TW382153B - Self-compressive surge arrester module and method of making same - Google Patents

Abstract

A surge arrester module having an array of MOV's and other components includes an insulative coating for applying an axially-compressive force to the stacked array. The component stack, while held in an axially compressed condition, receives the insulative casing that includes thermosetting resin that, when cured, has a coefficient of thermal expansion that is greater than that of the components of the stack. The coated stack is then cured at a temperature that exceeds the maximum expected temperature that will be experienced by the arrester components. Upon cooling, the components of the array are held in compression and adequate electrical contact with each other is maintained by the casing. Fiberglass strands are included in the casing for reinforcement and cantilever strength. A method of manufacturing the module is also disclosed.

Description

% Patent application No. 86101939 (said Ά (7 a, ·, ♦: \ Chinese manual correction page (February 88)) \ Leng Ru. By coincidence V. Invention description (7's durability and recovery will also weaken . Under these considerations of confrontation, what is the best is about 1. 6 pay. The μ 〇v 12 library degree measured on the front 30 and 32 is best to be 0.75 inches. For those skilled in the art, it should be understood that when the specific metal oxide composition and uniform or uniform microstructure of the entire MOV disc body is known, the thickness of the MO V disc body can determine the level of the operating voltage. In the preferred embodiment, 'The upper and lower front faces of MOV 12 are coated with a spray-type molten aluminum metallization coating 30, 32, which has a thickness of approximately 0.002 to 〇.ΟίΟ inches. MOV 12 in the present invention is preferably as The standard discharger generally does not include an insulation sleeve on the outer surface 31. The contact plate 18 is arranged above and below the MOV 12 and between 30 and 32. It can be shown in Figures 2 and 3 It is stated that the contact plate 18 generally comprises a metal disk having an outer end edge. The contact disk 18 preferably includes upper and lower ribbed surfaces 38, 40. In the form of concentric grooves, the outermost ridges 42 are formed on each of the upper and lower surfaces 38, 40. The electrode 18 is preferably made of annealed aluminum, but it can also be made of copper or other conductive metals. Contact plate 18 The outer diameter is roughly the same as the outer diameter of MOV 12. As shown in Figures 1 and 5, the end plugs 14 are arranged at each end of the series 20. They are shorter round θ pillar blocks made of any conductive material, It is best to be made of aluminum or cast. The outer diameter of the end plug 14 is roughly the same as that of the sleeveless sMov 12 and the contact plate 18 and the outer diameter, and it also contains the core hole of the tooth for receiving the tooth. The guide 4 6 outside the cylindrical surface 4 8 is a nick, wave mark, or other structure, which facilitates the physical connection between the block and the coating 6 in more detail later. The coating 16 holds the component 20 <; m〇v 12, end plug M and contact plate "in a stacked type < end-to-end relationship, while providing axial compression force as needed, -10 (please read the notes on the back before filling this page )

* 1T Printed by the Central Consumers ’Cooperative of the Ministry of Economic Affairs, the printed paper size of paper WSiTcns) A4% ^ 7 2i0X297 mm) Printed by the Consumer ’s Cooperative of the Central Standards Bureau of the Ministry of Economic Affairs, printed by A7 B7 V. Invention Description (1) * Background of the Invention The invention relates generally to power distribution devices. In particular, the present invention relates to a sub-assembly or module, which contains sub-electrical components and is also used in a protection device such as a surge arrester. More specifically, the present invention relates to a device and method for applying axial compressive force to a series of electrical components while holding these components under pressure in an end-to-end relationship within a module. Under normal operating conditions, electrical transmission and distribution equipment is dominated by variable voltages within a relatively narrow range. Due to lightning, switching surges, or other system interference, some electrical networks may suffer from transient or instantaneous voltage levels with higher voltages experienced by equipment under normal operating conditions. Without protection, important and expensive preparations such as transformers, switching devices, computer equipment, and electrical machinery may be damaged or destroyed due to such surge voltages and total current surges. Therefore, the routine method in the electronics industry is to protect such devices from dangerous overload voltages by using surge arresters. Surge arrester is a protective device, which is usually connected in parallel with the relatively expensive electrical equipment. It safely staggers around the equipment or transfers surges induced by overload voltage, thus protecting the equipment and its internal circuits from damage. . When operated, the surge arrester forms a current path to a ground wire that has a much lower resistance than the resistance of the device being protected. In this way, the original surge will be transferred from the discharger to the ground through the surge of the equipment. Once the transient condition disappears, the discharger opens the newly formed circuit to the ground, so it cuts off the distribution or transmission circuit again, preventing the non-instantaneous current of the system frequency, " following " the surge into the ground. The system frequency is known as "power follow current" (power follow current) 0 -4- This paper ft scale is applicable to China National Standard (CNS) A4 specifications (210X297 mm) (Please read the precautions on the back before filling in this Page) Order $ qi 6 if i93 Patent Application No. 9 r ~ n —-____________________ —Where the Articles 丨 V. Invention Description (^ J ^ TMf ^ -1 ------------- oh The relationship between 8 and 4. For the group shown in Figures 丨 and 4, the glazed fiberglass tape 24 is a b-class tree modified foam tape, which is approximately ⑺ 忖 thick by 〇 · 〇〇 leaf width. , And the length is roughly equal to the length of the group row 20. The four-section tapes 24 are applied to the inner base 22 around the group row 20 in separate quadrants, resulting in a longitudinal alignment gap of unwrapped tape. 5G, in the actual configuration described here, has a width β of approximately 0.125 to 0.625 inches. Still reference In Figures 4 and 5, the insulating coating 6 preferably further includes a spiral-wrapped adhesive tape 28 arranged in groups of around 20. The adhesive tape 28 is also preferably a Class B resin-impregnated glass-breaking fiberglass tape similar to the aforementioned adhesive tape 24 The difference is that the adhesive tape 28 can be compared. The adhesive tape 28 again includes glass fiber strands or wire harnesses arranged in parallel, which are fixed in position by embedded thermosetting epoxy resin. In this example, The coating 16 preferably includes 4 circles of adhesive tape 28 arranged around the upper end M and the lower end plug 48 around the outer surface 48, and a plurality of spacers arranged around the center of the group 20. The adhesive tape 28 is wound in about 2 lines per line. The distance between the bands is wrapped around the central part of the group 20. In this form, the coating layer 6 is formed into a polygonal region 29, which is completely composed of the resin layers 22, 25 to 27 and does not contain a fiber tape 2 4 or 2 8. One or more tape sections 2 8 can be used to wrap the group 20 in this way. Printed by the Consumer Cooperatives of the Central Standards Bureau of the Ministry of Economic Affairs (please read the note on the back before filling out this page) tree The month η layers 2 5 to 27 are resin layers that are separately applied as described below .. Outer layer 2 5 2 7 is preferably but not necessarily composed of the same resin as the base layer 2 2. The outer layers 2 to 27 must be tightly attached to the base layer 22 and partially coated to ensure the glass fibers and wiring harnesses in the adhesive tape 24, 28 Wet completely and properly before the module 10 is matured. It may be desirable to use different resins in one or more of the outer layers 25 to 27, such as to increase the ability to wet, may be expected to have -13- Paper size applies to China National Standard (CNS) A4 specification (210 × 297 mm)

The traditional 疋 surge arrester basically consists of-only the outer army or frame made of electrically insulating material,-the electric terminal is located at the corresponding end of the housing, and the second is to connect the line conductor (Hne-poteniial conductQr) to the ground Inter-discharger: and ― series of other electrical components between the terminals. To form a competition circuit, 7L pieces basically include a set of non-linear resistors that change with voltage: pieces. Some of the characteristics of non-linear resistors or varistors are that they have higher resistance under normal steady state voltage, but the #discharger is extremely low when subjected to instantaneous overload voltage. Different types, it can also include one or more ignition interval assemblies placed in the insulation cover, which are electrically connected in series with the rheostat. Some existing dischargers also include a conductive gasket element aligned coaxially with the varistor and spacer assembly. The array components of the traditional discharger also include various types and shapes of electrodes. Printed by the Consumer Cooperatives of the Central Bureau of Standards of the Ministry of Economic Affairs --------- ^^ 1 (Please read the precautions on the back before filling in the //, η. In order to make the discharger function properly, in the group It is very important to maintain contact between various surge arrester elements in the column. To achieve this, an axial load is placed on the elements of the group. This load is basically applied by using a spring in the frame. Promote the stacked components to join with each other. Good axial contact is very important. 'Ensure a lower contact resistance between adjacent front faces of the components, ensure a more uniform current distribution within the components, and arrange the discharger components and ends in the group Provides good heat transfer. Another traditional way of supplying axial force during supply is to wrap the stacked discharger elements with fiberglass, compressing the elements axially within the stack. This type of prior art surges Examples of electrical appliances are contained in U.S. Pat. Nos. 5,043,838, 5,138,517, 4,656,555, and 5,003,689. These patents—general descriptions are equivalent: fine techniques to wrap fibers around the end of a discharger element stack, -5- this paper Scale applicable National Standard (CNS) A4 Specification (210X297 mm) No. 86101939 Patent Application Chinese Specification Revision Sheet (February 88) A7 B7 V. Description of Invention (19)] j. X. 7; ·; Central Ministry of Economic Affairs Standard Bureau staff consumer cooperatives printed the main components in the printed labels 10 Module subassembly 12 Metal oxide rheostat 14 End plug 16 Insulation coating 18 Contact board 20 Group of electronic components 21 Parent material 22 Including base Resin layer 24 Axially aligned fibrous tape parts 25, 26, 27 Outer resin layer 28 Spiral wrap tape parts 29 Polygonal area 30 Upper surface of the cylinder plate 31 External cylindrical surface 32 Lower surface of the cylinder plate 34 Contact Outer edge of the plate 38 upper surface 40 lower surface 42 ridge 44 palpitate L 46 guide bar 48 outer cylindrical surface 50 longitudinal alignment gap 60 electricity; 1 battery arrester \ 62 polymer cover 64 hook 65 ground Wire Insulator 67 Car Rod 100 Module 116 Insulation Coating 120 Group Electronic Components 121 Parent Material 122 Base Material of Resin Material 125 Outer Layer of Resin Material 126 Fiber Strand 210 Module 211 Insulation Coating 224, .226 axially aligned tape section 225 outer layer 227 arched area 228 spiral wrapped tape section 229 arched area 230 weaker wall area (please read the precautions on the back before filling this page) -21a This paper size is applicable to Chinese National Standard (CNS) A4 (210'〆297 mm). Printed by the Shellfish Consumer Cooperative of the Central Standards Bureau of the Ministry of Economic Affairs. A7 --------- B7 V. Description of the invention (3) · Apply appropriate axial force to the components in the stack. The use of some of these techniques' needs to build human-like elements in the stack, such as special ends to keep the fibers in a specific position. (Patent No. 8008) 'or generating a shoulder pad so that the fiber can be entangled (eg, US Patent No. 5,138,517). In addition to maintaining axial compression, these stacked discharger elements must allow gas to evolve when the discharger cannot safely vent from the discharger. Occasionally, a transient overvoltage condition may cause some damage to one or more resistive elements. Sufficient enough damage can cause discharge in the frame of the arrester, resulting in indirect heat generation. At the same time, when the internal components in contact with the arc vaporize, the gas is discharged. This gas is discharged, causing the pressure in the arrester to rise rapidly, until it is released by the pressure release fixture or by the arrester's frame. The failure mode of the arrester under this condition may include the ejection of component or component fragments at high speed and various side-to-side directions. This failure is potentially dangerous to nearby people and equipment. The attempted design and construction of the discharger will not cause catastrophic failure or damage; One such discharger is described in U.S. Patent No. 4,404,614. The discharger has a non-fragmented gasket and an outer frame, and a pressure release film is placed on its lower end. A tamper-resistant arrester has also been published in U.S. Patent Nos. 4,656,555, 4,930,039, and 5,113,306. An arrester having a pressure relief device formed at its end is described in U.S. Patent Nos. 3,727,108, 4,001,651, and 4,240,124. U.S. Patent No. 5,043,838 discloses a fiber-wrapped discharger module that includes through-holes in a cross pattern of wraps. These through-holes are filled with gas-filled resin -6- This paper scale is applicable to China National Standard (CNS) A4 (210X297 cm)

