CN207664593U - Power distribution system voltage comprehensive protector - Google Patents
Power distribution system voltage comprehensive protector Download PDFInfo
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- CN207664593U CN207664593U CN201820074314.XU CN201820074314U CN207664593U CN 207664593 U CN207664593 U CN 207664593U CN 201820074314 U CN201820074314 U CN 201820074314U CN 207664593 U CN207664593 U CN 207664593U
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Abstract
The utility model provides a kind of power distribution system voltage comprehensive protector, is related to the technical field of relay protection, which includes：Overvoltage-undervoltage protector, the first control loop and the second control loop；Overvoltage-undervoltage protector is arranged in each phase line of major loop to be protected；First control loop includes being connected in series with：First normally opened contact of intermediate relay, the shunt opening trip coil of main circuit breaker in relay group and major loop, relay group includes three relays being connected in parallel, and control coil and the overvoltage-undervoltage protector of each relay connect one to one；After relay of second control loop in relay group is off; the first normally opened contact for controlling the intermediate relay of the first control loop is in closed state; so that protective device is in protection operating mode; the protector structure that the utility model alleviates existing electric system is complicated; safeguard inconvenient, expensive and poor adaptability technical problem.
Description
Technical field
The utility model is related to the technical fields of relay protection, are filled more particularly, to a kind of power distribution system voltage integrated protection
It sets.
Background technology
Under current three-phase and four-line or Three-phase five-wire distribution system normal operation, the normal neutral conductor caused by a variety of causes
It is exactly after " zero " line disconnects, load side large area single-phase load such as household electrical appliance, illuminator, computer printer etc. to be caused to burn out
Phenomenon occurs.
Existing protection scheme mainly forms complete set of equipments three-phase protector with electronic components such as nested transistors, main
Divide three parts, Input Monitor Connector part, analytic operation rating unit and execution part, it is integrated relatively high, but price is high
It is expensive, and adaptability and popularization are general.For example, as such 100A or so protector price about in more than the 1000 yuan of people
Coin, and the general 63A of operating current of the protector and from lower relatively universal, are not easy to promote.Can only be in 630A or less at present
Protector.And the practical application of such protector almost knows that less, as rural area, also various residential quarters, factory are total less
Distribution main circuit breaker especially large-scale frame formula breaker is common basic electrical equipment, and all trades and professions are generally installed certainly at this stage
Dynamic air-break and frame-type circuit breaker are as three-phase and four-line or Three-phase five-wire master switch.Therefore, using such protector without
Method replaces above-mentioned each breaker to match breaker as total, and has such protector due to being electronic component composition.So safeguarding
Maintenance is not to having generally for the common electrical of professional electronics technology, certain bad maintenance.One small component goes wrong just
The so high protector of cost may be caused to can not work normally.This be also can not one of popularity reason, practicability is poor.But
Such single-phase protector is relatively inexpensive, but can not replace three-phase.
Utility model content
In view of this, the purpose of this utility model is to provide a kind of power distribution system voltage comprehensive protector, to alleviate
The protector structure of existing electric system is complicated, safeguards inconvenient, expensive and poor adaptability technical problem.
In a first aspect, the utility model embodiment provides a kind of power distribution system voltage comprehensive protector, including：It crosses and owes
Press protector, the first control loop and the second control loop；The overvoltage-undervoltage protector is arranged in the every of major loop to be protected
In a phase line；First control loop includes being connected in series with：First normally opened contact of intermediate relay, relay group and institute
The shunt opening trip coil of main circuit breaker in major loop is stated, the relay group includes three relays being connected in parallel, each
The control coil of relay connects one to one with the overvoltage-undervoltage protector；Second control loop is used in the relay
After relay in device group is off, the first normally opened contact of the intermediate relay of first control loop is controlled
In closed state, so that the protective device is in protection operating mode.
Further, second control loop includes：First sub- control loop and the second sub- control loop；Described first
Sub- control loop includes：The normally-closed contact of the intermediate relay and the control coil of the time relay, wherein the centre after
The control coil of the normally-closed contact of electric appliance and the time relay is connected in series with；The second sub- control loop includes：It is described
Second normally opened contact of intermediate relay, the contact of the control coil of the intermediate relay and the time relay, wherein
After the connection of the contact shunt of second normally opened contact of the intermediate relay and the time relay with the intermediate relay
The control coil of device is connected in series with.
Further, the overvoltage-undervoltage protector includes：First overvoltage-undervoltage protector, the second overvoltage-undervoltage protector and third
Overvoltage-undervoltage protector；Wherein, first overvoltage-undervoltage protector is arranged between L11 phase lines and the neutral conductor；Described second is excessively deficient
Protector is pressed to be arranged between L12 phase lines and the neutral conductor；Third overvoltage-undervoltage protector setting L13 phase lines and the neutral conductor it
Between.
Further, the relay group includes：First relay, the second relay and third relay, wherein：It is described
The control coil of first relay is connected with the output end of first overvoltage-undervoltage protector；The control of second relay
Coil is connected with the output end of second overvoltage-undervoltage protector；The control coil of the third relay and the third mistake
The output end of pressure-failure protector is connected.
Further, the over-pressed parameter of the overvoltage-undervoltage protector is 275 ± 5% volts；The overvoltage-undervoltage protector
Under-voltage parameter is 170 volts.
Further, the main circuit breaker is breaker of 3310 types with shunt opening trip coil.
Further, the model HH54P type relays of the intermediate relay.
Further, the delay time of the time relay is 36 seconds to 40 seconds.
Further, when the protective device is in protection operating mode, if the overvoltage-undervoltage protector interrupts,
The contact that relay is then corresponded in the relay group is attracted, so that the shunt opening trip coil charges, to control the master
Breaker is in tripped condition.
In the power distribution system voltage comprehensive protector that the utility model embodiment is provided, including overvoltage/undervoltage protection
Device, the first control loop and the second control loop；Overvoltage-undervoltage protector is arranged in each phase line of major loop to be protected；The
One control loop includes being connected in series with：First normally opened contact of intermediate relay, main circuit breaker in relay group and major loop
Shunt opening trip coil, relay group includes three relays being connected in parallel, the control coil of each relay with it is excessively deficient
Pressure protector connects one to one；After relay of second control loop in relay group is off, control
The first normally opened contact for making the intermediate relay of the first control loop is in closed state, so that protective device is in protection work
Pattern.
The utility model is mainly equipped with electrician's commonly several electric material combinations on the basis of original electric system
It forms, mainly simple and clear, Maintenance and Repair are convenient, cheap, adapt to various three-phase breaker of plastic casing and various three photo frames
Pantograph disconnecting switch, and valuable lattice are substantially stationary, will not become larger with breaker capacity and change, and can adapt to various environment installations
It is convenient, strong operability, common electrical can assembly and connection, and then the protector structure for alleviating existing electric system is complicated,
Safeguard inconvenient, expensive and poor adaptability technical problem.
Other feature and advantage of the utility model will illustrate in the following description, also, partly from specification
In become apparent, or understood by implementing the utility model.The purpose of this utility model and other advantages are illustrating
Specifically noted structure is realized and is obtained in book, claims and attached drawing.
To enable the above objects, features, and advantages of the utility model to be clearer and more comprehensible, preferred embodiment cited below particularly, and
The appended attached drawing of cooperation, is described in detail below.
Description of the drawings
It, below will be right in order to illustrate more clearly of specific embodiment of the present invention or technical solution in the prior art
Specific implementation mode or attached drawing needed to be used in the description of the prior art are briefly described, it should be apparent that, it is described below
In attached drawing be that some embodiments of the utility model are not paying creativeness for those of ordinary skill in the art
Under the premise of labour, other drawings may also be obtained based on these drawings.
Fig. 1 is the schematic diagram according to a kind of power distribution system voltage comprehensive protector of the utility model embodiment；
Fig. 2 is shown according to a kind of installation of the overvoltage-undervoltage protector of the utility model embodiment on major loop to be protected
It is intended to；
Fig. 3 is the structural schematic diagram according to a kind of first control loop of the utility model embodiment；
Fig. 4 is the structural schematic diagram according to a kind of second control loop of the utility model embodiment；
Fig. 5 be according to a kind of overvoltage-undervoltage protector of the utility model embodiment and the first control loop repeat circuit group it
Between connecting structure for electrical equipment figure；
Fig. 6 is the schematic diagram according to a kind of electric system of the utility model embodiment.
Specific implementation mode
To keep the purpose, technical scheme and advantage of the utility model embodiment clearer, below in conjunction with attached drawing to this
The technical solution of utility model is clearly and completely described, it is clear that described embodiment is that the utility model part is real
Example is applied, instead of all the embodiments.Based on the embodiments of the present invention, those of ordinary skill in the art are not making
The every other embodiment obtained under the premise of creative work, shall fall within the protection scope of the present invention.
According to the utility model embodiment, a kind of embodiment of power distribution system voltage comprehensive protector is provided.
Fig. 1 is according to a kind of schematic diagram of power distribution system voltage comprehensive protector of the utility model embodiment, such as Fig. 1
Shown, which includes：Overvoltage-undervoltage protector 10, the first control loop 20 and the second control loop 30.
As shown in Figure 1, the overvoltage-undervoltage protector is arranged in each phase line of major loop to be protected；Wherein, it waits protecting
The major loop of shield is as shown in Fig. 2, major loop as shown in Figure 2 is the distribution system of three-phase and four-line, or matching for Three-phase five-wire
Electric system；
As shown in figure 3, first control loop includes being connected in series with：The first normally opened contact of intermediate relay KA4,
The shunt opening trip coil of main circuit breaker MX in relay group (KA1, KA2 and KA3) and the major loop wraps in the relay group
Three relays being connected in parallel are included, the control coil of each relay connects one to one with the overvoltage-undervoltage protector；It can
Selection of land, main circuit breaker are breaker of 3310 types with shunt opening trip coil；The model HH54P type relays of intermediate relay.
In the utility model embodiment, relay of second control loop in the relay group is in
After off-state, the first normally opened contact for controlling the intermediate relay of first control loop is in closed state, so that
The protective device is in protection operating mode.
The utility model is mainly being equipped with electrician's commonly several electric material groups on the basis of original electric system
It closes, mainly simple and clear, Maintenance and Repair are convenient, cheap, adapt to various three-phase breaker of plastic casing and various three-phases
Frame-type circuit breaker, and valuable lattice are substantially stationary, will not become larger with breaker capacity and change, and can adapt to various environment peaces
Dress is convenient, strong operability, common electrical can assembly and connection, and then the protector structure for alleviating existing electric system is multiple
It is miscellaneous, safeguard inconvenient, expensive and poor adaptability technical problem.
As shown in figure 4, second control loop includes：First sub- control loop 41 and the second sub- control loop 42.Such as
Shown in Fig. 4, the both ends of the first sub- control loop 41 are connected with L11 and L12 respectively, the both ends difference of the second sub- control loop 42
It is connected with L12 and L13.
The first sub- control loop 41 includes：The normally-closed contact of the intermediate relay KA4 and time relay KT's
Control coil, wherein the normally-closed contact of the intermediate relay KA4 and the control coil of the time relay are connected in series with；
Wherein, the delay time of the time relay is 36 seconds to 40 seconds.
The second sub- control loop 42 includes：The second normally opened contact of the intermediate relay KA4, the intermediate relay
The contact of the control coil of device KA4 and the time relay KT, wherein the second normally opened contact of the intermediate relay and institute
It states and is connected in series with the control coil of the intermediate relay after the contact shunt connection of the time relay.
As shown in Fig. 2, the overvoltage-undervoltage protector includes：First overvoltage-undervoltage protector KV1, the second overvoltage-undervoltage protector
KV2 and third overvoltage-undervoltage protector KV3.
Wherein, the first overvoltage-undervoltage protector KV1 is arranged between L11 phase lines and the neutral conductor；
The second overvoltage-undervoltage protector KV2 is arranged between L12 phase lines and the neutral conductor；
The third overvoltage-undervoltage protector KV3 is arranged between L13 phase lines and the neutral conductor.
It should be noted that the over-pressed parameter of the overvoltage-undervoltage protector is 275 ± 5% volts；The overvoltage/undervoltage protection
The under-voltage parameter of device is 170 volts.
In the utility model embodiment, by three single-phase under-voltage protectors of crossing (that is, above-mentioned first overvoltage-undervoltage protector
KV1, the second overvoltage-undervoltage protector KV2 and third overvoltage-undervoltage protector KV3) respectively as the every phase-voltage measurement unit of detection.Three
A single-phase wire area for crossing under-voltage protector can specifically can be according to protection zone in the arbitrary area city of load line trackside
Domain is determined by the test position on the neutral conductor.Protection zone is changeable, can arbitrarily by it is single-phase cross under-voltage protector into
Line neutral conductor sampled point specific location is adjusted.Under normal circumstances, broken neutral line mostly occurs in distribution transformer neutral point
Sleeve extracting end, from and main each connecting pin of neutral conductor extraction wire.Mainly to be three single-phase excessively deficient electricity close to transformer region
Press the main installation region of protector.
As shown in figure 3, the relay group includes：First relay KA1, the second relay KA2 and third relay
KA3, wherein：
As shown in figure 5, the output of the control coil of the first relay KA1 and the first overvoltage-undervoltage protector KV1
End (that is, port 3 and port 4 of KV1) is connected；
The output end of the control coil of the second relay KA2 and the second overvoltage-undervoltage protector KV2 are (that is, KV2
Port 3 and port 4) it is connected；
The output end of the control coil of the third relay KA3 and the third overvoltage-undervoltage protector KV3 are (that is, KV3
Port 3 and port 4) it is connected.
The concrete operating principle of above-mentioned protective device is described in detail below in conjunction with Fig. 2 to Fig. 5.
When circuit as shown in Figures 2 to 5 starts normally after the power is turned on, each phase phase voltage is AC220v or so in major loop,
It is connected to the under-voltage protector KV1 excessively of phase line L11 and the neutral conductor, is connected to the under-voltage protector KV2 excessively of L12 and the neutral conductor, with
And be connected to L13 and the neutral conductor crosses under-voltage protector KV3 since powering on within 35 seconds, above three crosses low-voltage protection
The output end 3 and 4 terminals of output end of device will not output voltages.At this point, being connected to the output end that three are crossed under-voltage protector
The coil of three relay KA1, KA2 and KA3 (three relays in Fig. 5) must not be electric, therefore, three relays KA1, KA2
It is in closed state with the normally closed point of KA3.Though a part of circuit for the main road device shunt opening trip coil that breaks is connected, due on power supply
The time relay starts timing after electricity, timing time by cross under-voltage protector normally output make three relay KA1, KA2,
KA3 be attracted after time setting, about 36 seconds or more delayed settings, before this contact of the time relay be constantly in disconnection shape
State can not make main circuit breaker though shunt opening trip coil control loop KA1, KA2, KA3 normally-closed contact of main circuit breaker is made to connect
Shunt opening trip coil energized action tripping.
Three are crossed under-voltage protectors since powering on to after 35 seconds, and above three crosses the output end of under-voltage protector
3 and 4 terminals of output end export normal voltage, at this point, the control coil of three relays KA1, KA2 and KA3 obtain it is electric, three after
Normally-closed contact corresponding to electric appliance KA1, KA2 and KA3 disconnects, and disconnects a shunt opening trip coil circuit part for main circuit breaker.This
When time relay KT also powered on after three relays KA1, KA2, KA3 are attracted, the normally opened of time relay KT touches at this time
Point timing closing.The control coil of intermediate relay KA4 obtains electric in second sub- control loop 42, in the second sub- control loop 42
The second normally opened contact of intermediate relay KA4 obtains electric actuation, and intermediate relay KA4 is in self-locking state.Second in KA4 is normally opened
Contact closure connects a main circuit breaker shunt opening coil control loop part, while the normally-closed contact of KA4 disconnects, and causes time relay
The coil losing electricity of device avoids the time relay long charged.It is disconnected at this point, the shunted exciter tripping trip(ping) circuit of main circuit breaker is in
State.
When the protective device is in protection operating mode, if the overvoltage-undervoltage protector interrupts, it is described after
The contact that relay is corresponded in electric appliance group is attracted, so that the shunt opening trip coil charges, to control at the main circuit breaker
In tripped condition.
For example, after the system neutral conductor disconnects, in L11 phase factors on-load in three-phase imbalance load relative to L12,
L13 heavy and lights, then L11 phases institute on-load it is larger to bear voltage, when more than 270 V, crossing under-voltage protector KV1 can snap action
Interrupt output is connected to the KA1 intermediate relays meeting dead electricity action of KV1 outputs at this time, and KA1 normally-closed contacts, which reset to connect, to be ready for
Main circuit breaker shunt opening trip coil trip(ping) circuit, instantaneously main circuit breaker is made to trip, the overvoltage in cutting system.Protection system
Each phase voltage in system.
When phase shortage, L11, L12, L13 have certain phase phase shortage in three-phase caused by the reasons such as main circuit breaker bad connection in system
When, be connected in certain phase cross under-voltage protector output end interrupt output makes the intermediate relay dead electricity of the phase reset immediately, together
When the reset intermediate relay normally-closed contact connect main circuit breaker shunt opening trip coil, so that main circuit breaker trip protection load side is set
It is standby.
But since the shunt opening trip coil power supply of main circuit breaker takes to main breaker power source side L1 and L2, Gu power supply L1,
When L2, L3 phase shortage, in protector no longer protection domain, only shield to the phase shortage of main circuit breaker load side.
By foregoing description it is found that in the utility model embodiment, mainly with three single-phase under-voltage protectors excessively
Whether monitoring three-phase phase voltage had under-voltage situation, and when electric system normal operation, output end exports normal voltage, allows
Connect intermediate relay coil obtains electric actuation.After the disconnected neutral conductor occurs in electric system or when other electric voltage exceptions, moment allows
It is connected to the intermediate relay coil losing electricity release of the single-phase output end for crossing under-voltage protector.It is connected to the intermediate relay simultaneously
Normally closed point, which is closed, to be connected, and so that matching used main circuit breaker shunt opening trip coil is obtained electric, is driven the main circuit breaker to thread off immediately and is jumped
Lock interrupts system power supply, protects each equipment safety.
To sum up, in the utility model embodiment, it is convenient that mating electrical attachment is selected, and each hardware store is all commercially available, has
It is easy to mating installation, easy to maintain, operation is simple, ensures equipment application generality, and has mainly with ripe common relay
Based on, flexible movements are easy to observe, lower-price characteristic.But also have the function of open-phase protection, ensure that three-phase equilibrium is negative
Such as motor is carried not burnt by phase shortage.Usually such as failure, which can act rapidly, and cut-out in time is protected
Area city power supply, protection equipment escape injury for a long time.
In conclusion protective device provided by the utility model has the following advantages：
1, after the neutral conductor of electric system disconnects, unbalanced load will appear the abnormal conditions such as overvoltage, this this practicality
The novel timely and effective control main circuit breaker tripping of provided protective device energy, protects all single-phase electric devices；
2, when phase shortage occurs in electric system, three-phase in protective device energy effective protection system provided by the utility model
Load, for example, threephase motor, water pump, etc. equipment；
3, protective device provided by the utility model is not limited by load capacity to disconnected particularly suitable as large-scale total distribution
Road device disconnects after the neutral conductor and open-phase protection；
4, protective device provided by the utility model is of low cost, be easily installed, be easy to maintain, practicability and operable
Property it is strong, be easy to universal and vast electrician author and receive；
5, protective device reliable operation provided by the utility model is stablized, is not susceptible to malfunction, tripping.
The utility model embodiment additionally provides a kind of electric system.
Fig. 6 is according to a kind of schematic diagram of electric system of the utility model embodiment, as shown in fig. 6, the electric system
The main power distribution system voltage comprehensive protector 100 including being described described in above-described embodiment further includes that master to be protected returns
Road 200, wherein the power distribution system voltage comprehensive protector 100 is for protecting the major loop 200.
The utility model mainly on original circuit breaker foundation be equipped with electrician commonly the combination of several electric materials and
At mainly simple and clear, Maintenance and Repair are convenient, cheap, adapt to various three-phase breaker of plastic casing and various three plate hangers
Formula breaker, and valuable lattice are substantially stationary, will not become larger with breaker capacity and change, and can adapt to various environment installation sides
Just, strong operability, common electrical can assembly and connection, and then the protector structure for alleviating existing electric system is complicated, dimension
Shield is inconvenient, and expensive and poor adaptability technical problem can carry out the load equipment in major loop to be protected
Effectively and timely protect.
In addition, in the description of the utility model embodiment unless specifically defined or limited otherwise, term " installation ",
" connected ", " connection " shall be understood in a broad sense, for example, it may be being fixedly connected, may be a detachable connection, or integrally connect
It connects；It can be mechanical connection, can also be electrical connection；It can be directly connected, can also indirectly connected through an intermediary, it can
To be the connection inside two elements.For the ordinary skill in the art, it can understand above-mentioned term with concrete condition
Concrete meaning in the present invention.
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.In addition, term " the
One ", " second ", " third " are used for description purposes only, and are not understood to indicate or imply relative importance.
It is apparent to those skilled in the art that for convenience and simplicity of description, the system of foregoing description,
The specific work process of device and unit, can refer to corresponding processes in the foregoing method embodiment, and details are not described herein.
In several embodiments provided herein, it should be understood that disclosed systems, devices and methods, it can be with
It realizes by another way.The apparatus embodiments described above are merely exemplary, for example, the division of the unit,
Only a kind of division of logic function, formula that in actual implementation, there may be another division manner, in another example, multiple units or component can
To combine or be desirably integrated into another system, or some features can be ignored or not executed.Another point, it is shown or beg for
The mutual coupling, direct-coupling or communication connection of opinion can be by some communication interfaces, device or unit it is indirect
Coupling or communication connection can be electrical, machinery or other forms.
The unit illustrated as separating component may or may not be physically separated, aobvious as unit
The component shown may or may not be physical unit, you can be located at a place, or may be distributed over multiple
In network element.Some or all of unit therein can be selected according to the actual needs to realize the mesh of this embodiment scheme
's.
In addition, each functional unit in each embodiment of the utility model can be integrated in a processing unit,
Can be that each unit physically exists alone, it can also be during two or more units be integrated in one unit.
Finally it should be noted that：Embodiment described above, only specific embodiment of the present utility model, to illustrate this
The technical solution of utility model, rather than its limitations, the scope of protection of the utility model is not limited thereto, although with reference to aforementioned
The utility model is described in detail in embodiment, it will be understood by those of ordinary skill in the art that：It is any to be familiar with this skill
The technical staff in art field within the technical scope disclosed by the utility model, still can be to the skill recorded in previous embodiment
Art scheme modify or can readily occur in variation or equivalent replacement of some of the technical features；And these modifications,
Variation is replaced, the spirit and model of the utility model embodiment technical solution that it does not separate the essence of the corresponding technical solution
It encloses, should be covered within the scope of the utility model.Therefore, the scope of protection of the utility model is answered described is wanted with right
Subject to the protection domain asked.
Claims (9)
1. a kind of power distribution system voltage comprehensive protector, which is characterized in that including：Overvoltage-undervoltage protector, the first control loop
With the second control loop；
The overvoltage-undervoltage protector is arranged in each phase line of major loop to be protected；
First control loop includes being connected in series with：First normally opened contact of intermediate relay, relay group and the master
The shunt opening trip coil of main circuit breaker in circuit, the relay group include three relays being connected in parallel, each relay
The control coil of device connects one to one with the overvoltage-undervoltage protector；
After relay of second control loop in the relay group is off, control described first
First normally opened contact of the intermediate relay of control loop is in closed state, so that the protective device is in protection Working mould
Formula.
2. protective device according to claim 1, which is characterized in that second control loop includes：First son control
Circuit and the second sub- control loop；
The first sub- control loop includes：The normally-closed contact of the intermediate relay and the control coil of the time relay,
In, the control coil of the normally-closed contact of the intermediate relay and the time relay is connected in series with；
The second sub- control loop includes：Second normally opened contact of the intermediate relay, the control of the intermediate relay
The contact of coil and the time relay, wherein the second normally opened contact and the time relay of the intermediate relay
Contact shunt connection after be connected in series with the control coil of the intermediate relay.
3. protective device according to claim 1, which is characterized in that the overvoltage-undervoltage protector includes：First overvoltage/undervoltage
Protector, the second overvoltage-undervoltage protector and third overvoltage-undervoltage protector；
Wherein, first overvoltage-undervoltage protector is arranged between L11 phase lines and the neutral conductor；
Second overvoltage-undervoltage protector is arranged between L12 phase lines and the neutral conductor；
The third overvoltage-undervoltage protector is arranged between L13 phase lines and the neutral conductor.
4. protective device according to claim 3, which is characterized in that the relay group includes：First relay, second
Relay and third relay, wherein：
The control coil of first relay is connected with the output end of first overvoltage-undervoltage protector；
The control coil of second relay is connected with the output end of second overvoltage-undervoltage protector；
The control coil of the third relay is connected with the output end of the third overvoltage-undervoltage protector.
5. protective device according to claim 3, which is characterized in that the over-pressed parameter of the overvoltage-undervoltage protector is 275
± 5% volt；The under-voltage parameter of the overvoltage-undervoltage protector is 170 volts.
6. protective device according to claim 1, which is characterized in that the main circuit breaker is 3310 types band shunted exciter tripping line
The breaker of circle.
7. protective device according to claim 1, which is characterized in that the model HH54P types of the intermediate relay after
Electric appliance.
8. protective device according to claim 2, which is characterized in that the delay time of the time relay be 36 seconds extremely
40 seconds.
9. protective device according to claim 1, which is characterized in that be in protection operating mode in the protective device
When, if the overvoltage-undervoltage protector interrupts, the contact that relay is corresponded in the relay group is attracted, so that described point
Tripping coil electrification is encouraged, tripped condition is in control the main circuit breaker.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820074314.XU CN207664593U (en) | 2018-01-16 | 2018-01-16 | Power distribution system voltage comprehensive protector |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820074314.XU CN207664593U (en) | 2018-01-16 | 2018-01-16 | Power distribution system voltage comprehensive protector |
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| Publication Number | Publication Date |
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| CN207664593U true CN207664593U (en) | 2018-07-27 |
Family
ID=62945248
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109436235A (en) * | 2018-10-26 | 2019-03-08 | 上海船舶研究设计院（中国船舶工业集团公司第六0四研究院） | The common Metal halogen lamp application system of carrying dangerous goods shipping cargo area and method once in a while |
| CN111276936A (en) * | 2020-03-04 | 2020-06-12 | 安徽鑫龙低压电器有限公司 | Three-phase under-voltage protection method |
-
2018
- 2018-01-16 CN CN201820074314.XU patent/CN207664593U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109436235A (en) * | 2018-10-26 | 2019-03-08 | 上海船舶研究设计院（中国船舶工业集团公司第六0四研究院） | The common Metal halogen lamp application system of carrying dangerous goods shipping cargo area and method once in a while |
| CN111276936A (en) * | 2020-03-04 | 2020-06-12 | 安徽鑫龙低压电器有限公司 | Three-phase under-voltage protection method |
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