CN105510863A - Short-circuiting system and short-circuiting method of secondary terminal of mutual inductor - Google Patents
Short-circuiting system and short-circuiting method of secondary terminal of mutual inductor Download PDFInfo
- Publication number
- CN105510863A CN105510863A CN201610036661.9A CN201610036661A CN105510863A CN 105510863 A CN105510863 A CN 105510863A CN 201610036661 A CN201610036661 A CN 201610036661A CN 105510863 A CN105510863 A CN 105510863A
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- China
- Prior art keywords
- terminal
- mutual inductor
- short
- secondary terminals
- short circuit
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Classifications
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R35/00—Testing or calibrating of apparatus covered by the other groups of this subclass
- G01R35/02—Testing or calibrating of apparatus covered by the other groups of this subclass of auxiliary devices, e.g. of instrument transformers according to prescribed transformation ratio, phase angle, or wattage rating
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R1/00—Details of instruments or arrangements of the types included in groups G01R5/00 - G01R13/00 and G01R31/00
- G01R1/02—General constructional details
- G01R1/04—Housings; Supporting members; Arrangements of terminals
- G01R1/0408—Test fixtures or contact fields; Connectors or connecting adaptors; Test clips; Test sockets
- G01R1/0416—Connectors, terminals
Abstract
The invention discloses a short-circuiting system and a short-circuiting method of a secondary terminal of a mutual inductor. The short-circuiting system comprises a high-voltage input terminal and a plurality of groups of short-circuiting circuits, wherein each group of the short-circuiting circuit comprises an output terminal and an option switch; one end of each option switch is connected with the corresponding output terminal and the other two ends of each option switch are connected with a grounding terminal and a measuring terminal of the high-voltage input terminal respectively; each option switch is used for switching the corresponding output terminal between the corresponding grounding terminal and the corresponding measuring terminal. The short-circuiting system provided by the invention can be connected with the secondary terminal of a mutual inductor body through modularized rapid wiring adapter coupling; functions including secondary side short-circuiting, grounding or winding an X terminal to be directly grounded of mutual inductors with various types are realized through a rapid wire jumper on an adapter coupling box.
Description
Technical field
The present invention relates to mutual inductor test, a kind of particularly mutual inductor secondary terminals short circuit system and short circuit method.
Background technology
The mutual inductor number of applications of current solid insulation gets more and more; and often need to hold direct ground connection (being applicable to pressure become) to mutual inductor secondary circuit short-circuit, ground connection (being applicable to stream become) or winding X in the real work of electrical test, relay protection; and mutual inductor secondary terminals due to connector lug less, Conventional attachment methods is very inconvenient.
The equipment connection of tradition mutual inductor secondary terminals often adopts the mode of tied silk solderless wrapped connection or crocodile clip, but both there is larger potential safety hazard and use inconvenience.Tied silk solderless wrapped connection is easily touched mutually in test, causes test figure mistake, does not slightly note after experiment just easily causing forgeing simultaneously, causes significant damage.The mode of crocodile clip then cannot be pressed from both sides surely because mutual inductor secondary terminals is too small, if carry out that chuck occurs in process in test to eject, be easy to the personnel that cause and injure, if grounding connection ejection in high-potting simultaneously, second open circuit can be caused, the serious consequence of equipment damage.Meanwhile, in a complete set first and second for mutual inductor is tested, mutual inductor secondary terminals will reconfiguration line frequently, and troublesome poeration, easily causes careless omission.
Summary of the invention
The object of this invention is to provide a kind of mutual inductor secondary terminals short circuit system and short circuit method, be connected with mutual inductor body secondary terminals by the switching of modular fast-wiring, and realize various type mutual inductor secondary circuit short-circuit, ground connection or winding X by the quick wire jumper on interconnecting device and hold direct grounding function.
In order to realize above object, the present invention is achieved by the following technical solutions:
A kind of mutual inductor secondary terminals short circuit system, is characterized in, comprises:
High voltage input terminal;
Some groups of short-circuit, often organize described short-circuit and comprise: lead-out terminal;
Selector switch, its one end is connected with lead-out terminal, and two ends connect earth terminal and the measuring junction of high voltage input terminal respectively in addition, switch between earth terminal and measuring junction for lead-out terminal.
Described input terminal comprises the first terminal and the second terminal, and between described the first terminal and the second terminal, short circuit connects.
Described short-circuit also comprises: self-inspection loop, and it is connected with described lead-out terminal circuit.
Described self-inspection loop comprises: the self-test switch of connecting with lead-out terminal and pilot lamp.
This mutual inductor secondary terminals short circuit system also comprises voltage table, its be connected to high voltage input terminal earth terminal and shielding hold between.
This mutual inductor secondary terminals short circuit system also comprises mutual inductor earth terminal, and it is for ground connection.
