JPH0236245Y2 - - Google Patents

Description

[Detailed Description of the Invention] Industrial Application Field The present invention relates to a lightning arrester, and particularly to the arrangement of a nonlinear resistor using a zinc oxide element (ZnO) housed in an insulating container and its connection structure.

BACKGROUND TECHNOLOGY Most standard lightning arresters are used, but in some cases, a surge arrester with excessive energy handling capacity that exceeds the energy handling capacity of the standard lightning arrester may be required. be. In such cases, conventionally, nonlinear resistance elements (hereinafter referred to as elements) were arranged in parallel in an insulating container (cylindrical) to increase the energy withstand capacity.

Now explaining this using Figures 4 and 5,
In each figure, 1 is an insulating container, and 2 is a lid plate that seals both ends of the insulating container 1. The insulating container 1 includes:
Multiple rows of elements 3, 3... are arranged in parallel, the upper end of the element 3 is connected to the line side terminal via an electrode 4 and a spring 5, and the lower end is connected to a distance 7 via an electrode 6. It is supported and connected to the ground terminal. In the above, the lightning arrester shown in Fig. 4 shows a standard specification element arrangement row in which two rows of elements 3 are arranged in parallel, and Fig. 5 shows an element arrangement row with excessive energy specification in which elements 3 are arranged in seven rows in parallel. ing.

Problems to be solved by the invention As mentioned above, the conventional way to deal with the demand for increased energy handling capacity is simply to increase the number of elements 3 arranged in parallel according to the demand. . However, with this method, the diameter of the insulating container 1 increases in proportion to the increase in the number of elements arranged, but in the case of insulating containers such as insulating tubes, the manufacturing cost becomes significant due to the increased size of the insulating container. There is a problem that the amount of energy increases. Furthermore, the weight increased, making it difficult to handle and increasing the number of assembly steps.

Means and Effects for Solving the Problems The present invention solves the above-mentioned drawbacks, namely, a plurality of elements are arranged and housed in series in an insulating container, and each electrode interposed between the elements is The conductor connected to the line side terminal and the conductor connected to the ground side terminal are electrically connected in parallel, and the conductor on the line terminal side and the conductor on the ground terminal side are respectively connected to different electrodes, This allows the same amount of electricity to flow through the elements arranged in series as when arranged in parallel.

Embodiment First, the basic structure of the lightning arrester according to the present invention will be explained with reference to FIGS. 1 to 3. It should be noted that the same parts as in the prior art will be described with the same reference numerals.

In each of the above figures, elements 3, 3... are insulating container 1
A plurality of electrode plates 6a...6f are arranged in series within the device, and electrode plates 6a...6f are arranged between each element and on the outer end surfaces of the elements located at the upper and lower ends.
is attached. And the spring 5 and the electrode plate 6a
The electrode plates 6c and 6e are electrically connected in parallel to the conductor 10 which is connected to the line terminal through the distance 7, and the conductor 11 which is connected to the ground terminal side through the distance 7 and the electrode plate 6f is also an electrode plate. Connected to 6b and 6d. In this way, the conductors 10 on the line terminal side and the conductors 11 on the ground terminal side are alternately connected to the electrode plates 6a located every other place, and are not connected to the same electrode plate.

Thus, FIGS. 1A and 1B show an example of element arrangement using a standard specification element 3, and FIGS. 2A and 2B show an example of element arrangement using a small specification. In the case of FIG. 2, the electrode plates 6a...6f are arranged between every two elements.

Next, FIGS. 6A and B and FIGS. 7A and B show examples in which the present invention and the conventional example are compared using specific examples, and the same members as those described above are given the same reference numerals and will be explained. . That is, Fig. 6 shows a lightning arrester in which five elements 3 of φ64 x 10t are arranged in parallel, and Fig. 7 shows a lightning arrester in which four elements 3 of φ32 x 10t are arranged in series in five rows. In other words, a total of 20 pieces are placed in parallel,
As shown in the figure, lightning arresters are shown connected by conductors 10 and 11, respectively, via electrode plates 6a...6f.

According to the above, the usage weight of element 3 is the same for the lightning arresters in FIGS. 6 and 7, and even though their energy handling capacity is the same, the weight W
In the case of Fig. 6, W = 180Kg, whereas in the case of Fig. 6, W = 180Kg.
In the case shown in the figure, W = 70Kg, and the weight could be reduced by about 90Kg. In other words, the size of the insulating container 1 (the value here shows an example using an insulated pipe) is a factor that greatly affects such weight reduction.
In the figure, the diameter is φ240 and the length is 490mm, while in Figure 7, the diameter is φ115 and the length is 370mm.
was able to be downsized. Furthermore, as shown in FIG. 3, a groove 8 is provided along the entire length of the inner wall of the insulating container 1 in the vertical direction, and the conductors 10 and 11 are inserted into the groove, thereby further reducing the size. In addition, in FIG. 7A, 9 is an insulating seat.

Effects of the invention As described above, according to the lightning arrester according to the invention, the effect of arranging the elements in series and the effect of electrically connecting each element in parallel combine to improve energy processing. If the capacity is the same, the insulating container can be made smaller than the conventional one.
Weight can be reduced. Cost can be reduced. Assembly man-hours can be reduced. This has the effect of improving the absorption rate of surge energy and increasing reliability.

[Brief explanation of the drawing]

Figures 1A and B and Figures 2A and B are longitudinal and cross-sectional views showing two examples of the lightning arrester according to the present invention, respectively; Figure 3 is a cross-sectional view showing yet another example;
Figures A and B and Figures 5A and B are longitudinal and cross-sectional views showing two examples of conventional surge arresters, respectively. Figures 6A and B and Figures 7A and B are respectively a conventional surge arrester and a FIG. 2 is a vertical cross-sectional view and a cross-sectional view for comparing the numerical values of specific examples of the invented lightning arrester and their differences. FIG. 1...Insulating container, 3...Element, 6a...6f...
Electrode plate, 10, 11... conductor.

Claims (1)

[Scope of utility model registration request] A plurality of elements are arranged in series and stored in an insulating container, and a conductor connected to the line terminal side and a conductor connected to the ground terminal side are electrically connected in parallel to each electrode interposed between the elements, respectively. A lightning arrester characterized in that the conductor on the line terminal side and the conductor on the ground terminal side are connected to different electrodes.