Abstract
A secondary cable core insulation measurement auxiliary device comprises a measurement terminal strip, a grounding terminal strip, a first single-pole double-throw switch unit and a second single-pole double-throw switch unit; the first single-pole double-throw switch unit comprises a plurality of single-pole double-throw switch modules, and the second single-pole double-throw switch unit comprises a first single-pole double-throw switch and a second single-pole double-throw switch; the measuring terminal row is electrically connected with the common terminal of the single-pole double-throw switch module through a lead, the discharge potential of the single-pole double-throw switch module is electrically connected with the common terminal of the first single-pole double-throw switch through a lead, and the discharge potential of the first single-pole double-throw switch is electrically connected with the grounding clamp through a lead; the grounding terminal strip is electrically connected with the public end of the second single-pole double-throw switch through a wire, and the test position of the second single-pole double-throw switch is electrically connected with the grounding clamp through a wire. The insulation resistance measuring device solves the defect that the insulation resistance of the handheld secondary cable core is measured, can assist in completing insulation measurement operation quickly, safely and reliably, and effectively guarantees personal safety and equipment safety.
Description
Technical Field
The utility model belongs to the technical field of insulation measurement, and particularly relates to an auxiliary device for insulation measurement of a secondary cable core.
Background
The insulation resistance is the most basic insulation index of the electrical equipment and the electrical circuit, and whether the insulation of the electrical equipment is wholly damped, wholly deteriorated and penetrated defects can be found in time by measuring the insulation resistance. The insulation resistance of low-voltage electrical appliances, connecting cables and secondary circuits thereof is generally not lower than 1M omega; should not be less than 0.5M Ω in a relatively humid environment; the insulation resistance of the small bus of the secondary circuit should not be lower than 10M omega. In the electric secondary maintenance work, the insulation resistance measurement is often carried out on a newly laid cable and an old cable core, but the following problems exist in the measurement process of the insulation resistance of the secondary cable:
1. the voltage for measuring the insulation resistance is higher, generally more than 250V, and is greater than the human body safety voltage, so that potential safety hazards are caused to the personal safety of measuring personnel;
2. after the insulation resistance is measured, the cable core generally has residual voltage, and if the cable core cannot be reliably discharged, the normal operation of related electrical equipment in a loop may be affected;
3. in the insulation resistance measurement process, generally adopt handheld mode to carry out the insulation resistance measurement between sinle silk and the sinle silk, between sinle silk and the ground, the sinle silk is easily rocked and is difficult for looking over the sinle silk serial number, causes the maloperation easily.
Disclosure of Invention
In view of the technical problems in the background art, the auxiliary device for insulation measurement of the secondary cable core provided by the utility model solves the defect of insulation resistance measurement of the secondary cable core by hand, can assist in completing insulation measurement operation quickly, safely and reliably, and effectively guarantees personal safety and equipment safety.
In order to solve the technical problems, the utility model adopts the following technical scheme to realize:
a secondary cable core insulation measurement auxiliary device comprises a measurement terminal strip, a grounding terminal strip, a first single-pole double-throw switch unit and a second single-pole double-throw switch unit;
the first single-pole double-throw switch unit comprises a plurality of single-pole double-throw switch modules, and the second single-pole double-throw switch unit comprises a first single-pole double-throw switch and a second single-pole double-throw switch; the single-pole double-throw switch module, the first single-pole double-throw switch and the second single-pole double-throw switch comprise a test position, a public end and a discharge position;
the measuring terminal row is electrically connected with the common terminal of the single-pole double-throw switch module through a lead, the discharge potential of the single-pole double-throw switch module is electrically connected with the common terminal of the first single-pole double-throw switch through a lead, and the discharge potential of the first single-pole double-throw switch is electrically connected with the grounding clamp through a lead;
the grounding terminal strip is electrically connected with the public end of the second single-pole double-throw switch through a wire, and the test position of the second single-pole double-throw switch is electrically connected with the grounding clamp through a wire.
In a preferred scheme, the measuring terminal strip and the grounding terminal strip are two-way high-voltage-resistance terminal strips, and each two-way high-voltage-resistance terminal of the measuring terminal strip is correspondingly and electrically connected with one single-pole double-throw switch module; the grounding terminal strip comprises two double-path high voltage-resistant terminals which are respectively and electrically connected with the first single-pole double-throw switch and the second single-pole double-throw switch.
In a preferred scheme, the grounding clip is an insulating sheath crocodile clip.
In a preferred scheme, every two double-path high-voltage-resistant terminals in the measuring terminal row form a group of inter-core wire insulation measuring terminals; and each double-path high voltage-resistant terminal is provided with a serial number.