A kind of mutual inductor secondary terminals short circuit method, be characterized in, the method comprises following steps:
S1, is connected on output terminal and mutual inductor earth terminal by mutual inductor secondary terminals;
S2, switches the selector switch in different groups, lead-out terminal is connected and/or lead-out terminal is connected with the measuring junction of high voltage input terminal with the earth terminal of high voltage input terminal.
Also comprised before step S1:
S0, the self-test switch that closed and described output terminal is in series, checks that whether pilot lamp is luminous, if so, then illustrates that the shorted on both ends of output terminal is reliable, if not, then illustrates that the shorted on both ends of output terminal is unreliable.
The present invention compared with prior art, has the following advantages:
1, the mutual inductor of all kinds of model is adapted to, modular design, wiring Portable safety.
2, realize wire jumper function by short-circuit device in inside, primary connection can complete all tests, without the need to reconfiguration line, easy to operate.
3, inside arranges self-inspection loop, guarantee mutual inductor at the trial secondary terminals do not open a way, support equipment safety.
4, be provided with voltage table in device, reading operation can be completed, also can prevent testing crew warm swap circuit by mistake simultaneously.
Accompanying drawing explanation
Fig. 1 is the structural drawing of a kind of mutual inductor secondary terminals of the present invention short circuit system.
Embodiment
Below in conjunction with accompanying drawing, by describing a preferably specific embodiment in detail, the present invention is further elaborated.
As shown in Figure 1, a kind of mutual inductor secondary terminals short circuit system, comprises: high voltage input terminal; 4 groups of short-circuit, often organize described short-circuit and comprise: lead-out terminal; Selector switch, its one end is connected with lead-out terminal, and two ends connect earth terminal (E end) and the measuring junction (L end) of high voltage input terminal respectively in addition, switch between earth terminal and measuring junction for lead-out terminal.In the present embodiment, owing to being 4 groups of short-circuit, so lead-out terminal is 4 and is respectively IS1, IS2, IS3, IS4, corresponding selector switch is SQ1, SQ2, SQ3, SQ4.
Above-mentioned input terminal comprises the first terminal and the second terminal, and between described the first terminal and the second terminal, short circuit connects.
Above-mentioned short-circuit also comprises: self-inspection loop, and it is connected with described lead-out terminal circuit.
Above-mentioned self-inspection loop comprises: the self-test switch (SB1, SB2, SB3, SB4) of connecting with lead-out terminal and pilot lamp.For confirming mutual inductor secondary coil all reliable short circuits in inside, secondary terminals open circuit can not be there is when guaranteeing test and cause equipment to damage.
This short circuit system also comprises voltage table, and it is connected to the earth terminal of high voltage input terminal and shielding hold between (G hold), and the surrounding being wrapped in measurement home loop L is held in shielding, for eliminating the leakage current in circuit.
This short circuit system also comprises mutual inductor earth terminal, and it is for ground connection.
A kind of mutual inductor secondary terminals short circuit method, the method comprises following steps:
S1, is connected on output terminal and mutual inductor earth terminal by mutual inductor secondary terminals;
S2, switches the selector switch in different groups, lead-out terminal is connected and/or lead-out terminal is connected with the measuring junction of high voltage input terminal with the earth terminal of high voltage input terminal.
In a particular embodiment, according to mutual inductor secondary terminals feature, select three groups of lead-out terminals, the 4th group of not wiring.Can test after lead-out terminal, high input voltage terminal, mutual inductor ground terminal are all reliably connected.
During as carried out dielectric voltage withstand test at transformer high voltage side, then all selector switch (SQ1, SQ2, SQ3, SQ4) are all allocated to ground side, the requirement of the whole ground connection of secondary terminals in testing can be realized.
As carried out the dielectric voltage withstand test between low pressure winding in mutual inductor low-pressure side, then will selector switch corresponding to the winding of test be needed to be allocated to measuring junction, all the other be allocated to earth terminal, can test.Measurement between multiple winding all completes easily by internal jumper, without the need to frequent reconfiguration line again.Go back during measurement that Observable voltage table is auxiliary to be tested.
In a particular embodiment, also comprise before above-mentioned steps S1:
S0, the self-test switch that closed and described output terminal is in series, checks that whether pilot lamp is luminous, if so, then illustrates that the shorted on both ends of output terminal is reliable, if not, then illustrates that the shorted on both ends of output terminal is unreliable.
In sum, a kind of mutual inductor secondary terminals short circuit system of the present invention and short circuit method, be connected with mutual inductor body secondary terminals by the switching of modular fast-wiring, and realize various type mutual inductor secondary circuit short-circuit, ground connection or winding X by the quick wire jumper on interconnecting device and hold the functions such as direct ground connection.
Although content of the present invention has done detailed introduction by above preferred embodiment, will be appreciated that above-mentioned description should not be considered to limitation of the present invention.After those skilled in the art have read foregoing, for multiple amendment of the present invention and substitute will be all apparent.Therefore, protection scope of the present invention should be limited to the appended claims.
