CN205656925U - Neutral resistance ware suitable for high -power heavy current - Google Patents
Neutral resistance ware suitable for high -power heavy current Download PDFInfo
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- CN205656925U CN205656925U CN201620263551.1U CN201620263551U CN205656925U CN 205656925 U CN205656925 U CN 205656925U CN 201620263551 U CN201620263551 U CN 201620263551U CN 205656925 U CN205656925 U CN 205656925U
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- resistor
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- bedding
- phlogopite
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Abstract
The utility model belongs to the technical field of the resistor technique and specifically relates to a neutral resistance ware suitable for high -power heavy current is related to, it includes resistor, installation curb plate and post insulators, installation curb plate fixed mounting resistor, post insulators set up in the bottom of installation curb plate, the resistance card of resistor is the nichrome resistance card, and a plurality of jet -beddings have been seted up to the resistance card, and the trough rim of jet -bedding is toward bending outward, adopts the phlogopite intersect between jet -bedding and the jet -bedding and separates, and the phlogopite parting bead has all been gone here and there to the upper and lower side of resistance card, and phlogopite parting bead outside is wrapped and is equipped with the steel sheet and bordures, bordures to the steel sheet and presses the muscle, and it increases resistor weight, can bear big current rush, improvement resistor security performance and life.
Description
Technical field
This utility model relates to resistor technologies field, especially relates to a kind of neutral point grounding resistor being applicable to high-power high-current.
Background technology
The existing resistance to rush of current of earth resistance resistor disc is low, and identical parameters volume is big, temperature rise.It is said that in general, resistor plays main metering function, phase voltage major part will drop on this resistor, and the power that it absorbs is substantially equal to the product of phase voltage and fault current, and its power is often up to thousands of to tens thousand of kW.Resistor disc is under the influence of dash current, and at short notice, resistance temperature raises rapidly.Additionally, temperature rising can cause resistor disc and air generation oxidation reaction, temperature rise is the most violent, reacts the most violent.After resistor disc oxidation by air, the electrical characteristic of resistor disc can be allowed to change, affect the functional reliability of resistor disc, reduce the working life of resistor disc.The defect of existing product: the earthing mode of big electric current is big (100 ~ 2 000 A) because of its short circuit current, persistent period short (10 s), temperature rise (reaches as high as about 900 DEG C), to the performance impact of grounding resistor alloy material clearly, it is susceptible to the accident that resistor damages because of scorification or deformation.
Summary of the invention
The technical problems to be solved in the utility model is to provide a kind of neutral point grounding resistor being applicable to high-power high-current, and it increases resistor weight, can bear heavy current impact, improves resistor security performance and service life.
This utility model uses following technological means to realize utility model purpose.
A kind of neutral point grounding resistor being applicable to high-power high-current, it includes resistor, installs side plate and support insulator, installs side plate and fixedly mounts described resistor, and support insulator is arranged at the bottom installing side plate；The resistor disc of described resistor is nichrome resistor disc, resistor disc offers some jet-beddings, the bending outward of the trough rim of jet-bedding, use phlogopite to intersect between jet-bedding with jet-bedding to separate, the side up and down of resistor disc has all gone here and there phlogopite parting bead, outside phlogopite parting bead, bag is provided with steel disc bound edge again, and steel disc bound edge is carried out beading.
Further, described installation side plate offers louvre.
Further, described support insulator is high intensity porcelain knob.
This utility model has the beneficial effect that a kind of neutral point grounding resistor being applicable to high-power high-current described in the utility model, and it increases resistor weight, can bear heavy current impact, improves resistor security performance and service life.
Accompanying drawing explanation
Fig. 1 is resistor disc left view of the present utility model.
Fig. 2 is the structural representation of resistor disc string phlogopite parting bead of the present utility model.
Fig. 3 is the structural representation that resistor disc of the present utility model arranges steel disc bound edge.
Fig. 4 is the structural representation of resistor disc bound edge beading of the present utility model.
Fig. 5 is the partial schematic diagram of resistor disc bound edge beading of the present utility model.
Fig. 6 is front view of the present utility model.
Fig. 7 is left view of the present utility model.
Detailed description of the invention
This utility model provides a kind of neutral point grounding resistor being applicable to high-power high-current, is described in detail this utility model below in conjunction with the accompanying drawings.