In the preferred scheme, each two-way high voltage-resistant terminal is provided with a grounding test hole, a grounding wire withdrawing hole, a meter pen test hole and a meter pen wire withdrawing hole.
This patent can reach following beneficial effect:
1. the insulation resistance measuring device solves the defect that the insulation resistance of the handheld secondary cable core is measured, can assist in completing insulation measurement operation quickly, safely and reliably, and effectively guarantees personal safety and equipment safety.
2. At most, 8 secondary cable core can be carried out the insulation resistance measurement between sinle silk and the sinle silk, between sinle silk and the ground, the problem that the sinle silk easily rocked and the sinle silk serial number is difficult for looking over among the solution operation process, improves insulation resistance measurement's convenience.
Drawings
The utility model is further illustrated by the following examples in conjunction with the accompanying drawings:
FIG. 1 is a system diagram of the present invention.
In the figure: the device comprises a measurement terminal row 1, a grounding terminal row 2, a first single-pole double-throw switch unit 3, a second single-pole double-throw switch unit 4 and an insulating sheath crocodile clip 5;
SP1 denotes a measuring terminal block; SP2 denotes a ground terminal block; SW represents a single-pole double-throw switch, and the numerical value after the SW represents a number; switch denotes a ship-type single pole double throw Switch.
Detailed Description
A preferred scheme is as shown in fig. 1, the secondary cable core insulation measurement auxiliary device comprises a measurement terminal row 1, a ground terminal row 2, a first single-pole double-throw switch unit 3 and a second single-pole double-throw switch unit 4;
the first single-pole double-throw switch unit 3 comprises a plurality of single-pole double-throw switch modules, and the second single-pole double-throw switch unit 4 comprises a first single-pole double-throw switch and a second single-pole double-throw switch; the single-pole double-throw switch module, the first single-pole double-throw switch and the second single-pole double-throw switch comprise a test position, a public end and a discharge position;
the measuring terminal row 1 is electrically connected with the common terminal of the single-pole double-throw switch module through a lead, the discharge potential of the single-pole double-throw switch module is electrically connected with the common terminal of the first single-pole double-throw switch through a lead, and the discharge potential of the first single-pole double-throw switch is electrically connected with the grounding clamp through a lead;
the grounding terminal row 2 is electrically connected with the public end of the second single-pole double-throw switch through a lead, and the test position of the second single-pole double-throw switch is electrically connected with the grounding clamp through a lead.
The first single-pole double-throw Switch unit 3 and the second single-pole double-throw Switch unit 4 are a boat-shaped single-pole double-throw Switch1 and a boat-shaped single-pole double-throw Switch2, respectively.
The device comprises a measurement terminal row SP1, a grounding terminal row SP2, a single-pole double-throw Switch SW1, a single-pole double-throw Switch SW2, a single-pole double-throw Switch SW3, a single-pole double-throw Switch SW4, a single-pole double-throw Switch SW5, a single-pole double-throw Switch SW6, a single-pole double-throw Switch SW7, a single-pole double-throw Switch SW8, a boat-shaped single-pole double-throw Switch1, a boat-shaped single-pole double-throw Switch2, an insulating sheath alligator clip 5 and a connecting lead. The auxiliary measurement secondary cable core insulation resistance of mainly used reduces the personal safety risk and the equipment potential safety hazard that exist among the operation process, improves the convenience and the security of operation.
Furthermore, the measurement terminal row 1 and the grounding terminal row 2 are two-way high-voltage-resistance terminal rows, and each two-way high-voltage-resistance terminal of the measurement terminal row 1 is correspondingly and electrically connected with one single-pole double-throw switch module; the ground terminal row 2 includes two double-circuit high withstand voltage terminals, and the two double-circuit high withstand voltage terminals are electrically connected with the first single-pole double-throw switch and the second single-pole double-throw switch, respectively. Every two double-path high-voltage-resistance terminals in the measuring terminal row 1 form a group of inter-core wire insulation measuring terminals; and each double-path high voltage-resistant terminal is provided with a serial number. Each double-circuit high voltage-resistant terminal is provided with a grounding test hole, a grounding wire withdrawing hole, a meter pen test hole and a meter pen wire withdrawing hole.
The measuring terminal row SP1 constitute by 8 high withstand voltage terminal rows of double-circuit, 4 wiring holes are defined as cable wiring hole, cable and move back the line hole, pen-shape metre test hole and pen-shape metre respectively and move back the line hole, wherein be equipped with the elasticity plectrum in the cable moves back the line hole, fluctuate through a word sword for the installation heart yearn usefulness, the pen-shape metre moves back the operation method in line hole and cable move back the line hole the same. The stylus may be mounted to the stylus measurement aperture.