Claims (8)
1. a mutual inductor secondary terminals short circuit system, is characterized in that, comprise:
High voltage input terminal;
Some groups of short-circuit, often organize described short-circuit and comprise: lead-out terminal;
Selector switch, its one end is connected with lead-out terminal, and two ends connect earth terminal and the measuring junction of high voltage input terminal respectively in addition, switch between earth terminal and measuring junction for lead-out terminal.
2. mutual inductor secondary terminals short circuit system as claimed in claim 1, it is characterized in that, described input terminal comprises the first terminal and the second terminal, and between described the first terminal and the second terminal, short circuit connects.
3. mutual inductor secondary terminals short circuit system as claimed in claim 2, it is characterized in that, described short-circuit also comprises: self-inspection loop, and it is connected with described lead-out terminal circuit.
4. mutual inductor secondary terminals short circuit system as claimed in claim 1, it is characterized in that, described self-inspection loop comprises: the self-test switch of connecting with lead-out terminal and pilot lamp.
5. the mutual inductor secondary terminals short circuit system as described in any one of claim 1-4, is characterized in that, also comprise voltage table, its be connected to high voltage input terminal earth terminal and shielding hold between.
6. mutual inductor secondary terminals short circuit system as claimed in claim 1, it is characterized in that, also comprise mutual inductor earth terminal, it is for ground connection.
7. a mutual inductor secondary terminals short circuit method, it is characterized in that, the method comprises following steps:
S1, is connected on output terminal and mutual inductor earth terminal by mutual inductor secondary terminals;
S2, switches the selector switch in different groups, lead-out terminal is connected and/or lead-out terminal is connected with the measuring junction of high voltage input terminal with the earth terminal of high voltage input terminal.
8. mutual inductor secondary terminals short circuit method as claimed in claim 7, is characterized in that, also comprised before step S1:
S0, the self-test switch that closed and described output terminal is in series, checks that whether pilot lamp is luminous, if so, then illustrates that the shorted on both ends of output terminal is reliable, if not, then illustrates that the shorted on both ends of output terminal is unreliable.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610036661.9A CN105510863A (en) | 2016-01-20 | 2016-01-20 | Short-circuiting system and short-circuiting method of secondary terminal of mutual inductor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610036661.9A CN105510863A (en) | 2016-01-20 | 2016-01-20 | Short-circuiting system and short-circuiting method of secondary terminal of mutual inductor |
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| Publication Number | Publication Date |
|---|---|
| CN105510863A true CN105510863A (en) | 2016-04-20 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610036661.9A Pending CN105510863A (en) | 2016-01-20 | 2016-01-20 | Short-circuiting system and short-circuiting method of secondary terminal of mutual inductor |
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Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201464617U (en) * | 2009-07-13 | 2010-05-12 | 重庆市电力公司超高压局 | Portable connecting wire switching device |
| US20120139555A1 (en) * | 2007-08-16 | 2012-06-07 | Radian Research, Inc. | Instrument transformer test equipment and method |
| CN102901848A (en) * | 2012-10-23 | 2013-01-30 | 四川省电力公司攀枝花电业局 | Terminal box for connecting secondary winding of current transformer and test instrument |
| CN102944700A (en) * | 2012-10-30 | 2013-02-27 | 武汉华源电力工程有限责任公司 | Secondary wiring device for test of characteristics of a current transformer |
| CN103812098A (en) * | 2012-11-12 | 2014-05-21 | 苏州工业园区新宏博通讯科技有限公司 | Current transformer secondary open circuit protection device |
| CN104062623A (en) * | 2014-07-03 | 2014-09-24 | 国家电网公司 | Low-voltage-side short circuit device for high-voltage electric transformer |
-
2016
- 2016-01-20 CN CN201610036661.9A patent/CN105510863A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20120139555A1 (en) * | 2007-08-16 | 2012-06-07 | Radian Research, Inc. | Instrument transformer test equipment and method |
| CN201464617U (en) * | 2009-07-13 | 2010-05-12 | 重庆市电力公司超高压局 | Portable connecting wire switching device |
| CN102901848A (en) * | 2012-10-23 | 2013-01-30 | 四川省电力公司攀枝花电业局 | Terminal box for connecting secondary winding of current transformer and test instrument |
| CN102944700A (en) * | 2012-10-30 | 2013-02-27 | 武汉华源电力工程有限责任公司 | Secondary wiring device for test of characteristics of a current transformer |
| CN103812098A (en) * | 2012-11-12 | 2014-05-21 | 苏州工业园区新宏博通讯科技有限公司 | Current transformer secondary open circuit protection device |
| CN104062623A (en) * | 2014-07-03 | 2014-09-24 | 国家电网公司 | Low-voltage-side short circuit device for high-voltage electric transformer |
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Application publication date: 20160420 |
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