CN207134783U - A kind of Novel box-type transformer overloads voltage-stabilizing protection device - Google Patents
A kind of Novel box-type transformer overloads voltage-stabilizing protection device Download PDFInfo
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- CN207134783U CN207134783U CN201721070398.1U CN201721070398U CN207134783U CN 207134783 U CN207134783 U CN 207134783U CN 201721070398 U CN201721070398 U CN 201721070398U CN 207134783 U CN207134783 U CN 207134783U
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Abstract
The utility model discloses a kind of Novel box-type transformer to overload voltage-stabilizing protection device, relates generally to transformer voltage-stabilizing protection apparatus field.Including transformer, transmitting loop is protected in NOL normal overload, user load, No.1 overload protection resistance, first overload protection transmitting loop, No. two overload protection resistance, second overload protection transmitting loop and circuit breaker control circuit, NOL normal overload protection transmitting loop includes No. zero vacuum circuit breaker, No. zero current sensor, first overload protection transmitting loop includes No.1 vacuum circuit breaker, No.1 current sensor, second overload protection transmitting loop includes No. two vacuum circuit breakers, No. two current sensors, circuit breaker control circuit includes power supply, controlling switch, hot-wire coil, iron staff, protective resistance.The beneficial effects of the utility model are：The present apparatus can automatic Regulation, reduce user's voltage, main line electric current reduces, and avoids the deficiency of the mode of artificial pressure regulation or tripping operation after alarm, avoids bringing loss to user.
Description
Technical field
Transformer voltage-stabilizing protection apparatus field is the utility model is related to, specifically a kind of Novel box-type transformer overload voltage stabilizing
Protection device.
Background technology
Box type transformer is (generally referred to as " case change ") to concentrate design to have volume in box-type shell traditional transformer
The characteristics of small, in light weight, low noise, low-loss, high reliability.Box type transformer not just transformer, it is equivalent to one
Small Substation, belong to power distribution station, directly provide a user power supply.Box type transformer is mainly used for city load center.Arrive
When summer load is heavier, or when circuit increase branch causes the circuit overcurrent phenomenon to be present, current box type transformer does not have
There is configuration automatic pressure regulating device, overload protection is also only carried out by the mode of artificial pressure regulation or tripping operation after alarm.
Box type transformer is depressurized by the way of artificial pressure regulation after alarm, so that when being depressurized to user's voltage, case
The administrative staff of formula transformer are longer apart from box type transformer distance, it is impossible to timely box type transformer is manually dropped
Pressure.
Carried out by the way of tripping operation to the cut-out of the power supply circuit of box type transformer, box type transformer was carried out with this
When carrying protection, very big loss can be brought to user during tripping operation.
Utility model content
The purpose of this utility model is to provide a kind of Novel box-type transformer overload voltage-stabilizing protection device, with box-type transformation
The main line electric current of device connection is when being larger than rated current, box type transformer can automatic Regulation, reduce user's voltage, with case
The main line electric current of formula transformer connection reduces, and main line electric current is less than load current value, avoids using artificial pressure regulation after alarm
Or the mode of tripping operation carries out deficiency caused by pressure regulation, avoids bringing loss to user.
The utility model to achieve the above object, is achieved through the following technical solutions：
A kind of Novel box-type transformer overloads voltage-stabilizing protection device, including transformer, NOL normal overload protection transmitting loop, use
Family load, No.1 overload protection resistance, the first overload protection transmitting loop, No. two overload protection resistance, the second overload protection are defeated
Electrical circuit and circuit breaker control circuit, the transformer, NOL normal overload protection transmitting loop, user load series connection are described normal
Overload protection transmitting loop includes No. zero vacuum circuit breaker, No. zero current sensor, the first overload protection transmitting loop bag
Include No.1 vacuum circuit breaker, No.1 current sensor, the No.1 overload protection resistance and the first overload protection transmitting loop string
Connection forms one-level overload protecting circuit, and the one-level overload protecting circuit and NOL normal overload protect transmitting loop in parallel, and described the
Two overload protection transmitting loops include No. two vacuum circuit breakers, No. two current sensors, No. two overload protection resistance and the
Two overload protection transmitting loops two level overload protecting circuit in series, the two level overload protecting circuit and the first overload protection
Transmitting loop is in parallel, the circuit breaker control circuit include No. zero circuit breaker control circuit, No.1 circuit breaker control circuit, No. two
Circuit breaker control circuit, No. zero circuit breaker control circuit, No.1 circuit breaker control circuit, No. two circuit breaker control circuits point
No. zero vacuum circuit breaker, No.1 vacuum circuit breaker, No. two vacuum circuit breakers, the circuit breaker control circuit bag Dui Ying not controlled
Include power supply, controlling switch, hot-wire coil, iron staff, protective resistance, the power supply, controlling switch, hot-wire coil, guarantor
Resistant series are protected, the iron staff is arranged in hot-wire coil, and the controlling switch includes No. zero controlling switch, No.1 control is opened
Close, No. two controlling switches, No. zero controlling switch, No.1 controlling switch, No. two controlling switches are separately positioned on No. zero open circuit
Device control circuit, No.1 circuit breaker control circuit, in No. two circuit breaker control circuits, No. zero current sensor passes through data
Line is connected with No. zero controlling switch, No.1 controlling switch respectively, the No.1 current sensor by data wire respectively with No.1
Controlling switch, No. two controlling switch connections.
