RU191571U1 - COMBINED VOLTAGE PROTECTION SYSTEM - Google Patents

Abstract

The utility model relates to a prefabricated surge protection system. The pre-assembled surge protection system includes at least one first signal circuit terminal (K1) to provide a first electrical connection (L1) and a second signal circuit terminal (K2) to provide a second electrical connection (L2), and a plug-in module (USS) for protection surge protection. The first terminal (K1) and the second terminal (K2) are designed to be mounted on a mounting rail (T) in close proximity, with at least the first terminal (K1) having a device for providing electrical contact with the mounting rail (T) for electrical contact with equalizing potential (PE, GND). The plug-in module (USS) for overvoltage protection when plugged in protects the first electrical connection (L1) and the second electrical connection (L2) from overvoltage, and when plugged in, the plug module (USS) is electrically connected to the device (E) to provide electrical contact with the mounting rail (T) provided by at least the first terminal (K1). 1 FIG.

Description

The technical field to which the utility model relates.

This utility model relates to a prefabricated surge protection system.

State of the art

In many areas of technology, electrical signals are wired to a processing unit. Typically, wireline communications are detachable. So, for example, in railway technology, many cables from sensors and alarm systems and automation are reduced to certain switching points for processing there. In this case, the transmission of signals from the outer region to the inner region occurs using the terminals of the signal circuit.

In addition, for safety important systems, it would be desirable to provide surge protection. It is usually necessary to regularly check surge protection devices to see if they still have the necessary protective ability.

In this case, then the problem often arises that it is necessary to remove the protective means from the corresponding signal circuits, so that this does not lead to the breaking of this circuit.

The prior art knows many solutions to this problem.

For example, from German patent publication DE 102014217446 B4, a solution is known according to which it is proposed to equip two signal circuit terminals with an adjacent ground terminal, while overvoltage protection of the signal circuit terminals on the ground terminal is provided by a plug-in module.

In addition, from the German patent application DE 102014218646 A1 owned by the applicant company, a system is known which is composed of two terminals of a signal circuit with an earth terminal between them. There is also a plug-in module, through which overvoltage protection of the signal circuit terminals on the ground terminal is provided.

In addition, a terminal block system is known from the German patent application DE 102014213728, in which an overvoltage protection module discharges an overvoltage arising on the terminal block by means of a tap through the ground terminal.

However, common to all of the above solutions is that they are non-compact and they need a large installation space. Therefore, the solutions that exist until now are unsuitable, in particular when, in a narrow space, for example, with the existing cabling, until that moment, unprotected signal circuits must be understaffed with the safety equipment of the aforementioned type, since this, as a rule, requires half the occupied space than earlier.

In addition, this solution requires high costs, since it is necessary to provide heterogeneous terminals. In addition, during installation, it was necessary to strictly monitor the accuracy of placement, since otherwise the desired safety function is not provided.

Utility Model Disclosure

Therefore, based on this state of affairs in the prior art, there is a need to develop a simple and cost-effective solution that would eliminate at least some of the disadvantages existing in the prior art.

The problem is solved according to the utility model by the features set forth in independent paragraph 1 of the utility model formula. Preferred embodiments of the utility model are given in the dependent claims, a detailed description and illustrated in the drawings.

Brief Description of the Drawings

The following is a detailed description of the utility model by the example of preferred options for its implementation with links to the accompanying drawings, which show

in FIG. 1 is a connection diagram illustrating a layout of embodiments of a utility model;

in FIG. 2 is a perspective view of an embodiment of a utility model;

in FIG. 3 is a connection diagram illustrating a layout of yet another embodiment of a utility model;

in FIG. 4 is a perspective view of another embodiment of a utility model in a first state;

in FIG. 5 is a perspective view of another embodiment of a utility model in a second state;

in FIG. 6 is a detailed image of embodiments of a utility model;

in FIG. 7 is a detailed image of other embodiments of the utility model;

in FIG. 8 is the following connection diagram illustrating the following arrangement of embodiments of the utility model; and

in FIG. 9 is another wiring diagram illustrating yet another arrangement of embodiments of the utility model.

Utility Model Implementation

Below is a more detailed discussion of the utility model with reference to the drawings. It should be noted that various aspects are described, each of which can be used individually or in combination with others. This means that any aspect can be applied with different options for executing a utility model, except when explicitly stated otherwise.

In addition, further description for the sake of simplicity, as a rule, is always carried out only with reference to the object in the singular. However, unless expressly stated otherwise, a utility model may also have several such objects under consideration in each relevant case. In this regard, the use of words in the singular should be understood only as an indication that at least one object is used in a simple embodiment.

In those parts of the following description of the method, the individual steps of the method can be arranged and / or combined in an arbitrary sequence, unless otherwise explicitly derived from the context. In addition, the methods may be combined with each other, unless expressly indicated otherwise.

Information expressed in numerical values, as a rule, should be understood not as exact values, but also as having a tolerance field with coverage from ± 1% to ± 10%.

When reference is made to the names of standards, specifications, or similar regulatory and other official documentation in this description, at least reference is always made to standards, specifications, etc., that were in effect on the priority date. This means that if a standard / specification, etc., is updated or a successor document is issued and is in place, the utility model is also applicable for this new version.

The drawings show a prefabricated surge protection system. It contains at least one first signal circuit terminal K1 for forming a first electrical connection L1 and a second signal circuit terminal K2 for forming a second electrical connection L2.

In addition, the surge protection system includes a USS plug-in module for surge protection. At the same time, the exact circuit layout of the USS plug-in module does not matter for a start.

The first signal circuit terminal K1 and the second signal circuit terminal K2 are configured to be mounted on a mounting rail T in the immediate vicinity. The mounting rail T may be a suitably metallized or metal (steel / copper / aluminum) shaped rail of a suitable shape, for example in the form of a hat-shaped rail or a G-shaped rail. For examples, you can refer to mounting rails that comply with the German national standard DIN EN 60715 (the so-called DIN rails).

At the same time, at least the first terminal K1 of the signal circuit has a device E for providing electrical contact with the mounting rail T, which serves for electrical contact with the equalizing potential BE, PE, GND. In this case, the equalizing potential can be a suitable common reference potential - ground "BE", protective earth PE, common GND terminal for connection to the housing or any other suitable potential.

When in the stuck (second) state, shown, for example, in FIG. 5, the USS surge protection plug-in module protects the first electrical connection L1 and the second electrical connection L2 from overvoltage.

In the plugged-in state of the USS plug-in module for overvoltage protection, the electrical connection of at least the first terminal K1 of the signal circuit to the device E is ensured to ensure electrical contact with the mounting rail T.

This means that at least the first terminal K1 of the signal circuit provides both a connection of the signal circuit L1 from the outer region to the inner region, and a separate path to the mounting rail T. The USS plug-in module for surge protection only when plugged forms the corresponding signal circuit connection L1, respectively, of the signal circuits L1 and L2 to the mounting rail T. This means that in the non-open state (see, for example, Fig. 2 and Fig. 4), although at a suitable sticking location there is the potential of the mounting rail T, given to the terminal block by means of tool E, but then there is no contact anymore.

Thus, this innovative design provides overvoltage protection, and the space required to place the structure on the T-rail is probably exactly the same as before.

In an embodiment of the present utility model, the first signal circuit terminal K1 and the second signal circuit terminal K2 have substantially the same design. This means that providing the same parts makes it possible to reduce production costs and the cost of development work. In addition, it is possible to increase the simplicity and error-free installation, since now there is no need to monitor what type of terminal is attached next to another terminal.

In another embodiment of the present utility model, the first signal circuit terminal K1 and the second signal circuit terminal K2 may have a common housing, i.e. be integrated, while the formed electrical connections L1, L2 are located nearby. Such a solution can be advantageous, for example, when a larger contact E is preferred to provide contact for the mounting rail T, for example, to discharge high currents.

Each of the first K1 and second K2 terminals of the signal circuit can have a knife disconnector TM1, TM2. The presence of knife disconnectors makes it possible to break the signal circuit without the need for mechanical disconnection of the connected signal line. Locking devices can easily be provided (as an optional addition). In a broken signal circuit, for example, current measurements can be carried out.

In addition, according to a utility model, it is also possible to provide the possibility of inscriptions on the terminals of signal circuits.

Switching signal circuits at the terminal locations can be implemented using various connection technologies, among particular and not limiting the scope of the useful model, which can be called screw connection, direct fixation, using push-in terminals or similar methods .

In a further embodiment of the utility model shown in FIG. 1, 8 and 9 - the USS surge protection plug-in module has one or more contact elements KE1, KE2 for checking and / or reading operational data and / or parameter settings, while even when plugged in, the contact element KE1 / contact is spatially accessible elements KE1 / KE2. This means that even in the stuck state, an element for overvoltage protection can be checked, information can be read from it or its parameters can be adjusted, and thus, there is no need to dismantle it.

According to a further embodiment of the utility model, the USS surge protection plug-in module has at least one VAR varistor and / or a TVSD limiting diode (also called a transient voltage suppressor diode) or a TVS diode) and / or gas discharger (gas discharge) GDT and / or voltage limiting element. In this case, different schemes can be implemented, of which the drawings show the schemes: in FIG. 1 - the so-called potential-free circuit (abbreviation VF, from the English. V-free (potential-free) - without ground potential) (with an optional second contact in the second terminal K2 of the signal circuit for connection to the mounting rail T), in FIG. 3 and FIG. 9 is a so-called one-for-two circuit (with an optional second contact in the second terminal K2 of the signal circuit for connection to the mounting rail T), and in FIG. 8 - the so-called scheme "deuce".

For example, in FIG. 2 and FIG. 6 shows an embodiment suitable for a potential-free circuit or for a “two” circuit, while in FIG. 4, FIG. 5 and FIG. 7 shows an embodiment suitable for a one-for-two scheme.

In accordance with yet another embodiment of the utility model shown in FIG. 9, the first signal circuit terminal K1 in the signal circuit of the first electrical connection L1 has a resistor R1 with low electrical resistance and / or the second signal circuit terminal K2 in the signal circuit of a second electrical connection L2 has a resistor R2 with low electrical resistance. However, low electrical resistance usually has a value below 10 ohms.

Even if the resistor R1, R2 above is illustrated as a component of the corresponding terminal of the signal circuit, this does not have to be that way. For example, it is also possible to integrate resistor (s) into the USS plug-in module for surge protection. For example, then it can be envisaged that when a USS plug-in module is inserted to protect against overvoltage, the direct signal circuit is disconnected only after the electrical connection with the resistor is formed.

At the same time, for various requirements, various types of schemes can clearly emerge.

Due to suitable coding in the connection area of the USS plug-in module for surge protection and / or in the connection area of the corresponding signal circuit terminal K1, K2, it is easy to ensure that only certain combinations are possible.

As clearly follows from the above electrical diagrams, the USS plug-in module for surge protection requires at least a connection to the first signal circuit L1 and to the second signal circuit L2, as well as at least one more connection to the equalizing potential, i.e. the potential of the mounting rail T provided in at least one of the signal circuit terminals K1, K2.

Even if the utility model described above was described only in relation to a two-conductor system, this does not limit the spectrum of possible application of the idea. For example, with a suitable USS surge protection plug-in module, it is also possible to provide surge protection for three-phase current systems. In this case, for example, it is possible to use, for example, 3 or 4 similar terminals of the signal circuit, while again, at least one of these terminals provides contact with equalizing potential.

The list of reference designations in the drawings

Table 1.

K1 first signal circuit terminal L1 first electrical connection K2 second signal circuit terminal L2 second electrical connection USS surge protection plug-in module T mounting rail E device for ensuring electrical contact with the mounting rail BE, PE, GND equalizing potential TM1, TM2 knife disconnector KE1, KE2 contact element Var varistor TVSD limit diode Gdt gas discharger R1, R2 resistor

Claims (16)

1. An assembled surge protection system comprising at least one first signal circuit terminal (K1) to provide a first electrical connection (L1) and a second signal circuit terminal (K2) to provide a second electrical connection (L2), and a plug module (USS ) for protection against overvoltage, while the first terminal (K1) of the signal circuit and the second terminal (K2) of the signal circuit are configured to be mounted on a mounting rail (T) in the immediate vicinity, and at least the first terminal (K1) of the signal circuit has to ensure electrical contact with the mounting rail (T) for electrical contact with equalizing potential (PE, GND), while the plug-in module (USS) for surge protection when plugged in protects against overvoltage the first electrical connection (L1) and the second electrical connection (L2), and when plugged in, the plug-in module (USS) is electrically connected to a device (E) to ensure electrical contact with the mounting rail (T) provided by at least the first terminal (K1 ) signal circuit. 2. The system according to claim 1, characterized in that the first terminal (K1) of the signal circuit and the second terminal (K2) of the signal circuit have essentially the same design. 3. The system according to claim 1 or 2, characterized in that the first terminal (K1) of the signal circuit and the second terminal (K2) of the signal circuit have a common housing, while the formed electrical connections (L1, L2) are located next to each other. 4. The system according to claim 1 or 2, characterized in that the first terminal (K1) of the signal circuit and / or the second terminal (K2) of the signal circuit has (are) knife disconnector (s) disconnector (s) (TM1, TM2). 5. The system according to claim 3, characterized in that the first terminal (K1) of the signal circuit and / or the second terminal (K2) of the signal circuit has (are) knife disconnector (s) disconnector (s) (TM1, TM2). 6. The system according to claim 1, characterized in that the plug-in module (USS) for surge protection has one or more contact elements for checking and / or reading operational data and / or parameter settings, while the contact element / contact elements Available (s) even when stuck. 7. The system according to claim 1 or 6, characterized in that the plug-in module (USS) for surge protection has at least one varistor (VAR), and / or a limiting diode (TVSD), and / or a gas spark gap (GDT) , and / or a voltage limiting element. 8. The system according to claim 1 or 2, characterized in that the first terminal (K1) of the signal circuit in the signal circuit of the first electrical connection (L1) has a resistor (R1) with low electrical resistance and / or the second terminal (K2) of the signal circuit in the signal circuit of the second electrical connection (L2) has a resistor (R2) with low electrical resistance. 9. The system according to claim 3, characterized in that the first terminal (K1) of the signal circuit in the signal circuit of the first electrical connection (L1) has a resistor (R1) with low electrical resistance and / or the second terminal (K2) of the signal circuit in the signal circuit the second electrical connection (L2) has a resistor (R2) with low electrical resistance. 10. The system according to claim 4, characterized in that the first terminal (K1) of the signal circuit in the signal circuit of the first electrical connection (L1) has a resistor (R1) with low electrical resistance and / or the second terminal (K2) of the signal circuit in the signal circuit the second electrical connection (L2) has a resistor (R2) with low electrical resistance. 11. The system according to claim 1, characterized in that the first terminal (K1) of the signal circuit and the second terminal (K2) of the signal circuit have substantially the same design and common housing, while the formed electrical connections (L1, L2) are located next to each other, the first terminal (K1) of the signal circuit and / or the second terminal (K2) of the signal circuit has (are) knife disconnector (s) (s) (TM1, TM2), the first terminal (K1) of the signal circuit in the signal circuit of the first electrical connection (L1) has a resistor (R1) with low electrical resistance and / or the second terminal (K2) of the signal circuit in the signal circuit of the second electrical connection (L2) has a resistor (R2) with low electrical resistance the plug-in module (USS) for surge protection has one or more contact elements for checking and / or reading operational data and / or parameter settings, while the contact element / contact elements are accessible (s) even when plugged in, and the plug-in module (USS) for surge protection has at least one varistor (VAR), and / or a limit diode (TVSD), and / or a gas spark gap (GDT), and / or a voltage limit element.

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