DE1613706B2 - SHORT-CIRCUIT DEVICE FOR THE SECONDARY CIRCUIT OF AN ELECTRICITY CONVERTER - Google Patents

Description

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The invention relates to a short circuit with a short circuit device according to the invention a short-circuiting of the secondary converter is automatically performed for the secondary circuit of a current, get its secondary circuit for connection of the main circuit when removing the device, devices provided with plug contacts, e.g. B. of Short-circuiting takes place before removing Relay or measuring devices, in the form of a socket 5 of the apparatus from the secondary circuit, so that each is trained. Danger to the current transformer is excluded. When switching off electrical devices, the reverse is also guaranteed that when single-direct connected to a current transformer, the device push the short circuit of this circuit there is a risk that the secondary circuit of the current will only be canceled when the device is electrically connected converter is opened unintentionally. This is true io the circle is turned on.

especially when using plug-in devices, the mentioned contact bracket consists of a z. B. Relay with connector pins. Usually, roof-shaped bent sheet metal strips are hook-shaped manually operated changeover switches with bent ends that are pressed against the contact sleeves and by the spring acting on the non-breaking contacts to short-circuit the bracket Secondary circuit of the current transformer provided, which 15 are pressed against surfaces of a web, the must be actuated before the apparatus of its the opening of the contact bracket receiving the Mounting plate is removed. Because the um-base closes at the bottom too. On the contact bracket switch is operated by hand, but there is always a guide and actuation pin of the risk of an interruption of the secondary of such a length that the connection of the circle and damage to the current transformer 20 both sleeve contacts is only canceled, after entering can. which the connector pins of the device are inserted into the sleeves from the German patent 877 042 is a contacts.

Known device that is intended to prevent that in an embodiment of the invention in appli-

Disconnecting the connection lines from a relay to a relay with plug-in contacts is

Secondary circuit of a current transformer is described with reference to the drawing,

This circle is interrupted and in the drawing, F i g. 1 an assembly

thus the current transformer could be destroyed. plate 1. This plate has round recesses 23,

This is achieved by having the circuit open to the rear of the plate and to the

removing one of the terminals apart from the openings 24 and 25

covering cap these are short-closed by a spring. In the recess 23 sits a

getting closed. When the cap is closed, round base 2 made of insulating material with a collar 26,

the spring of one attached to the cap which is used to attach the base. The base has

Bolts spread apart, so that the short two through holes 11 fastened in it

The end is canceled. In this known to are two sleeve contacts 9, which are used to accommodate the

Order, however, no security is given, 35 connector pins 21 of the device labeled 20, z. B.

that when putting on the cap and this one relay, serve, of which only the base plate in the

is shown by the conditional opening of the circuit a section.

The device that closes the secondary circuit is switched on. The base 2 has a funnel-shaped opening. mung 3 of a rectangular plan, which merges at its A current transformer, to the 40 with plug contacts tip in a chamber 3 α. In the accidental devices that can be connected directly, 3 there is a roof-shaped bent contact, showing z. For example, the book “Electrical and Heat Brackets 4, the web of which is denoted by 5. The ends of the 8 technical measurements from the Hartmann company of the contact clip are bent in a semicircle and & Braun, Frankfurt / M. on page 132. are supported on a web 27 which is fastened in the base 2. The object of the invention is 45. The support surfaces on the web are to be created with 10 a device in which it is called auto. On the web 5, a spring 6 acts, it is automatically ensured that when removing the other end of the device is supported on the bottom of the chamber 2 a from the secondary circuit of a. This spring presses the contact ends 8 current transformer of the secondary circuit short-circuited against the contact sleeves 11, ie the spring 4 closes, and when a Ge 50 is switched on, the two sleeve contacts 11 are short. With the ends of this circle it is only opened, 12 of these sleeve contacts, lines 13 are soldered when the electrical connection to the device is established, which is made to the secondary terminals of the current transformer. to lead.

This object is achieved according to the invention in that a pin 14 is attached to the web 5 of the contact 4, solved that the short-circuit device from a 55 He protrudes into an opening 28 of the web 27, the same-insulating base with the sleeve fastened therein is conical with the opening 25. At the bottom of the device clocks for recording, the plug pins of the in FIG. 20 are attached to a pin 22 which, when the Secondary circuit of the current transformer to be switched on sockets 21 the pin 14 against the spring ends Device consists of one in one force 6 moves. The contact 4 is in the The cavity of the insulating material base is pushed in against a recess 3, the contact ends 8 The spring, which can be displaced between two positions, is separated from the sleeve contacts 11, d. H. Contact bracket, the short circuit of the lines 13 is canceled by one on the plug. Device fastened pin in a first end position. The reverse occurs when pulling out the connector pins when the plug contacts are removed, the sleeve contacts 21, the short circuit of both lines again electrically connects with each other and placed in a 65 before the pins 21 expand the sleeve contacts 9 End position with inserted plug-in cones, d. H. the secondary winding of the power wall clock the sleeve contacts are no longer with each other lers is constantly short-circuited, be it through the connects. Contact 4 or by the device 20 itself.

Claims (3)

Patent claims: 1. Short-circuit device for the secondary circuit of a current transformer, its secondary circuit for connecting devices with plug contacts, e.g. B. of relays or measuring devices, is designed in the form of a socket, characterized in that the short-circuit device from an insulating base (2) with sleeve contacts (9) fastened therein for receiving the plug pins (21) of the in the Secondary circuit of the current transformer to be switched on device (20) and one in a cavity (3) of the insulating base (2) against a spring (6) between two positions movable contact bracket (4), which is attached to the plug of the device (20) by a Pin (22) in a first end position with removed plug contacts, the sleeve contacts (9) electrically connects with each other and in a second end position with inserted plug contacts the sleeve contacts (9) no longer connect to one another. 2. Apparatus according to claim 1, characterized in that the contact bracket (4) from a roof-shaped bent sheet metal strip with hook-shaped bent ends (8), which by the spring (6) acting on the contact bracket (4) against the contact sleeves (9) and against Surfaces (10) of a web (27) are pressed, which the contact bracket (4) receiving Cavity (3) of the insulating material base (2) closes off at the bottom. 3. Apparatus according to claim 1, characterized in that the contact bracket (4) has a guide and actuating pin (14) is attached of such a length that the connection of the two sleeve contacts (9) is only canceled after the connector pins (21) of the device (20) are inserted into the sleeve contacts (9). 1 sheet of drawings