The grounding terminal row SP2 is composed of 2 double-path high voltage-resistant terminal rows, and 4 wiring holes are respectively defined as a grounding test hole, a grounding wire withdrawing hole, a meter pen test hole and a meter pen wire withdrawing hole.
The single-pole double-throw switches SW1-SW8 are respectively composed of a test position, a common end and a discharge position, when the switches are switched to the test position, the core of the tested cable of the measurement terminal row SP1 is suspended, namely, in an off state, and when the switches are switched to the discharge position, the core of the tested cable of the measurement terminal row SP1 can be connected with the ground through the discharge potential of the ship-shaped single-pole double-throw Switch1 and the crocodile clip of the insulating sheath.
The ship-shaped single-pole double-throw Switch1 comprises a test position, a common end and a discharge position, when the Switch is switched to the test position, a tested cable core of the measurement terminal row SP1 is suspended, and when the Switch is switched to the discharge position, the tested cable core of the measurement terminal row SP1 can be connected with the ground through an insulating sheath crocodile clip.
The ship-shaped single-pole double-throw Switch2 comprises a test position, a common end and a discharge position, wherein when the Switch is switched to the test position 1, the grounding terminal block SP2 is connected with the ground through an insulating sheath alligator clip, and when the Switch is switched to the discharge position 3, the grounding terminal block SP2 is suspended.
The working principle is as follows:
before the insulation resistance of the secondary cable core is measured, the boat-shaped single-pole double-throw Switch1 and the single-pole double-throw switches SW1-SW8 of the auxiliary device are switched to a discharge position, the boat-shaped single-pole double-throw Switch2 is switched to a test position, the insulating sheath crocodile clip is connected with a grounding point, and at the moment, the measuring terminal row SP1 and the grounding terminal row SP2 are grounded. The measured secondary cable cores are stripped by more than 5mm, the cable wiring holes of the measuring terminal row SP1 are sequentially accessed according to the core numbers, 8 secondary cable cores can be accessed at most for measurement, and the ground discharge before the insulation resistance measurement of the measured secondary cable cores on the measuring terminal row SP1 is completed.
Then, the boat-shaped single-pole double-throw Switch1 and the single-pole double-throw switches SW1-SW8 of the auxiliary device are switched to the test position, the boat-shaped single-pole double-throw Switch2 is kept at the test position, and at the moment, an insulation resistance tester is used for respectively completing insulation resistance measurement between secondary cable cores and between the cores to the ground.
When insulation resistance measurement is carried out between the secondary cable core, the red pen type V and the black pen type COM of the insulation resistance tester are respectively inserted into the pen type test holes of the two core wires to be measured in the measurement terminal row SP1, and the insulation resistance measurement between the core wires can be conveniently and quickly completed by pressing down the measurement button of the insulation resistance tester.
When the secondary cable core carries out insulation resistance measurement to the ground, a black pen meter COM of an insulation resistance tester is inserted into a pen meter test hole of the grounding terminal row SP2, a red pen meter V is sequentially inserted into a pen meter test hole of the measuring terminal row SP1, and a measuring button of the insulation resistance tester is pressed, so that the insulation resistance measurement of the core to the ground can be safely and reliably completed.
After the measurement is finished, the power supply of the insulation resistance tester is turned off, the red meter pen V and the black meter pen COM are taken out, the ship-shaped single-pole double-throw Switch1 of the auxiliary device is switched to a discharge position, finally the single-pole double-throw switches SW1-SW8 are sequentially switched to the discharge position, the ground is discharged after the measurement of the insulation resistance of the secondary cable core is finished, and the residual voltage in the core is eliminated.
The above-described embodiments are merely preferred embodiments of the present invention, and should not be construed as limiting the present invention, and the scope of the present invention is defined by the claims, and equivalents including technical features described in the claims. I.e., equivalent alterations and modifications within the scope hereof, are also intended to be within the scope of the utility model.
Claims (5)
1. The utility model provides a secondary cable core insulation measurement auxiliary device which characterized in that: the device comprises a measuring terminal row (1), a grounding terminal row (2), a first single-pole double-throw switch unit (3) and a second single-pole double-throw switch unit (4);
the first single-pole double-throw switch unit (3) comprises a plurality of single-pole double-throw switch modules, and the second single-pole double-throw switch unit (4) comprises a first single-pole double-throw switch and a second single-pole double-throw switch; the single-pole double-throw switch module, the first single-pole double-throw switch and the second single-pole double-throw switch comprise a test position, a public end and a discharge position;
the measuring terminal row (1) is electrically connected with the common end of the single-pole double-throw switch module through a lead, the discharging position of the single-pole double-throw switch module is electrically connected with the common end of the first single-pole double-throw switch through a lead, and the discharging position of the first single-pole double-throw switch is electrically connected with the grounding clamp through a lead;
the grounding terminal row (2) is electrically connected with the common end of the second single-pole double-throw switch through a wire, and the test position of the second single-pole double-throw switch is electrically connected with the grounding clamp through a wire.
