DE7227174U - Device for grounding and short-circuiting of current paths of an electrical switch cell - Google Patents

Description

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SIEMENS AKTIBNUESfitbLSUHAE ⁴ ! ^: ■ -Erlangen, dan ^{CUi guLI rar} * Berlin and Munich Werner-von Siemens-Str, 5o Ji

Our sign:

VPA 72/3152 Bec / Bes

Device for earthing and short-circuiting the current paths of an electrical switching cell

The innovation relates to a device for grounding and short-circuiting the current paths of an electrical Switching cell, consisting of a multi-pole skewer, the pole prongs of which are combined in a conductive bridge and above a switch drive actuating lever protruding from the cell front for taking them Working position can be inserted into the cell.

A known device of the above type is used for grounding and short-circuiting switch cells with mobile ones Switches. Suitable means on the switches prevent the multi-pole spit from being in the operating position the switch can be brought into its working position. The means provided are latches that are in the Operational position of the switch prevent the introduction of the skewer into the cell. Only when the switch is his Assumes a separated position, the spit is in its working

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position can be introduced (German utility model 6 751 538).

The known device cannot be used in switchgear cubicles with permanently installed switches. These are merely designed to separate the cell current paths, but not set up to do so, regardless of their switching position to assume a position separate from the cell current paths. When using the known device In switching cells with permanently installed switches, it could happen that the switch is then switched on when the earthing device is in its working position. The consequence would be a short circuit, the considerable one Can have consequences.

The object on which the innovation is based is therefore to create a device of the type mentioned at the beginning A genus that can be used without significant changes for switch cells with permanently installed switches and is designed in this way is that in their working position, the actuation of the switch is prevented.

The problem posed is achieved in that the spit bridge has a bracket which is used for locking overreaching or path-limiting reaching behind the actuating lever is trained. As before, the skewer can only be inserted into the working position in the cell if the Switch is in its off position. In the work situation

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VPA 3152/72

of the skewer engages over or behind the bracket the drive actuating lever, so that the drive of the switch cannot be operated. Switching on the switch is thus prevented in a simple manner, when the line rungs through the skewer are grounded or shorted.

An embodiment of the utility model object is shown purely schematically in the drawing.

Show it:

Fig. 1: a side view of the skewer in its working position,

FIG. 2: a top view according to FIG. 1.

A device for grounding and short-circuiting current paths 1, 2, 3 of one only indicated in two outlines electrical switching cell 4 consists of a multi-pole skewer 5. In the example shown, the skewer 5 has three poles. The pole prongs of the spit 5 are combined in a conductive bridge 6 and above one of the cell front Outstanding switch actuator operating lever 7 can be inserted into the cell 4 to assume its working position.

The spit bridge 6 has a bracket 8, the locking reach over or limit the path from behind

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of the operating lever 7 is formed.

As already mentioned at the beginning, the skewer 5 can only be inserted into its working position when the not shown Switch is in its off position. Depending on the position of the operating lever 7 engages over or behind the Bracket 8 the actuating lever and thus prevents its actuation in a simple manner, with which otherwise only an example ? "means switch drive 9 for switching on of the switch can be started.

1 right to protection

2 figures

722717423.11.72

Claims (1)

Device for grounding and short-circuiting the current paths of an electrical switching cell, consisting of a multi-pole skewer, the pole prongs of which are combined in a conductive bridge and above one from the cell front The protruding switch drive lever can be inserted into the cell to take its working position are, characterized in that the spit bridge (6) has a bracket (8), the locking Reaching over or behind the actuating lever (7) is formed. 722717423.11.72