PLUG

Abstract

Provided is a plug for use as a disconnector for current transformers. Two types of short circuits are provided in the plug. A first short circuit is used for diverting overvoltages by short-circuiting the electrical contacts in the plug. A second short circuit is provided for short-circuiting electrical contacts in the plug when the plug is not contacted. The short circuits are designed in such a way that the first short circuit is used as a fuse when the second short circuit fails.

Claims

1-9. (canceled)

10. A plug connector comprising an insulating body having a plug-in side and a connection side, and also at least one first electric contact and at least one second electric contact that are received in the insulating body, wherein the electric contacts form on a first end a plug-in region and on a second end form a connection region, wherein the plug-in regions are embodied as bush contacts or pin contacts on the plug-in side of the insulating body and the connection regions provide a conductor connector in the connection side of the insulating body, wherein the insulating body comprises a first short circuit by which the first electric contact and the second electric contact can be connected in an electric manner, wherein the plug connector comprises a second short circuit that when spring-loaded produces an electrically conductive connection between the first electric contact and the second electric contact, wherein the second short circuit is allocated an actuator on the plug-in side of the insulating body and the electrically conductive connection between the electric contacts can be disconnected by said actuator, wherein the first short circuit is an overvoltage arrestor and by which the overvoltage arrestor an electric short circuit can be produced between the first electric contact and the second electric contact, wherein the short circuit between the first electric contact and the second electric contact is permanent and can no longer be disconnected.

11. The plug connector as claimed in claim 10, wherein a blocking device is embodied on the plug connector and said blocking device comprises a block, wherein the block is suitable for the purpose of protruding into the plug-in side of the plug connector.

12. The plug connector as claimed in claim 10, wherein the first short circuit is adapted to influence the blocking device.

13. The plug connector as claimed in claim 10, wherein the actuator of the second short circuit protrudes into the plug-in side of the plug connector.

14. The plug connector as claimed in claim 10, wherein the actuator is adapted to be actuated by a mating plug connector that is to be plugged in and the electrically conductive connection between the electric contacts can be disconnected.

15. The plug connector as claimed in claim 10, wherein the plug connector is adapted to connect a current convertor.

16. The plug connector as claimed in claim 10, wherein the plug connector is adapted to be used as a disconnecting switch for a current convertor.

17. The plug connector as claimed in claim 10, wherein the plug connector is constructed in a modular manner

Description

EXEMPLARY EMBODIMENT

[0029] Exemplary embodiments of the invention are illustrated in the drawings and further explained hereinunder. In the drawings:

[0030] FIG. 1 illustrates an electrical circuit diagram of the plug connector in accordance with the invention;

[0031] FIG. 2 illustrates a schematic view of a plug connector in accordance with the invention in a first exemplary embodiment;

[0032] FIG. 3 illustrates a schematic view of a plug connector in accordance with the invention in a second exemplary embodiment; and

[0033] FIG. 4 illustrates a schematic view of a plug connector in accordance with the invention in a third exemplary embodiment.

[0034] The figures include in part simplified, schematic illustrations. Identical reference numerals are used in part for identical but where appropriate non-identical elements. Different views of identical elements could be scaled differently.

[0035] FIG. 1 illustrates an electrical circuit diagram of a plug connector 1 in accordance with the invention. The circuit diagram illustrates a first electric contact 3 and also a second electric contact 4 on the left-hand or right-hand outer side. The two electric contacts 3, 4 are connected to one another in an electric manner at two sites.

[0036] A first connection between the electric contacts 3, 4 is formed by means of a first short circuit means 5. The first short circuit means 5 is embodied as an overvoltage arrestor. In the case of an excessively high voltage between the first electric contact 3 and the second electric contact 4, the overvoltage arrestor produces a permanent electrical connection between the electric contacts 3, 4.

[0037] A second connection between the electric contacts 3, 4 is formed by means of a second short circuit means 6. The second short circuit means 6 is embodied as an opening device. When the switch is spring loaded, it represents an electrically conductive connection between the first electric contact 3 and the second electric contact 4. An actuator 6.1 that is provided so as to open the second short circuit means 6 is further described in FIG. 3.

