CN203166382U - 10kV double-circuit breaker high-voltage switch cabinet - Google Patents
10kV double-circuit breaker high-voltage switch cabinet Download PDFInfo
- Publication number
- CN203166382U CN203166382U CN 201320178566 CN201320178566U CN203166382U CN 203166382 U CN203166382 U CN 203166382U CN 201320178566 CN201320178566 CN 201320178566 CN 201320178566 U CN201320178566 U CN 201320178566U CN 203166382 U CN203166382 U CN 203166382U
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- phase
- circuit breaker
- current transformer
- double
- switch cabinet
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Abstract
The utility model discloses a 10kV double-circuit breaker high-voltage switch cabinet. The 10kV double-circuit breaker high-voltage switch cabinet is composed of a cabinet body, a three-phase linkage circuit breaker, a handcart, a current transformer, three single-phase vacuum permanent magnetic circuit breakers capable of cutting off two-phase grounding short circuit, a zero-sequence current transformer and a grounding cable; the three-phase linkage circuit breaker is installed on the handcart; the current transformer is connected with the single-phase vacuum permanent magnetic circuit breakers; and leading-out terminals of the three single-phase vacuum permanent magnetic circuit breakers are converged together and are connected with the grounding cable through the zero-sequence current transformer. The 10kV double-circuit breaker high-voltage switch cabinet of the utility model is advantageous in structural simplicity and small occupied space and excellent arc-extinguishing performance for single-phase grounding faults, and can be widely used for 10kV system single-phase grounding arc extinguishing, intermittent grounding over voltage suppression, and electrification personnel injury reduction, and can protect the safety of electrical equipment.
Description
Technical field
The utility model relates to a kind of 10kV double-break device high-tension switch cabinet, is applicable to 10kV system one-phase ground protection.
Background technology
Along with power grid construction; 10kV system earth electric current constantly increases; use vacuum contactor can not satisfy system's needs; when two-phase or three-phase ground short circuit particularly take place; because vacuum contactor does not possess the short circuit interruption ability; the other configuration space switch cubicle of need be protected use in support, has increased to take up room.
Summary of the invention
The technical problems to be solved in the utility model provide a kind of simple in structure, take up room for a short time, can realize the 10kv double-break device high-tension switch cabinet of single-phase earthing extinguishing arc, overvoltage protection, human body electrification protection.
The 10kV double-break device high-tension switch cabinet that the utility model relates to, have the single-phase vacuum permanent-magnet breaker, zero sequence current mutual inductor, the earth cable that cut-off two relative ground circuit abilities and form by cabinet, three-phase linked circuit breaker, handcart, current transformer, three, described three-phase linked circuit breaker is installed on the handcart, be connected with described single-phase vacuum permanent-magnet breaker by described current transformer, described three single-phase vacuum permanent-magnet breaker leading-out terminals pool together, are connected with described earth cable through described zero sequence current mutual inductor.
The beneficial effect of this switch cubicle is:
1, perfect defencive function: have good single-phase earthing extinguishing arc, overvoltage, human body electrification protective capability; can suppress intermittent grounding surge, reduce electrification personnel injury; protection electric equipment safety; the single-phase vacuum permanent-magnet breaker has the two relative ground circuit abilities of cut-offfing, and the three-phase linked circuit breaker is protected in support and can be cut-off the system short-circuit electric current.
2, simple in structure, save the space: this switch cubicle is that an interval is grounded protection, has saved at interval, has reduced cost.
3, dependable performance: the single-phase vacuum permanent-magnet breaker is that 50000 operations are non-maintaining, and the single phase ground fault that can tackle frequent appearance can be widely used in the 10kV system.
Description of drawings
Fig. 1 is structural representation of the present utility model;
Fig. 2 is the left view of Fig. 1;
Fig. 3 is the vertical view of auxiliary switch chamber among Fig. 1;
Fig. 4 is primary system figure of the present utility model.
Among the figure: cabinet 1, handcart 2, three-phase linked circuit breaker 3, below moving contact 4, top moving contact 5, below fixed contact 6, top fixed contact 7, main switch chamber 8, low-pressure chamber 9, bus-bar room 10, branch bar 11, main bus bar 12, auxiliary switch chamber 13 connects copper bar 14, current transformer 15, single-phase vacuum permanent-magnet breaker 16, earth cable 17, zero sequence current mutual inductor 18, base 19, zero sequence current mutual inductor support 20.
Embodiment
As shown in the figure, this switch cubicle has cabinet 1, and cabinet 1 adopts KYN28-12A standard switch cabinet form, is provided with main switch chamber 8, low-pressure chamber 9, bus-bar room 10, auxiliary switch chamber 13 in the cabinet 1.