(Please read the note ^ h on the back before filling out this page) A7 B7 V. Description of the invention (4) or similar insulating materials, which are allowed to rupture and allow gas to escape. However, regardless of this progress, the current discharger still occasionally fails and the component or component fragment is ejected. This may be partly due to the fact that when the internal components in these arresters fail, the synthesized arc gasification elements, at the same time, generate gas at a rate at which ventilation cannot be fast enough to prevent the arrester's hub from intercepting it. Therefore, there is still a need for a technology for the discharger, which, if it fails, will fail in a non-rupture and safe manner. There is also a need for the components of the arrester, which are axially compressed without the use of springs. There is also a need for a mounting technology that can simply axially compress a series of distributor components without the need for elaborate and expensive manufacturing processes or adding specific components to the component housing. The fixture is preferably easily applied to the outer surface of the stacking element. Another advantage is the characteristics contained in the compression fixture, which can enhance the tension and suspension strength of the arrester assembly. In addition, the device should be able to provide a ventilation device to release air pressure and prevent the failure of electrical components under dangerous conditions. At the same time, it should be able to provide good consolidation at each interface of the MOV without complicated assembly. Process or expensive waste. Summary of Invention Printed by the Consumer Cooperatives of the Central Standards Bureau of the Ministry of Economic Affairs (please read the notes on the back before filling out this page) The present invention includes a surge arrester subassembly, which contains a large number of stacks arranged in axial groups Electrical components and an insulating coating arranged on the outer surface of the pumping group. The coating is most fixed on the outer surface of the group, and simultaneously applies axial and radial forces to the group, and the group maintains good electrical contact with the group of components. According to the present invention, the thermal expansion coefficient of the coating is greater than the thermal coefficient of the electrical component, and it is aged at a temperature within the operating temperature range of the component. When the coated group is cooled below the curing temperature, The coating is more than electrical components. 7 · The paper scale is applicable to the Chinese National Standard (CNS) A4 specification (210X297 mm) 5. Description of the invention (5 Α7 Β7 Green is received, thus generating compressive force on the array. The present invention can also include longitudinal and peripheral fiber reinforcement in the coating, and its reinforcement preferably includes glass fiber. Those skilled in the art will understand that this coating can be applied It is applied to the desired part of the group to produce a predetermined coating thickness. Brief Description of the Drawings For a detailed introduction of the preferred embodiment of the present invention, please refer to the drawings. Sectional view of the sub-assembly module; Figure 2 is a top view of the grooved electrode of the sub-assembly module shown in FIG. 1; FIG. 3 is an enlarged view of a part of the sub-assembly module shown in FIG. 1; Elevation of the module, its edge layer is partially covered Fig. 5 is a top view of the secondary winding module shown in Fig. 1; Fig. 6 is an elevation view of the module of Fig. 1 in the middle stage of assembly; Fig. 7 is an end view of the module of Fig. 1 in another stage of assembly Figure 8 is an elevational view of a surge arrester using the χ sub-assembly module; Figure 9 is an elevational view of a modified * comprehensive configuration example of the present invention, a part of which is partially cut away; and 10 is a top view of another modified practical example of the present invention. Description of the Invention First, referring to FIGS. 1 and 8, a modular assembly 10 of an electronic component in accordance with the present invention is shown. 〇 (Figure 8) in the distribution surge arrester, the number has a special practicality. Therefore, in order to make the best description of the special inspection and advantages of the name, the module 10 will refer to 10KA weight 10KV (8.4 KV MCOV) distribution level surge arrester 6 〇 to explain its group level (Please read the precautions on the back before filling this page)

-8 -

Printed by the Consumer Cooperatives of the Central Standards Bureau of the Ministry of Economic Affairs and the description of the invention (6 Yes, it should be understood that the present invention is not limited to use in power distribution-level surge arresters or surge arresters of any size or power, but should be used in It is practical and advantageous to keep the electronic components in a row or row under axial load in any device. Or referring to FIG. 1 again, the module 1 〇 generally contains a set of electrical components in a row 2 ， It is stacked in an end-to-end arrangement, and is maintained in that row by the pulling force provided by the insulating coating 16. The present invention relates to the coating 16, but is not limited to the electronic components in the group 20 Any specific type, number or size. But for the sake of explanation, the group 20 shown in Figure 1 contains three metal oxide rheostats L2 (hereinafter referred to as " MOV "), one end Plug 14 and a pair of contact plates 18. Each MOV 12 is composed of a metal oxide, which is formed into a short cylindrical disc body with an upper surface} 〇, "lower surface 3 2 and an outer cylindrical surface? ^ ^ M〇 V 12 metal oxides can be phase-same as used in any high The material of the high-voltage, high-voltage IMV disc body is also preferably composed of zinc oxide. See U.S. Patent No. 3,778,743 of Matsushita Electronics Industry Co., Ltd., Osaka, Japan, which is incorporated herein by reference. MOV 2 will have a uniform microstructure in the entire MOV disc, and the index η 'of the Mov 12 zinc oxide composition will be within the range of 0 to 25 when the system voltage is stable. The best The index η 値 is about 20. The circular cross section of MOV 12 preferably has an outer diameter of 1 to 3 inches, and 俾 ensures that it has a sufficient surface area between about 0785 and 707 squares to maintain the desired durability of MOV. At the same time, "M0V is also expected to have the smallest cross-sectional area to reduce the size, weight and cost of the discharger. However, when the size is reduced, the disc body 9- This paper size applies to Chinese national standards (CNS ) A4 specification (210X297), (please read the precautions of back-to-back before filling out this page). Dream · Order% Patent Application No. 86101939 (Said Ά (7 a, ·, ♦: \ Chinese manual amendment page ( February '88) \ Cold as. 、 Explanation of the invention (The durability and recovery of 7 will also be weakened. Under the consideration of these adversarial measures, what is the best outside is about 1.6 pay. The μ 〇v 12 measured between 30 and 32 on the front. The degree of storage is preferably 0.75 inches. For those who are familiar with this technology, it is better to know that when the specific metal oxide composition and uniform or uniform microstructure of the entire MOV disk body are known, the thickness of the MO V disk body can be determined. _Determining the level of operating voltage. In the preferred embodiment, the upper and lower front faces of MOV 12, 30, 32 are coated with a spray-type molten aluminum metallized coating, which has a thickness approximately equal to 0.002 to 0. ΟίΟ inches. The MOV 12 in the present invention preferably does not include an insulating sleeve on the outer surface 31 as if it is used in the standard discharge system. The contact plates 18 are arranged above and below the MOV 12 between 30 and 32. It can be clearly shown in FIG. 2 and FIG. 3 that the contact plate 18 generally includes a metal disk with an outer edge. The contact disk 18 preferably includes upper and lower ribbed surfaces 38, 40. The outline of the main concentric groove pattern is to The outermost ridge 42 is formed on each of the upper and lower surfaces 38, 40. The electrode 18 is preferably made of annealed aluminum, but it can also be made of copper or other conductive metal. The outer diameter of the contact plate 18 is roughly the same as the MOV The outer diameter of 12. As shown in Figures 1 and 5, the end plugs 14 are arranged at each end of the series 20. They are shorter round θ pillar blocks made of any conductive material, preferably aluminum. Or cast. The outer diameter of the end plug 14 is roughly the same as that of the sleeveless sMov 12 and the contact plate 18 and the outer diameter, and it also includes the core hole of the tooth, which is used to receive the guide of the tooth 4 and 6 pieces. The outer cylindrical surface 48 is nicked, corrugated, or other structure, so as to be physically connected between the block and the coating 丨 6 in more detail later. The coating 16 holds the component 20 < mOV 12, end The plug M and the contact plate are in a stacked < end-to-end relationship, while providing axial compression force as needed, for -10 (please read the note on the back first Item and then fill in this page)