No. two current sensors are connected by data wire with No. two controlling switches.
Also include No. three overload protection resistance, the 3rd overload protection transmitting loop, the 3rd overload protection transmitting loop
Including No. three vacuum circuit breakers, No. three current sensors, No. three overload protection resistance and the 3rd overload protection transmitting loop
Three-level overload protecting circuit in series, the three-level overload protecting circuit is in parallel with the second overload protection transmitting loop, described
Circuit breaker control circuit also includes No. three circuit breaker control circuits, and No. three circuit breaker control circuits are opened provided with No. three controls
Close, No. two current sensors are connected with No. two controlling switches, No. three controlling switches respectively by data wire, No. three electricity
Flow sensor is connected by data wire with No. three controlling switches.
No. zero vacuum circuit breaker, No.1 vacuum circuit breaker, No. two vacuum circuit breakers, it is all provided with No. three vacuum circuit breakers
There is the conducting rod being connected with wire, the conducting rod side is provided with iron plate, and the iron plate is corresponding with iron staff one end.
Prior art is contrasted, the beneficial effects of the utility model are：
1st, during normal power supply, transformer, NOL normal overload protection transmitting loop, user load form current supply circuit, work as power supply
When main line electric current in loop is larger than rated current, No. zero current sensor detects that main line electric current exceedes rated current,
No. zero current sensor controls No. zero controlling switch and No.1 controlling switch by data wire respectively, closes No. zero controlling switch
Close, No. zero circuit breaker control circuit formation path, the iron staff in No. zero circuit breaker control circuit has magnetic, and No. zero vacuum is broken
Under iron plate on the device bottom conductive bar of road is inhaled, make the moving contact in No. zero vacuum circuit breaker and static contact separation, so that normally
The open circuit of overload protection transmitting loop；At the same time, No.1 controlling switch disconnects, and No.1 circuit breaker control circuit forms open circuit, and one
Iron staff in number circuit breaker control circuit no longer has magnetic, in No.1 vacuum circuit breaker on No.1 vacuum circuit breaker bottom conductive bar
Rise in the presence of device internal reset spring, make the moving contact in No.1 vacuum circuit breaker and static contact contact, so that first
Overload protection transmitting loop is connected, and forms transformer, No.1 overload protection resistance, No.1 vacuum circuit breaker, No.1 current sense
The loop that device, user load are connected, No.1 overload protection resistance can carry out partial pressure to the voltage of transformer, make user load
User's voltage decline, so as to reach decompression purpose, because No.1 overload protection resistant series access circuit, make in circuit total electricity
Resistance increase, in the case that transformer total voltage is constant, the main line electric current in circuit can just reduce, and main line electric current is less than specified electricity
Flow valuve, so as to reach the purpose that user's voltage declines, main line electric current reduces, realize the purpose of overload protection.Similarly, transformation is worked as
The loop current that device, No.1 overload protection resistance, No.1 vacuum circuit breaker, No.1 current sensor, user load are connected
During more than rated current, No.1 current sensor controls No.1 controlling switch and No. two controlling switches by data wire respectively, makes
No.1 controlling switch closes, and No.1 circuit breaker control circuit forms path, makes the moving contact and stationary contact in No.1 vacuum circuit breaker
Head separation, so that the first overload protection transmitting loop is breaking；At the same time, No. two controlling switches disconnect, No. two breaker controls
Circuit processed forms open circuit, makes the moving contact in No. two vacuum circuit breakers and static contact contact, so that the second overload protection is transmitted electricity
Loop is connected, and forms transformer, No.1 overload protection resistance, No. two overload protection resistance, No. two vacuum circuit breakers, No. two electric currents
The loop that sensor, user load are connected, No.1 overload protection resistance, No. two overload protection resistance can be to transformers
Voltage carries out partial pressure, declines user's voltage of user load, so as to reach decompression purpose, due to No. two overload protection resistance
Series connection access circuit, increases all-in resistance in circuit, in the case that transformer total voltage is constant, the main line electric current in circuit is with regard to energy
Reduce, main line electric current is less than load current value, so as to reach the purpose that user's voltage declines, main line electric current reduces, realized
Carry the purpose of protection.
Therefore, using this method, when main line electric current exceedes rated current, box type transformer can automatic Regulation, make user
Voltage reduces, and main line electric current is less than load current value, avoids and is carried out by the way of artificial pressure regulation or tripping operation after alarm
It is insufficient caused by pressure regulation, avoid bringing loss to user.