Establish handcart 2 in the main switch chamber 8, handcart 2 is provided with three-phase linked circuit breaker 3, three-phase linked circuit breaker 3 has top fixed contact 7, below fixed contact 6, top moving contact 5 and below moving contact 4, handcart 2 slides below three-phase linked circuit breaker 3, have service position and test position, namely handcart 2 can move between service position and test position.
Be provided with main bus bar 12 in the bus-bar room 10, main bus bar 12 causes another switch cubicle and passes through branch bar 11 and 7 connections of top fixed contact from a switch cubicle.
Auxiliary switch chamber 13 internal upper parts are provided with current transformer 15, auxiliary switch chamber 13 inner bottom parts fixedly have base 19, zero sequence current mutual inductor support 20 is set on the base 19, three single-phase vacuum permanent-magnet breakers 16 are fixedly arranged on the base 19, at zero sequence current mutual inductor support 20 zero sequence current mutual inductor 18 is arranged fixedly, three single-phase vacuum permanent-magnet breaker 16 leading-out terminals pool together, are connected with earth cable 17 through zero sequence current mutual inductor 18, and earth cable 17 usefulness wire clamps fix.
Ground protection control device, instrument, electrification display and other secondary devices are installed in the low-pressure chamber 9 and on the instrument door.
The switch cabinet one-time connected mode:
Mode of operation:
After confirming the good no problem of circuit breaker, handcart 2 and three-phase linked circuit breaker 3 can be moved part to be contained on the transfer car(buggy) and locking, shift-in handcart 2 and three-phase linked circuit breaker 3 make handcart 2 and three-phase linked circuit breaker 3 be in test position, all cabinet doors are shut and lock, confirm that three-phase linked circuit breaker 3 is in the separating brake position, can change handcart 2 over to run location by test position, three-phase linked circuit breaker 3 closes, top moving contact 5 and below moving contact 4 are closely contacted with top fixed contact 7 and below fixed contact 6 respectively, and device puts into operation.The operation of ground protection control device surveillance; judge the generation single phase ground fault, control corresponding separate single-phase vacuum permanent-magnet breaker 16 and close a floodgate, realize one-phase ground protection; after single phase ground fault disappears, control single-phase vacuum permanent-magnet breaker 16 separating brakes that closed a floodgate.When out-phase ground connection occurs in single-phase vacuum permanent-magnet breaker 16 closing protective processes, zero sequence current mutual inductor 18 outputs surpass set point in the switch cubicle, and ground protection control device control single-phase vacuum permanent-magnet breaker 16 separating brakes withdraw from guard mode.When system's generation three phase short circuit fault, current transformer 15 outputs surpass set point, and three-phase linked circuit breaker 3 separating brakes install out of service.
Claims (1)
1. 10kV double-break device high-tension switch cabinet, it is characterized in that: have the single-phase vacuum permanent-magnet breaker, zero sequence current mutual inductor, the earth cable that cut-off two relative ground circuit abilities and form by cabinet, three-phase linked circuit breaker, handcart, current transformer, three, described three-phase linked circuit breaker is installed on the handcart, be connected with described single-phase vacuum permanent-magnet breaker by described current transformer, described three single-phase vacuum permanent-magnet breaker leading-out terminals pool together, are connected with described earth cable through described zero sequence current mutual inductor.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320178566 CN203166382U (en) | 2013-04-11 | 2013-04-11 | 10kV double-circuit breaker high-voltage switch cabinet |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320178566 CN203166382U (en) | 2013-04-11 | 2013-04-11 | 10kV double-circuit breaker high-voltage switch cabinet |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203166382U true CN203166382U (en) | 2013-08-28 |
Family
ID=49027542
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201320178566 Expired - Fee Related CN203166382U (en) | 2013-04-11 | 2013-04-11 | 10kV double-circuit breaker high-voltage switch cabinet |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203166382U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110048335A (en) * | 2018-01-16 | 2019-07-23 | 天津平高智能电气有限公司 | A kind of switchgear |
| CN111193216A (en) * | 2019-12-20 | 2020-05-22 | 天津平高智能电气有限公司 | Arc extinction switch cabinet |
-
2013
- 2013-04-11 CN CN 201320178566 patent/CN203166382U/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110048335A (en) * | 2018-01-16 | 2019-07-23 | 天津平高智能电气有限公司 | A kind of switchgear |
| CN110048335B (en) * | 2018-01-16 | 2020-12-22 | 天津平高智能电气有限公司 | Switch cabinet |
| CN111193216A (en) * | 2019-12-20 | 2020-05-22 | 天津平高智能电气有限公司 | Arc extinction switch cabinet |
| CN111193216B (en) * | 2019-12-20 | 2021-12-31 | 天津平高智能电气有限公司 | Arc extinction switch cabinet |
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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: 20130828 Termination date: 20210411 |