* 1T Printed on paper by the Consumer Cooperatives of the Central Standards Bureau of the Ministry of Economic Affairs, paper size, WSiTcns) A4% ^ 7 2i0X297 mm) 5. Description of the invention (8) Ensure low contact resistance between various electronic components and uniformity within the components Current distribution. The coating 16 will be fixed to the internal components as described in detail later, while further sealing the electronic components in the group 2 · 0, avoiding the entry of unwanted moisture or other impurities, and providing enhanced tensile strength and The mechanical force is on the stacked group 20, and at the same time, the discharger fails to provide a controllable gas path. Referring now to Figures 4 and 5, in its preferred form, the coating 16 ^ _ generally includes a resin layer and a plurality of axially aligned fibrous tape portions 24 and a matrix 21 of a spirally wrapped tape portion 28. Its parts 24 and 28 are embedded in the matrix 21. The matrix 21 will include a resin layer of the base and three outer resin layers 25 to 27 as shown in more detail later (FIG. 4). Resin layers 2, 2 and 25 are thermosetting resins and are selected from the following materials: polymer resins, phenolic resins and epoxy resins. Preferred resins today include incompletely combustible ingredients and granular fillers, such as those who are familiar with the art > control one of them, improve the thermal travel coefficient, and increase tensile strength. The resin layers 22, 25 to 27 may include a single resin layer, or they may include 2 to 4 different resins. The resin selected for the outer layers 22, 25 to 27 may have a heat-like sufficient ripening temperature and be compatible with the other resin layers constituting the parent material 2 i. In addition, the mother resin must be stable under high temperature and high voltage, that is, the curing resin in the mother material 2 i. When the components in group 20 are subjected to the temperature and voltage during operation, they must not lose polymerizability or Loss of consolidation. Normal operating temperature is basically between _60 degrees and + 60 degrees. The failure mode temperature can be as high as 350 ° C. The materials selected for the outer layers 22, 25 to 27 should not have a heat drop at the failure temperature of the electronic equipment or more. -11-

A7 B7 Printed by the Consumer Cooperatives of the Central Bureau of Standards of the Ministry of Economic Affairs 5. Description of the invention (9) According to a better practical example, the most important thing is that the insulation coating 16 has a thermal expansion coefficient greater than that of the electronic components in group 20 Thermal Expansion Coefficient. This will keep the coating 16 at any temperature below its curing temperature, and the coating 16 will generate axial and radial pressures and forces on the group 20. The components in Group 20 basically have an average thermal expansion coefficient in the range of 5 X 106 to 25 χ 106 inch / inch / r. Therefore, it is expected that the material constituting the coating 16 has the heat Expansion factor, at least between 5 X 106 and 250 X 106 inches / inch Factory C. Each outer layer 2 2, 2 5 to 27 can be applied by traditional spraying, dripping, rolling, powder dissolving or liquefaction bed methods, which is applicable or convenient, depending on the special consistency of the resin material and the equipment used. set. In a preferred embodiment of the present invention, the outer layers 22, 25 to 27 of the coating layer 16 are obtained by processing a conventional liquefied bed. As can be clearly shown in FIG. 4, the base layer 22 is coated with a cylindrical surface 31 other than sMov 12, an outer surface 48 d of the plug 14, and an outer edge 34 of the contact plate 18, so that it has an approximate 0.00 · 1 to 0.015 inch uniform thickness. The selected base layer 2 2 has high binding force with MOV 12. Due to its ability to adhere to the assembly of 20 elements, the base layer 22 forms a fastening base for the other components of the coating 16, especially for the adhesive tapes 24, 28 and the outer layers 25-27. The resin of the base layer 22 preferably reaches the hardness of the first level faster than the outer layers 25 to 27, so that the adhesive tape portion does not directly contact the components of the group 20 as described below. Referring now to Figs. 4 and 5, it is preferable that the fiber blanket portions 24 aligned axially are resin-impregnated glass fiber blankets composed of a plurality of glass fiber strands or threads, which are arranged one after the other in parallel, and at the same time Keep the grade B thermosetting resin parallel or -12 by prepreg or burying in or around the wire harness- This paper size applies to China National Standard (CNS) A4 specification (210 × 297 mm) (Please read the note on the back first Please fill in this page again for the item} Order $ qi 6 if i93 Patent Application No. 9 r ~ n —-____________________ —Fine Articles 丨 V. Description of Invention (^ J ^ TMf ^ -1 ---------- --- oh 8 4 relationship. For the group shown in Figures 丨 and 4, take the glass fiber tape 24 is b-grade tree-type modified foam tape, which is about 〇⑺ 忖 thick multiplied 〇 · 乃〇 Leaf width, and the length is roughly equal to the length of the group of 20. The four sections of the tape 24 are applied to the inner base 22 around the group of 20 in a separate form in the respective quadrants. The vertical alignment gap 5G, in the actual configuration described here, is about 0.125 to 0.625 inch width β. Still Considering Figures 4 and 5, the insulating coating 6 preferably further includes spirally wrapped adhesive tape 28 arranged in groups of around 20. The adhesive tape 28 is also preferably the same B-grade resin-impregnated glass-breaking fiber as the aforementioned adhesive tape 24 Adhesive tape, the difference is that adhesive tape 28 can be compared. Adhesive tape 28 again includes glass fiber strands or wire harnesses arranged in parallel, which are fixed in place by embedded thermosetting epoxy resin. In this example The coating 16 preferably includes 4 circles of adhesive tape 28 arranged around the upper end M and the lower end plug "outside the outer surface 48, and a plurality of spacers arranged around the center of the group 20. The adhesive tape 28 is approximately 2 in a straight line. The distance between the tapes is wrapped around the central part of the group 20. In this form, the coating layer 6 is formed into a polygonal area 29, which is completely composed of the resin layers 22, 25 to 27 and does not contain a fiber tape 2 4 or 2 8. One or more tape sections 2 8 can be used to wrap groups 20 in this way. Printed by the Consumer Cooperatives of the Central Standards Bureau of the Ministry of Economic Affairs (please read the notes on the back before filling out this page) Tree moon η layers 25 to 27 are resin layers separately applied as described below .. Outer layer 2 5 to 2 7 are preferably but not necessarily composed of the same resin as the base layer 2 2. The outer layers 2 to 27 must be tightly attached to the base layer 22 and partially coated to ensure the glass inside the adhesive tape 24, 28 The fibers and harnesses are completely and properly wetted before the module 10 is cured. It may be desirable to use different resins in one or more of the outer layers 25 to 27, such as to increase the ability to wet, and may be expected to have- 13- The size of this paper applies to Chinese National Standard (CNS) A4 (210 × 297 mm). Printed on A7 B7 by the Consumer Cooperatives of the Central Standards Bureau of the Ministry of Economic Affairs. 5. Description of the invention (11) Resin with lower viscosity or slower curing rate. In any case, each resin must be compatible with the other resins selected. In addition, it is better that the outer layer 25 to 27 resin is slower to mature than the tomb layer 2 2 resin, so that the tape sections 2 4 and 2 8 can be cured before the resin is properly prepared or hardened to prevent the tape from pressing into the front skin layer. Pressed and embedded in the front resin layer. After the final curing is completed, the thickness of the coating 16 is preferably between about 0.005 and 0.050 inches. The method for manufacturing the module Γ 0 of the present invention generally includes the following steps. First, groups of 20 elements are heated to between about 150 and 275. (: Between the temperature, the final temperature of this pre-heating step, depending on the type and characteristics of the coating 16 resin. Especially for the specific pre-heating temperature is selected from 150 to 200. . (: The lower the temperature range to reduce the gluing rate 'and the final curing temperature is set in the range of 225 to 275 C. Once heated, the components are then placed in the traditional V-block fixture in the desired axial relationship Inside. An axial clamping force between about 0 and 15,000 psi is applied to the end plug 1 * of the i group of 20. For easy manufacturing, the component group is fixed on a horizontal surface. For the coating process In order to maintain a good contact, sufficient force is needed to make the components contact the components. In order to facilitate the deformation of the ribs on the contact plate 18, the preferred clamping force is about 50 to 150 psi. The clamping force should be sufficient to ensure] ^ 1 ￥ 12. The contact plates 18 and end plugs 14 are in complete contact on all of their approximated adjacent areas. Good contact between adjacent elements in group 20, the average current distribution for stacking group 20, Low resistance and optimal heat dispersion are important. " When the axial force is applied at a predetermined magnitude, the ridges of various degrees on the contact plate 18 bite or embed themselves in the abutment surfaces 30 and 32 of the sM0V 12, and also compensate the MOV surface 30 and 3. Day, 丨 π,, 3 2 foot irregular shape. In addition, the contact plate j 8 ---------— (Please read the precautions on the back before filling this page) Order 1 «·

