CN205945211U - Overhaul base and air switch - Google Patents
Overhaul base and air switch Download PDFInfo
- Publication number
- CN205945211U CN205945211U CN201620727549.5U CN201620727549U CN205945211U CN 205945211 U CN205945211 U CN 205945211U CN 201620727549 U CN201620727549 U CN 201620727549U CN 205945211 U CN205945211 U CN 205945211U
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- Prior art keywords
- circuit
- switch
- air switch
- backup
- circuit breaker
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- 238000012423 maintenance Methods 0.000 claims abstract description 77
- 230000005611 electricity Effects 0.000 claims abstract description 12
- NJPPVKZQTLUDBO-UHFFFAOYSA-N novaluron Chemical compound C1=C(Cl)C(OC(F)(F)C(OC(F)(F)F)F)=CC=C1NC(=O)NC(=O)C1=C(F)C=CC=C1F NJPPVKZQTLUDBO-UHFFFAOYSA-N 0.000 claims description 75
- 229910052571 earthenware Inorganic materials 0.000 claims description 7
- 239000000155 melt Substances 0.000 claims 1
- 238000000034 method Methods 0.000 abstract description 15
- 230000008569 process Effects 0.000 abstract description 12
- 230000008859 change Effects 0.000 abstract description 11
- 239000004020 conductor Substances 0.000 description 5
- 238000013461 design Methods 0.000 description 4
- 238000006243 chemical reaction Methods 0.000 description 3
- 238000002955 isolation Methods 0.000 description 3
- 229910000831 Steel Inorganic materials 0.000 description 2
- 208000027418 Wounds and injury Diseases 0.000 description 2
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- 238000010586 diagram Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 208000014674 injury Diseases 0.000 description 2
- 238000012544 monitoring process Methods 0.000 description 2
- 238000004826 seaming Methods 0.000 description 2
- 239000010959 steel Substances 0.000 description 2
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 1
- 230000005856 abnormality Effects 0.000 description 1
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- 229910052802 copper Inorganic materials 0.000 description 1
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- 238000010168 coupling process Methods 0.000 description 1
- 238000005859 coupling reaction Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 201000010099 disease Diseases 0.000 description 1
- 208000037265 diseases, disorders, signs and symptoms Diseases 0.000 description 1
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Classifications
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
- Y02B70/00—Technologies for an efficient end-user side electric power management and consumption
- Y02B70/30—Systems integrating technologies related to power network operation and communication or information technologies for improving the carbon footprint of the management of residential or tertiary loads, i.e. smart grids as climate change mitigation technology in the buildings sector, including also the last stages of power distribution and the control, monitoring or operating management systems at local level
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y04—INFORMATION OR COMMUNICATION TECHNOLOGIES HAVING AN IMPACT ON OTHER TECHNOLOGY AREAS
- Y04S—SYSTEMS INTEGRATING TECHNOLOGIES RELATED TO POWER NETWORK OPERATION, COMMUNICATION OR INFORMATION TECHNOLOGIES FOR IMPROVING THE ELECTRICAL POWER GENERATION, TRANSMISSION, DISTRIBUTION, MANAGEMENT OR USAGE, i.e. SMART GRIDS
- Y04S20/00—Management or operation of end-user stationary applications or the last stages of power distribution; Controlling, monitoring or operating thereof
- Y04S20/20—End-user application control systems
Abstract
The utility model discloses an overhaul base and air switch, this maintenance base includes two grades of switches in one six group and sets up each the air switch circuit gone up mutually and the standby switch circuit in three -phase alternating current circuit, two grades of switches in six groups are gone up mutually at each and are all included first circuit change over switch and second circuit change over switch, the first end of air switch circuit and the first end of standby switch the circuit all first port through first circuit change over switch and the maintenance base of the secondary side that is located voltage transformer correspond and are connected, the second end of the second of air switch circuit end and standby switch circuit all is connected with the second port that is located the maintenance base that the load inclined through second circuit change over switch. The utility model discloses having guaranteed the load and can not lost the electricity, operation process is simple, and the maloperation probability almost is zero, and the security performance is high, has reduced the volume that overhauls the base.
Description
Technical field
This utility model is related to voltage transformer current protection technology field, more particularly to one kind maintenance pedestal and air
Switch.
