CN208046213U - A kind of resident's low pressure TN system Zero line breaking preventors - Google Patents
A kind of resident's low pressure TN system Zero line breaking preventors Download PDFInfo
- Publication number
- CN208046213U CN208046213U CN201820632895.4U CN201820632895U CN208046213U CN 208046213 U CN208046213 U CN 208046213U CN 201820632895 U CN201820632895 U CN 201820632895U CN 208046213 U CN208046213 U CN 208046213U
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- China
- Prior art keywords
- resident
- relay
- intermediate relay
- preventors
- low pressure
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- 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.)
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Abstract
The utility model is related to technical field of electric automation, more particularly to a kind of resident's low pressure TN system Zero line breaking preventors, including building head cabinet power supply, three phase mains master switch, fire-fighting shunt opening module, overvoltage/undervoltage protection module, relay and electrical load, fire-fighting shunt opening module is equipped in the three phase mains master switch, the utility model is in residential neighborhoods TN power supply systems, the resident that avoids that is not comprehensive for different location neutral line break safeguard measure and designing causes to burn the loss of electric appliance because of neutral line break, reduce the area that has a power failure caused by neutral line break in TN systems, it is efficiently and effectively safeguarded convenient for electrician.
Description
Technical field
The utility model is related to technical field of electric automation, and in particular to a kind of resident's low pressure TN system zero line breaks guarantor
Protect device.
Background technology
Cell low voltage power distribution network mostly uses case change-building head cabinet-unit distribution box-resident and registers one's residence the tree topology knot of box
Structure, when the neutral line break of building head cabinet to unit distribution box, there is exception in all resident family's voltages of unit distribution box power supply.Work as case
When fading to the neutral line break of building head cabinet, all load voltages are abnormal after building head cabinet.If relaying configuration place becomes in case, does not rise and appoint
What is acted on, and configuration can only prevent case from fading to the neutral line break of building head cabinet in building head cabinet, and building head cabinet is disconnected to unit distribution box zero curve
Line cannot be protected, so wanting reasonable disposition point, can just play maximum effect.
By analysis, relaying configuration point should be arranged the most reasonable in unit distribution box, and protective range is maximum, also allows for specially
The regular maintenance of industry department.
Utility model content
In view of the deficiencies of the prior art, the utility model discloses a kind of resident's low pressure TN system Zero line breaking preventors,
The technical issues of for solving to mention in background technology.
Specific technical solution is as follows：
A kind of resident's low pressure TN system Zero line breaking preventors, including building head cabinet power supply, three phase mains master switch, fire-fighting point
Module, overvoltage/undervoltage protection module, relay and electrical load are encouraged, fire-fighting shunt opening module is equipped in the three phase mains master switch,
Tri- connecting terminals of A, B, C of one end of the three phase mains master switch are connected with A, B, C three-phase output end of building head cabinet power supply,
Tri- connecting terminals of A, B, C of the other end of the three phase mains master switch are connected with three groups of electrical loads respectively, the building head
A, B, C three-phase output end of cabinet power supply are connected with three groups of overvoltage/undervoltage protection modules respectively, and overvoltage/undervoltage protection module described in three groups is equal
It is connected with relay by conducting wire, the relay includes the first intermediate relay 1ZJ, the second intermediate relay 2ZJ and third
Intermediate relay 3ZJ, the first intermediate relay 1ZJ, the second intermediate relay 2ZJ and third intermediate relay 3ZJ's is defeated
The auxiliary normally-closed contact of outlet mutually interlocks electrical connection, the first intermediate relay 1ZJ, the second intermediate relay after interlocking
The output end of building head cabinet power supply is coupled in parallel between 2ZJ and third intermediate relay 3ZJ；
Preferably, the electrical load is resident's home electric；
Preferably, the overvoltage/undervoltage protection module sets delay recovery actuation time as 3S；
Preferably, the overvoltage/undervoltage protection module sets voltage as 185V or more, 260V or less；
Preferably, the fire-fighting shunt opening module is fire-fighting shunt opening trip coil.
Advantageous effect：
The utility model is not complete for different location neutral line break safeguard measure in residential neighborhoods TN power supply systems
Face and design resident is avoided to cause to burn the loss of electric appliance because of neutral line break, reduce caused by neutral line break in TN systems
Power failure area, is efficiently and effectively safeguarded convenient for electrician.
Description of the drawings
In order to illustrate the embodiment of the utility model or the technical proposal in the existing technology more clearly, below will be to embodiment
Or attached drawing needed to be used in the description of the prior art is briefly described, it should be apparent that, the accompanying drawings in the following description is only
It is some embodiments of the utility model, for those of ordinary skill in the art, in the premise not made the creative labor
Under, other drawings may also be obtained based on these drawings.
Fig. 1 is the utility model principle block diagram；
Fig. 2 is the utility model electrical schematic diagram.
Reference numeral is as follows：1, building head cabinet power supply, 2, three-phase total power switch, 3, fire-fighting shunt opening module, 4, overvoltage/undervoltage protects
Protect module, 50, relay, 6, electrical load.
Specific implementation mode
It is new below in conjunction with this practicality to keep the purpose, technical scheme and advantage of the utility model embodiment clearer
Attached drawing in type embodiment, the technical scheme in the utility model embodiment is clearly and completely described, it is clear that is retouched
The embodiment stated is the utility model a part of the embodiment, instead of all the embodiments.Based on the implementation in the utility model
Example, the every other embodiment that those of ordinary skill in the art are obtained without creative efforts belong to
The range of the utility model protection.
It is in the description of the present invention, it should be noted that term "center", "upper", "lower", "left", "right", " perpendicular
Directly ", the orientation or positional relationship of the instructions such as "horizontal", "inner", "outside" is to be based on the orientation or positional relationship shown in the drawings, and is only
The utility model and simplifying describes for ease of description, do not indicate or imply the indicated device or element must have it is specific
Orientation, with specific azimuth configuration and operation, therefore should not be understood as limiting the present invention.
Referring to Fig. 1-2：A kind of resident's low pressure TN system Zero line breaking preventors, building head cabinet power supply 1, three phase mains master switch
2, fire-fighting shunt opening module 3, overvoltage/undervoltage protection module 4, relay 5 and electrical load 6 are equipped in the three phase mains master switch 2
Fire-fighting shunt opening module 3, the fire-fighting shunt opening module 3 are fire-fighting shunt opening trip coil, one end of the three phase mains master switch 2
A, tri- connecting terminals of B, C are connected with A, B, C three-phase output end of building head cabinet power supply 1, the three phase mains master switch 2 it is another
Tri- connecting terminals of A, B, C at end are connected with three groups of electrical loads 6 respectively, and the electrical load 6 is resident's home electric, described
A, B, C three-phase output end of building head cabinet power supply 1 are connected with three groups of overvoltage/undervoltage protection modules 4 respectively, the overvoltage/undervoltage protection module 4
Delay recovery actuation time is set as 3S, the overvoltage/undervoltage protection module 4 sets voltage as 185V or more, and 260V is hereinafter, three groups
The overvoltage/undervoltage protection module 4 is connected with relay 5 by conducting wire, and the relay 5 includes the first intermediate relay 1ZJ,
Second intermediate relay 2ZJ and third intermediate relay 3ZJ, the first intermediate relay 1ZJ, the second intermediate relay 2ZJ
Electrical connection is mutually interlocked with the auxiliary normally-closed contact of the output end of third intermediate relay 3ZJ, among described first after interlocking
The output of building head cabinet power supply 1 is coupled in parallel between relay 1ZJ, the second intermediate relay 2ZJ and third intermediate relay 3ZJ
End.
When supply voltage is normal, three phase mains master switch 2 is in normal "on" position, at this time overvoltage/undervoltage protection module 4
The auxiliary normally-closed contact of normal work, three group relays 5 disconnects, and fire-fighting shunt opening module 3 must not be electric to realize normal power supply；When
When neutral line break, overvoltage/undervoltage protection module 4 detects that electric voltage exception is more than its setting range, and overvoltage/undervoltage protection module 4 is dynamic at this time
Make that the auxiliary normally-closed contact of three group relays 5 is made to generate corresponding reset, since the auxiliary normally-closed contact of three group relays 5 is mutual
Interlocking connection connects fire-fighting shunt opening module 3 to control three-phase electricity at this time when wherein any one group of normally-closed contact action resets
Source master switch 2 trips, and to reach deenergization, the purpose of electrical equipment in family is signed in protection.
Above example is only to illustrate the technical solution of the utility model, rather than its limitations；Although with reference to aforementioned reality
Example is applied the utility model is described in detail, it will be understood by those of ordinary skill in the art that：It still can be to preceding
The technical solution recorded in each embodiment is stated to modify or equivalent replacement of some of the technical features；And these
Modification or replacement, the spirit and model of various embodiments of the utility model technical solution that it does not separate the essence of the corresponding technical solution
It encloses.
Claims (5)
1. a kind of resident's low pressure TN system Zero line breaking preventors, it is characterised in that：Including building head cabinet power supply (1), three phase mains
Master switch (2), fire-fighting shunt opening module (3), overvoltage/undervoltage protection module (4), relay (5) and electrical load (6), the three-phase electricity
Fire-fighting shunt opening module (3), tri- terminals of A, B, C of one end of the three phase mains master switch (2) are equipped in source master switch (2)
A, B, C three-phase output end of the buildings Zi Yu head cabinet power supply (1) are connected, A, B, C tri- of the other end of the three phase mains master switch (2)
A connecting terminal is connected with three groups of electrical loads (6) respectively, A, B, C three-phase output end of the building head cabinet power supply (1) respectively with
Three groups of overvoltage/undervoltage protection modules (4) are connected, and overvoltage/undervoltage protection module (4) described in three groups is connected with relay (5) by conducting wire,
The relay (5) includes the first intermediate relay 1ZJ, the second intermediate relay 2ZJ and third intermediate relay 3ZJ, described
The auxiliary normally-closed contact of the output end of first intermediate relay 1ZJ, the second intermediate relay 2ZJ and third intermediate relay 3ZJ
Mutually interlocking electrical connection, the first intermediate relay 1ZJ, the second intermediate relay 2ZJ after interlocking and third centre relay
The output end of building head cabinet power supply (1) is coupled in parallel between device 3ZJ.
2. resident's low pressure TN system Zero line breaking preventors according to claim 1, it is characterised in that：The electrical load
(6) it is resident's home electric.
3. resident's low pressure TN system Zero line breaking preventors according to claim 1, it is characterised in that：The overvoltage/undervoltage is protected
Shield module (4) sets delay recovery actuation time as 3S.
4. resident's low pressure TN system Zero line breaking preventors according to claim 1, it is characterised in that：The overvoltage/undervoltage is protected
Shield module (4) sets voltage as 185V or more, 260V or less.
5. resident's low pressure TN system Zero line breaking preventors according to claim 1, it is characterised in that：The fire-fighting shunt opening
Module (3) is fire-fighting shunt opening trip coil.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820632895.4U CN208046213U (en) | 2018-04-28 | 2018-04-28 | A kind of resident's low pressure TN system Zero line breaking preventors |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820632895.4U CN208046213U (en) | 2018-04-28 | 2018-04-28 | A kind of resident's low pressure TN system Zero line breaking preventors |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN208046213U true CN208046213U (en) | 2018-11-02 |
Family
ID=63928183
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201820632895.4U Expired - Fee Related CN208046213U (en) | 2018-04-28 | 2018-04-28 | A kind of resident's low pressure TN system Zero line breaking preventors |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN208046213U (en) |
-
2018
- 2018-04-28 CN CN201820632895.4U patent/CN208046213U/en not_active Expired - Fee Related
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20181102 Termination date: 20190428 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |