FR2548839A1 - Control and/or monitoring installation comprising a device for protecting consumers of power, and for the supply line to these consumers - Google Patents
Control and/or monitoring installation comprising a device for protecting consumers of power, and for the supply line to these consumers Download PDFInfo
- Publication number
- FR2548839A1 FR2548839A1 FR8311782A FR8311782A FR2548839A1 FR 2548839 A1 FR2548839 A1 FR 2548839A1 FR 8311782 A FR8311782 A FR 8311782A FR 8311782 A FR8311782 A FR 8311782A FR 2548839 A1 FR2548839 A1 FR 2548839A1
- Authority
- FR
- France
- Prior art keywords
- transistor
- zener diode
- control
- collector
- supply
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
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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
- H02H3/08—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 excess current
- H02H3/087—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 excess current for dc applications
-
- 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
- H02H3/20—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 excess voltage
- H02H3/202—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 excess voltage for dc systems
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- Emergency Protection Circuit Devices (AREA)
- Direct Current Feeding And Distribution (AREA)
Abstract
Description
Dispositif pour la protection de consommateurs d'énergie et de la ligne d'alimentation de ces consommateurs.Device for protecting energy consumers and the supply line of these consumers.
La présente invention concerne des installations de commande et/ou de contrôle de récepteurs ou organes périphériques connectés à une même alimentation générale. The present invention relates to installations for controlling and / or controlling receivers or peripheral organs connected to the same general supply.
Il est nécessaire de protéger l'alimentation générale des courts-circuits qui peuvent se produire dans les récepteurs. On peut prévoir à cet effet des fusibles disposés en amont des récepteurs. Mais on est obligé de procder à l'échange dn fusible lorsque la cause d court-circuit a disparu Il existe également d'autres dispositifs de protection. Mais ceux-ci ont pour effet d'interdire le fonctionnement d'un o@ plusieurs autres récepteurs et/ou affectent l'alimentation cantrale; de plus, ils n'assurent pas une portection contre des tensions positives supérieures à la tension normale de l'alimentation centrale. It is necessary to protect the general power supply from short circuits which may occur in the receivers. Fuses arranged upstream of the receivers can be provided for this purpose. However, the fuse must be replaced when the cause of the short circuit has disappeared. There are also other protection devices. But these have the effect of prohibiting the operation of one or more other receptors and / or affect cantonal power; moreover, they do not provide a portection against positive voltages greater than the normal voltage of the central supply.
La présente invention a pour objet une installation du type cidessus dans laquelle les @écepteurs ou organes périphériques sont protégés des surtensions sur l'installation; par ailleurs, les récepteurs et l'installation sont protégés des effets d'un courtcircuit se produisant éventuellement dans l'un des récepteurs.The present invention relates to an installation of the above type in which the receivers or peripheral members are protected from overvoltages on the installation; moreover, the receivers and the installation are protected from the effects of a short circuit possibly occurring in one of the receivers.
L'installation selon l'invention est caractérisée en ce que chacun des récepteurs ou organes périphériques est connecté à l'alimentation centrale par un dispositif de protection qui lui est propre et comprend un transistor de commande interposé entre l'alimentation et le récepteur, une diode Zener connectée à l'alimentation, des moyens commandés par cette diode Zener pour bloquer le transistor de commande quand la tension d'alimentation devient supérieure à la tension de seuil de la diode Zener et des moyens ponr bloquer le transistor de commande quand le collecteur de celui-ci est mis à la masse. The installation according to the invention is characterized in that each of the receivers or peripheral organs is connected to the central supply by a protection device which is specific to it and comprises a control transistor interposed between the supply and the receiver, a Zener diode connected to the power supply, means controlled by this Zener diode to block the control transistor when the supply voltage becomes higher than the threshold voltage of the Zener diode and means ponr block the control transistor when the collector of it is grounded.
Les moyens commandés par la iode Zener pour bloquer le transistor de commande peuvent comprendre un premier transistor dont la base est connectée à la diode Zener, et un second transistor dont la base est connectée an collecteur du premier transistor et qui est interposé entre la base du transistor de commande et la masse. The means controlled by the Zener iodine to block the control transistor may include a first transistor whose base is connected to the Zener diode, and a second transistor whose base is connected to the collector of the first transistor and which is interposed between the base of the control transistor and ground.
Quand la diode Zener devient passante, le premier transistor change d'état de sorte que le second transistor change également d'état e que la tension à la base du transistor de commande prend une valeur qui assure le blocage de ce dernier transistor. When the Zener diode turns on, the first transistor changes state so that the second transistor also changes state e that the voltage at the base of the control transistor takes a value which ensures the blocking of the latter transistor.
Dans un mode de réalisation particulier de 1'invention, le transistor de commande est du type p-n-p alors que les deux autres transistors sont du type n-p-n et ont leurs collecteurs connectes à l'entrée par des résistances de polarisation. In a particular embodiment of the invention, the control transistor is of the p-n-p type while the other two transistors are of the n-p-n type and have their collectors connected to the input by bias resistors.
Quand la diode Zener n'est pas passante, le premier transistor est bloqué alors que le second transistor ayant alors sa base à la tension positive d'alimentation est conducteur; le transistor de commande ayant, dans ces conditions, sa base à la masse est conducteur. Inversement, quand la tension d'alimentation devient supérieure à la tension de seuil de la diode Zener, le premier transistor devient passant, le second transistor dont la base est connectée à la masse se bloque, et le transistor de commande ayant sa base isolée de la masse et connectée à la source positive d'alimentation se bloque. When the Zener diode is not conducting, the first transistor is blocked while the second transistor then having its base at the positive supply voltage is conductive; the control transistor having, under these conditions, its base to ground is conductive. Conversely, when the supply voltage becomes higher than the threshold voltage of the Zener diode, the first transistor becomes conducting, the second transistor whose base is connected to ground is blocked, and the control transistor having its base isolated from ground and connected to the positive power source is blocked.
Dans ce mode de réalisation, les moyens pour bloquer le transistor de commande quand le collecteur de celui-ci est à la masse peuvent être constitués par une diode connectée entre ledit collecteur et la base du deuxième transistor. Lorsque le récepteur est en court-circuit, la base du deuxième transistor est mise à la masse, de sorte qu'il se bloque en assurant le blocage du transistor de commande. In this embodiment, the means for blocking the control transistor when the collector thereof is grounded can be constituted by a diode connected between said collector and the base of the second transistor. When the receiver is short-circuited, the base of the second transistor is grounded, so that it blocks while ensuring the blocking of the control transistor.
Il peut titre prévu une diode Zener dont l'anode est connectée d'une part à la base du second transistor et à la masse par une résistance alors que sa cathode est connectée au collecteur du premier transistor. Cette diode et cette résistance facilitent le blocage du second transistor, donc celui du transistor de commande. A Zener diode may be provided, the anode of which is connected on the one hand to the base of the second transistor and to ground by a resistor while its cathode is connected to the collector of the first transistor. This diode and this resistor facilitate the blocking of the second transistor, therefore that of the control transistor.
On a décrit ci-après, à titre d'exemple non limitatif, un mode de réalisation de l'installation de commande et/ou de contrôle selon l'invention, avec référence à la Figure unique du dessin annexé dans lequel
La Figure l est le schéma général de l'installation;
La Figure 2 est le schéma de l'un des dispositifs de protec
tion.An embodiment of the command and / or control installation according to the invention has been described below, by way of non-limiting example, with reference to the single figure of the appended drawing in which
Figure 1 is the general diagram of the installation;
Figure 2 is the diagram of one of the protective devices
tion.
r
Telle qu'elle est représentée au dessin, l'installation de commande ou de contrôle selon l'invention, comprend un dispositif d'alimentation 1 qui est connecté par un réseau distributeur 2 à des récepteurs ou organes périphériques 3a, 3b et 3c par l'intermédiaire de dispositifs de protection 4. Chacun des dispositifs de protection est relié au réseau 2 par son entrée E et à l'un des organes périphériques par sa sortie S. r
As shown in the drawing, the command or control installation according to the invention comprises a supply device 1 which is connected by a distribution network 2 to receivers or peripheral members 3a, 3b and 3c by the protection devices 4. Each of the protection devices is connected to the network 2 by its input E and to one of the peripheral members by its output S.
Comme on le voit à la Figure 2, chacun des dispositifs de protection 4 comprend un transistor T1 qui est ici du type p-n-p et est intercale entre l'entrée E et la sortie S, son émetteur et son collecteur étant connectés respectivement à cette entrée et à cette sortie. As can be seen in FIG. 2, each of the protection devices 4 comprises a transistor T1 which is here of the pnp type and is interposed between the input E and the output S, its emitter and its collector being connected respectively to this input and at this exit.
La base du transistor T est connectée a la masse par l'intermédiaire d'une résistance de polarisation R1, d'un transistor
T2 qui est ici du type r-p-n, n, et d'une résistance de polarisation
R2; le collecteur du transistor T9 est connecté à la base du transistor T1 par l'intermédiaire de la résistance R1 alors que son émetteur est connecte à la masse par l'intermédiaire de la résis- tance R2. La référence R3 désigne une résistance de polarisation du collecteur du transistor T2. The base of transistor T is connected to ground via a bias resistor R1, a transistor
T2 which is here of the type rpn, n, and of a polarization resistance
R2; the collector of transistor T9 is connected to the base of transistor T1 via resistor R1 while its emitter is connected to ground via resistor R2. The reference R3 designates a bias resistance of the collector of the transistor T2.
La base du transistor T2 est connectée à la masse par une ré- sistance de polarisation R4. Elle est également connectée par l'intermédiaire d'une diode Zener Z1 d'une part à la sortie S par l'intermédiaire d'une diode D et d'autre part à la masse par l'intermédiaire d'un transistor T2 qui est du type n-p-n. The base of transistor T2 is connected to ground by a polarization resistor R4. It is also connected via a Zener diode Z1 on the one hand to the output S via a diode D and on the other hand to earth via a transistor T2 which is of the npn type.
Les diodes Z1 et D sont passantes dans le sens allant de la base du transistor T2 respectivement au transistor T3 et à la sortie S. The diodes Z1 and D are conducting in the direction going from the base of the transistor T2 respectively to the transistor T3 and to the output S.
L'émetteur du transistor T3 est connecté à la masse alors que son collecteur est connecté à la dicde Zener Z1 et à l'entrée E par une résistance de polarisation R5. Sa base est connectée à la masse par une résistance de polarisation R6 et à l'entrée E par une résistance de polarisation R7 et une diode Zener Z2. The emitter of transistor T3 is connected to ground while its collector is connected to the Zener signal Z1 and to input E by a bias resistor R5. Its base is connected to ground by a bias resistor R6 and to the input E by a bias resistor R7 and a Zener diode Z2.
Le fonctionnement du dispositif de protection 4 est le suivant. La tension de seuil de la diode Zener Z2 est déterminée de façon à ttre supérieure a la va1 eur normale de la tension présente en E. Par suite, en temps oral, le transis or T3 et bloqué et le transistor T2 est conducteur, ce qui rend conducteur le transistor T1. La tension de sortie en s est égale à la tension d'entrée présente en E diminuée de la chute de tension dans le transistor
T1.The operation of the protection device 4 is as follows. The threshold voltage of the Zener diode Z2 is determined so as to be greater than the normal value of the voltage present at E. Consequently, in oral time, the gold transis T3 and blocked and the transistor T2 is conductive, which turns transistor T1 on. The output voltage in s is equal to the input voltage present in E minus the voltage drop in the transistor
T1.
Par contre, si la valeur de la tension présente en E devient supérieure à la tension de seuil de la diode Zener Z2, le transistor T3 devient conducteur, ce qui met à la masse la base du tran- sistor T2 et bloque ce transistor. La base du transistor T1 de vient positive et ce transistor se bloque également. La diode Z1 et la résistance R4 facilitent le blocage du transistor T2. La tension présente en S devient nulle. Le dispositif A protège donc contre les surtensions l'organe périphérique auquel il est associé. On the other hand, if the value of the voltage present at E becomes greater than the threshold voltage of the Zener diode Z2, the transistor T3 becomes conductive, which earths the base of the transistor T2 and blocks this transistor. The base of transistor T1 comes positive and this transistor also blocks. The diode Z1 and the resistor R4 facilitate the blocking of the transistor T2. The voltage present in S becomes zero. The device A therefore protects the peripheral member with which it is associated against overvoltages.
D'un autre coté, en cas de co;urt-circuit de l'organe périphérique, le point S est mis à la masse. Par suite, le transistor T2 se bloque et le transistor T1 devient non conducteur. L'organe périphérique est ainsi isolé de I'almentation centrale et le potentiel en E reste au potentiel de cette alimentation. Le dispositif 4 protège donc également l'installation des courts-circuits internes de l'organe périphérique. On the other hand, in the event of a circuit in the peripheral organ, point S is grounded. As a result, the transistor T2 is blocked and the transistor T1 becomes non-conductive. The peripheral organ is thus isolated from the central supply and the E potential remains at the potential of this supply. The device 4 therefore also protects the installation from internal short circuits of the peripheral member.
Il va de soi que la présente invention ne doit pas entre considérée comme limitée au mode de réalisation décrit et représenté, mais en couvre, au contraire, toutes les variantes. It goes without saying that the present invention should not be regarded as being limited to the embodiment described and shown, but on the contrary covers all variants thereof.
Claims (5)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| FR8311782A FR2548839B1 (en) | 1983-07-08 | 1983-07-08 | CONTROL AND / OR CONTROL INSTALLATION COMPRISING A DEVICE FOR THE PROTECTION OF ENERGY CONSUMERS, AND FOR THE SUPPLY LINE OF SUCH CONSUMERS |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| FR8311782A FR2548839B1 (en) | 1983-07-08 | 1983-07-08 | CONTROL AND / OR CONTROL INSTALLATION COMPRISING A DEVICE FOR THE PROTECTION OF ENERGY CONSUMERS, AND FOR THE SUPPLY LINE OF SUCH CONSUMERS |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| FR2548839A1 true FR2548839A1 (en) | 1985-01-11 |
| FR2548839B1 FR2548839B1 (en) | 1986-02-28 |
Family
ID=9290844
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| FR8311782A Expired FR2548839B1 (en) | 1983-07-08 | 1983-07-08 | CONTROL AND / OR CONTROL INSTALLATION COMPRISING A DEVICE FOR THE PROTECTION OF ENERGY CONSUMERS, AND FOR THE SUPPLY LINE OF SUCH CONSUMERS |
Country Status (1)
| Country | Link |
|---|---|
| FR (1) | FR2548839B1 (en) |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2619262A1 (en) * | 1987-08-06 | 1989-02-10 | Crouzet Sa | Device for protecting equipment against overvoltages induced on a line being connected thereto |
| EP0348587A2 (en) * | 1988-06-30 | 1990-01-03 | Auergesellschaft Gmbh | Operating failure monitoring circuitry for an electronic apparatus constituting an integrated circuit |
| EP0349750A1 (en) * | 1988-07-07 | 1990-01-10 | Oerlikon-Knorr Eisenbahntechnik AG | Protection circuit against compensation and overvoltages for electronic equipment |
| FR2634601A1 (en) * | 1988-07-19 | 1990-01-26 | Thomson Csf | Electronic circuit for protection against overvoltages and current surges |
| EP0373712A2 (en) * | 1988-12-15 | 1990-06-20 | Koninklijke Philips Electronics N.V. | Excess voltage protection circuit |
| EP0387108A1 (en) * | 1989-03-10 | 1990-09-12 | Nokia Mobile Phones Ltd. | Eliminating the effects of voltage transients |
| CN101562327A (en) * | 2008-04-17 | 2009-10-21 | 德信智能手机技术（北京）有限公司 | Overvoltage protective device in wireless fixed phone charging mode |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3543091A (en) * | 1968-12-23 | 1970-11-24 | Ltv Aerospace Corp | Solid state circuit breaker |
| US3571608A (en) * | 1969-04-04 | 1971-03-23 | Honeywell Inc | Protective circuit |
| US3585453A (en) * | 1968-06-27 | 1971-06-15 | Nippon Denso Co | Device for protecting electrical load of automotive vehicles |
| US4020395A (en) * | 1975-09-17 | 1977-04-26 | The United States Of America As Represented By The Secretary Of The Army | Transient voltage protection circuit for a DC power supply |
-
1983
- 1983-07-08 FR FR8311782A patent/FR2548839B1/en not_active Expired
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3585453A (en) * | 1968-06-27 | 1971-06-15 | Nippon Denso Co | Device for protecting electrical load of automotive vehicles |
| US3543091A (en) * | 1968-12-23 | 1970-11-24 | Ltv Aerospace Corp | Solid state circuit breaker |
| US3571608A (en) * | 1969-04-04 | 1971-03-23 | Honeywell Inc | Protective circuit |
| US4020395A (en) * | 1975-09-17 | 1977-04-26 | The United States Of America As Represented By The Secretary Of The Army | Transient voltage protection circuit for a DC power supply |
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2619262A1 (en) * | 1987-08-06 | 1989-02-10 | Crouzet Sa | Device for protecting equipment against overvoltages induced on a line being connected thereto |
| EP0348587A2 (en) * | 1988-06-30 | 1990-01-03 | Auergesellschaft Gmbh | Operating failure monitoring circuitry for an electronic apparatus constituting an integrated circuit |
| EP0348587A3 (en) * | 1988-06-30 | 1991-06-12 | Auergesellschaft Gmbh | Operating failure monitoring circuitry for an electronic apparatus constituting an integrated circuit |
| EP0349750A1 (en) * | 1988-07-07 | 1990-01-10 | Oerlikon-Knorr Eisenbahntechnik AG | Protection circuit against compensation and overvoltages for electronic equipment |
| FR2634601A1 (en) * | 1988-07-19 | 1990-01-26 | Thomson Csf | Electronic circuit for protection against overvoltages and current surges |
| EP0373712A2 (en) * | 1988-12-15 | 1990-06-20 | Koninklijke Philips Electronics N.V. | Excess voltage protection circuit |
| EP0373712A3 (en) * | 1988-12-15 | 1991-10-16 | Koninklijke Philips Electronics N.V. | Excess voltage protection circuit |
| EP0387108A1 (en) * | 1989-03-10 | 1990-09-12 | Nokia Mobile Phones Ltd. | Eliminating the effects of voltage transients |
| CN101562327A (en) * | 2008-04-17 | 2009-10-21 | 德信智能手机技术（北京）有限公司 | Overvoltage protective device in wireless fixed phone charging mode |
Also Published As
| Publication number | Publication date |
|---|---|
| FR2548839B1 (en) | 1986-02-28 |
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