BE647635A - - Google Patents
Info
- Publication number
- BE647635A BE647635A BE647635DA BE647635A BE 647635 A BE647635 A BE 647635A BE 647635D A BE647635D A BE 647635DA BE 647635 A BE647635 A BE 647635A
- Authority
- BE
- Belgium
- Prior art keywords
- emi
- network
- earth
- link
- circuit
- Prior art date
Links
- 230000007935 neutral effect Effects 0.000 claims description 8
- 241000238876 Acari Species 0.000 claims 1
- 230000003042 antagnostic effect Effects 0.000 claims 1
- 238000000034 method Methods 0.000 claims 1
- 238000004804 winding Methods 0.000 claims 1
- 238000009413 insulation Methods 0.000 description 5
- 230000000712 assembly Effects 0.000 description 2
- 238000000429 assembly Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000001514 detection method Methods 0.000 description 1
- 230000004907 flux Effects 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012544 monitoring process Methods 0.000 description 1
Classifications
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02H—EMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS
- H02H3/00—Emergency protective circuit arrangements for automatic disconnection directly responsive to an undesired change from normal electric working condition with or without subsequent reconnection ; integrated protection
- H02H3/16—Emergency protective circuit arrangements for automatic disconnection directly responsive to an undesired change from normal electric working condition with or without subsequent reconnection ; integrated protection responsive to fault current to earth, frame or mass
- H02H3/162—Emergency protective circuit arrangements for automatic disconnection directly responsive to an undesired change from normal electric working condition with or without subsequent reconnection ; integrated protection responsive to fault current to earth, frame or mass for AC systems
- H02H3/165—Emergency protective circuit arrangements for automatic disconnection directly responsive to an undesired change from normal electric working condition with or without subsequent reconnection ; integrated protection responsive to fault current to earth, frame or mass for AC systems for three-phase systems
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R27/00—Arrangements for measuring resistance, reactance, impedance, or electric characteristics derived therefrom
- G01R27/02—Measuring real or complex resistance, reactance, impedance, or other two-pole characteristics derived therefrom, e.g. time constant
- G01R27/16—Measuring impedance of element or network through which a current is passing from another source, e.g. cable, power line
- G01R27/18—Measuring resistance to earth, i.e. line to ground
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Testing Of Short-Circuits, Discontinuities, Leakage, Or Incorrect Line Connections (AREA)
- Emergency Protection Circuit Devices (AREA)
Description
<EMI ID=1.1>
alternatif*
<EMI ID=2.1>
élevée à laquelle vient et superposer la tension alternative
propre du réseau* <EMI ID=3.1>
rise essentiellement par le fait qu'il consiste à utiliser le dispositif de mesure d'isolement ou de détection de de*' faute d'isolement habituel pour surveiller le courant qui
<EMI ID=4.1>
l'un de ces circuits étant constitué par une liaison résis- tante entre la terre et un point commun lui-même relié aux
<EMI ID=5.1>
cuit étant constitué par une liaison résistante entre un point neutre du réseau et la terre.
Suivant une autre caractéristique, on règle
<EMI ID=6.1>
continue de charge des capacités du réseau
Suivant une autre caractéristique applicable :
<EMI ID=7.1>
<EMI ID=8.1>
coupure général du réseau surveillé" on utilise un relais
<EMI ID=9.1>
chacun est monté dans un des circuits parallèles de ladite liaison réseau-terre,
<EMI ID=10.1>
- un premier circuit entre terre et réseau comprenant une liaison résistante entre la terre et un point commun lui-même relié à chacune des phases du réseau par l'intermédiaire de liaisons polarisées ; .. un deuxième circuit entre terre et réseau comprenant une liaison résistante entre un point neutre du réseau et un point du premier circuit situé entre la résistance et la terre et
- un dispositif classique permettant de menu- <EMI ID=11.1>
dans la liaison réseau-terre constituée des deux circuits précités.