As described in Fig. 1 ~ Fig. 7, a kind of neutral point grounding resistor being applicable to high-power high-current described in the utility model, it includes resistor, installs side plate 4 and support insulator 5, installs side plate 4 and fixedly mounts described resistor, and support insulator 5 is arranged at the bottom installing side plate 4；The resistor disc 1 of described resistor is nichrome resistor disc, resistor disc 1 offers some jet-beddings 10, trough rim 11 bending outward of jet-bedding 10, use phlogopite to intersect between jet-bedding 10 with jet-bedding 10 to separate, the side up and down of resistor disc 1 has all gone here and there phlogopite parting bead 2, the outside bag again of phlogopite parting bead 2 is provided with steel disc bound edge 3, and steel disc bound edge 3 is carried out beading.Described resistor disc 1 has the tearing port that some jet-beddings 10 are formed, resistance can arbitrarily be adjusted by the increase and decrease of groove number, with traditional resistor sheet 1 in order to increase compared with resistance all removes the resistance in whole piece jet-bedding 10, part is needed trough rim 11 bending outward of the jet-bedding 10 removed by the resistor disc 1 of described resistor originally, reduce due to slot pitch after bending, entirety reduces volume, and adds resistor weight, thus reaches to bear the purpose of heavy current impact.Use phlogopite to intersect between groove and the groove of the jet-bedding 10 of described resistor disc 1 to separate, prevent electric power from producing heat and cause adhesive, affect the stability of resistance, string has phlogopite parting bead 2 and bag to set steel disc bound edge 3 again, increase resistor disc 1 intensity, by carrying out beading between the every groove outside steel disc bound edge 3, prevent from sliding between groove and groove, reach fixation.
Further, described installation side plate 4 offers louvre, installs side plate 4 and installs for resistor, play fixation, and Intermediate Gray louvre, increases heat loss through convection, greatly reduce the heat between resistor.Further, described support insulator 5 is high intensity porcelain knob, uses high intensity porcelain to make, and good electric property, creep age distance are high.Preferably, the groove end corner of described jet-bedding 10 uses oval structure, it is possible to decrease electric current density, prevents big heating effect of current from causing resistor disc 1 to melt.
In sum, a kind of neutral point grounding resistor being applicable to high-power high-current described in the utility model has the advantage that one, the jet-bedding of resistor disc 1 10 by tear, bending, increase resistor weight, heavy current impact can be born.Two, compact conformation, volume are little, connect reliable, save cabinet space.Three, using double insulation, stability is strong, and electric property is high.Four, temperature rise coefficient is low, resistance varying-ratio is little.
The above is only better embodiment of the present utility model, therefore all equivalence changes done according to structure, feature and the principle described in this utility model patent claim or modification, all it is included in this utility model patent claim.
Claims (3)
1. the neutral point grounding resistor being applicable to high-power high-current, it is characterized in that: it includes resistor, installs side plate (4) and support insulator (5), installing side plate (4) and fixedly mount described resistor, support insulator (5) is arranged at the bottom installing side plate (4)；The resistor disc (1) of described resistor is nichrome resistor disc, resistor disc (1) offers some jet-beddings (10), trough rim (11) bending outward of jet-bedding (10), use phlogopite to intersect between jet-bedding (10) with jet-bedding (10) to separate, the side up and down of resistor disc (1) has all gone here and there phlogopite parting bead (2), the outside bag again of phlogopite parting bead (2) is provided with steel disc bound edge (3), and steel disc bound edge (3) is carried out beading.
A kind of neutral point grounding resistor being applicable to high-power high-current the most according to claim 1, is characterized in that: described installation side plate (4) offers louvre.
A kind of neutral point grounding resistor being applicable to high-power high-current the most according to claim 2, is characterized in that: described support insulator (5) is high intensity porcelain knob.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620263551.1U CN205656925U (en) | 2016-03-31 | 2016-03-31 | Neutral resistance ware suitable for high -power heavy current |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620263551.1U CN205656925U (en) | 2016-03-31 | 2016-03-31 | Neutral resistance ware suitable for high -power heavy current |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205656925U true CN205656925U (en) | 2016-10-19 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201620263551.1U Active CN205656925U (en) | 2016-03-31 | 2016-03-31 | Neutral resistance ware suitable for high -power heavy current |
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| Country | Link |
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| CN (1) | CN205656925U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105702396A (en) * | 2016-03-31 | 2016-06-22 | 湖南福德电气有限公司 | Neutral grounding resistor applicable to high power and high current |
| CN107039133A (en) * | 2017-05-27 | 2017-08-11 | 广东福德电子有限公司 | A kind of noninductive template wire wound resistor of resistance to deformation |
| CN107369509A (en) * | 2017-06-30 | 2017-11-21 | 湖南福德电气有限公司 | A kind of resistor disc binding structure |
-
2016
- 2016-03-31 CN CN201620263551.1U patent/CN205656925U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105702396A (en) * | 2016-03-31 | 2016-06-22 | 湖南福德电气有限公司 | Neutral grounding resistor applicable to high power and high current |
| CN107039133A (en) * | 2017-05-27 | 2017-08-11 | 广东福德电子有限公司 | A kind of noninductive template wire wound resistor of resistance to deformation |
| CN107369509A (en) * | 2017-06-30 | 2017-11-21 | 湖南福德电气有限公司 | A kind of resistor disc binding structure |
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| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |