DE822570C - Current transformer with an iron core that can be opened with a simple movement - Google Patents

Description

To measure alternating currents on live conductors, there are already converters, the iron core of which is slightly opened to encompass the power line and can be closed (so-called Dietze investors E W). The previously used form this transducer corresponded to a pair of pliers; H. to open the iron core were two Parts of the same spread apart by two articulated levers and brought back together after embracing the conductor. For closely spaced Ladder, this arrangement is not always useful, as it is often not between the ladders there is enough space to insert the opened pliers. That's why you have already arranged one leg of the transducer rotatable relative to the yoke. This execution but also points to the part that must encompass the head in the open State or during the process of closing a larger space requirement than when closed State. This version therefore does not have any fundamental features compared to the pliers shape Improvement, but only has advantages in particularly well-positioned cases.

In contrast, the present invention brings an embodiment in which the opened converter core and the closing process for the part that includes the conductor, take up no more space than the closed transducer, wherein the entire investor is also no more extensive than the previously customary embodiments. This is achieved in that part of the converter core is parallel to itself is arranged displaceably.

In the figure is an embodiment of such a Converter shown. Part 2 of the converter core is firmly connected to the holder i. It carries the winding 3 to which the measuring instrument 4 is connected. The part 5 of the core can be moved parallel to itself. He is by the handle 6 moves against the force of the spring 7. This always pushes him into his starting position, d. H. back to the closed core position. This is done through a nose 8 a roller or ball 9 against the surface running obliquely to the direction of movement io of the holder pressed. So the moving part of the core is made by the force the spring both in its direction of movement and across it firmly against the fixed part of the core and it becomes a good magnetic closure guaranteed.

For special purposes, a slimmer shape than the one shown can be used for the core can be chosen to work with the device even in very tight spaces to be able to operate.

Claims (4)

PATENT TANSPRUCIIE: i. Current transformer with an iron core which can be opened by a simple handle, characterized in that a part (5) of the iron core is arranged so as to be displaceable parallel to itself. 2. Current transformer according to claim i, characterized in that the displaceable part (5) of the iron core through Spring force (7) is held in the closed position and by a handle (6) can be moved against this spring force. 3. Current transformer according to claim i and 2, characterized in that a device is provided to the displaceable Part of the core perpendicular to the direction of movement firmly against the stationary part to press the core. 4. Current transformer according to claim i to 3, characterized in that that when moving the movable part (5) a ball or roller (9) an inclined surface (io) of the holder runs up and so one perpendicular to the direction of movement acting force triggers.