Suivant une autre caractéristique de l'invention applicable dans le cas ou la liaison réseau-terre doit
<EMI ID=12.1>
positif de coupure général du réseau, on utilise un relais à deux bobinages identiques dont l'un est inséré dans la
<EMI ID=13.1>
le deuxième circuit de façon que le courant circulant, lorsqu'il n'y a pas de défaut à la terre entre le point commun du premier circuit et le point neutre du deuxième circuit provoque un flux résultant nul dans les bobinages du relais
D'autres caractéristiques} avantages et par-
<EMI ID=14.1> La figure 1 est un schéma de montage possible <EMI ID=15.1>
le contrôle d'isolement par rapport à la terre d'un réseau alternatif triphasé à neutre isolé.
La figure 2 est le schéma d'une variante de montage possible dans le cas d'utilisation d'un relais de déclenchement.
Sur la figure 1, la référence 1 désigne le
(secondaire du transformateur de puissance d'alimentation du réseau triphasé 2 à neutre isolé qui est à surveiller*
Conformément à l'invention, cette surveillance est assurée par l'intermédiaire d'une liaison roseau-terre très caractéristique qui eet désignée par la référence gênéraie 3"
D'une façon plus particulière, cette liaison
<EMI ID=16.1>
un dispositif d'alarme schématisé en 8, lorsque s'écoule un courant polarisé entre réseau et terre en cas de défaut d'isolement du réseau par rapport à la terre.
<EMI ID=17.1> <EMI ID=18.1>
<EMI ID=19.1>
<EMI ID=20.1>
<EMI ID=21.1>
donnée par la formule
<EMI ID=22.1>
<EMI ID=23.1>
<EMI ID=24.1>
commune avec le premier montage de la figure 1 on $tout contenté d'utiliser sur la figure 2 les mêmes références
<EMI ID=25.1>
terre et permet de mesurer la valeur d'isolement du réseau par rapport à la terre.
<EMI ID=26.1>
Pour Ion mêmes rainons qui ont été exposées au
<EMI ID=27.1>
terre sera donnée par la formule
<EMI ID=28.1>
et que, comme dans le cas précédent, il sera possible de
<EMI ID=29.1>
et représentée qu'à titre purement explicatif et nullement limitatif et qu'on pourra y apporter des Modifications de détail conformes à son esprit nana sortir du cadre de ladite invention"
C'est ainsi, en particulier, que les deux montages donnée à titre d'exemple ou d'autres présentant des caractéristiques analogues pourront recevoir divorcée applications dans des montages plue complexes*
<EMI ID = 1.1>
alternative*
<EMI ID = 2.1>
high to which comes and superimpose the alternating voltage
network specific * <EMI ID = 3.1>
mainly due to the fact that it consists in using the usual insulation measurement or insulation fault detection device to monitor the current which
<EMI ID = 4.1>
one of these circuits being constituted by a resistant link between the earth and a common point which is itself connected to the
<EMI ID = 5.1>
fired being formed by a resistant link between a neutral point of the network and the earth.
According to another characteristic, we adjust
<EMI ID = 6.1>
continuous load of network capacities
According to another applicable characteristic:
<EMI ID = 7.1>
<EMI ID = 8.1>
general shutdown of the monitored network "a relay is used
<EMI ID = 9.1>
each is mounted in one of the parallel circuits of said network-earth link,
<EMI ID = 10.1>
a first circuit between earth and network comprising a resistive link between earth and a common point which is itself connected to each of the phases of the network by means of polarized links; .. a second circuit between earth and network comprising a resistive link between a neutral point of the network and a point of the first circuit located between the resistance and the earth and
- a classic device allowing menu- <EMI ID = 11.1>
in the network-earth link made up of the two aforementioned circuits.
According to another characteristic of the invention applicable in the case where the network-earth link must
<EMI ID = 12.1>
positive general cut-off of the network, a relay with two identical coils, one of which is inserted in the
<EMI ID = 13.1>
the second circuit so that the current flowing, when there is no earth fault between the common point of the first circuit and the neutral point of the second circuit, causes a resulting zero flux in the coils of the relay
Other features} advantages and per-
<EMI ID = 14.1> Figure 1 is a possible circuit diagram <EMI ID = 15.1>
the insulation check with respect to the earth of a three-phase AC network with isolated neutral.
FIG. 2 is the diagram of a possible assembly variant in the case of using a trip relay.
In Figure 1, reference 1 designates the
(secondary of the power transformer of the three-phase network 2 with isolated neutral which is to be monitored *
In accordance with the invention, this monitoring is provided by means of a very characteristic reed-earth link which is designated by the reference gênerie 3 "
In a more particular way, this binding
<EMI ID = 16.1>
an alarm device shown schematically at 8, when a polarized current flows between the network and earth in the event of an insulation fault in the network with respect to the earth.
<EMI ID = 17.1> <EMI ID = 18.1>
<EMI ID = 19.1>
<EMI ID = 20.1>
<EMI ID = 21.1>
given by the formula
<EMI ID = 22.1>
<EMI ID = 23.1>
<EMI ID = 24.1>
common with the first assembly of figure 1 we are content to use in figure 2 the same references
<EMI ID = 25.1>
earth and makes it possible to measure the insulation value of the network with respect to the earth.
<EMI ID = 26.1>
For Ion same rainons which were exhibited at
<EMI ID = 27.1>
land will be given by the formula
<EMI ID = 28.1>
and that, as in the previous case, it will be possible to
<EMI ID = 29.1>
and shown for purely explanatory and in no way limiting and that modifications of detail in accordance with its nana spirit could be made to it outside the scope of said invention "
It is in this way, in particular, that the two assemblies given by way of example or others having similar characteristics can receive divorced applications in more complex assemblies *
Claims (1)
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| FR934462A FR1372466A (en) | 1963-05-10 | 1963-05-10 | Improved method and device for controlling the insulation from the earth of an AC electrical network |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| BE647635A true BE647635A (en) | 1964-11-09 |
Family
ID=8803598
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| BE647635D BE647635A (en) | 1963-05-10 | 1964-05-08 |
Country Status (3)
| Country | Link |
|---|---|
| BE (1) | BE647635A (en) |
| DE (1) | DE1463016B1 (en) |
| FR (1) | FR1372466A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0730161A3 (en) * | 1995-03-01 | 1998-03-11 | GOSSEN-METRAWATT Gesellschaft mit beschränkter Haftung | Method and device for testing the protection arrangements of a real star-delta network |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2454207A1 (en) * | 1979-04-10 | 1980-11-07 | Parrier Henri | Safety circuit for electrical machinery - employs diode bridges to detect anomalies and drive amplifier controlled cut=outs |
| US4589048A (en) * | 1983-03-23 | 1986-05-13 | Mitsubishi Denki Kabushiki Kaisha | Apparatus for detecting ground fault in variable-voltage variable-frequency power system |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE939462C (en) * | 1942-03-05 | 1956-05-03 | Siemens Ag | Device for protection against dangerous contact voltages in the event of an earth conductor break in AC systems for mining and underground operations |
| DE971635C (en) * | 1948-10-02 | 1959-03-05 | Walther Dipl-Ing Bender | Device for monitoring three-phase systems for ohmic conductors |
| DE1704101C3 (en) * | 1967-07-12 | 1974-09-26 | Fr. Hesser Maschinenfabrik Ag, 7000 Stuttgart | Shaping mandrel for a machine for producing bags or similar packaging containers from packaging materials that can be heat-sealed on at least one side |
-
1963
- 1963-05-10 FR FR934462A patent/FR1372466A/en not_active Expired
-
1964
- 1964-05-06 DE DE19641463016 patent/DE1463016B1/en active Pending
- 1964-05-08 BE BE647635D patent/BE647635A/fr unknown
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0730161A3 (en) * | 1995-03-01 | 1998-03-11 | GOSSEN-METRAWATT Gesellschaft mit beschränkter Haftung | Method and device for testing the protection arrangements of a real star-delta network |
Also Published As
| Publication number | Publication date |
|---|---|
| DE1463016B1 (en) | 1970-07-02 |
| FR1372466A (en) | 1964-09-18 |
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