2. The secondary cable core insulation measurement auxiliary device of claim 1, wherein: the measuring terminal row (1) and the grounding terminal row (2) are double-path high voltage-resistant terminal rows, and each double-path high voltage-resistant terminal of the measuring terminal row (1) is correspondingly and electrically connected with one single-pole double-throw switch module; the grounding terminal row (2) comprises two double-path high voltage-resistant terminals which are respectively and electrically connected with the first single-pole double-throw switch and the second single-pole double-throw switch.
3. The secondary cable core insulation measurement auxiliary device of claim 1, wherein: the grounding clip is an insulating sheath crocodile clip (5).
4. The secondary cable core insulation measurement auxiliary device of claim 2, wherein: every two double-path high-voltage-resistant terminals in the measuring terminal row (1) form a group of inter-core wire insulation measuring terminals; and each double-path high voltage-resistant terminal is provided with a serial number.
5. The secondary cable core insulation measurement auxiliary device of claim 4, wherein: each double-circuit high voltage-resistant terminal is provided with a grounding test hole, a grounding wire withdrawing hole, a meter pen test hole and a meter pen wire withdrawing hole.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122290229.1U CN215768853U (en) | 2021-09-22 | 2021-09-22 | Secondary cable core insulation measurement auxiliary device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122290229.1U CN215768853U (en) | 2021-09-22 | 2021-09-22 | Secondary cable core insulation measurement auxiliary device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN215768853U true CN215768853U (en) | 2022-02-08 |
Family
ID=80089608
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202122290229.1U Active CN215768853U (en) | 2021-09-22 | 2021-09-22 | Secondary cable core insulation measurement auxiliary device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN215768853U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN118011063A (en) * | 2024-04-10 | 2024-05-10 | 国网山东省电力公司淄博供电公司 | Direct-insertion type secondary cable test wiring device |
-
2021
- 2021-09-22 CN CN202122290229.1U patent/CN215768853U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN118011063A (en) * | 2024-04-10 | 2024-05-10 | 国网山东省电力公司淄博供电公司 | Direct-insertion type secondary cable test wiring device |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN210071942U (en) | Online grounding network and online grounding resistance monitoring device | |
| CN215768853U (en) | Secondary cable core insulation measurement auxiliary device | |
| CN103675586A (en) | Testing method and system for long-distance multi-core cable | |
| CN205427089U (en) | Cable switches on insulation test device | |
| WO2004102594A3 (en) | Method and testing equipment for checking the operation of a lightning arrester | |
| CN216082927U (en) | Resistance measuring device suitable for circuit breaker or isolating switch under high electric field intensity | |
| CN211698133U (en) | 428 acquisition chain cable rapid detector | |
| CN212989429U (en) | Power transformer high-voltage lead switching system | |
| CN212845482U (en) | Connector for power consumption test | |
| CN208270635U (en) | Multifunctional test equipment | |
| CN207908618U (en) | A kind of cable insulation detection auxiliary device | |
| CN106950511A (en) | A kind of DC power system standardized test interface arrangement | |
| CN219997189U (en) | Portable simple cable nuclear phase meter | |
| CN218272648U (en) | Transformer substation's cable tester | |
| CN221612946U (en) | Detection device for railway track circuit ground balance impedance | |
| CN218037155U (en) | Cable insulation testing equipment | |
| CN217332802U (en) | Cable calibration instrument | |
| CN207866859U (en) | A kind of KEW series high voltages megameter Special wiring device | |
| CN220894414U (en) | Motor winding resistance quick detection device | |
| CN114019245A (en) | Resistance measuring method suitable for circuit breaker or disconnecting switch under high electric field intensity | |
| CN219224905U (en) | Multifunctional insulation resistance test meter pen | |
| CN219164299U (en) | Intelligent high-voltage distribution switch with electricity larceny prevention type high-voltage metering function | |
| CN218497099U (en) | Integrated test device for detecting characteristics of high-voltage switch cabinet or circuit breaker | |
| CN220552929U (en) | Portable grounding line selection device and grounding line selection system | |
| CN210166418U (en) | Structure improved multimeter head |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |