CN203166382U - 10kV double-circuit breaker high-voltage switch cabinet - Google Patents

10kV double-circuit breaker high-voltage switch cabinet Download PDF

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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
Authority
CN
China
Prior art keywords
phase
circuit breaker
current transformer
double
switch cabinet
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.)
Expired - Fee Related
Application number
CN 201320178566
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Chinese (zh)
Inventor
黄钢
张永旭
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Jinzhou Tuoxin Power & Electronics Co
Original Assignee
Jinzhou Tuoxin Power & Electronics Co
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Jinzhou Tuoxin Power & Electronics Co filed Critical Jinzhou Tuoxin Power & Electronics Co
Priority to CN 201320178566 priority Critical patent/CN203166382U/en
Application granted granted Critical
Publication of CN203166382U publication Critical patent/CN203166382U/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

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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

10kV double-break device high-tension switch cabinet
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:
Main bus bar 12 joins with branch bar 11; Branch bar 11 connects by being connected copper bar 14 with the top fixed contact 7 of separate handcart 2 and three-phase linked circuit breaker 3 separately; Handcart 2 and three-phase linked circuit breaker 3, below fixed contact 6 are connected with separate current transformer 15 ends of incoming cables separately by connecting copper bar 14 respectively; Current transformer 15 leading-out terminals are connected with separate single-phase vacuum permanent-magnet breaker 16 ends of incoming cables separately; Single-phase vacuum permanent-magnet breaker 16 leading-out terminals link together and are connected with earth cable 17.Earth cable 17 passes from zero sequence current mutual inductor 18, is connected with ground network.
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.
CN 201320178566 2013-04-11 2013-04-11 10kV double-circuit breaker high-voltage switch cabinet Expired - Fee Related CN203166382U (en)

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)

* Cited by examiner, † Cited by third party
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

Cited By (4)

* Cited by examiner, † Cited by third party
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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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