JPS6320095Y2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to the structure of a lead wire connection between an electrical device, such as a voltage transformer, housed in a container and an external connection terminal attached to the lid of the container.

As a connection means between the high-voltage side terminal for external connection attached to the lid of the container and the high-voltage part of the internal transformer body, such as the high-voltage winding, such as in a voltage transformer, etc.
Some types have contacts on both sides, and the connection is made automatically when the lid is attached to the container.
With this contact structure, it is necessary to strictly suppress misalignment of the contact part and dimensional errors in height and height, and jigs and other adjustments are required on both the contact side and the receiving side, and adjustment work during assembly is time consuming. This requires a lot of effort and also requires an adjustment mechanism for the contact portion. Moreover, if there is a slight positional deviation between the two, it is inevitable that mechanical stress will be applied to the high voltage winding.

On the other hand, when connecting the two with a lead wire, the extra length of the lead wire protrudes beyond the shield.
There is a risk of an accident, and there is also a risk that the lead wire length will be too short and stress will be applied to the high voltage winding upon completion of assembly.

The present invention eliminates these drawbacks, and embodiments thereof will be described in detail below.

In FIG. 1, a transformer 2 is housed in a container 1, and a high voltage winding 2a is provided therein. In the present invention, a lead wire fastener 2b is attached to the high voltage winding 2a in advance, and a terminal 2b1 is provided near the attachment part to connect the high voltage end of the high voltage winding 2a.

On the other hand, one end of a lead wire 4 is attached in advance to the lower end of a high voltage conductor 3a provided on an insulating spacer 3 serving as the lid of the container, and a high voltage side shield 3b is fixed so as to cover the lead wire 4.

Here, the lead wire fastener 2b is arranged so that the mounting portion of the lead wire 4 at the tip thereof is slightly below the upper end of the container 1. The longer the lead wire 4 is, the easier it is to connect it to the lead wire fastener, but its length is at most about twice that of the lead wire fastener 2b.

During assembly, as shown in the figure, the insulating spacer 3 is brought close to the container 1, and the other end of the lead wire 4 is connected to the upper end of the lead wire stopper 2b. After connecting the lead wires in this manner, the insulating spacer 3 is attached to the container 1. In this case, the lead wire 4 is bent and gradually accommodated in the high-voltage side shield 3b, and finally the second
As shown in the figure, the lead wire 4 is attached to the lead wire stopper 2.
It is housed in the high-voltage side shield 3b together with the high-pressure side shield 3b, and is completely covered. Alternatively, one end of the lead wire 4 may be fixed in advance to the upper end of the lead wire fastener 2b, and the other end may be attached to the high voltage conductor 3a during assembly. Further, as the lead wire fastener 2b, a conductor having an appropriate shape that can be accommodated in the high voltage side shield, such as a round bar shape or a thin plate shape, can be used.

Next, FIG. 3 shows an embodiment in which a high-voltage bushing terminal 5 is used instead of the high-voltage side conductor and is attached to the lid 6. It is assembled in the same manner as in the case of FIG. 2, and the lead wire 4 and the lead wire The fastener 2b can be housed within a shield 3b attached to the high voltage bushing terminal 5.

Although the above explanation has been made for the case where there is only one connection point, the same applies to the case where there are a plurality of connection points, that is, three phases, as shown in FIG. That is, 3 provided in the container 1
A lead wire clamp 2b is fixed to each high voltage coil 2a of the voltage transformer 2, and a high voltage side shield 3b is attached in advance to the high voltage bushing terminal 5 attached to the insulating spacer 3. A lead wire 4 of a predetermined length is used to connect the leading end of the lead wire fastener 2b. In this way, when the insulating spacer 3 is attached to the container 1,
The lead wire 4 is accommodated in the high voltage side shield 3b together with the lead wire holder 2b without being bent or protruding, and three-phase simultaneous connection can be achieved.

As explained above, according to the present invention, the connection between the high voltage part of the high voltage small capacity electrical equipment provided in the container and the high voltage terminal for external connection can be safely and easily made using the lead wire.

[Brief explanation of the drawing]

Fig. 1 is a cross-sectional view showing the assembled state of the lead wire connection part according to the embodiment of the present invention, Fig. 2 is a cross-sectional view showing the state when the assembly is completed after connecting the lead wires, and Fig. 3 is a cross-sectional view showing the state when the assembly is completed after connecting the lead wires. FIG. 4 is a cross-sectional view showing an example applied to a three-phase connection part. 1... Container, 2... Transformer, 2a... High voltage winding, 2b... Lead wire holder, 3... Insulating spacer, 3a... High voltage conductor, 3b... High voltage side shield, 4... Lead wire , 5... High voltage bushing terminal, 6... Lid.

Claims (1)

[Scope of utility model registration request] When connecting a high-voltage part of an electrical device provided in a container with a terminal for external connection attached to the lid of the container using a lead wire, a lead wire holder having one end fixedly connected to the high-voltage part; A lead wire is connected to the other end of the lead wire holder, the other end is connected to the terminal, and a shield is attached to the terminal, and the length of the lead wire is set to the length of the lead wire holder. A high-voltage side lead wire connection part for electrical equipment, wherein the lead wire is bent and housed in the shield together with the lead wire holder when the lid is attached to the container. structure.