CN1930642A - Overvoltage protection device in common/differential mode of reduced size - Google Patents
Overvoltage protection device in common/differential mode of reduced size Download PDFInfo
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- CN1930642A CN1930642A CNA2005800071133A CN200580007113A CN1930642A CN 1930642 A CN1930642 A CN 1930642A CN A2005800071133 A CNA2005800071133 A CN A2005800071133A CN 200580007113 A CN200580007113 A CN 200580007113A CN 1930642 A CN1930642 A CN 1930642A
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- phase
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- rheostat
- neutral line
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01C—RESISTORS
- H01C7/00—Non-adjustable resistors formed as one or more layers or coatings; Non-adjustable resistors made from powdered conducting material or powdered semi-conducting material with or without insulating material
- H01C7/10—Non-adjustable resistors formed as one or more layers or coatings; Non-adjustable resistors made from powdered conducting material or powdered semi-conducting material with or without insulating material voltage responsive, i.e. varistors
- H01C7/12—Overvoltage protection resistors
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01C—RESISTORS
- H01C13/00—Resistors not provided for elsewhere
- H01C13/02—Structural combinations of resistors
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Abstract
The invention relates to an overvoltage protection device (1) embodied to provide protection in common or differential modes and comprising at least one electrically-insulated housing (2), specifically embodied to house at least one electrical binomial, formed by a so-called ground-phase varistor (PT), with a phase connector (p) and a ground connector (t), arranged between a first phase (L1) for protection and ground (T) and a so-called neutral-phase varistor (PN), with a phase connector (p) and a neutral connector (n), arranged between said first phase (L1) for protection and neutral (N), said phase-ground (PT) and phase-neutral (PN) varistors being mounted next to each other within said housing (2) such as to form an assembly binomial (3), characterised in that the protection device (1) comprises electrical insulation means (20), embodied for the electrical insulation of the ground connection (t) from the phase-ground varistor (PT) and the neutral connection (n) from the phase-neutral varistor (PN). The invention relates to devices for protection against overvoltages.
Description
Technical field
The present invention relates to protect electric equipment to avoid the general technical field of the device of overvoltage (the particularly instantaneous overvoltage that causes owing to lightning) influence.
More properly; the present invention relates to a kind of overvoltage protection; it is suitable for providing protection under common mode and differential mode; and comprise at least one the electric insulation package (package) that is particularly suitable for holding at least one electric binomial (electrical binomial); this electricity binomial by be arranged on to be protected first mutually and the so-called phase-ground rheostat between the ground with phase terminal and ground terminal and be arranged on to be protected described first mutually and the mutually so-called-neutral line rheostat between the neutral line with phase terminal and neutral line terminal constitute; described phase-ground rheostat with mutually-neutral line rheostat is mounted adjacent one another in described encapsulation, thereby form assembly binomial (assembly binomial).
Background technology
The device that is used to protect electric equipment to avoid over-voltage protection is used widely, and is collectively referred to as " lightning arrester ".Their main purpose is to make conducting lightning currents can be delivered to ground, and the auxiliary voltage that is gone out by these inductions by current can be cut down to the equipment that is connected with lightning arrester and the compatible level of operation of instrument.
Traditionally, have two kinds of overvoltage protection patterns, promptly wherein guard block be connected between active conductor (mutually or the neutral line) and the ground common mode MC and wherein guard block be connected between the active conductor differential mode MD of (that is, mutually and between the neutral line).
Have rheostatic protective device and be often used in protection equipment under common mode and these two kinds of patterns of differential mode.
In known devices, each branch road is equipped with a rheostat usually, and in other words, if protective device will be protected single-phase network, then it must comprise the electric binomial that is made of at least two rheostats, to provide protection under above-mentioned two patterns.Therefore, in single-phase, electric binomial generally includes and is connected the so-called phase-ground rheostat between the phase and ground to be protected and is connected mutually so-called-neutral line rheostat between described phase to be protected and the neutral line.In three-phase network, need at least three electric binomials to carry out identical functions.
According to the requirement of standard (NF-EN 61643-11 and NF C 61740/95), must the rheostatic end of life of control, this need adopt integrated circuit breaker, thermal circuit beraker for example, thus each rheostat all is equipped with its oneself open-circuit system.Then rheostat and open-circuit system thereof are installed in the supporting encapsulation, this assembly is formed in this specification remainder the device that is called as " motor (motor) ".
Like this; known common mode protective device is generally including at least two encapsulation (or motor) to protect under above-mentioned two kinds of patterns under the situation of single-phase network; and under the situation of three-phase network, generally including at least six encapsulation (or motor) to protect, each encapsulation (or motor) comprises single rheostat.
Although well known device can provide gratifying protection for electrical network or equipment really, they still have some shortcomings.
At first, these devices are big especially, and each encapsulation (or motor) takies its space separately, and double according to the adopt quantity that encapsulates in this space.Be appreciated that in polyphase network these devices will take the volume of can not ignore, and increasing application aims is to reduce the size of protective device, and makes protective device discrete as far as possible.
In addition, the type extracted of well known device is formed into two boxes of every phase usually, in other words, has at least two interchangeable boxes under the situation of single-phase network, and have at least six interchangeable boxes under the situation of three-phase network.
Yet this structure is complicated especially for the user, and the user reasonably expects whenever have single box mutually, rather than whenever as prior art has two boxes mutually.
Be well known that rheostat can make up with gap, to overcome these shortcomings.
Like this, under the situation of single-phase network, lightning arrester comprises the mutually so-called-neutral line rheostat that is connected between phase to be protected and the neutral point, and is connected the gap between neutral point and the ground.In the type extracted of this device, each guard block all is attached in the single box, thereby lightning arrester comprises two interchangeable boxes, wherein has only one to be connected to phase to be protected, and this is in fact corresponding with the desired Rational structure of user.Similarly, under the situation of three-phase network, lightning arrester will comprise three rheostats (each rheostat all is connected between the phase and the neutral line to be protected) and be connected gap between the neutral line and the ground that each guard block all is attached in the single box.Like this, under the situation of three-phase network, lightning arrester comprises four boxes that can extract, comprises three boxes that are connected to three phases to be protected, i.e. each box mutually, and this expects intuitively that with the user situation about obtaining is corresponding.
Therefore, these devices at first two branch roads of phase-neutral line and the neutral line-ground are set by series connection and under common mode protecting network, secondly since phase-neutral line branch road and under differential mode protecting network.
Yet this assembly can not be used for the network that all network types, particularly neutral line connectivity scenario extremely is IT (neutral line is with the ground isolation or block (impedant)) type.
In addition, this assembly is unsuitable for the cascade (cascading) of lightning arrester.Particularly, in the neutral line-ground branch road of first lightning arrester at it of input side, comprise rheostat, and when second lightning arrester of outlet side comprises gap in its neutral line-ground branch road, under superpotential situation, the gap that is arranged on outlet side will carry most conducting lightning currents, and the rheostat of input side will be not can not loaded than the highland, and this desired purpose when together using two lightning arresters is opposite.
Therefore; usefully; attempt to make a kind of overvoltage protection; it can be operated under common mode and differential mode; and it is compatible with all types of neutral lines in compactness to ground connectivity scenario (particularly TT, TN-S, TN-C or IT pattern); made things convenient for end user's selection thus, particularly need not to know and the relevant information of network neutral line pattern because of the user.
Summary of the invention
Therefore; the objective of the invention is to overcome above-mentioned kind of shortcoming, and a kind of new overvoltage protection is provided, this device is suitable for providing protection under common mode and differential mode; and do not have above-mentioned shortcoming, and have limited size to the ground connectivity scenario in compatible with all neutral line.
Another object of the present invention is to propose a kind of new protective device of safeguarding especially easily.
Another object of the present invention is to propose a kind ofly can extract in the type especially easily rationally and the new protective device that uses directly perceived at it.
Another object of the present invention is to describe a kind of new protective device that is suitable for variety of network types that is adjusted to especially easily.
Realize purpose of the present invention by utilizing a kind of overvoltage protection; this device is suitable for providing protection under common mode and differential mode; and comprise at least one electric insulation package; this electricity insulation package is particularly suitable for holding at least one electric binomial; this electricity binomial is made of the have phase terminal and the so-called phase-ground rheostat of ground terminal and the mutually so-called-neutral line rheostat with phase terminal and neutral line terminal that is arranged between described first phase place to be protected and the neutral line that are arranged between first phase and ground to be protected; described phase-ground rheostat and phase-neutral line rheostat is installed in the described encapsulation side by side; thereby constituent components binomial; this device is characterised in that described protective device comprises the electric insulation arrangement that is suitable for the isolation of the rheostatic neutral line terminal electricity of rheostatic ground, described phase-ground terminal and mutually described-neutral line.
Description of drawings
With reference to the accompanying drawing that only provides for exemplary and indefiniteness purpose, other concrete feature and advantage of the present invention will be more obvious, and will provide details in the following description, in the accompanying drawings:
Fig. 1 represents that its inside is assembled with the partial sectional view of the encapsulation of assembly binomial;
Fig. 2 represents the overall stereogram of extracting the encapsulation of type according to of the present invention;
Fig. 3 represents that encapsulation shown in Figure 2 will assemble the stereogram of pedestal thereon;
Fig. 4 is illustrated under the situation of single-phase network, according to the electrical schematic diagram of overvoltage protection of the present invention;
Fig. 5 is illustrated under the situation of three-phase network, according to the electrical schematic diagram of overvoltage protection of the present invention.
Embodiment
Overvoltage protection according to the present invention is designed to be connected in parallel on the electrical equipment or equipment to be protected.
Expression " electric equipment " is meant all types of instruments or the network of voltage disturbance (the especially instantaneous overvoltage that causes owing to the lightning) interference that may be subjected to separate sources.
Protective device according to the present invention is preferably low voltage surge arrester, and in other words, it preferably is designed to protect low-voltage equipment (for example, 50 volts to 750 volts low-voltage equipment).
Now with reference to Fig. 1 to Fig. 5 overvoltage protection 1 is described.
Overvoltage protection 1 is suitable for providing protection under common mode and differential mode, and in other words, it must use under common mode or differential mode, and need not to change by any way this device, particularly changes the characteristic and the combination of the guard block of constituent apparatus.
According to the present invention, as depicted in figs. 1 and 2, protective device 1 comprises at least one electric insulation package 2, in other words, and the preferably encapsulation of making by non electrically conductive material.
According to the present invention; protective device 1 also comprises at least one electric binomial, and this electricity binomial is by being arranged on the mutually so-called-ground rheostat PT between the first phase L1 to be protected and the ground T and being arranged on the described first phase L1 to be protected and the so-called phase-neutral line rheostat PN between the neutral line N constitutes.
Like this, phase-ground rheostat PT is set to (that is, between active conductor and ground) protection electric equipment under common mode, and (that is, between two active conductors) provides protection under differential mode and phase-neutral line rheostat PN is set to.
According to the present invention, as shown in Figure 1, encapsulation 2 be particularly suitable for holding by phase-ground rheostat PT with mutually-electric binomial that neutral line rheostat PN constitutes, in other words, its size is provided for holding no more than two rheostat.
According to the present invention, constitute the phase-ground rheostat PT of electric binomial with mutually-neutral line rheostat PN be installed in side by side the encapsulation 2 in, thereby constituent components binomial 3.She Ji protective device 1 is preferably compact like this, phase-ground rheostat PT with mutually-neutral line rheostat PN no longer is assembled in the independent encapsulation in according to one type of prior art syringe as them, but is contained in the same encapsulation 2.
Requirement according to standard, each phase-ground rheostat PT or phase-neutral line rheostat PN preferably is provided with its oneself tripper, this tripper is preferably hot type, so that prevent thermal runaway (thermal runaway) when rheostat is aging fully early.
Particularly preferably, as shown in Figure 1, this tripper can be formed by the bar 4 that opens circuit that extends between two end 4A, 4B, and one of described end 4A preferably utilizes thermofussion welding to be fixed to relevant rheostatic one and extremely goes up.Therefore, open circuit the preferably stress welding of end 4A of bar 4 so that rheostatic useful life during fast the end temperature in the rheostat rise and will make the welding fusing, during this welding fusing, with the release bar 4 that opens circuit, and relevant rheostat is disconnected from electric equipment.Thereby, be equipped with the encapsulation 2 of its phase-ground rheostat PT or phase-neutral line rheostat PN (phase-ground rheostat PT with mutually-neutral line rheostat PN has their tripper 4) to advantageously generate " two " motor, in other words, formation has two rheostatic motors.
Obviously, encapsulation 2 can be made of single supporting member, and this supporting member needs not to be sealing, but is particularly suitable for holding by phase-ground rheostat PT or electric binomial that phase-neutral line rheostat PN constitutes.
According to another attracting especially specific characteristic of the present invention, She Ji protective device 1 can easily be adjusted to the form that can extract like this.
In order to realize this point, protective device 1 preferably includes preferred fixing pedestal 6, in other words, promptly for good and all is connected to the pedestal (Fig. 6) on the electric equipment to be protected.
Particularly preferably, each encapsulation 2 all is equipped with insertion/extracting apparatus 7 (Fig. 2), and this device is adapted such that encapsulating 2 can carry out dismountable electrical connection with respect to pedestal 6.As shown in Figure 2, this insertion/extracting apparatus 7 preferably is made of four latches (stud) 8A, 8B, 9A, the 9B that are used for encapsulation 2 is inserted on the pedestal 6.Thereby, phase-ground rheostat PT with mutually-most preferably at first being connected respectively on latch 8A, the 8B of neutral line rheostat PN, next is connected on latch 9A, the 9B.
In addition, pedestal 6 preferably is equipped with the housing 10 that is provided for holding encapsulation 2, and its bottom 10A is provided with four opening 8 ' A, 8 ' B, 9 ' A, the 9 ' B that is particularly suitable for holding respectively latch 8A, 8B, 9A, 9B.
Particularly preferably, the interchangeable box 11 of encapsulation 2 formations that has its insertion/extracting apparatus 7.Therefore, when phase-ground rheostat PT or phase-neutral line rheostat PN degenerated and opens circuit, the user can extract box 11 from pedestal 6, so that it is changed.This operation is because there is single connection in box 11 between mutually and especially easily and reasonable with to be protected.
Now with reference to Fig. 4 and Fig. 5 a plurality of embodiment of the present invention is described.
According to the first embodiment of the present invention shown in Figure 4, protective device 1 is designed to protect single-phase network.In order to realize this point; protective device 1 comprises at least one encapsulation 2 (shown in broken lines in Fig. 4); this encapsulation 2 is equipped with the assembly binomial, this assembly binomial by phase-ground rheostat PT with mutually-neutral line rheostat PN constitutes, described assembly binomial is electrically connected to phase L1 to be protected.As shown in Figure 4, phase-ground rheostat PT is connected electrically between phase L1 to be protected and the ground T, thereby provides protection under common mode, and phase-neutral line rheostat PN is connected between phase L1 and the neutral line N, thereby provides protection under differential mode.
According to the second embodiment of the present invention shown in Figure 5; protective device 1 is designed to provide the protection of three-phase network; and in order to realize this point; it comprises at least three encapsulation 2A, 2B, 2C (shown in broken lines in Fig. 5), and each encapsulation all is equipped with the assembly binomial that is electrically connected to a phase among phase L1 to be protected, L2, the L3.Like this, encapsulation 2A be packaged be connected the first phase L1 to be protected and the phase between the ground-ground rheostat PT and be connected between described phase L1 and the neutral line N mutually-neutral line rheostat PN.
Similarly, encapsulation 2B comprise be connected the second phase L2 to be protected and the phase between the ground-ground rheostat PT and be connected between the second phase L2 and the neutral point N mutually-neutral line rheostat PN.
At last, the 3rd encapsulation 2C comprise be connected third phase L3 to be protected and the phase between the ground-ground rheostat PT and be connected between described third phase L3 and the neutral point N mutually-neutral line rheostat PN.
Usually, protective device 1 according to the present invention can be suitable for protecting the polyphase network with N phase.In this case, protective device 1 preferably includes the encapsulation that quantity equals the quantity N of phase at least, and each encapsulation 2 all is equipped with assembly binomial 3.In this case, protective device 1 be known as " multipole ".
Preferably, protective device 1 comprises that spacer assembly 30, this spacer assembly are arranged between the assembly binomial 3 of two continuous (in other words, adjacent one another are) at it when multipole, so that they are electrically isolated from one.This spacer assembly 30 avoids thus between two continuous and contiguous assembly binomials 3 because the short circuit that they may form to the connection of active conductor (particularly the phase L1 of different potentials, L2, L3).Because the existence of spacer assembly 30 makes that assembly binomial 3 can be close to each other, therefore can reduce the overall dimension of device, avoid simultaneously between two continuous assembly binomials 3, forming short circuit.
Preferably, spacer assembly 30 is formed by the barrier of being made by insulating material (screen) that is inserted between two continuous assembly binomials 3.Spacer assembly 30 (particularly, isolation barrier) is preferably designed to be and its size is confirmed as making the isolation distance between two continuous assembly binomials 3 to increase, thereby prevent between these assembly binomials, to form electric arc, keep the little spacing (less than isolation distance) between the assembly binomial 3 simultaneously, thus the size of restraint device.
Expression in this specification " isolation distance " is meant the minimum range that electric arc is advanced in the gas dielectric media (for example air) of barrier assembly binomial 3.The existence of spacer assembly 30 (isolation barrier particularly) can increase isolation distance by forcing electric arc to get around them.
For the neutral line to ground connectivity scenario is not the network of IT (neutral line is isolated or blocking-up with ground) type; protective device 1 can comprise the so-called neutral line-ground rheostat NT that is arranged between the neutral line and the ground; described rheostat is installed among the additional encapsulation 2S, as shown in Figure 4 and Figure 5.Additional encapsulation 2S can be set to hold single rheostat specially, and is perhaps can be in all respects all similar with encapsulation 2, except it will only hold the single neutral line-ground rheostat NT as shown in Figure 4 and Figure 5.In this case, with some the encapsulation 2V that does not use among the additional encapsulation 2S.
Obviously; for the neutral line that is adopted to ground connectivity scenario is the network of IT (the blocking-up neutral line or isolate with ground) type; neededly only cancel or extract (under the situation that can extract type) additional encapsulation 2S; thereby; protective device 1 includes only single encapsulation 2 under the situation of single-phase network, and includes only three encapsulation 2A, 2B, 2C under the situation of three-phase network.
Therefore, protective device 1 according to the present invention is favourable compactness, has no more than two encapsulation 2,2S when single-phase, and have no more than four encapsulation 2A, 2B, 2C, 2D at three phase times.In addition; because protective device 1 only comprises single encapsulation 2,2A, 2B, 2C (or motor) for each active conductor; thereby the operation to the type extracted of this device is easy especially, and the user can be associated phase L1 to be protected, L2 or L3 intuitively with single corresponding box 11.
Under the situation of the polyphase network that comprises a large amount of active conductors, this one side of the present invention is attractive especially.Therefore, along with the increase of the quantity of active conductor, and compare according to one type of prior art syringe, protective device 1 according to the present invention is more favourable aspect size and ease for use.
If protective device 1 comprise a plurality of interchangeable boxes 11 (each box 11 all with phase L1, L2 to be protected or L3 is relevant or relevant with neutral point N); then pedestal 6 (shown in broken lines in Fig. 4 and Fig. 5) can comprise a plurality of housings; each housing holds a box 11; perhaps can comprise single housing, this single housing is set to hold all above-mentioned boxes 11.
As shown in Figure 4 and Figure 5, each phase-ground rheostat PT, each phase-neutral line rheostat PN and each neutral line-ground rheostat NT is connected to network by arrangements of electric connection 15, utilizes other arrangements of electric connection 16 to carry out and being electrically connected of ground.Arrangements of electric connection 15,16 is a wire-connecting device preferably and traditionally.
Preferably, each phase-ground rheostat PT comprises the so-called phase terminal that is electrically connected to phase L1 to be protected, L2, L3
p, and the so-called ground terminal that is electrically connected to ground T
t
Similarly, each phase-neutral line rheostat PN comprises the so-called phase terminal that is electrically connected to phase L1 to be protected, L2 or L3
p, and the so-called neutral line terminal that is electrically connected to neutral line N
nAs shown in Figure 4 and Figure 5, phase-ground rheostat PT with mutually-neutral line rheostat PN is set in encapsulation 2,2A, 2B, 2C adjacent one another are.Neutral line terminal
nAnd ground terminal
tNot at identical current potential, thereby if they lean on too closely each other, then may be described
n,
tForm electric arc between the terminal, thereby make protective device 1 short circuit.
For fear of this phenomenon, protective device 1 preferably includes electric insulation arrangement 20, and this electric insulation arrangement is suitable for making the ground terminal
tWith neutral line terminal
nElectricity is isolated, and preferably is arranged on encapsulation 2,2A, 2B, 2C inside.Electric insulation arrangement 20 preferably is positioned and is set at described ground terminal
tWith described neutral line terminal
nBetween form isolation barrier.
As schematic and indefiniteness example, electric insulation arrangement 20 can be by being inserted in the ground terminal
tWith neutral line terminal
nBetween electricity isolate separator 21 and form, thereby guarantee described ground terminal
tWith described neutral line terminal
nBetween electric insulation.
Preferably, electric insulation arrangement 20 is designed to and size is confirmed as making the ground terminal
tWith neutral line terminal
nBetween isolation distance increase so that isolation distance is greater than separating described ground terminal
tWith described neutral line terminal
nThe physical separation distance.
Therefore, electric insulation arrangement 20 is used to shorten neutral line terminal
nWith the ground terminal
tBetween separation distance, thereby reduce device size, guarantee the electric insulation of terminal simultaneously, and increase neutral line terminal
nAnd earth terminal
tBetween isolation distance, in other words, increase electric arc at described neutral line terminal
nWith the ground terminal
tBetween the length in the path of advancing in order to get around electric insulation arrangement 20.
For example, separator 21 can extend in enough just zones, to guarantee the ground terminal
tWith neutral line terminal
nBetween insulation.
Preferably, as shown in Figure 1, separator 21 will preferably be arranged on encapsulation 2 inside, thereby encapsulation is separated into two housings 22,23, these two housings are roughly symmetrical with respect to separator 21, and each housing 22,23 can both hold the rheostat that is equipped with its tripper.More preferably, as depicted in figs. 1 and 2, separator 21 can extend to encapsulation 2 outsides, with will be relevant with phase-ground rheostat PT this to latch 8A, 8B and with phase-neutral line rheostat PN relevant this latch 9A, 9B branch is opened.
In this case, pedestal 6 will preferably include central housing 60, and this central authorities' housing is particularly suitable for encapsulating the 2 overhanging ends that hold separator 21 when being inserted in the pedestal 6.
Particularly, this structure can prevent to be connected respectively to the ground terminal when inserting
tWith neutral line terminal
nLatch 8A, the 9A of different potentials between form electric arc.
According to a preferred alternative embodiment of the present invention, the phase in same assembly binomial 3-ground rheostat PT with mutually-neutral line rheostat PN has the operating voltage that differs from one another.Preferably, phase-neutral line rheostat PN has the little operating voltage of operating voltage than phase-ground rheostat PT, thereby at first can reduce the protection level of lightning arrester, secondly can make electric binomial compact more.Therefore, as exemplary and indefiniteness example, the operating voltage that phase-ground rheostat PT can have 440 volts of magnitudes with opposing as the voltage between the desired phase of French Standard (being 400 volts magnitude), phase-neutral line rheostat PN have 275 volts of magnitudes than low-work voltage.Therefore, but in the situation of the protective device 1 of pull-out, each box 11 preferably has the rheostat of a pair of different value, and can not produce any confusion in user's impression, and this is because each active conductor all keeps being associated with single box 11.
The invention still further relates to a kind of method of making overvoltage protection 1, this device is suitable for providing protection under common mode and differential mode, said method comprising the steps of:
A) make at least one electric insulation package 2;
B) make at least one electric binomial; it comprise phase-ground rheostat PT with mutually-neutral line rheostat PN; described phase-ground rheostat PT will be arranged between first phase L1 to be protected and the ground T, and described phase-neutral line rheostat PN will be arranged between the described first phase L1 and neutral line N to be protected.
According to the present invention, described method is further comprising the steps of:
C) described encapsulation 2 is arranged so that especially described electric binomial can be fitted into them;
D) described two rheostat PT, PN are associated with in the assembly binomial 3, and they are installed in the encapsulation 2 side by side.
Preferably, this method also comprises following step, and in this step, described encapsulation 2 is equipped with insertion/extracting apparatus 7, so that in the mode of detachable encapsulation described encapsulation 2 is connected on the fixing pedestal 6.
Particularly preferably, phase-ground rheostat PT comprises the phase terminal that is electrically connected to phase L1 to be protected, L2 or L3
pAnd the so-called ground terminal that is electrically connected to ground T
t, and phase-neutral line rheostat PN comprises and is electrically connected to described phase L1, L2 to be protected or the so-called phase terminal of L3
pAnd the so-called neutral line terminal that is electrically connected to the neutral line
n, and described method also comprise with electric insulation arrangement 20 be arranged on ground terminal
tWith neutral line terminal
nBetween step.
This method also preferably includes following steps:
E) make the so-called neutral line-ground rheostat NT, this rheostat will be arranged between described neutral line N and the described ground T;
F) preferably the described neutral line-ground rheostat NT is installed among the additional encapsulation 2S in the mode that can extract.
The present invention can reduce the size of common mode/differential mode type protective device 1 thus significantly, thereby subtracts Little its size is guaranteed the electric insulation between the parts with different potentials of this device simultaneously.
Another advantage of the present invention is that it makes it possible to extract easily and intuitively discarded protection Parts are to change it.
Another advantage according to protective device 1 of the present invention is, no matter the neutral conductor is to the connection on ground How scheme can use this protective device.
Another advantage of the present invention is, compares with the device according to prior art, according to the present invention Protective device 1 need less parts (especially motor), but can carry out identical function. Cause This, the solution that the present invention proposes is more more economical than existing solution.
Another advantage of the present invention is, particularly by systematically using bi-motor, helps to make Manufacture method according to protective device 1 of the present invention is rationalized.
Possible commercial Application
A commercial Application of the present invention is design and makes the instantaneous overvoltage protective device.
Claims (16)
1; a kind of overvoltage protection (1); this overvoltage protection is suitable for providing protection under common mode and differential mode; and comprise at least one electric insulation package (2); this encapsulation is particularly suitable for holding at least one by being arranged on mutually so-called-ground rheostat (PT) with phase terminal (p) and ground terminal (t) between first phase (L1) to be protected and ground (T) and the electric binomial that is arranged on the so-called phase with phase terminal (p) and neutral line terminal (n)-neutral line rheostat (PN) formation between described first phase (L1) to be protected and the neutral line (N); described phase-ground (PT) rheostat is mounted adjacent one another in described encapsulation (2) with mutually described-neutral line (PN) rheostat; thereby constituent components binomial (3); described overvoltage protection is characterised in that; described protective device (1) comprises electric insulation arrangement (20), and this electric insulation arrangement is suitable for making described phase-ground (PT) rheostatic ground terminal (t) to isolate with the rheostatic neutral line terminal of mutually described-neutral line (PN) (n) electricity.
2, device according to claim 1, this device is characterised in that, described electric insulation arrangement (20) is designed to and size is confirmed as making the isolation distance between described ground terminal (t) and the described neutral line terminal (n) to increase, so that this isolation distance is greater than the separation distance that separates described ground terminal (t) and described neutral line terminal (n).
3, device according to claim 1 and 2, this device is characterised in that, described electric insulation arrangement (20) is formed by the electricity isolation separator (21) that is inserted between described ground terminal (t) and the described neutral line terminal (n), thereby guarantees the electric insulation between described ground terminal (t) and the described neutral line terminal (n).
4, device according to claim 3, this device is characterised in that, described separator (21) is arranged on described encapsulation (2) inside, thereby described encapsulation is divided into two housings (22,23), and each housing in these two housings can both hold rheostat.
5, according to a described device in the claim 1 to 4, this device is characterised in that, this device comprises fixing pedestal (6) at least, and each encapsulation (2) all is equipped with insertion/extracting apparatus (7), and this insertion/extracting apparatus can form with respect to a plurality of latches (8A, 8B, 9A, 9B) that described pedestal (6) removably are electrically connected described encapsulation (2) by being adapted such that.
6, device according to claim 5, this device are characterised in that, are equipped with the encapsulation (2) of its insertion/extracting apparatus (7) to form interchangeable box (11).
7, according to claim 4 and 5 described devices, this device is characterised in that, described separator (21) extends to described encapsulation (2) outside, thereby will separate with described a pair of latch (8A, 8B) that described phase-ground rheostat (PT) is relevant with described a pair of latch (9A, 9B) that described phase-neutral line rheostat (PN) is relevant.
8, device according to claim 7, this device are characterised in that described pedestal (6) comprises central housing (60), and this central authorities' housing is particularly suitable for holding the overhanging end of separator (21).
9, according to a described device in the claim 1 to 8; this device is characterised in that; this device is designed to protect single-phase network, and this device comprises the encapsulation (2) that at least one is equipped with the assembly binomial (3) that is electrically connected to described phase (L1) to be protected.
10, according to a described device in the claim 1 to 9; this device is characterised in that; this device is designed to protect three-phase network; and this device comprises at least three encapsulation (2A, 2B, 2C), and each encapsulation all is equipped with the assembly binomial (3) that is electrically connected to phase to be protected (L1, L2, L3).
11, according to a described device in the claim 1 to 9; this device is characterised in that; this device is designed to protect the polyphase network that comprises the N phase, and this device comprises that quantity equals the encapsulation of number of phases N (2) at least, and each encapsulation (2) all is equipped with assembly binomial (3).
12, according to claim 10 or 11 described devices, this device is characterised in that, this device comprises and being arranged between two continuous assembly binomials (3) so that their spacer assemblys electrically isolated from one (30).
13, device according to claim 12, this device are characterised in that described spacer assembly (30) forms by being inserted in two barriers of being made by electrical insulating material between the continuous assembly binomial (3).
14, according to a described device in the claim 1 to 13, this device is characterised in that, this device also comprises the so-called neutral line-ground rheostat (NT) that is arranged between the neutral line (N) and the ground (T), and the described neutral line-ground rheostat (NT) is installed in the additional encapsulation (2S).
15, according to a described device in the aforementioned claim, this device is characterised in that, described phase-ground rheostat (PT) has different operating voltages with described phase-neutral line rheostat (PN) in the same assembly binomial (3).
16, device according to claim 15, this device be characterised in that, in a specific assembly binomial (3), the operating voltage of described phase-neutral line rheostat (PN) is lower than the operating voltage of described phase-ground rheostat (PT).
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| FR0402367 | 2004-03-05 | ||
| FR0402367A FR2867318B1 (en) | 2004-03-05 | 2004-03-05 | DEVICE FOR PROTECTING AGAINST DIFFERENTIAL COMMON MODE OVERTENTIONS OF REDUCED DIMENSION |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN1930642A true CN1930642A (en) | 2007-03-14 |
Family
ID=34855112
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNA2005800071133A Pending CN1930642A (en) | 2004-03-05 | 2005-03-04 | Overvoltage protection device in common/differential mode of reduced size |
Country Status (7)
| Country | Link |
|---|---|
| EP (1) | EP1726019B1 (en) |
| CN (1) | CN1930642A (en) |
| BR (1) | BRPI0509002A (en) |
| FR (1) | FR2867318B1 (en) |
| MX (1) | MXPA06010057A (en) |
| RU (1) | RU2006135132A (en) |
| WO (1) | WO2005086182A1 (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2020144081A1 (en) * | 2019-01-11 | 2020-07-16 | Shpi Gmbh | Universal multifunctional device |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2761543B1 (en) * | 1997-03-25 | 1999-06-04 | Citel | PROTECTION DEVICE FOR A LOW-VOLTAGE ELECTRIC CIRCUIT, MODULE FOR SUCH A PROTECTION DEVICE, AND CIRCUIT FOR THE MODULE |
| FR2783365B1 (en) * | 1998-09-15 | 2000-12-01 | Soule Materiel Electr | DEVICE FOR PROTECTING ELECTRICAL INSTALLATIONS AGAINST INTERFERENCE WITH THE POWER SUPPLY |
-
2004
- 2004-03-05 FR FR0402367A patent/FR2867318B1/en not_active Expired - Fee Related
-
2005
- 2005-03-04 BR BRPI0509002-4A patent/BRPI0509002A/en not_active Application Discontinuation
- 2005-03-04 CN CNA2005800071133A patent/CN1930642A/en active Pending
- 2005-03-04 MX MXPA06010057A patent/MXPA06010057A/en not_active Application Discontinuation
- 2005-03-04 WO PCT/FR2005/000524 patent/WO2005086182A1/en active Application Filing
- 2005-03-04 RU RU2006135132/09A patent/RU2006135132A/en not_active Application Discontinuation
- 2005-03-04 EP EP05736977A patent/EP1726019B1/en not_active Not-in-force
Also Published As
| Publication number | Publication date |
|---|---|
| FR2867318A1 (en) | 2005-09-09 |
| FR2867318B1 (en) | 2007-05-11 |
| MXPA06010057A (en) | 2006-12-15 |
| EP1726019A1 (en) | 2006-11-29 |
| EP1726019B1 (en) | 2012-08-15 |
| RU2006135132A (en) | 2008-04-10 |
| BRPI0509002A (en) | 2007-08-07 |
| WO2005086182A1 (en) | 2005-09-15 |
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| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |