DE7728177U1 - CONVERTERS, IN PARTICULAR SUMMARY CURRENT CONVERTERS - Google Patents

Description

SIEMENS AKTIENGESELLSCHAFT Our mark:

) Berlin and Munich VPA 77P 4 0 3 9 FRG

Transformers, especially summation current transformers

The invention relates to a converter, in particular a summation current converter, whose magnetic core is arranged in a protective trough that carries the windings and protects the core.

Converters with such protective troughs are particularly useful in residual current circuit breakers used to protect the sensitive magnetic material from pressure and damage when applying the windings to protect. In order to reduce the dimensions of converters, it is assumed that the magnetic core is wound with litz wires, and uses solid conductors such as enamelled copper wire.

The invention is based on the object of developing a converter whose protective trough for the magnetic core is not pushed into one another or otherwise deformed by the winding tension can.

The solution to the problem described is that the protective trough is formed from hoods, the end faces of which are standing one against the other interlock in the manner of tongue and groove. This training prevents the end faces from sliding off one another. With pressure in the direction of the imaginary axis of the annular protective trough this means that much higher forces can be absorbed. Torsional forces around the imaginary axis of the protective trough can especially are well received when the adjacent end faces are designed to be interlocked. It is cheap to have the protective trough with you

No 2 Sei, 9/6/1977

7728177 01/04/79

~ ² "77P 4 03 9 FRG

(Train reinforced outer walls. This allows even greater forces to be absorbed in the direction of the imaginary axis.

The invention is to be reproduced schematically with the aid of one in the drawing Exemplary embodiment will be explained in more detail.

In Figure 1 is an annular hood after a section through the imaginary Axis reproduced.

FIG. 2 shows the view of an uncut hood according to FIG. 1, seen from the front side.

In Figure 3 is a converter with a protective trough made of hoods

Figures 1 and 2 reproduced.

The transducer according to FIG. 3 is shown in FIG. 4, seen from the end face.

In Figure 5, the converter according to Figure 4 is shown in plan view.

The protective trough is formed from two annular hoods 1 according to Figure 1, the adjacent end faces 2 in the manner of Groove 3 and tongue 4 interlock. In the exemplary embodiment, the hood 1 is interlocked on the end faces 2 which are located one against the other educated. Along sectors 5 according to FIG. 2, the hood 1 is, for example, on its end face with roof-shaped depressions provided, as illustrated in Figure 1 below. The end faces of the outer walls of the hood 1 are in sectors 6 in Direction of the imaginary axis perpendicular to the plane of the drawing is designed to be extended and, for example, with a roof-shaped bead provided, as shown in Figure 1 above. The front side therefore jumps along the sectors 6 opposite the front side in the Sectors 5 before, so that two hoods interlock with one another at the adjacent end faces.

A protective trough, which is formed from two annular hoods, preferably has reinforced outer walls 11, which the winding train when wrapping the protective trough. 35

The view according to FIG. 1 results after the section along I-I a hood 1 according to FIG. 2. In the exemplary embodiment, each hood 1 is provided with lamellae 7 in order to keep the windings separate.

7728177 01/04/79

_ 7 _ 79 B f. Η ο ο οηη

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The converter according to Figure 3 consists of a protective trough 8, the ..

is formed by two annular hoods 1 and the Spulenwin- ■;

fertilize 9. These coil turns consist in particular of solid $

conductors, for example made of enamelled copper wire. At 10 there is an on | _:

termed terminal clamp. | ij

Further connection terminals for further windings are behind the 1

Imagine the plane of the drawing arranged. They are from the figures 4 |

and 5 can be seen. Understandably, the need can meet |

accordingly more or less windings and correspondingly more |

or fewer terminals may be provided. A secondary wind |

treatment is denoted by 12. I.

7728177 04.8179

Claims (1)

! - _Λ - ⁴ - 77Ρ 4 03 9 BRO I -) P & i sayings ι 1. Converter, in particular summation current converter, its magnetic core j; ' is arranged in a protective trough which carries the windings i'i and protects the core, thus gokennzeichen- ['net that the protective trough (8) is formed from hoods (1), ^! their facing end faces (2) in the manner of a groove (3) : and spring (4) interlock. i; 2. Converter according to claim 1, characterized in that the ; adjacent end faces (2) are designed to be interlocked. I. , 3. Converter according to claims 1 or 2, characterized in that ' ^{: l} that the protective trough (8) has reinforced outer walls (11).