JPS59231898A - Electric field moderating shielding plate - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention is based on the 11th nord for the 11th electric field in which the uniformity of the electric field between the optical and optical parts is achieved to improve the performance of the electric field. Regarding the electric field line, the surface of the everyday metal cover is coated with insulation HI'1.+ resin to further improve the voltage performance. purpose.

In general, the arrangement '14' housing the three-phase air switch is structured as shown in Figures 1 and 2, and is located on the left side (111, 1 wall) of the box-shaped panel main body ill. Supports 1-i and 121 are fixed to the front parts, respectively, and the pneumatic switch 3) is supported between the shell holders (2). In other words, between the middle thick part of the mountain bark holding bracket (21)
qI+ +4+ is rotatably supported, and the operations 1; 11
+ 1411: The three-phase operating lever (5) is solidified, and the Sakishima'W part of each of the three levers, 5) (by rotation of the push lever (5)) - The HJ working contact 6) that moves downward is supported, and the three-phase upper support (+F + r- (81 is supported) is and the valley supporting insulator (
8), the fixed contactor (9) is cut by the movable contact piece (6) on the top l(of l=ir(+s?,
) is provided, and furthermore, the lower part of Yamahamochikinami (2) [14
Lower bracket fixed to j (3-phase lower support 6 to 1())
The insulators (11) are supported by supports 4-'I, and each supporting insulator (111)
)L is the movable contact (0) on the lower part of the top of the
; Sliding contact 1QBI with multiple contact at h time! i' 112+ is provided. In addition, fl 31 is 1″ each, part V high plate 1′
1 (≦ arc-extinguishing chamber supported, +141 IJ-J, 1 each
This is the arc contact width r- provided on -f of the 9P operating lever (5).

Also, there are warts on the board body (1) (iI11 on the wall).
1 part: 3-phase cosmic source 1 rule] ゛Tsongku j151 or l
; 3-phase D-type 11i11 phononk (16
) are installed therein, and each middle fill plug (15) is connected to each upper part of the load side (16) and each lower part of the load side (16) is connected to each lower part. and each power fuse! + 71 is connected to 51 (181 and (19) are @#
1 rule bushing (field and load 1tlll), bracket example stand for supporting the connector (not shown) connected to the bushing (1G), (2o) is the ground terminal, (21) is the disconnection barrier .

In addition, in this type of switchboard, in order to equalize the small difference distribution between the photovoltaic parts and the light part and the earth potential board body (1), the three-phase Both 1 ft of each charging section 1221 around the upper terminal section of
Shield plates (23a) and (23b) for electric field relaxation are provided to cover the charged part +22) at the same potential as the charged part +22), and each photoelectric part (23b) around the lower terminal part of the 3-phase
4) and the power fuse (171) and the load (11!L butsink (16) in each charging part (25j) in the JM KG 1fiIS, as well as the electric field mitigation shield plate (26a), (26 and (27a),
(27b) is provided. Each of these shield plates (23
a), (23b), (26a), (26b),
(27a) and (27b) are curves with smooth edges.
The charging parts t221 and (241, Q
It is bent and formed into Z5+ 11111.

And each photoelectric part +22), +24), +25
In 4, for example, since the photoelectric part (shield plates (23a), (231) in the case of 2-power) of the upper 74B paneathlet part is at the same potential as each live part (24), the photoelectric part (22
1 voltage between adjacent shield plates (23a), (2
3b) will be added between each shield & (23a
), (23b) have a smooth curved periphery, so that small differences in the shield dowels (23a), (23b) l... are made uniform, and the ability to withstand military pressure can be improved. .

By the way, this God's conventional shield machine for Tonkai Yu +11 (2
3a), (23b7. (26a), (26b),
(27a) and (27b) are, for example, as shown in Fig. 3, by taking an aluminum metal plate (28) whose circumferential edge is bent into a smooth curved surface and using (1 metal fitting 129) each charging Qco5. Therefore, the potential between the photoelectric parts (221 and 221) is shared only in the air of the metal plate 12Ptl 1'rJ, and the electric field is Even if we try to make it uniform, there is a limit to the button voltage performance in air, so we cannot hope for any further improvement in the performance of the EJ, and this poses an obstacle to downsizing the panel body (1). It has become.

This invention was made by refining the above points,
This invention provides a shield plate for electric field relaxation, which is characterized in that the surface of the metal plate for electric field relaxation, which is provided to cover a part of a live part, is completely coated with an insulating layer of one resin.

Therefore, according to the middle-range mild A eye roll board of the present invention, the electrical potential of the live parts is 1'F;, and the insulation value t)
The voltage resistance of air can be increased by 11''. ! The 11iii tonnage performance of the original VC loquat 1st day I will be added, and the + of Hikari City mutual 1111
lit'Ml: i river performance 2, charging port 'i'+, Q
Collection X, large TL within! + Voltage resistance i between the city-level box body
If: The size has been improved by two times, the dimensions between the live parts have been reduced, and the size of the single box has been reduced to a minimum.

Finally, this invention will be explained with reference to FIG. 4, which shows its (1) implementation Wi1f.

In the 4th evil, the same symbol as the 3rd figure is the same t/do J-
Assuming that the electric field is relaxed (23;a)
, (231)) is the insulation value of vinyl, nylon, epoxy, and j [oil + 301 total 05 to 31 pm thick]. 'i
Then 4: Ltlj, V-saf.

Therefore, the potential between the photoelectric unit (221) is -11v (23a), (23b) and the air between the two shields (23a).

(23b) each insulation 1 nail grease 1:101 to 4
month, air]1ii1' week pressure performance insulation 4= fat 1
The u pressure performance of 3υj is added 14- and the photoelectric part +221
The tortoise resistance performance of IW1 is greatly improved. An example is shown in Figure 3) and the shield plate ip)
If the size is 12" (115 m + i), the voltage can be reduced to 125 KV, but in the case of No. 4121, it is possible to obtain a 175 KV tonnida gate 1 for i = 115, and the heavy pressure performance is about 50 KV - "2. That means you did it.

Also, insulate IJ1 resin 1311 on the front side of gold 1 ru 1 plate 12 ru.
The light was +4. The voltage performance of 11Ii-1 between part j2Z and the board body +11 of the Taisokugun rank is also 11Ii-1,
By reducing the dimensions of the optical part (221) and the reduction ratio of the dimensions between the optical part (2I! I and the disc body (1), it is possible to make the disc body (1) smaller. For example, the width dimension of the board (1) is reduced from 350 mw to 260 nrm, and the width dimension of the board body (1) is reduced from 1600 mw to 900 mw.
reduced to

[Brief explanation of drawings]

Figure 1 shows the cutting number 2121 of the general distribution board.
Figure 3 shows the paralytic beams 4, 1, and 1, respectively, the shield plates for skewering (each (
3 shows a conventional example, and FIG. 4 shows an embodiment of the present invention. (2 ka... light r4i part, (2:3pe), (23b)
281...Metal machine 1.13f11...Insulating resin. Agent: Patent attorney Fujita 11 @ Fat part Figure 1 Figure 2 Figure 3

Claims (1)

[Claims] ■ A shield plate for "R% Field Relaxation 41" which is made by covering a part of the optical rJi part with an insulation layer 4 on the body of the electric field Relaxation 11.