Background technology
Voltage transformer (Potential transformer, PT) is to be used for by converting equipment once in power system
Magnitude of voltage linear transform is secondary voltage value, and the secondary voltage value after the change of disease is supplied to protection device, measure and control device or meter
The equipment of amount device even load device.Very big short circuit current will be produced during the secondary circuit short-circuit of voltage transformer, can be by voltage
Transformer burns out, and the secondary side of therefore voltage transformer is provided with air switch (in buckling terminal box) and it is protected
Shield.
This air switch in longtime running, easily produce in resistive big thus leading to partial pressure serious, or even one is mutually or many
Mutually disconnect the problems such as lead to loss of voltage.These problems will make voltage between air switch first port and second port
Difference, and then make the voltage that protection device or measure and control device etc. collect that deviation to occur, these problems also can make air switch simultaneously
Each phase voltage size of second port output is uneven, and then line voltage can be led to low, or produces larger residual voltage
Or negative sequence voltage, the misoperations such as protection device triggering bus protection, main transformer protection and route protection will be caused when serious, therefore,
Need in time air switch to be changed.
Refer to Fig. 1, in traditional maintenance mode, for changing the air switch in buckling terminal box, need voltage is mutual
Circuit between sensor and load is by the controlling switch circuit (K overhauling in pedestal1Place circuit) it is transformed into backup circuit breaker circuit
(K2Place circuit), concrete operations refer to table 1 it is seen then that when by controlling switch circuit conversion to backup circuit breaker circuit, needing
To K1、K2And K3State switch over, and K1、K2And K3State switching to follow strict order, otherwise may
Cause to load dead electricity, operating process very complicated, security performance is low；In addition, because switching device is many, the volume of maintenance pedestal
Greatly.
Table 1 air switch isolation processes illustrate table
Therefore, a kind of maintenance pedestal solving above-mentioned technical problem and air switch how is provided to be those skilled in the art
The problem needing at present to solve.
Utility model content
The purpose of this utility model be a kind of maintenance pedestal is provided it is ensured that load will not dead electricity, operating process is simple, by mistake
Operation probability is almost nil, and security performance is high, in addition, only needing to six groups of two gear switch here, reduces maintenance pedestal
Volume；Of the present utility model another object is that provides a kind of air switch being applied to above-mentioned maintenance pedestal.
For solving above-mentioned technical problem, this utility model provides a kind of maintenance pedestal, including six groups of two gear switch
And it is arranged on the air switch circuit in each phase in three-phase circuit and backup circuit breaker circuit, described six groups two grades
Switch all includes the first circuit changing switch and second circuit switching switch in each phase, wherein：
The first end of the first end of described air switch circuit and described backup circuit breaker circuit is all by for described
The first end of the first end of air switch circuit and described backup circuit breaker circuit carries out the described first circuit switching of seamless switching
Switch is corresponding with the first port of the described maintenance pedestal of the secondary side positioned at voltage transformer to be connected, described air switch circuit
The second end and described backup circuit breaker circuit the second end all by for the second end of described air switch circuit and institute
The second end stating backup circuit breaker circuit carries out described second circuit switching switch and the described inspection positioned at load-side of seamless switching
The second port repairing pedestal connects, and arranges having air switch connectivity port in described air switch circuit；
Wherein, the first end of described first circuit changing switch is connected with the first port of described maintenance pedestal, and described the
Second end of one circuit changing switch and the first end of described air switch circuit and/or the first end of described backup circuit breaker circuit
It is connected, the first end of described second circuit switching switch is connected with the second port of described maintenance pedestal, and described second circuit is cut
The second end changing the second end of switch with the second end of described air switch circuit and/or described backup circuit breaker circuit is connected.
Preferably, described six group of two gear switch is six groups two grades of MBB type rotary switch.
Preferably, this maintenance pedestal also includes：
Air switch circuit alternate display lamp group, including being separately mounted to different arbitrarily biphase of described three-phase circuit
On air switch circuit between the alternate display lamp of two air switch circuit.
Preferably, described backup circuit breaker circuit includes：
For described backup circuit breaker circuit is carried out with the standby overflow protecting element of overcurrent protection, its first end is as described
The first end of backup circuit breaker circuit, its second end is as the second end of described backup circuit breaker circuit.
Preferably, described standby overflow protecting element is earthenware fuse.
Preferably, this maintenance pedestal also includes：
Backup circuit breaker circuit alternate display lamp group, including being separately mounted to different arbitrarily biphase of described three-phase circuit
On backup circuit breaker circuit between the alternate display lamp of two backup circuit breaker circuit.
Preferably, described air switch connectivity port is the slot of plug-in.
For solving above-mentioned technical problem, this utility model additionally provides a kind of air switch, is applied to as any of the above-described
In described maintenance pedestal, described air switch is provided with plug assembly, described plug assembly includes and described air switch
The connectivity port that connectivity port is adapted.
This utility model provides a kind of maintenance pedestal and air switch, and this maintenance pedestal includes six groups of two gear switch
And it is arranged on the air switch circuit in each phase in three-phase circuit and backup circuit breaker circuit, open for this six groups two grades
Close and the first circuit changing switch and second circuit switching switch are all included on each phase, the first circuit changing switch is arranged on
Between the first port of maintenance pedestal and the first end of air switch circuit and the first end of backup circuit breaker circuit, second circuit
Switching switch is arranged on the second of the second port of maintenance pedestal and the second end of air switch circuit and backup circuit breaker circuit
Between end, because the first circuit changing switch is used for the first of the first end to air switch circuit and/or backup circuit breaker circuit
End carries out seamless switching, and second circuit switching switch is for the second end of air switch circuit and/or backup circuit breaker circuit
Second end carries out seamless switching it is seen then that in order to change the air switch in buckling terminal box, by voltage transformer and load
Between circuit when being backup circuit breaker circuit by the controlling switch circuit conversion overhauled in pedestal, only needing will be to six group of two gear switch
Directly changed it is ensured that loaded will not dead electricity, operating process is simple, and maloperation probability is almost nil, and security performance is high, separately
Outward, only need to six groups of two gear switch here, reduce the volume of maintenance pedestal.
Brief description
In order to be illustrated more clearly that the technical scheme in this utility model embodiment, below will be to prior art and embodiment
In required use accompanying drawing be briefly described it should be apparent that, drawings in the following description are only of the present utility model
Some embodiments, for those of ordinary skill in the art, on the premise of not paying creative work, can also be according to this
A little accompanying drawings obtain other accompanying drawings.
A kind of structural representation of maintenance pedestal that Fig. 1 provides for prior art；
A kind of structural representation of maintenance pedestal that Fig. 2 provides for this utility model；
The structural representation of another kind of maintenance pedestal that Fig. 3 provides for this utility model；
The front view of the design principle figure of maintenance pedestal of corresponding Fig. 3 that Fig. 4 provides for this utility model；
The left view of the design principle figure of maintenance pedestal of corresponding Fig. 3 that Fig. 5 provides for this utility model；
A kind of structural representation of the plug assembly of maintenance pedestal that Fig. 6 provides for this utility model.
Specific embodiment
Core of the present utility model be a kind of maintenance pedestal is provided it is ensured that load will not dead electricity, operating process is simple, by mistake
Operation probability is almost nil, and security performance is high, in addition, only needing to six groups of two gear switch here, reduces maintenance pedestal
Volume；Another core of the present utility model is to provide a kind of air switch being applied to above-mentioned maintenance pedestal.
Purpose, technical scheme and advantage for making this utility model embodiment are clearer, new below in conjunction with this practicality
Accompanying drawing in type embodiment, is clearly and completely described it is clear that being retouched to the technical scheme in this utility model embodiment
The embodiment stated is a part of embodiment of this utility model, rather than whole embodiments.Based on the enforcement in this utility model
Example, the every other embodiment that those of ordinary skill in the art are obtained under the premise of not making creative work, broadly fall into
The scope of this utility model protection.
Embodiment one
Refer to Fig. 2, a kind of structural representation of maintenance pedestal that Fig. 2 provides for this utility model, this maintenance pedestal bag
Include：
One six groups of two gear switch and be arranged on air switch circuit 1 in each phase in three-phase circuit and
Backup circuit breaker circuit 2, six group of two gear switch all includes the first circuit changing switch 31 and second circuit switching in each phase
Switch 32, wherein：
The first end of the first end of air switch circuit 1 and backup circuit breaker circuit 2 is all by for air switch electricity
The first end of the first end on road 1 and backup circuit breaker circuit 2 carries out the first circuit changing switch 31 of seamless switching and positioned at voltage
The corresponding connection of first port, the second end of air switch circuit 1 and the backup circuit breaker of the maintenance pedestal of the secondary side of transformer
Second end of circuit 2 is all by seamless for carrying out to the second end of air switch circuit 1 and the second end of backup circuit breaker circuit 2
The second circuit switching switch 32 of switching is connected with the second port of the maintenance pedestal positioned at load-side, in air switch circuit 1
Setting having air switch connectivity port；
Wherein, the first end of the first circuit changing switch 31 is connected with the first port of maintenance pedestal, the first circuit switching
Second end of switch 31 is connected with the first end of air switch circuit 1 and/or the first end of backup circuit breaker circuit 2, second circuit
The first end of switching switch 32 is connected with the second port of maintenance pedestal, and the second end of second circuit switching switch 32 is opened with air
Second end at the second end and/or backup circuit breaker circuit 2 of closing circuit 1 is connected.
It is understood that provided herein six groups of two gear switch can make air switch circuit 1 and backup circuit breaker
Circuit 2 carry out seamless switching it is ensured that load will not dead electricity, therefore, when need by the circuit between voltage transformer and load by
When air switch circuit 1 in maintenance pedestal is converted to backup circuit breaker circuit 2, only need to six group of two gear switch directly to be carried out turning
Change.After six group of two gear switch is switched to backup circuit breaker circuit 2, the air switch in air switch circuit 1 is had a power failure isolation, protects
The safety having hindered maintainer disconnects and reliable replacing.
This utility model provides a kind of maintenance pedestal, and this maintenance pedestal includes six groups of two gear switch and is arranged on
The air switch circuit in each phase in three-phase circuit and backup circuit breaker circuit, this six group of two gear switch is in each phase
On all include the first circuit changing switch and second circuit switching switch, first circuit changing switch is arranged on maintenance pedestal
Between the first end of the first end of first port and air switch circuit and backup circuit breaker circuit, second circuit switching switch sets
Put between the second port of maintenance pedestal and the second end of air switch circuit and the second end of backup circuit breaker circuit, because
First circuit changing switch is used for carrying out no seaming and cutting to the first end of air switch circuit and/or the first end of backup circuit breaker circuit
Change, second circuit switching switch is for carrying out to the second end of air switch circuit and/or the second end of backup circuit breaker circuit no
Seaming and cutting are changed it is seen then that in order to change the air switch in buckling terminal box, by the circuit between voltage transformer and load by examining
When the controlling switch circuit conversion repaiied in pedestal is backup circuit breaker circuit, only need six group of two gear switch directly will be changed,
Ensure that load will not dead electricity, operating process is simple, and maloperation probability is almost nil, and security performance is high, in addition, only needing to here
One six groups of two gear switch, reduces the volume of maintenance pedestal.
Embodiment two
Refer to Fig. 3, Fig. 4 and Fig. 5, wherein, the structural representation of another kind of maintenance pedestal that Fig. 3 provides for this utility model
Figure, the front view of the design principle figure of maintenance pedestal of corresponding Fig. 3 that Fig. 4 provides for this utility model, Fig. 5 is this utility model
The left view of the design principle figure of maintenance pedestal of the corresponding Fig. 3 providing, this maintenance pedestal is on the basis of embodiment one：
Preferably, six group of two gear switch is six groups two grades of MBB type rotary switch.
It is understood that six group of two gear switch selects six groups two grades of MBB type (Make Before in the application
Break) rotary switch, is characterized in that movable contact has a state all contacting with front and back contact in transposition, then disconnects again
Front contact, keeps contact condition with back contact；Namely six groups two grades of MBB type rotary switch ensure that the first circuit switching is opened
Close 31 and second circuit switching switch 32 before the handover after with load not dead electricity during switching, it is to avoid the secondary side of voltage transformer
The situation of disconnecting occurs and load-side between.
Preferably, this maintenance pedestal also includes：
Air switch circuit alternate display lamp group, including being separately mounted on different arbitrarily biphase of three-phase circuit
The alternate display lamp of two air switch circuit between air switch circuit 1.
Shown in Figure 3, the alternate display lamp (L1 in corresponding diagram of two air switch circuit：AB and L1：BC), respectively
It is arranged between the A phase of three-phase circuit and B phase and between B phase and C phase, when movable contact and the sky of MBB type rotary switch
When the first end of electrical switching circuit 1 and the second end connect, secretly to be sentenced by alternate the bright of display lamp of two air switch circuit
Air switch circuit 1 in each phase of breaking whether normally.
Specifically, when the movable contact of MBB type rotary switch is connected with the first end of air switch circuit 1 and the second end
When, if the alternate display lamp of air switch circuit between A phase and B phase is bright, show that A phase is equal with the air switch circuit 1 in B phase
Normally, if the alternate display lamp of air switch circuit between A phase and B phase is dark, shows that the air in A phase and/or B phase is opened
Close circuit 1 and do not turn on, therefore, now need the air switch circuit 1 in A phase and B phase is checked.
Preferably, backup circuit breaker circuit 2 includes：
For backup circuit breaker circuit 2 is carried out with the standby overflow protecting element of overcurrent protection, its first end is opened as standby
Close the first end of circuit 2, its second end is as the second end of backup circuit breaker circuit 2.
It is understood that when changing air switch, because air switch circuit 1 is isolated, as redundant circuit
Backup circuit breaker circuit 2 should have and the effect of air switch circuit 1 identical, is therefore isolated in air switch circuit 1, new sky
Air cock is changed before finishing, and backup circuit breaker circuit 2 also should have overcurrent protection function, it is to avoid electricity in maintenance process
The secondary side of pressure transformer is short-circuited and leads to the situation that voltage transformer is burned out to occur, and it also avoid injury to personnel
Etc. accident, safe.
Preferably, standby overflow protecting element is earthenware fuse.
It is understood that having small volume, easily changeable feature in view of earthenware electric fuse, therefore standby excessively stream is protected
Protection element is made up of 3 earthenware electric fuses close with former air switch operating chacteristics.
Certainly, standby overflow protecting element here is not limited in earthenware fuse, can also be other kinds of guarantor
Protection element, this utility model here is not particularly limited.
Preferably, this maintenance pedestal also includes：
The alternate display lamp group of backup circuit breaker circuit 2, including being separately mounted on different arbitrarily biphase of three-phase circuit
Backup circuit breaker circuit 2 between the alternate display lamp of two backup circuit breaker circuit 2.
Shown in Figure 3, the alternate display lamp (L2 in corresponding diagram of two backup circuit breaker circuit 2：AB and L2：BC), divide
Be not arranged between the A phase of three-phase circuit and B phase and between B phase and C phase, when MBB type rotary switch movable contact with
When the first end of backup circuit breaker circuit 2 and the second end connect, secretly come by alternate the bright of display lamp of two backup circuit breaker circuit 2
Judge backup circuit breaker circuit 2 in each phase whether normally.
Specifically, when the movable contact of MBB type rotary switch is connected with the first end of backup circuit breaker circuit 2 and the second end
When, if the alternate display lamp of backup circuit breaker circuit 2 between A phase and B phase is bright, show the backup circuit breaker circuit 2 in A phase and B phase
All normallies, if the alternate display lamp of backup circuit breaker circuit 2 between A phase and B phase is dark, show standby in A phase and/or B phase
With on-off circuit 2 and do not turn on, therefore, now need the backup circuit breaker circuit 2 in A phase and B phase is checked.
Specifically it is contemplated that the operation power of on-off circuit alternate display lamp group, reduce and voltage transformer capacity is accounted for
All can be by specified than, the alternate display lamp of two backup circuit breaker circuit 2 and the alternate display lamp of above-mentioned two air switch circuit
The very low light emitting diode of voltage, concatenates larger loop resistance simultaneously and constitutes.
It is understood that setting air switch circuit alternate display lamp group and the alternate display lamp of backup circuit breaker circuit 2
The purpose of group be in order to the MBB type rotary switch at six groups two grades perform handover to which circuit when, judge that this circuit whether can
Enough normal works, for example, be switched to backup circuit breaker circuit 2 but the alternate display lamp group of backup circuit breaker circuit 2 does not work then it represents that standby
It is possible to break down with on-off circuit 2, need backup circuit breaker circuit 2 is checked.
Preferably, air switch connectivity port is the slot of plug-in.
It is understood that conventional connected mode between air switch and maintenance pedestal is to be connected using flexible circuit conductor, then
Screw down, when needing to change air switch, then will disconnect flexible circuit conductor in powered buckling terminal box, when therefore changing
One end of flexible circuit conductor is in vacant state, if isolation is improper, hanging flexible circuit conductor can touch live terminal by mistake, makes live terminal short circuit
Or the situation of ground connection occurs, safety is low.
Therefore, the connected mode of air switch and maintenance pedestal is changed to the Hard link of plug-in, can be largely
Avoid the generation of danger, now air switch connectivity port is set to slot, be connected with the contact pin coupling of setting on air switch.
Certainly, these are only preferred version, this utility model to this and is not specially limited.
In addition, air switch connectivity port, the first circuit changing switch 31 and second circuit switching switch 32 is total
Contact resistance should (secondary side that circuit here refers to voltage transformer be connected with load-side far below the resistance of total circuit
The circuit being formed)；In addition, the contact resistance in each phase answers relative equilibrium, thus avoiding it to export to the three-phase voltage of load-side
Each mutually uneven.
In addition, the back structures of maintenance pedestal here are designed as the channel-section steel mouth structure of standard, in order to be arranged on buckling
On the channel-section steel of the routine in terminal box.Certainly, this utility model to this and is not specially limited.
Below the process being changed air switch using this maintenance pedestal is briefly introduced：
It is assumed here that the alternate display lamp of backup circuit breaker circuit 2 is red led, the alternate display lamp of air switch circuit is
Green indicating lamp.
(1) when overhauling the air switch on pedestal in upper and lower port appearance potential difference, then judge this air switch fault
Need to change；
(2) maintenance pedestal is switched to backup circuit breaker circuit 2, the red led observing backup circuit breaker circuit 2 is correct
Light；
(3) state run in backup circuit breaker circuit 2, fault air switch is replaced by new air switch, then will
New air switch sets in conjunction position；
(4) maintenance pedestal is switched to air switch circuit 1, the green indicating lamp observing air switch circuit 1 is correct
Light.Now defect air switch is changed and is finished.
Should be noted that in operation before being switched to backup circuit breaker circuit 2 it is necessary to check whether earthenware electric fuse is complete
Good；Secondly, during loop switch, if finding, the loop display lamp after switching fails correctly to light, and switches back immediately to former
The loop come, and check reason.
Compared with embodiment one, the maintenance pedestal that the present embodiment provides further increases standby overflow protecting element, makes
When changing air switch, the backup circuit breaker circuit of the secondary side and load-side that connect voltage transformer still has overcurrent protection work(
Can, it is to avoid cause due to the secondary circuit short-circuit of voltage transformer the situation that voltage transformer is burned out to occur, also avoid
Injury to personnel, improves safety；In addition, also add air switch circuit alternate display lamp group and backup circuit breaker circuit phase
Between display lamp group, can judge that this circuit whether can when which circuit six groups two grades of MBB type rotary switch perform handover to
Enough normal works, facilitate the monitoring to circuit for the monitoring personnel, can be prevented effectively from and circuit abnormality and lead to voltage transformer
Secondary side and load-side be unable to the situation of normally；And using slotting between the air switch of the present embodiment and maintenance pedestal
Pull out the Hard link of formula, it is to avoid when disconnecting air switch, hanging flexible circuit conductor can touch live terminal by mistake, make live terminal short circuit or connect
The situation on ground occurs, and improves safety when changing air switch.
Corresponding with above-mentioned maintenance base embodiment, this utility model additionally provides a kind of air switch, is applied to
State in any one maintenance pedestal, air switch is provided with plug assembly, plug assembly includes and air switch connectivity port phase
The connectivity port adapting to.
Shown in Figure 6, a kind of structural representation of the plug assembly of maintenance pedestal that Fig. 6 provides for this utility model.
Wherein, plug assembly includes the hard copper bar of one-tenth " L " type, and the both ends of the surface of air switch are close at its M end, in air
Fixing in connecting groove in the both ends of the surface of switch, so that plug assembly and air switch is fixed together, its N-terminal is as air
The contact pin (connectivity port being adapted with air switch connectivity port) of switch, in the slot of insertion maintenance pedestal, realizes empty
Air cock and the connection overhauling pedestal.
In this specification, each embodiment is described by the way of going forward one by one, and what each embodiment stressed is and other
The difference of embodiment, between each embodiment identical similar portion mutually referring to.
Also, it should be noted in this manual, such as first and second or the like relational terms be used merely to by
One entity or operation are made a distinction with another entity or operation, and not necessarily require or imply these entities or operation
Between there is any this actual relation or order.And, term " inclusion ", "comprising" or its any other variant meaning
Covering comprising of nonexcludability, so that including a series of process of key elements, method, article or equipment not only include that
A little key elements, but also include other key elements being not expressly set out, or also include for this process, method, article or
The intrinsic key element of equipment.In the absence of more restrictions, the key element being limited by sentence "including a ...", does not arrange
Remove and also there is other identical element in the process including described key element, method, article or equipment.
Described above to the disclosed embodiments, makes professional and technical personnel in the field be capable of or new using this practicality
Type.Multiple modifications to these embodiments will be apparent from for those skilled in the art, is determined herein
The General Principle of justice can be realized in the case of without departing from spirit or scope of the present utility model in other embodiments.Cause
This, this utility model is not intended to be limited to the embodiments shown herein, and is to fit to and principles disclosed herein
The wide scope consistent with features of novelty.
Claims (8)
1. a kind of maintenance pedestal is it is characterised in that including six groups of two gear switch and being arranged in three-phase circuit
Air switch circuit in each phase and backup circuit breaker circuit, described six group of two gear switch all includes the first electricity in each phase
Road switching switch and second circuit switching switch, wherein：
The first end of the first end of described air switch circuit and described backup circuit breaker circuit is all by for described air
The first end of the first end of on-off circuit and described backup circuit breaker circuit carries out described first circuit changing switch of seamless switching
Corresponding with the first port of the described maintenance pedestal of the secondary side positioned at voltage transformer connect, the of described air switch circuit
Second end of two ends and described backup circuit breaker circuit is all by for the second end of described air switch circuit and described standby
Carry out described second circuit switching switch and the described maintenance base positioned at load-side of seamless switching with the second end of on-off circuit
The second port of seat connects, and arranges having air switch connectivity port in described air switch circuit；
Wherein, the first end of described first circuit changing switch is connected with the first port of described maintenance pedestal, described first electricity
Road switches the first end that the second end switching is with described air switch circuit and/or the first end phase of described backup circuit breaker circuit
Even, the first end of described second circuit switching switch is connected with the second port of described maintenance pedestal, described second circuit switching
Second end of switch is connected with the second end of described air switch circuit and/or the second end of described backup circuit breaker circuit.
2. maintenance pedestal according to claim 1 is it is characterised in that described six group of two gear switch is six groups two grades of MBB
Type rotary switch.
3. maintenance pedestal according to claim 2 is it is characterised in that this maintenance pedestal also includes：
Air switch circuit alternate display lamp group, including being separately mounted on different arbitrarily biphase of described three-phase circuit
The alternate display lamp of two air switch circuit between air switch circuit.
4. maintenance pedestal according to claim 3 is it is characterised in that described backup circuit breaker circuit includes：
For described backup circuit breaker circuit is carried out with the standby overflow protecting element of overcurrent protection, its first end is as described standby
The first end of on-off circuit, its second end is as the second end of described backup circuit breaker circuit.
5. maintenance pedestal according to claim 4 is it is characterised in that described standby overflow protecting element melts for earthenware
Silk.
6. maintenance pedestal according to claim 5 is it is characterised in that this maintenance pedestal also includes：
Backup circuit breaker circuit alternate display lamp group, including being separately mounted on different arbitrarily biphase of described three-phase circuit
The alternate display lamp of two backup circuit breaker circuit between backup circuit breaker circuit.
7. maintenance pedestal according to claim 1 is it is characterised in that described air switch connectivity port is inserting of plug-in
Groove.
8. a kind of air switch is it is characterised in that being applied in the maintenance pedestal as described in any one of claim 1-7, described
Plug assembly is provided with air switch, described plug assembly includes the connection end being adapted with described air switch connectivity port
Mouthful.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620727549.5U CN205945211U (en) | 2016-07-06 | 2016-07-06 | Overhaul base and air switch |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620727549.5U CN205945211U (en) | 2016-07-06 | 2016-07-06 | Overhaul base and air switch |
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| Publication Number | Publication Date |
|---|---|
| CN205945211U true CN205945211U (en) | 2017-02-08 |
Family
ID=57929015
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201620727549.5U Active CN205945211U (en) | 2016-07-06 | 2016-07-06 | Overhaul base and air switch |
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|---|---|
| CN (1) | CN205945211U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111900698A (en) * | 2020-07-31 | 2020-11-06 | 中国南方电网有限责任公司超高压输电公司昆明局 | Safety anti-misoperation circuit of converter transformer |
-
2016
- 2016-07-06 CN CN201620727549.5U patent/CN205945211U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111900698A (en) * | 2020-07-31 | 2020-11-06 | 中国南方电网有限责任公司超高压输电公司昆明局 | Safety anti-misoperation circuit of converter transformer |
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