CN207114698U - A kind of line parameter circuit value auxiliary test unit - Google Patents
A kind of line parameter circuit value auxiliary test unit Download PDFInfo
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- CN207114698U CN207114698U CN201720770754.4U CN201720770754U CN207114698U CN 207114698 U CN207114698 U CN 207114698U CN 201720770754 U CN201720770754 U CN 201720770754U CN 207114698 U CN207114698 U CN 207114698U
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Abstract
The utility model discloses a kind of line parameter circuit value auxiliary test unit, suppresses unit with three-phase electricity connection, including high-potting line unit, A.C. contactor unit, switch element, induced voltage；The input terminal of high-potting line unit is connected with each phase power transmission line of three-phase electricity circuit respectively, the lead-out terminal of high-potting line unit is connected with one end of A.C. contactor unit, one end that the other end of A.C. contactor unit suppresses unit with induced voltage all the way is connected, the fixing end connection of another way and switch element；Induced voltage suppresses the other end ground connection of unit, another fixing end ground connection of switch element.The number of division earthing knife-switch is reduced, test efficiency is improved, induced voltage can be suppressed, conveniently shakes insulation and nuclear phase work；Can on the spot division line-to-ground so as to increasing experiment security.
Description
Technical field
Power circuit technical field of measurement and test is the utility model is related to, especially a kind of line parameter circuit value auxiliary test unit.
Background technology
The higher circuit of line influence voltage forms larger threat to workmen's personal safety, to ensure personnel and equipment
Safety, experiment thread-changing need by line side earthing knife-switch close position, then could thread-changing, earthing knife-switch is separated again after thread-changing and tested, point
It is many to close the number of earthing knife-switch, takes a lot.
In the experiment of conventional high induction voltage circuit, during Insulation test, induced voltage too high (more than 10000V) is very
Easily insulating megger is punctured, testing crew is threatened safely, circuit nuclear phase is grounded often through by circuit one side, then
See that the reduction of induced voltage simply judges phase sequence and insulation, not intuitively.
Existing scheme can suppress induced voltage by induced voltage suppressor, but can not reduce and be grounded in experiment
The division number of disconnecting link, therefore the line parameter circuit value testing time can not be shortened.
Utility model content
The purpose of this utility model is to provide a kind of line parameter circuit value auxiliary test unit, on the one hand reduces time of division earthing knife-switch
Number, test efficiency is improved, on the other hand can suppress induced voltage, conveniently shake insulation and nuclear phase work；Another further aspect can be on the spot
Division line-to-ground is so as to increasing experiment security.
To achieve the above object, the utility model uses following technical proposals：
A kind of line parameter circuit value auxiliary test unit, with three-phase electricity connection, it is characterised in that including high-potting line list
Member, A.C. contactor unit, switch element, induced voltage suppress unit；The input terminal of high-potting line unit is respectively with three
Each phase power transmission line connection of phase electric line, the lead-out terminal of high-potting line unit connect with one end of A.C. contactor unit
Connect, one end that the other end of A.C. contactor unit suppresses unit with induced voltage all the way is connected, another way and switch element
One fixing end connects；Induced voltage suppresses the other end ground connection of unit, another fixing end ground connection of switch element.
Further, the high-potting line unit includes three groups of high-potting lines, the input of each group of high-potting line
End is connected with test clip respectively, and test clip is connected with each phase power transmission line of three-phase electricity circuit respectively；Each group of high-potting line
Output end be connected with testing terminal, testing terminal is connected with the input of A.C. contactor respectively.
Further, induced voltage, which suppresses unit, includes some electric capacity being connected in series.
The beneficial effects of the utility model are,
The utility model Hi-pot test line one end connects high-voltage line to be measured, and the other end is sequentially connected A.C. contactor, sensing
Voltage suppresses unit, when shake insulation operation, carries out shaking insulation after A.C. contactor unit is closed, is closed after having shaken a phase
Switch element ground connection electric discharge, can avoid personal Danger Electric shock risk；Even if induced voltage can also pass through after the breakdown of A.C. contactor unit
Induced voltage suppresses unit ground connection, ensure that personal safety.When carrying out line test Wiring step, A.C. contactor unit and
Switch element is closed at being discharged, and multiple grounding ensures personal safety, and avoids the repetition of switch element during thread-changing
Opening and closing.
Brief description of the drawings
Fig. 1 is the utility model line parameter circuit value auxiliary test unit schematic diagram；
Fig. 2 is that induced voltage suppresses unit connection relation schematic diagram；
Wherein, 1, circuit to be measured, 2, high-potting line, 21, test clip, 22, testing terminal, 3, A.C. contactor, 4, lock
Knife discharge switch, 5, electric capacity suppress unit.
Embodiment
As shown in figure 1, a kind of line parameter circuit value auxiliary test unit, is connected with circuit under test 1, the input of high-potting line 2
End is connected with circuit 1 to be measured respectively by test clip 21, and the output end of Hi-pot test line 2 passes through testing terminal 22 and ac contactor
Device 3 connects；Because induced voltage seldom can exceed that 10kV, A.C. contactor 3 selects pressure-resistant scope to be fully met in more than 3.6kV
It is required that the other end of A.C. contactor 3 is connected with plug-in strip discharge switch 4 all the way, another way connects with induced voltage suppression module 5
Connect；The other end ground connection of plug-in strip discharge switch 4, the other end ground connection of induced voltage suppression module 5.
As shown in Fig. 2 induced voltage suppression module 5 uses 24 pressure-resistant 450V, the CBB electric capacity of capacity 50, pass through series connection
Realize.Wherein IN is high-pressure side, and GND is earth terminal.By series connection, the final electric capacity of induced voltage suppression module is 2 μ F.
A kind of line parameter circuit value auxiliary test methods, comprise the following steps：
Shake isolation step：Closure state need to be in by shaking A.C. contactor 3 before isolation step is carried out.Connect insulating megger,
Treat successively survey line road 1 insulated, nuclear phase testing experiment, insulating megger shaken a phase electricity, plug-in strip discharge switch 4 manually end close
Close, discharged, electric discharge carries out the Insulation test experiment of next phase electricity after terminating, until completing the Insulation Test behaviour of three-phase electricity
Make.
Line parameter circuit value p-wire Connection Step, is specifically included following：A.C. contactor 3 and plug-in strip discharge switch 4 all in
Closure state, the p-wire of parameter testing instrument is connected with circuit 1 to be measured.
Line parameter circuit value testing procedure：A.C. contactor 3 and plug-in strip discharge switch 4 carry out parameter survey all in off-state
Amount.
It is not new to this practicality although above-mentioned specific embodiment of the present utility model is described with reference to accompanying drawing
The limitation of type protection domain, one of ordinary skill in the art should be understood that on the basis of the technical solution of the utility model, ability
Field technique personnel need not pay the various modifications that creative work can make or deformation still in protection model of the present utility model
Within enclosing.
Claims (3)
1. a kind of line parameter circuit value auxiliary test unit, with three-phase electricity connection, it is characterised in that including high-potting line list
Member, A.C. contactor unit, switch element, induced voltage suppress unit；The input terminal of high-potting line unit is respectively with three
Each phase power transmission line connection of phase electric line, the lead-out terminal of high-potting line unit connect with one end of A.C. contactor unit
Connect, one end that the other end of A.C. contactor unit suppresses unit with induced voltage all the way is connected, another way and switch element
One fixing end connects；Induced voltage suppresses the other end ground connection of unit, another fixing end ground connection of switch element.
A kind of 2. line parameter circuit value auxiliary test unit as claimed in claim 1, it is characterised in that the high-potting line unit
Including three groups of high-potting lines, the input of each group of high-potting line is connected with test clip respectively, test clip respectively with three-phase
Each phase power transmission line connection of electric line；The output end of each group of high-potting line is connected with testing terminal, testing terminal difference
It is connected with the input of A.C. contactor.
3. a kind of line parameter circuit value auxiliary test unit as claimed in claim 1, it is characterised in that induced voltage suppresses unit bag
Include some electric capacity being connected in series.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720770754.4U CN207114698U (en) | 2017-06-29 | 2017-06-29 | A kind of line parameter circuit value auxiliary test unit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720770754.4U CN207114698U (en) | 2017-06-29 | 2017-06-29 | A kind of line parameter circuit value auxiliary test unit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207114698U true CN207114698U (en) | 2018-03-16 |
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ID=61591956
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201720770754.4U Active CN207114698U (en) | 2017-06-29 | 2017-06-29 | A kind of line parameter circuit value auxiliary test unit |
Country Status (1)
| Country | Link |
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| CN (1) | CN207114698U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110794214A (en) * | 2019-11-11 | 2020-02-14 | 山东送变电工程有限公司 | Integrated testing device and method for integrated circuit parameter insulation |
-
2017
- 2017-06-29 CN CN201720770754.4U patent/CN207114698U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110794214A (en) * | 2019-11-11 | 2020-02-14 | 山东送变电工程有限公司 | Integrated testing device and method for integrated circuit parameter insulation |
| CN110794214B (en) * | 2019-11-11 | 2021-08-20 | 山东送变电工程有限公司 | Integrated testing device and method for integrated circuit parameter insulation |
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