CN205050692U - Distribution transformer on post with built -in protect function - Google Patents

Distribution transformer on post with built -in protect function Download PDF

Info

Publication number
CN205050692U
CN205050692U CN201520815403.1U CN201520815403U CN205050692U CN 205050692 U CN205050692 U CN 205050692U CN 201520815403 U CN201520815403 U CN 201520815403U CN 205050692 U CN205050692 U CN 205050692U
Authority
CN
China
Prior art keywords
transformer
post
cut
distribution transformer
offfing
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
CN201520815403.1U
Other languages
Chinese (zh)
Inventor
李洪涛
魏彩霞
孙业荣
贾俊
郝良
李西勋
张立志
钟伟
王合建
徐东伟
吴蔚佳
王凯
张宏健
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.)
Dianyan Huayuan Power Tech Co Ltd Beijing
Intelligent Electric Co Ltd Of Shandong Electrician Electric Group
XUJI TRANSFORMER CO Ltd
Cooper Electronic Technologies Shanghai Co Ltd
Shandong Electrical Engineering and Equipment Group Co Ltd
Taizhou Power Supply Co of Jiangsu Electric Power Co
Electric Power Research Institute of State Grid Beijing Electric Power Co Ltd
Original Assignee
Dianyan Huayuan Power Tech Co Ltd Beijing
Intelligent Electric Co Ltd Of Shandong Electrician Electric Group
XUJI TRANSFORMER CO Ltd
Cooper Electronic Technologies Shanghai Co Ltd
Shandong Electrical Engineering and Equipment Group Co Ltd
Taizhou Power Supply Co of Jiangsu Electric Power Co
Electric Power Research Institute of State Grid Beijing Electric Power Co Ltd
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 Dianyan Huayuan Power Tech Co Ltd Beijing, Intelligent Electric Co Ltd Of Shandong Electrician Electric Group, XUJI TRANSFORMER CO Ltd, Cooper Electronic Technologies Shanghai Co Ltd, Shandong Electrical Engineering and Equipment Group Co Ltd, Taizhou Power Supply Co of Jiangsu Electric Power Co, Electric Power Research Institute of State Grid Beijing Electric Power Co Ltd filed Critical Dianyan Huayuan Power Tech Co Ltd Beijing
Priority to CN201520815403.1U priority Critical patent/CN205050692U/en
Application granted granted Critical
Publication of CN205050692U publication Critical patent/CN205050692U/en
Expired - Fee Related legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Landscapes

  • Housings And Mounting Of Transformers (AREA)

Abstract

The utility model provides a distribution transformer on post with built -in protect function, includes high -pressure inlet wire, oil tank and high voltage winding, is provided with backup fuse and three -phase magnetism in the oil tank and keeps cut -offfing the ware, and backup fuse keeps cut -offfing ware lug connection with the insulation support and the three -phase magnetism of high -pressure inlet wire respectively, and three -phase magnetism keeps cut -offfing the ware and is connected with high voltage winding. Three -phase magnetism keeps cut -offfing the ware and sets up in the medial surface of oil tank, and its position is higher than distribution transformer's iron core top yoke's on the post top. This transformer has been realized the protection of two segmentations, the too high protection of oil temperature, the oil level of overload and trouble and has been crossed the manual combined floodgate function of low shutting, has been divided disconnected / functions such as closed load current, need not change equipment during overload protection, repeatedly usable resumes the power supply soon, and administrative cost is low, avoid the transformer to lack and moved mutually, reduced the transformer fault rate, enhancing power supply reliability, area load switching transformer can be realized, the power that once inclines is used for keeping apart, can effectively avoid preventing the too high trouble that arouses of oil temperature in the operation of the oily warm purgation of height.

Description

Distribution transformer on a kind of post with built-in defencive function
Technical field
The utility model relates to one and has overload, high oil temperature protection, and distribution transformer on the post of oil level too low locking closing by hand function, belongs to distribution transformer technical field.
Background technology
Distribution transformer adopt external high pressure side to install additional traditional protection mode that fuse switch and low-pressure side install circuit breaker additional on common post; this protected mode can affect by external environment condition and human factor; the reliability protected is caused to reduce; when high oil temperature in transformer and pasta decline; all can not get protection; the probability causing transformer to break down strengthens, and power supply quality and reliability can not be guaranteed.In addition, this traditional protection mode only adopts phase-splitting to excise fault, easily causes Transformer Phase-deficient Operation; Need after high voltage drop-out type fuse cutout action to change fuse, complicated operation, restore electricity slow, management cost rises.
Summary of the invention
The deficiency that the utility model exists for distribution transformer resist technology on existing post, proposes distribution transformer on a kind of protective value is good, reliability the is high post with built-in defencive function.
Distribution transformer on the post with built-in defencive function of the present utility model, by the following technical solutions:
This transformer, comprise high pressure inlet wire, fuel tank and high pressure winding, be provided with backup fuse and three-phase magnetic in fuel tank and keep cut-off device, backup fuse keeps cut-off device to be directly connected with the insulating sleeve of high pressure inlet wire and three-phase magnetic respectively, three-phase magnetic maintenance cut-off device and high pressure winding switching.
Described three-phase magnetic keeps cut-off device to be arranged at the medial surface of fuel tank, and its position is higher than the top of yoke on the iron core of distribution transformer on post.On iron core, yoke top oil is oil temperature peak in fuel tank, oil temperature hottest point accurately can be delivered to three-phase magnetic and keep cut-off device.
The utility model achieve transformer overload and fault two-part protection, high oil temperature protection, the too low locking of oil level divides the function such as/closing function, disjunction/closed load electric current; Compared with traditional protection scheme, tool has the following advantages:
1. during overload protection (magnetic keeps cut-off device action), do not need more exchange device, reusable, after getting rid of abnormal condition load or fault, can directly again close, restore electricity fast, management cost is low.
2. three-phase magnetic keeps cut-off device action to be that single-phase induction and three-phase are threaded off, and avoids Transformer Phase-deficient Operation, reduces transformer fault rate, improve power supply reliability.
3. keep cut-off device deciliter by three-phase magnetic, realize on-load switching transformer.
4. can cut-off device be kept as isolating switch three-phase magnetic, be used for isolating transformer primary side power supply.
5. transformer effectively can be avoided to run under high oil temperature, prevent high oil temperature from causing transformer fault.
6., when oil level is too low, three-phase magnetic keeps cut-off device locking closing by hand function.
Accompanying drawing explanation
Fig. 1 is the principle schematic of distribution transformer protection on the utility model post.
Fig. 2 is the setting position schematic diagram that three-phase magnetic keeps cut-off device.
Fig. 3 is the surface structure schematic diagram that three-phase magnetic keeps cut-off device.
Fig. 4 is the principle schematic that three-phase magnetic keeps cut-off device.
Fig. 5 is the time-current chracteristic curve chart of distribution transformer protection on the utility model post.
In figure: 1, backup fuse, 2, three-phase magnetic keeps cut-off device, 3, high pressure winding, 4, yoke on iron core, 5, cut-off device oil float.
Embodiment
Distribution transformer on the post with built-in defencive function of the present utility model, the same with distribution transformer on existing post, also comprise yoke 4 on high pressure inlet wire, fuel tank, high pressure winding 3 and iron core.Its protection adopts the mode arranging high pressure backup fuse 1 and three-phase magnetic maintenance cut-off device 2 in fuel tank; as shown in Figure 1; backup fuse 1 keeps cut-off device 2 to be directly connected with the insulating sleeve of high pressure inlet wire and three-phase magnetic respectively, and three-phase magnetic keeps cut-off device 2 to be connected with high pressure winding 3 again.
Three-phase magnetic keeps cut-off device 2 to be arranged at the fuel tank medial surface of distribution transformer on post, and as shown in Figure 2, its position is higher than the top of yoke 4 on the iron core of distribution transformer on post.On iron core, yoke 4 top oil is oil temperature peak in fuel tank, oil temperature hottest point accurately can be delivered to three-phase magnetic and keep cut-off device 2.
As shown in Figure 3, three-phase magnetic keeps oil float 5 of cut-off device 2 to detect that transformer oil level is too low, by the locking of closing by hand function, avoids power transformer product to close a floodgate under low oil level state, improves the reliability that product puts into operation.
As shown in Figure 4, three-phase magnetic keeps the action of cut-off device 2 to be that single-phase induction and three-phase are threaded off, and avoids Transformer Phase-deficient Operation, reduces transformer fault rate, improve power supply reliability.
Three-phase magnetic keeps cut-off device 2 to have temperature and electric current dual factors sensitiveness; when overload or fault; big current flows through the transducer of cut-off device; the temperature of the metal material of transducer is caused to raise; when " loss of excitation " that reach transducer metal material is put, cut-off device 2 can be threaded off instantaneously, and is driven the moving contact separating brake be connected with transformer frequency response side by operating mechanism; smooth disconnection transformer frequency response, realizes high oil temperature defencive function.
When three-phase magnetic keeps the temperature of cut-off device 2 to put lower than " loss of excitation ", again can close, not need more exchange device, reusable.Available action handle keeps cut-off device 2 to carry out deciliter to three-phase magnetic, thus realizes the function of on-load switch.Three-phase magnetic keeps the operating grip of cut-off device 2 to have deciliter position instruction and reflecting at night design, can be used as isolating switch and uses.
According to the time-current chracteristic curve that Fig. 4 provides, illustrate that on the utility model post, distribution transformer achieves the two-part protection of overload and fault.

Claims (2)

1. distribution transformer on a post with built-in defencive function; comprise high pressure inlet wire, fuel tank and high pressure winding; it is characterized in that; backup fuse and three-phase magnetic maintenance cut-off device is provided with in fuel tank; backup fuse keeps cut-off device to be directly connected with the insulating sleeve of high pressure inlet wire and three-phase magnetic respectively, and three-phase magnetic keeps cut-off device and high pressure winding switching.
2. distribution transformer on the post with built-in defencive function according to claim 1, is characterized in that, described three-phase magnetic keeps cut-off device to be arranged at the medial surface of fuel tank, and its position is higher than the top of yoke on the iron core of distribution transformer on post.
CN201520815403.1U 2015-10-20 2015-10-20 Distribution transformer on post with built -in protect function Expired - Fee Related CN205050692U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201520815403.1U CN205050692U (en) 2015-10-20 2015-10-20 Distribution transformer on post with built -in protect function

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201520815403.1U CN205050692U (en) 2015-10-20 2015-10-20 Distribution transformer on post with built -in protect function

Publications (1)

Publication Number Publication Date
CN205050692U true CN205050692U (en) 2016-02-24

Family

ID=55344243

Family Applications (1)

Application Number Title Priority Date Filing Date
CN201520815403.1U Expired - Fee Related CN205050692U (en) 2015-10-20 2015-10-20 Distribution transformer on post with built -in protect function

Country Status (1)

Country Link
CN (1) CN205050692U (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105206400A (en) * 2015-10-20 2015-12-30 国网北京市电力公司电力科学研究院 On-pillar distribution transformer with internal protection function

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105206400A (en) * 2015-10-20 2015-12-30 国网北京市电力公司电力科学研究院 On-pillar distribution transformer with internal protection function

Similar Documents

Publication Publication Date Title
CN204680560U (en) One is electrically easy to adjusting type circuit breaker by automatic control type order of contact
CN106653294B (en) A kind of high pressure self-shield distribution transformer
CN205050692U (en) Distribution transformer on post with built -in protect function
CN101651294B (en) Integral control system of distribution transformer
CN105206400A (en) On-pillar distribution transformer with internal protection function
CN203192723U (en) Under-voltage trip gear for breaker
CN204497173U (en) A kind of low-voltage circuit breaker with protective circuit
CN204794028U (en) Intellectuality ac motor protector that is just reversing
CN204927092U (en) It is electric with even type circuit breaker of automatic control formula connect force
CN204314645U (en) A kind of low-voltage distribution system by screen break-make automaton
CN203707761U (en) 10kV distribution transformer neutral line breaking trip device
CN202384744U (en) Full-stop protection device for cooler of forced oil-air cooling power transformer
CN207283144U (en) A kind of double protection on-load switch fuse combined electric apparatus and circuit structure
CN202840673U (en) Double power switch control system
CN202678938U (en) Motor overload protection circuit for motor-driven oil well pump
CN201893293U (en) Arcless switching relay
CN203243020U (en) Three-phase imbalance circuit breaker
CN204270966U (en) A kind of circuit breaker
CN205428853U (en) Breaker open operation mechanism
CN203481125U (en) Outdoor vacuum circuit breaker
CN221080977U (en) Electrical control system based on dual power supply switching
CN208256595U (en) A kind of fugitive thermal circuit beraker
CN204130426U (en) Current transformer ratio switching device shifter in a kind of primary cut-out
CN203387169U (en) Vacuum circuit breaker type loop network cabinet
CN205319110U (en) Electric auxiliary device of circuit breaker

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

Granted publication date: 20160224

Termination date: 20201020

CF01 Termination of patent right due to non-payment of annual fee