2nd, No. two current sensors are connected by data wire with No. two controlling switches, when transformer, No.1 overload protection electricity
The loop that resistance, No. two overload protection resistance, No. two vacuum circuit breakers, No. two current sensors, user loads are connected is more than volume
When determining electric current, No. two current sensors make No. two controlling switch closures, No. two open circuits by No. two controlling switches of data line traffic control
Device control circuit forms path, makes the moving contact in No. two vacuum circuit breakers and static contact separation, so that the second overload protection
Transmitting loop open circuit, that is, whole circuit breaker, reach the purpose of " tripping operation ", for carrying out overload protection.
3rd, by setting No. three overload protection resistance, the 3rd overload protection transmitting loop, No. three circuit breaker control circuits, when
Transformer, No.1 overload protection resistance, No. two overload protection resistance, No. two vacuum circuit breakers, No. two current sensors, users bear
When the connected loop of load is more than rated current, No. two current sensors control No. two controlling switches and three by data wire respectively
Number controlling switch, makes No. two controlling switches closures, and No. two circuit breaker control circuits form paths, made in No. two vacuum circuit breakers
Moving contact and static contact separation, so that the second overload protection transmitting loop is breaking；At the same time, No. three controlling switches disconnect,
No. three circuit breaker control circuits form open circuit, make the moving contact in No. three vacuum circuit breakers and static contact contact, so that the 3rd
Overload protection transmitting loop is connected, and is formed transformer, No.1 overload protection resistance, No. two overload protection resistance, No. three overloads and is protected
The loop that shield resistance, No. three vacuum circuit breakers, No. three current sensors, user loads are connected, No.1 overload protection resistance, two
Number overload protection resistance, No. three overload protection resistance can carry out partial pressure to the voltage of transformer, make the user of user load
Voltage declines, and so as to reach decompression purpose, is also connected due to No. three overload protection resistance and accesses circuit, increases all-in resistance in circuit
Greatly, in the case that transformer total voltage is constant, the main line electric current in circuit can just reduce, and main line electric current is less than rated current
Value, so as to reach the purpose that user's voltage declines, main line electric current reduces, realize the purpose of overload protection.In addition, pass through No. three electricity
Flow sensor is connected by data wire with No. three controlling switches, when transformer, No.1 overload protection resistance, No. two overload protection electricity
The loop that resistance, No. three overload protection resistance, No. three vacuum circuit breakers, No. three current sensors, user loads are connected is more than volume
When determining electric current, No. three current sensors make No. three controlling switch closures, No. three open circuits by No. three controlling switches of data line traffic control
Device control circuit forms path, makes the moving contact in No. three vacuum circuit breakers and static contact separation, so that the 3rd overload protection
Transmitting loop open circuit, that is, whole circuit breaker, reach the purpose of " tripping operation ", for carrying out overload protection.
4th, No. zero vacuum circuit breaker, No.1 vacuum circuit breaker, No. two vacuum circuit breakers, No. three vacuum circuit breaker constructions principles
All same, No. zero circuit breaker control circuit, No.1 circuit breaker control circuit, No. two circuit breaker control circuits, No. three breaker controls
Circuit structure principle all same processed, No. zero circuit breaker control circuit, No.1 circuit breaker control circuit, No. two breaker control electricity
Road, No. three circuit breaker control circuits are respectively by controlling No. zero vacuum circuit breaker, No.1 vacuum circuit breaker, No. two vacuum circuit breakers
Iron plate on device, No. three vacuum circuit breakers on conducting rod, the magnetic force brought by hot-wire coil to iron staff, so as to which iron plate be inhaled
Under, come control respectively No. zero vacuum circuit breaker, No.1 vacuum circuit breaker, No. two vacuum circuit breakers, No. three vacuum circuit breakers it is disconnected
Open.
Brief description of the drawings
Accompanying drawing 1 is the structure principle chart of the utility model embodiment 1.
Accompanying drawing 2 is circuit breaker control circuit control principle structural representation in the utility model.
Accompanying drawing 3 is the structure principle chart of the utility model embodiment 2.
Label shown in accompanying drawing：
1st, transformer；2nd, user load；3rd, No.1 overload protection resistance；4th, No. two overload protection resistance；5th, breaker control
Circuit processed；6th, No. zero vacuum circuit breaker；7th, No. zero current sensor；8th, No.1 vacuum circuit breaker；9th, No.1 current sensor；
10th, No. two vacuum circuit breakers；11st, No. two current sensors；12nd, power supply；13rd, controlling switch；14th, hot-wire coil；15th, iron
Rod；16th, protective resistance；17th, No. three overload protection resistance；18th, No. three vacuum circuit breakers；19th, No. three current sensors；20th, lead
Electric pole；21st, iron plate；22nd, moving contact；23rd, static contact；24th, back-moving spring.
Embodiment
With reference to specific embodiment, the utility model is expanded on further.It should be understood that these embodiments are merely to illustrate this
Utility model rather than limitation the scope of the utility model.In addition, it is to be understood that reading the content of the utility model instruction
Afterwards, those skilled in the art can make various changes or modifications to the utility model, and these equivalent form of values equally fall within this Shen
Please limited range.
Described in the utility model is a kind of Novel box-type transformer overload voltage-stabilizing protection device, and agent structure includes transformer
1st, NOL normal overload protection transmitting loop, user load 2, No.1 overload protection resistance 3, the first overload protection transmitting loop, No. two
Overload protection resistance 4, the second overload protection transmitting loop and circuit breaker control circuit 5, the transformer 1, NOL normal overload protection
Transmitting loop, user load 2 are connected, during box type transformer normal work, transformer 1, NOL normal overload protection transmitting loop, user
The series connection of load 2.NOL normal overload protection transmitting loop includes 6, No. zero current sensors 7 of No. zero vacuum circuit breaker, and described the
One overload protection transmitting loop include No.1 vacuum circuit breaker 8, No.1 current sensor 9, the No.1 overload protection resistance 3 with
First overload protection transmitting loop one-level overload protecting circuit in series, the one-level overload protecting circuit are protected with NOL normal overload
It is in parallel to protect transmitting loop, the second overload protection transmitting loop includes 10, No. two current sensors 11 of No. two vacuum circuit breakers,
The overload protection transmitting loop of No. two overload protection resistance 4 and second two level overload protecting circuit in series, the two level
Overload protecting circuit is in parallel with the first overload protection transmitting loop, and the circuit breaker control circuit 5 includes No. zero breaker control
Circuit, No.1 circuit breaker control circuit, No. two circuit breaker control circuits, No. zero circuit breaker control circuit, No.1 breaker
Control circuit, No. two circuit breaker control circuits correspond to control No. zero vacuum circuit breaker 6, No.1 vacuum circuit breaker No. 8, two numbers respectively
Vacuum circuit breaker 10, the circuit breaker control circuit 5 include power supply 12, controlling switch 13, hot-wire coil 14, iron staff 15,
Protective resistance 16, the power supply 12, controlling switch 13, hot-wire coil 14, protective resistance 16 are connected, and the iron staff 15 is set
In hot-wire coil 14, the controlling switch 13 includes No. zero controlling switch, No.1 controlling switch, No. two controlling switches, described
No. zero controlling switch, No.1 controlling switch, No. two controlling switches are separately positioned on No. zero circuit breaker control circuit, No.1 breaker
In control circuit, No. two circuit breaker control circuits, No. zero current sensor 7 is opened with No. zero control respectively by data wire
Close, the connection of No.1 controlling switch, the No.1 current sensor 9 is controlled with No.1 controlling switch, No. two respectively by data wire
Switch connection.
When transformer 1,10, No. two electricity of vacuum circuit breaker of overload protection resistance 4, two of No.1 overload protection resistance 3, two
When the loop that flow sensor 11, user load 2 are connected is more than rated current, in order that whole circuit reaches the mesh of " tripping operation "
, so as to carry out overload protection.No. two current sensors 11 are connected by data wire with No. two controlling switches.
Also include No. three overload protection resistance 17, the 3rd overload protection transmitting loop, the 3rd overload protection is transmitted electricity back
Road includes 18, No. three current sensors 19 of No. three vacuum circuit breakers, the overload protection of No. three overload protection resistance 17 and the 3rd
Transmitting loop three-level overload protecting circuit in series, the three-level overload protecting circuit and the second overload protection transmitting loop are simultaneously
Connection, the circuit breaker control circuit 5 also include No. three circuit breaker control circuits, and No. three circuit breaker control circuits are provided with No. three
Controlling switch, No. two current sensors 11 are connected with No. two controlling switches, No. three controlling switches respectively by data wire, institute
No. three current sensors 19 are stated to be connected with No. three controlling switches by data wire.
No. zero vacuum circuit breaker 6, the vacuum circuit breaker 18 of vacuum circuit breaker 10, three of No.1 vacuum circuit breaker 8, two
On be equipped with the conducting rod 20 being connected with wire, the side of conducting rod 20 is provided with iron plate 21, the iron plate 21 and iron staff 15 1
Hold corresponding.No. zero circuit breaker control circuit, No.1 circuit breaker control circuit, No. two circuit breaker control circuits, No. three breakers
Control circuit is respectively by controlling No. zero vacuum circuit breaker 6, the vacuum of vacuum circuit breaker 10, three of No.1 vacuum circuit breaker 8, two
Iron plate 21 on breaker 18 on conducting rod 20, the magnetic force brought by hot-wire coil 14 to iron staff 15, so as to which iron plate 21 be inhaled
Under, to control No. zero vacuum circuit breaker 6, the vacuum circuit breaker of vacuum circuit breaker 10, three of No.1 vacuum circuit breaker 8, two respectively
18 disconnection.