[0038] A schematic illustration of a first exemplary embodiment of the plug connector 1 in accordance with the invention is illustrated in FIG. 2. The figure illustrates the plug connector 1 that is formed from an insulating body 2. The insulating body 2 has received in the interior a first electric contact 3 and also a second electric contact 4.

[0039] The electric contacts 3, 4 comprise in each case a plug-in region 3.1, 4.1 and a connection region 3.2, 4.2. The plug-in regions 3.1, 4.1 form a plug-in side 2.1 of the insulating body 2. The opposite-lying connection regions 3.2, 4.2 are provided so as to connect electrical conductors. For this purpose, the connection regions 3.2, 4.2 are equipped with cage clamps that are provided in a connection side 2.2 of the insulating body 2.

[0040] In accordance with the invention, the first short circuit means 5 and the second short circuit means 6 are arranged between the first electric contact 3 and the second electric contact 4. The first short circuit means 5 is embodied as an overvoltage arrestor. The second short circuit means 6 is provided as a spring-loaded opening device in the insulating body 2. Said spring-loaded opening device is illustrated in more detail in FIG. 3.

[0041] FIG. 3 illustrates a schematic view of a plug connector 1 having a second short circuit means 6. The second short circuit, means 6 is equipped with an actuator 6.1. The actuator 6.1 is provided so as to open the short circuit means 6. For this purpose, the actuator 6.1 protrudes into the plug-in side 2.1 of the insulating body 2. As a result of the contact between the plug connector 1 and a mating plug connector, the actuator 6.1 is thus pushed into the insulating body 2 and the short circuit means 6 is opened. The electrical connection between the first electric contact 3 and the second electric contact 4 is disconnected in this manner.

[0042] FIG. 4 illustrates a schematic view of a plug connector 1 having a first short circuit means 5. The first short circuit means 5 connects the first electric contact 3 to the second electric contact 4. The first short circuit means 5 is embodied as an overvoltage arrestor. In the event of an overvoltage between the electric contacts 3, 4, the first short circuit means 5 represents an electrical permanent connection between the electric contacts 3, 4.

[0043] In this special exemplary embodiment, the plug connector 1 comprises in addition a blocking device 7. This blocking device 7 is coupled to the first short circuit means 5. If the first short circuit means 5 is triggered and an electrical connection between the electric contacts 3, 4 produced, the blocking device 7 is also triggered. This blocks the plug-in side 2.1 of the insulating body 2. The plug connector 1 is thus prevented from being plugged back in.

[0044] In the schematic view in FIG. 4, the blocking device 7 is illustrated in the initial state on the right-hand side near the electric contact 4. The blocking device 7 is illustrated in the triggered-state on the left-hand side near the electric contact 3.

[0045] A blocking means 7.1 is allocated to the blocking device 7 and in the initial position (right-hand side of FIG. 4) is mounted by way of example in a pre-stressed manner in the insulating body 2. The blocking means 7.1 is connected by means of the blocking device 7 to the first short circuit means 5. When the first short circuit means 5 is triggered as a result of an overvoltage (left-hand side of FIG. 4), the blocking device 7 is activated and the pre-stressed blocking means 7.1 moves into the plug-in side 2.1 of the insulating body 2. The blocking means 7.1 blocks the plug-in side 2.1 as a result of which it is no longer possible to plug the plug connector 1 back into the mating plug connector. It is preferred that the blocking means 7.1 latches permanently in this position so that it is no longer possible to reverse the defective state of the plug connector 1.

LIST OF REFERENCE NUMERALS

[0046] 1 Plug connector

[0047] 2 Insulating body

[0048] 2.1 Plug-in side

[0049] 2.2 Connection side

[0050] 3 First electric contact

[0051] 3.1 Plug-in region

[0052] 3.2 Connection region

[0053] 4 Second electric contact

[0054] 4.1 Plug-in region

[0055] 4.2 Connection region

[0056] 5 First short circuit means

[0057] 6 Second short circuit means

[0058] 6.1 Actuator

[0059] 7 Blocking device

[0060] 7.1 Blocking means