In the present apparatus, No. zero vacuum circuit breaker 6, the vacuum of vacuum circuit breaker 10, three of No.1 vacuum circuit breaker 8, two are broken
The structural principle all same of road device 18, No. zero circuit breaker control circuit, No.1 circuit breaker control circuit, No. two breaker control electricity
Road, No. three circuit breaker control circuit structural principle all sames.
Embodiment 1：
Described in the utility model is a kind of Novel box-type transformer overload voltage-stabilizing protection device, and agent structure includes transformer
1st, NOL normal overload protection transmitting loop, user load 2, No.1 overload protection resistance 3, the first overload protection transmitting loop, No. two
Overload protection resistance 4, the second overload protection transmitting loop and circuit breaker control circuit 5, the transformer 1, NOL normal overload protection
Transmitting loop, user load 2 are connected, during box type transformer normal work, transformer 1, NOL normal overload protection transmitting loop, user
The series connection of load 2.NOL normal overload protection transmitting loop includes 6, No. zero current sensors 7 of No. zero vacuum circuit breaker, and described the
One overload protection transmitting loop include No.1 vacuum circuit breaker 8, No.1 current sensor 9, the No.1 overload protection resistance 3 with
First overload protection transmitting loop one-level overload protecting circuit in series, the one-level overload protecting circuit are protected with NOL normal overload
It is in parallel to protect transmitting loop, the second overload protection transmitting loop includes 10, No. two current sensors 11 of No. two vacuum circuit breakers,
The overload protection transmitting loop of No. two overload protection resistance 4 and second two level overload protecting circuit in series, the two level
Overload protecting circuit is in parallel with the first overload protection transmitting loop, and the circuit breaker control circuit 5 includes No. zero breaker control
Circuit, No.1 circuit breaker control circuit, No. two circuit breaker control circuits, No. zero circuit breaker control circuit, No.1 breaker
Control circuit, No. two circuit breaker control circuits correspond to control No. zero vacuum circuit breaker 6, No.1 vacuum circuit breaker No. 8, two numbers respectively
Vacuum circuit breaker 10, the circuit breaker control circuit 5 include power supply 12, controlling switch 13, hot-wire coil 14, iron staff 15,
Protective resistance 16, the power supply 12, controlling switch 13, hot-wire coil 14, protective resistance 16 are connected, and the iron staff 15 is set
In hot-wire coil 14, the controlling switch 13 includes No. zero controlling switch, No.1 controlling switch, No. two controlling switches, described
No. zero controlling switch, No.1 controlling switch, No. two controlling switches are separately positioned on No. zero circuit breaker control circuit, No.1 breaker
In control circuit, No. two circuit breaker control circuits, No. zero current sensor 7 is opened with No. zero control respectively by data wire
Close, the connection of No.1 controlling switch, the No.1 current sensor 9 is controlled with No.1 controlling switch, No. two respectively by data wire
Switch connection.No. two current sensors 11 are connected by data wire with No. two controlling switches.No. zero vacuum circuit breaker
6th, the conducting rod 20 being connected with wire, the conducting rod 20 1 are equipped with 8, No. two vacuum circuit breakers 10 of No.1 vacuum circuit breaker
Side is provided with iron plate 21, and the iron plate 21 is corresponding with the one end of iron staff 15.
Application method and principle：
Current sensor, it is a kind of detection means, the information of tested electric current can be experienced, and can will detect the letter experienced
Breath, the electric signal for meeting certain standard needs or the information output of other required forms is for conversion into according to certain rules, to meet
The requirement such as transmission, processing, storage, display, record and control of information.
During normal power supply, transformer 1, NOL normal overload protection transmitting loop, user load 2 form current supply circuit, work as power supply
When main line electric current in loop is larger than rated current, No. zero current sensor 7 detects that main line electric current exceedes rated current,
No. zero current sensor 7 controls No. zero controlling switch and No.1 controlling switch by data wire respectively, closes No. zero controlling switch
Close, No. zero circuit breaker control circuit formation path, the iron staff 15 in No. zero circuit breaker control circuit has magnetic, by No. zero vacuum
Under iron plate 21 on the bottom conductive bar 20 of breaker 6 is inhaled, divide the moving contact 22 in No. zero vacuum circuit breaker 6 and static contact 23
From so that NOL normal overload protection transmitting loop open circuit；At the same time, No.1 controlling switch disconnects, No.1 breaker control electricity
Road forms open circuit, and the iron staff 15 in No.1 circuit breaker control circuit no longer has magnetic, the bottom conductive bar of No.1 vacuum circuit breaker 8
Rise on 20 in the presence of the internal reset spring 24 of No.1 vacuum circuit breaker 8, make the moving contact 22 in No.1 vacuum circuit breaker 8
Contacted with static contact 23 so that the first overload protection transmitting loop connect, form transformer 1, No.1 overload protection resistance 3,
The loop that No.1 vacuum circuit breaker 8, No.1 current sensor 9, user load 2 are connected, No.1 overload protection resistance 3 can be right
The voltage of transformer 1 carries out partial pressure, declines user's voltage of user load 2, so as to reach decompression purpose, because No.1 is overloaded
The series connection access circuit of protective resistance 3, increases all-in resistance in circuit, dry in circuit in the case that the total voltage of transformer 1 is constant
Road electric current can just reduce, and main line electric current is less than load current value, so as to reach the mesh that user's voltage declines, main line electric current reduces
, realize the purpose of overload protection.Similarly, when transformer 1, No.1 overload protection resistance 3, No.1 vacuum circuit breaker 8, No.1 electricity
When the loop current that flow sensor 9, user load 2 are connected is also greater than rated current, No.1 current sensor 9 passes through data wire
No.1 controlling switch and No. two controlling switches are controlled respectively, close No.1 controlling switch, and No.1 circuit breaker control circuit is formed
Path, separate the moving contact 22 in No.1 vacuum circuit breaker 8 and static contact 23, so that the first overload protection transmitting loop breaks
Road；At the same time, No. two controlling switches disconnect, and No. two circuit breaker control circuits form open circuit, made in No. two vacuum circuit breakers 10
Moving contact 22 and static contact 23 contact so that the second overload protection transmitting loop connect, form transformer 1, No.1 overload
Protective resistance 3, two overload protection resistance 4, two vacuum circuit breaker 10, No. two current sensors 11, user loads 2 are connected
Loop, 3, No. two overload protection resistance 4 of No.1 overload protection resistance can carry out partial pressure to the voltage of transformer 1, use
User's voltage of family load 2 declines, and so as to reach decompression purpose, is also connected due to No. two overload protection resistance 4 and accesses circuit, made
All-in resistance increases in circuit, and in the case that the total voltage of transformer 1 is constant, the main line electric current in circuit can just reduce, and make main line electric
Stream is less than load current value, so as to reach the purpose that user's voltage declines, main line electric current reduces, realizes the purpose of overload protection.
No. two current sensors 11 are connected by data wire with No. two controlling switches, when transformer 1, No.1 overload protection electricity
The loop that resistance 3, No. two overload protection resistance 4, two vacuum circuit breaker 10, two current sensor 11, user loads 2 are connected
During more than rated current, No. two current sensors 11 make No. two controlling switches closures by No. two controlling switches of data line traffic control,
No. two circuit breaker control circuits form path, separate the moving contact 22 in No. two vacuum circuit breakers 10 and static contact 23, so as to
Make the open circuit of the second overload protection transmitting loop, that is, whole circuit breaker, reach the purpose of " tripping operation ", for carrying out overload guarantor
Shield.
Therefore, using this method, when main line electric current exceedes rated current, box type transformer can automatic Regulation, make user
Voltage reduces, and main line electric current is less than load current value, avoids and is carried out by the way of artificial pressure regulation or tripping operation after alarm
It is insufficient caused by pressure regulation, avoid bringing loss to user.
Embodiment 2：
Described in the utility model is a kind of Novel box-type transformer overload voltage-stabilizing protection device, and agent structure includes transformer
1st, NOL normal overload protection transmitting loop, user load 2, No.1 overload protection resistance 3, the first overload protection transmitting loop, No. two
Overload protection resistance 4, the second overload protection transmitting loop and circuit breaker control circuit 5, the transformer 1, NOL normal overload protection
Transmitting loop, user load 2 are connected, during box type transformer normal work, transformer 1, NOL normal overload protection transmitting loop, user
The series connection of load 2.NOL normal overload protection transmitting loop includes 6, No. zero current sensors 7 of No. zero vacuum circuit breaker, and described the
One overload protection transmitting loop include No.1 vacuum circuit breaker 8, No.1 current sensor 9, the No.1 overload protection resistance 3 with
First overload protection transmitting loop one-level overload protecting circuit in series, the one-level overload protecting circuit are protected with NOL normal overload
It is in parallel to protect transmitting loop, the second overload protection transmitting loop includes 10, No. two current sensors 11 of No. two vacuum circuit breakers,
The overload protection transmitting loop of No. two overload protection resistance 4 and second two level overload protecting circuit in series, the two level
Overload protecting circuit is in parallel with the first overload protection transmitting loop, and the circuit breaker control circuit 5 includes No. zero breaker control
Circuit, No.1 circuit breaker control circuit, No. two circuit breaker control circuits, No. zero circuit breaker control circuit, No.1 breaker
Control circuit, No. two circuit breaker control circuits correspond to control No. zero vacuum circuit breaker 6, No.1 vacuum circuit breaker No. 8, two numbers respectively
Vacuum circuit breaker 10, the circuit breaker control circuit 5 include power supply 12, controlling switch 13, hot-wire coil 14, iron staff 15,
Protective resistance 16, the power supply 12, controlling switch 13, hot-wire coil 14, protective resistance 16 are connected, and the iron staff 15 is set
In hot-wire coil 14, the controlling switch 13 includes No. zero controlling switch, No.1 controlling switch, No. two controlling switches, described
No. zero controlling switch, No.1 controlling switch, No. two controlling switches are separately positioned on No. zero circuit breaker control circuit, No.1 breaker
In control circuit, No. two circuit breaker control circuits, No. zero current sensor 7 is opened with No. zero control respectively by data wire
Close, the connection of No.1 controlling switch, the No.1 current sensor 9 is controlled with No.1 controlling switch, No. two respectively by data wire
Switch connection.Also include No. three overload protection resistance 17, the 3rd overload protection transmitting loop, the 3rd overload protection is transmitted electricity back
Road includes 18, No. three current sensors 19 of No. three vacuum circuit breakers, the overload protection of No. three overload protection resistance 17 and the 3rd
Transmitting loop three-level overload protecting circuit in series, the three-level overload protecting circuit and the second overload protection transmitting loop are simultaneously
Connection, the circuit breaker control circuit 5 also include No. three circuit breaker control circuits, and No. three circuit breaker control circuits are provided with No. three
Controlling switch, No. two current sensors 11 are connected with No. two controlling switches, No. three controlling switches respectively by data wire, institute
No. three current sensors 19 are stated to be connected with No. three controlling switches by data wire.No. zero vacuum circuit breaker 6, No.1 vacuum are broken
The conducting rod 20 being connected with wire, the conduction are equipped with the vacuum circuit breaker 18 of vacuum circuit breaker 10, three of road device 8, two
The side of bar 20 is provided with iron plate 21, and the iron plate 21 is corresponding with the one end of iron staff 15.
Application method and principle：
In the present embodiment 2, NOL normal overload protection transmitting loop, the first overload protection transmitting loop, the second overload protection are defeated
The use principle of electrical circuit is identical with the application method of embodiment 1.No. three overload protection resistance 17, are additionally arranged in the present embodiment
Three overload protection transmitting loops, No. three circuit breaker control circuits, when 3, No. two transformer 1, No.1 overload protection resistance overloads are protected
The loop that shield resistance 4, two vacuum circuit breaker 10, two current sensor 11, user load 2 are connected is more than rated current
When, No. two current sensors 11 control No. two controlling switches and No. three controlling switches by data wire respectively, open No. two controls
Close and close, No. two circuit breaker control circuits form path, divide the moving contact 22 in No. two vacuum circuit breakers 10 and static contact 23
From so that the second overload protection transmitting loop is breaking；At the same time, No. three controlling switches disconnect, No. three breaker control electricity
Road forms open circuit, contacts the moving contact 22 in No. three vacuum circuit breakers 18 and static contact 23, so that the 3rd overload protection is defeated
Electrical circuit is connected, and forms transformer 1, the overload protection resistance of overload protection resistance 4, three of No.1 overload protection resistance 3, two
17th, the loop that 18, No. three current sensors 19, user loads 2 of No. three vacuum circuit breakers are connected, No.1 overload protection resistance 3,
4, No. three overload protection resistance 17 of No. two overload protection resistance can carry out partial pressure to the voltage of transformer 1, make user load 2
User's voltage decline, so as to reach decompression purpose, due to No. three overload protection resistance 17 also connect access circuit, make in circuit
All-in resistance increases, and in the case that the total voltage of transformer 1 is constant, the main line electric current in circuit can just reduce, and be less than main line electric current
Load current value, so as to reach the purpose that user's voltage declines, main line electric current reduces, realize the purpose of overload protection.It is in addition, logical
Cross No. three current sensors 19 to be connected with No. three controlling switches by data wire, when transformer 1, No.1 overload protection resistance 3, two
Number overload protection resistance 4, three overload protection resistance 17, three vacuum circuit breaker 18, No. three current sensors 19, user loads
When 2 loops connected are more than rated current, No. three current sensors 19 make No. three by No. three controlling switches of data line traffic control
Controlling switch closes, and No. three circuit breaker control circuits form path, make moving contact 22 and the stationary contact in No. three vacuum circuit breakers 18
First 23 separation, so that the 3rd overload protection transmitting loop is breaking, that is, whole circuit breaker, reach the purpose of " tripping operation ",
For carrying out overload protection.
Claims (4)
1. a kind of Novel box-type transformer overloads voltage-stabilizing protection device, it is characterised in that：Protected including transformer (1), NOL normal overload
Protect transmitting loop, user load (2), No.1 overload protection resistance (3), the first overload protection transmitting loop, No. two overload protections
Resistance (4), the second overload protection transmitting loop and circuit breaker control circuit (5), the transformer (1), NOL normal overload protection are defeated
Electrical circuit, user load (2) series connection, the NOL normal overload protection transmitting loop include No. zero vacuum circuit breaker (6), No. zero electric current
Sensor (7), the first overload protection transmitting loop include No.1 vacuum circuit breaker (8), No.1 current sensor (9), institute
State No.1 overload protection resistance (3) and the first overload protection transmitting loop one-level overload protecting circuit in series, the one-level
Overload protecting circuit is in parallel with NOL normal overload protection transmitting loop, and the second overload protection transmitting loop breaks including No. two vacuum
Road device (10), No. two current sensors (11), No. two overload protection resistance (4) are connected with the second overload protection transmitting loop
Two level overload protecting circuit is formed, the two level overload protecting circuit is in parallel with the first overload protection transmitting loop, the open circuit
Device control circuit (5) includes No. zero circuit breaker control circuit, No.1 circuit breaker control circuit, No. two circuit breaker control circuits, institute
State No. zero circuit breaker control circuit, No.1 circuit breaker control circuit, No. two circuit breaker control circuits respectively correspond to control No. zero
Vacuum circuit breaker (6), No.1 vacuum circuit breaker (8), No. two vacuum circuit breakers (10), the circuit breaker control circuit (5) include
Power supply (12), controlling switch (13), hot-wire coil (14), iron staff (15), protective resistance (16), the power supply
(12), controlling switch (13), hot-wire coil (14), protective resistance (16) series connection, the iron staff (15) are arranged on hot-wire coil
(14) in, the controlling switch (13) includes No. zero controlling switch, No.1 controlling switch, No. two controlling switches, No. zero control
System switch, No.1 controlling switch, No. two controlling switches are separately positioned on No. zero circuit breaker control circuit, No.1 breaker control electricity
In road, No. two circuit breaker control circuits, No. zero current sensor (7) by data wire respectively with No. zero controlling switch, one
The connection of number controlling switch, the No.1 current sensor (9) by data wire respectively with No.1 controlling switch, No. two controlling switches
Connection.
A kind of 2. Novel box-type transformer overload voltage-stabilizing protection device according to claim 1, it is characterised in that：Described No. two
Current sensor (11) is connected by data wire with No. two controlling switches.
A kind of 3. Novel box-type transformer overload voltage-stabilizing protection device according to claim 1, it is characterised in that：Also include three
Number overload protection resistance (17), the 3rd overload protection transmitting loop, the 3rd overload protection transmitting loop include No. three vacuum
Breaker (18), No. three current sensors (19), No. three overload protection resistance (17) and the 3rd overload protection transmitting loop
Three-level overload protecting circuit in series, the three-level overload protecting circuit is in parallel with the second overload protection transmitting loop, described
Circuit breaker control circuit (5) also includes No. three circuit breaker control circuits, and No. three circuit breaker control circuits are provided with No. three controls
Switch, No. two current sensors (11) are connected with No. two controlling switches, No. three controlling switches respectively by data wire, described
No. three current sensors (19) are connected by data wire with No. three controlling switches.
A kind of 4. Novel box-type transformer overload voltage-stabilizing protection device according to claim 3, it is characterised in that：Described No. zero
Vacuum circuit breaker (6), No.1 vacuum circuit breaker (8), No. two vacuum circuit breakers (10), it is equipped with No. three vacuum circuit breakers (18)
The conducting rod (20) being connected with wire, conducting rod (20) side are provided with iron plate (21), the iron plate (21) and iron staff (15)
One end is corresponding.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721070398.1U CN207134783U (en) | 2017-08-24 | 2017-08-24 | A kind of Novel box-type transformer overloads voltage-stabilizing protection device |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721070398.1U CN207134783U (en) | 2017-08-24 | 2017-08-24 | A kind of Novel box-type transformer overloads voltage-stabilizing protection device |
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| Publication Number | Publication Date |
|---|---|
| CN207134783U true CN207134783U (en) | 2018-03-23 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110246392A (en) * | 2019-07-04 | 2019-09-17 | 铜仁职业技术学院 | A kind of vocational education practice teaching checking device |
-
2017
- 2017-08-24 CN CN201721070398.1U patent/CN207134783U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110246392A (en) * | 2019-07-04 | 2019-09-17 | 铜仁职业技术学院 | A kind of vocational education practice teaching checking device |
| CN110246392B (en) * | 2019-07-04 | 2021-03-23 | 铜仁职业技术学院 | Vocational education teaching training examination device |
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| CP03 | Change of name, title or address |
Address after: 325000 Xiangyang Industrial Zone, Liushi Town, Yueqing, Wenzhou, Zhejiang (Hongbao electric group Limited by Share Ltd) Patentee after: Faraday Electric Co., Ltd Address before: 325000 Zhejiang city of Wenzhou province Yueqing city Liushi Town Su ao Village Patentee before: ZHEJIANG FARADY ELECTRIC Co.,Ltd. |
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| CP03 | Change of name, title or address |