A7 B7 Printed by the Consumer Cooperative of the Central Standards Bureau of the Ministry of Economic Affairs 5. Description of the invention) During the operation of the surge arrester, it compensates for a certain degree of non-uniformity relative to the heat rise of MOV 12, and the contact plate 18 is suddenly raised The ridges are more or less curved, allowing continuous electrical contact.揍 The contact plate 〖8 can also be used to prevent the resin layer 2 of coating i 6 from 2, 2, 5 to; k 7 is not matched or substantially irregular in the shape of the corresponding surface 30, 32, or module 20 adjacent to the MOV. Leakage on other elements of the shape. The most important is the outermost ridge 42 of the plate contact plate 18, which forms a seal around the periphery of each MOV-electrode-MOV interface. Since the array elements are axially loaded, the base layer 2 2 is evenly applied to the outer surfaces of the elements in the array 20. The thin coating of the first outer layer 25 (from 3,000 to 100,000 pairs of thickness) is applied immediately before the fast-gluing layer 22 starts to be glued. The hardening rate of the first outer layer 25 is slower than that of the base layer 22, which allows the fiberglass cloth section 25 to be partially embedded in the outer layer 25. The leather layers 2 2 and 2 5 can be used to resist the fiberglass cloth segment 24 to contact the radial outer surface of MOV 12, the end plug 14 and the contact plate 18 ^ It is very important to avoid this contact% because even though the fiber tape has been soaked in the resin, but There are still a few degrees of pores or gaps. It is important to reduce the amount of pores present in any dielectric coating, but it is especially important when close to the active electronics to achieve good high current pulse durability. After the outer layer 25 is applied, the adhesive tape strip 24 is pressed into the first outer layer 25 and partially buried. The adhesive tape section 24 is axially aligned, and at the same time, it is peripherally divided around the outer surface of the inner elements of the group 20. At this time, the module 10 has the form shown in FIG. 6. After the tape section is embedded in the first outer layer 25, the partially assembled module 10 is coated with the second outer layer 26. The important function of the outer layer 26 is to ensure that the glass fiber strands or bundles are completely wetted (resin is saturated), and at the same time to ensure that no gaps are created in the coating 16. _ '-15- The paper ft scale is applicable to China National Standard (CNS) A4 Specification (21QX297) Chu (Please read the precautions on the back before filling this page)

A7 B7 V. Description of the invention (13) After the outer layer 2 6 is coated with adhesive tape 28. The tape is wound from one end of the bank 20, and is wound about 4 times around the outer surface 48 of the score of the upper end plug 14, and then wound around the center of the bank 20 in a spiral pattern. The winding step is preferably completed after winding the last 4 turns of the adhesive tape 28 around the lower end plug 14. The adhesive tape 28 is wound around the array 20 when the outer layer 26 is still relatively soft, so that the adhesive tape 28 can be at least partially buried in the outer layer 26. FIG. 7 shows the module 10 at this assembly stage. After the adhesive tape 28 is applied, the module 10 is applied with the outermost layer 27. Although the outer layers 25 to 27 may contain different resins, currently the outer layers 25 to 27 are preferably composed of the same resin material. In addition, although the coating 16 has three outer layers 25 to 27 of the resin material applied separately as described, practically any desired number and composition of outer layers can be applied. Although it is better to have the three outer layers in the presently preferred embodiment, the important function of the outer layers 25 to 27 is to completely soak the fibers in the adhesive tapes 24 and 28, and because of the resin materials and the adhesive tapes 2 and 4 Various factors of characteristics " Different reasons, more or less number of outer layers can be applied. Printed by the Consumer Cooperatives of the Central Standards Bureau of the Ministry of Economic Affairs (please read the precautions on the back before filling this page). After the final outer coating is applied, the group 20 and compressed by the clamping mechanism (not shown) are still fixed. The coating 16 is placed at the curing temperature so that the skins 22 and 25 to 27 intersect and harden. The matrix 21 containing the resin layers 22 and 25 to 27 is matured at a temperature higher than the normal steady-state operating temperature of the module, which is approximately 60. (:: The final maturation preferably occurs at a temperature higher than the highest temperature experienced by the module 10 during operation. For example, when the module 10 is used in a surge arrester, the parent material 21 should be at Mature at a temperature higher than the temperature experienced by the module during the transient over-voltage process. This-the temperature may be, for example, 25 ° C or higher. Therefore, the resin selected for the matrix 21 is preferably that

V. Description of the invention (14) A7 B7 Consumption cooperation of employees of the Ministry of Economic Affairs of the Ministry of Economic Affairs printed some resins that were cured at a temperature of 250 C or higher. In the final curing process, the modules shown in Figures 1 and 4 are basically left in the oven for about 10 to 30 minutes at a predetermined curing temperature before being removed from the oven and cooled at room temperature. Since the resin layers 22, 25 to 27 will not be fully cured before the final curing process', the skin layers 22, 25 to 27 become combined with each adjacent layer instead of forming separate and distinguishable layers. ° In some cases, shrinkage due to aging is sufficient to cause a proper compression force, so that the assembly does not need to be cured at elevated temperatures. However, it is preferable that the thermal expansion coefficient of the insulating coating layer 16 after curing is larger than the thermal expansion coefficient of the electronic components in the group 20. As a result, when the module 10 is cooled, the insulating coating 16 shrinks more than the group 20, so that an axial and radial compression force is generated on the module 20, ensuring that the components in the group 20 are still protected. The stacking relationship is the same, and it maintains good electrical conductivity among the components in group 20. If a coating with two thermal expansion coefficients is used and the shrinkage during curing is not considered, the curing temperature must be higher than the temperature experienced by the component at the operating temperature of the design 圩 to ensure the compressive force at the operating temperature. The severest temperature experienced by the arrester at present is between 25 and 300. (: Within the range. If using a resin with a lower thermal expansion coefficient, the low temperature S operation (effect should be considered. In this case, the shrinkage during curing can be minimized to prevent the coating from cracking.) In each case, the force at the lowest temperature is the greatest: In any case, the objective of the present invention is to reconcile the shrinkage and thermal expansion characteristics during the reaction (aging) process, to maintain axial compression at the coating site, and to maintain good defamation around the parts. Electrical interface. The technology of reconciling heat and mismatch is well known to those skilled in this technology. The creative aspect of the present invention is to use

(Please read the precautions on the back before filling this page) Order --- II ϋ-lin ·, I -1 m A7 B7 V. Description of the invention (15) * Some coating parameters are in the coated electronic components. In the stacking group, the contact pressure is controlled. The extent of the surge is limited by the hardness and tensile strength of the coating. In general, a certain degree of scalability is desired, and / or the compression force is controlled in a narrow range. If the material is too hard or brittle, the force generated on the MOV element will rise sharply when the temperature drops, and if the coating is more or less soft or elastic, the coating will begin to bend when the force increases. Among the currently preferred resins, rubber filler particles such as vinyl acetate (EVA) or ethylene propylene rubber (EPR) can be used to enhance the softness of the cured resin. These systems can withstand large mismatches without breaking or loosening. The ultimate limits for mismatch and / or shrinkage have not been measured, but trial and error can be used to determine acceptable material parameters. A treated discharger module capable of supporting

Heated to a thermal shock cycle of 120 ° C for 50 cycles, and then quenched under two high current pulses such as those required in accordance with ANSI C62.11-1991 specifications. The sample is then tested for damage and changes in operating characteristics. Long-term multiple stress tests (ENEL DY 1009 specifications) are used to ensure that the electrical interface remains intact. A material system that meets these test specifications is then subjected to a full set of design tests in accordance with ANSI 062.1, 1991 and IEC 99.4-1993 specifications. Printed by the Consumer Cooperatives of the Central Standards Bureau of the Ministry of Economic Affairs (please read the precautions on the back before filling this page) Hardened parent material 2 related to the longitudinally aligned glass fiber tape section 24 and spiral wrapped tape section 2 8 1. Provide sufficient suspension strength of the module 10. Allow the module to withstand external forces applied to the group when using such as a surge arrester, while the arrester and module will withstand wind and other uncertain but occasional Forces that occur, such as those applied to the arrester by hydropower personnel during transportation or installation. -18 _ This paper size is in accordance with Chinese National Standard (CNS) A4 (210X 297 mm)-Central Government Bureau of the Ministry of Economic Affairs Lingong Consumer Cooperative Seal A7 _ —_ B7 V. Description of Invention (16) The necessary strength and rigidity are outside the module 10, and the insulating coating 16 additionally includes a ventilation device, which allows the module 10 to clear the gas crosses that may be released when the discharger component fails. Especially the polygonal area 29 can be used as a weak-walled area. 'When a component fails, ventilate through it. Particularly special is that when MOV 12 and other internal components in group 20 fail, the pressure in the module 10 will be established when the adjacent material is burned by internal arcing. When the arc burns, the pressure in the module 10 is increased to a level at which it can cause the weak-walled area 29 to burn, which releases the internal pressure and clears the exhausted gas. Mainly referring to FIG. 8 ′, a distributed-level surge arrester 60 »discharger 60 using the aforementioned module 10 is shown, which generally includes a module 10 'aggregate military component 62 and a discharger hook 64. The module 10 is arranged in the polymer military component 62, and it fills any gap between the module 10 and the inner surface of the cover member 62 with an RTV dream rubber compound (not shown). A coupling pattern 46 of a car tooth is arranged in the heart hole 44 of each end plug 14. The upper rod 46 projects from the cover member 62; the 俾 engages with a plug assembly (not shown) at one end. The lower guard 46 protrudes from a through hole (not shown) in the hanging fishing 62, and is connected to the ground insulator 65. A car-like tooth 6 7 protrudes from the insulator 6 5 to engage the ground terminal assembly (not shown). The cover member 12 is sealed around the upper and lower ends of the module 10. Referring now to FIG. 9 ′, a modified practical configuration example of the present invention is shown, which includes a module 100, including a group of electronic components 120, including the Mov 12, the contact plate 18 and the end plug 14 as described above. . In this real configuration example, the module includes an insulating coating layer 116 composed of a parent material 121. The β parent material 121 includes a base layer of a resin material 122, which is roughly the same as the resin layer described above with reference to [7]. twenty two. The parent material 21 further includes one or more layers of resin material outer layer 125, which contains shorter fiber strands 126 and is mixed with the resin material. Β base layer 122 -19- t-size applicable to the National Solid Standard (CNS) Ai Specifications (210X297mm): '--One I Jk ---- “Pack-(Please read the precautions on the back before filling this page)

, 1T Printed by the Consumer Standards Cooperative of the Central Bureau of Standards of the Ministry of Economic Affairs A7 __ B7 V. Description of the invention (17) and the outer layer 125 are applied by liquefied bed or other known technology, while referring to the insulation coating 16 mentioned earlier Narratively mature. After curing, the insulating layer 116 applies an axial compressive force to the arrester elements in the line array 120. The coating 116 has a Gero coefficient that is greater than the thermal expansion coefficient of the components in the group 120. In addition, the glass fiber strands 126 arbitrarily arranged in the outer layer 125 provide strength and rigidity to the module 100. Referring now to FIG. 10, $ group 210 is shown in a top view, and another embodiment of the present invention is best published. According to the present invention, the module 21 includes an axially arranged MOV 12 and a contact plate 18 and an end plug 14, all of which are coated with an insulating coating 211 and kept in axial compression as described above. The honey layer 211 includes the resin layers 22, 25 to 27 as described above. The coating 211 additionally includes a plurality of axially aligned prepreg tape sections 224, 226, which are the same as the tape sections 24 described above. However, in this practical example, the lateral edges of the innermost tape section 224 are overlapping, so that the entire periphery of the electronic "component group row" is covered by the axially aligned tape section 224. Module 210 additionally includes The axially aligned tape section 226 'is arranged at a predetermined position around the outer layer 225, and provides a bow-shaped area 227 having a plurality of thicknesses of tape 224, 226, and others. A bow-shaped area 229 having a single-thickness of tape 224. A May be the same as before—the resin layers of the outer layers 25 to 27 described above are applied between the adhesive tape layer 225 and the adhesive tape section 226 'while another skin layer is coated on the adhesive tape section 226 to completely wet all the adhesive tape sections After 224 and 226, it is coated on the module 21. Therefore, the spiral wrap tape section 228 is coated on the outside of the tape sections 224 and 226, and at the same time, the final resin outer layer is coated. When the module 210 is cured, Module 21〇 will contain a weaker wall surface area 230 like area 22 9 compared to area 227. _ -20- This paper size it financial standard (CNS) A4 specification ⑺Qx 297_ ^ Chu); ~ ( Please read the notes on the back before filling Page)

Printed by the Consumers' Cooperative of the Central Bureau of Standards of the Ministry of Economic Affairs Α7 Β7 V. Description of the Invention (18). It has a thinner glass fiber reinforced area. As understood by those skilled in the art, the weaker wall region 230 and region 227 may have tape sections 224, 226 of any number of thicknesses, as long as the weaker wall region 230 has less tape 224, 226 thickness than the region 227. Therefore, the above-mentioned actual configuration example has a specific response in the electro-discharge arrester. Compared with a surge arrester having a higher voltage or energy rate than the discharger shown in circle 8, it has A large number of components, or the MOVli mentioned above, is larger. Although the preferred embodiment of the present invention has been shown and described, those skilled in the art can modify it without departing from the spirit of the present invention. For example, ‘in addition to using pre-impregnated glass fiber tapes 24 and 28, unimpregnated glass fiber bands can be used to provide the desired strength and rigidity to the module! 〇 As long as the strand or harness is sufficiently wet with each of the front resin layer and the rear resin layer. In particular, the present invention does not require the use of parallel wires-strands or glass fiber harnesses of the non-adhesive type other than tapes such as Sao cloth 24 and 28, which can be completely immersed and embedded in the resin layer of the later performance. Therefore, the actual configuration examples described here are only examples and not limitations. The invention is subject to many variations and modifications, all of which are covered by the scope of the following patent applications. -21-(Please read the notes on the back before filling this page)

Ping You 0 ~ S NG Glynn No. 86101939 Patent Application Chinese Specification Revised Page (February 88) A7 B7 V. Description of Invention (19)] j • X. 7; ·; Staff of Central Standards Bureau, Ministry of Economic Affairs Description of the main components in the printed drawings of the consumer cooperatives 10 Module sub-assembly 12 Metal oxide varistor 14 End plug 16 Insulation coating 18 Contact board 20 Electronic components 21 Matrix 22 Resin layer including base 24 Axial aligned fibrous tape parts 25, 26, 27 Outer resin layer 28 Spiral-wrapped tape parts 29 Polygonal area 30 Upper surface of the cylinder plate 31 External cylindrical surface 32 Lower surface of the cylinder plate 34 Outside the contact plate End edge 38 Upper surface 40 Surface lower surface 42 Raised ridge 44 Heart palate L 46 Guide bar 48 Outer cylindrical surface 50 Longitudinal alignment gap 60 Electricity; 1 Discharger \ 62 Polymer cover 64 Hook 65 Ground wire insulator 67 car rod 100 module 116 insulation coating 120 group of electronic components 121 mother material 122 base layer of resin material 125 outer layer of resin material 126 fiber strand 210 module 211 insulation coating 224, .226 axial alignment Tape section 225 outer layer 227 arched area 228 spiral wrapped tape section 229 arched area 230 weaker wall area (please read the precautions on the back before filling this page) -21a This paper size applies to Chinese national standards (CNS) A4 size (210'〆297mm)

Claims (1)

A8 B8 C8 D8 Printed by the Consumers 'Cooperative of the Central Standards Bureau of the Ministry of Economic Affairs to apply for a patent scope i.-The subassembly' for surge arresters, including: Most electrical components, stacked in an axial group, this group The column has-an outer surface; and. 'An insulating coating arranged on the outer surface of the axial group column, the coating consolidates the outer surface of the group of columns' while applying an axial force to the group of columns, 俾The components in the group are electrically connected to each other; the thermal expansion coefficient of the coating is greater than the thermal expansion coefficient of the electrical component. 2. According to the sub-assembly of item j of the scope of the patent application, the coating includes a parent material and a reinforcing material, and the parent material and the reinforcing material are generally stable when subjected to high voltage and high temperature. 3. The subassembly according to item 2 of the scope of patent application, wherein the matrix contains at least one thermosetting resin. 4: The subassembly according to item 2 of the scope of patent application, wherein the matrix contains at least two thermosetting resins, and the tree is intended to be a compatibilizer. 5. The sub-assembly according to item 3 of the patent application park, wherein the thermosetting resin is selected from the group consisting of polyester, lime acid and epoxy resin, and when used in a surge arrester, it has The aging temperature is greater than the total expected failure mode temperature at this time. 6. According to the second subassembly of the scope of patent application, where the reinforcing material is selected from the group consisting of glass and ceramic, the reinforcing material can change the thermal expansion coefficient of the coating. ^ 7. According to the subassembly of item 6 of the scope of the patent application, all or part of the reinforcing material is glass fiber, which is a continuous and finely divided strand type and extends along the entire length of the group. -22 This paper size applies to Chinese National Standard (CNS) Α4 size (210 × 297 mm)-mm-I n I----.----- i-=-. — ^ G & ^ m I (Please read the precautions on the back before filling out this page)-Order A8 B8 C8 D8 Patent Application Scope 8. According to the subassembly of Item 7 of the Patent Application Scope, at least one layer of parent material is listed in the fiber and Ping group In the meantime, the matrix provides the fibers for consolidation in the array. -9. According to the subassembly of the patent application No. 8 in the patent, the fiber is resin-saturated, and at least two parallel groups are arranged at the same time, and each group is in the form of continuous rubber wiring strands. 10. The sub-assembly according to item 8 of the scope of patent application, wherein the adhesive tape contains a _B grade resin. According to the sub-assembly of item 6 of the scope of the patent application, all or part of the fiber is a continuous strand, which is spirally arranged around the group of rows, and simultaneously extends out of the length of the group of rows. ! 2. The sub-assembly according to item 6 of the scope of patent application, wherein the fiber is uniformly mixed with the base material. According to the patent application Fanyuan No. 6, the sub-assembly, wherein the coating contains the parts of the all-seeded fiber, the area is arranged at intervals along the length of the group. 14. According to the sub-assembly of item 6 of the scope of patent application, some of the fibers are arranged in one or more linear groups and extend in the length direction of the group. The fibers are arranged in one or more groups and extend spirally in the length direction of the group. The spiral group system terminates at each end of the group with at least four overlapping turns, and each of the spiral groups is aligned. Above the linear assembly, a layer of appropriate parent material is arranged between the linear and spiral assemblies. 15. According to the subassembly of the scope of patent application No. 丨 4, in which the straight fiber group 23 sheets of paper ^^ apply Chinese National Standard (CNS) Α4 »A8 B8 C8 D8 6. The scope of the patent application and the spiral fiber group The arrangement is such that the non-fibrous portions are defined at intervals along the length of the group of rows. 16. According to the second assembly of the scope of patent application, the parent assembly is ceramic. 17. The subassembly according to item 2 of the scope of patent application, wherein the mother substance is glass. 18. The subassembly according to item 2 of the patent application scope, wherein the parent material is silicone. 19. The subassembly according to item 2 of the scope of patent application, which additionally includes ventilation equipment. 20. The subassembly according to item 19 of the scope of patent application, wherein the venting fixture includes a reduced strength region in the coating. 21. The subassembly according to item 1 of the scope of patent application, wherein the electrical component includes at least one pair of MOVs (metal oxide varistor) and a conductive sealing paste arranged between each adjacent pair of MOVs, the sealing paste having Above and below the stacking opening. '22. —Serial assembly for surge arrester, including: Printed by the Consumer Cooperative of the Central Standards Bureau of the Ministry of Economic Affairs (please read the precautions on the back before filling this page) Most electrical components, including at least A pair of MOVs, the element is stacked in a pumping direction and has an outer surface; and an insulating coating including: a first mother material layer including a thermosetting resin selected from a polyester resin and a phenolic resin And a group composed of epoxy resin, which can be compatible with each other, the thermosetting resin is fixed on the outer surface; a second mother material layer containing the thermosetting resin, which is selected from the same as the -24- The size of this paper is applicable to Chinese National Standard (CNS) A4 (210X297 mm). Printed by the Consumer Cooperatives of the Central Standards Bureau of the Ministry of Economic Affairs. A8 B8 C8 D8. 6. Scope of patent application _ The first parent material layer group, the second The mother material layer is fixed to the first mother material layer;-the first fiber layer contains at least four turns of separated magnetic tapes and extends in the length direction of the group, each tape contains a plurality of grade B polyester resin saturated The fibers are arranged flat Rows and rows, the tape is buried in the second parent material layer; a third parent material layer containing a thermosetting resin, which is selected from the same group as the first parent material layer; a second The fiber layer includes a plurality of fibers saturated with a class B polyester resin and is arranged in parallel groups in a second tape. The second tape is narrower than the first tape and is spirally arranged around the outer surface. It extends in the length direction of the set of rows and ends at each end of the set of rows with at least four overlapping turns. The second fiber layer and the third parent material layer are at least partially buried in the second parent material. Within the layer; < A fourth parent material layer having the same thermosetting resin as the second parent material layer;-the coating is applied to the outer surface of the group at a temperature higher than the normal operating temperature , Which has a thermal expansion coefficient greater than the thermal expansion coefficient of the electrical component, so axial and radial forces are applied to the group at normal operating temperatures, so that the components remain electrically coupled and are axial to each other To the right. 23. —An electrical assembly, including the secondary assembly in item 22 of the scope of the patent application, and a waterproof cover composed of the coating and integrally formed therewith, the cover including a heart arranged around the secondary assembly The body and most are recorded along the axial direction of the heart body that is drawn toward the partition. ____- 25-_: The Zhang scale is applicable to the Chinese national standard (€ \ 5) 厶 4 specification (210/297 mm) '· (Please read the precautions on the back before filling this page) Printed by the Consumer Cooperatives of the Central Standards Bureau of the Ministry of Economic Affairs. 24. A method for manufacturing electrical subassemblies for use in power surge arresters. The steps involved are as follows: Preheat most electrical components to 150 ° C. (: And 275 ° C exhaust temperature; brush preheated components, including at least a pair of MOVs and a conductive sealant, arranged between each pair of MOVs', the components are placed in a fixture and arranged axially , 俾 constitutes a group with an outer surface and an end plug on each end; the axial force i is applied to the end of the group so that it is sufficient to provide good electrical contact between the components; while maintaining this axis When the force is applied, the first parent material layer is applied to the outer surface of the group, which includes at least two types of mutual capacitance electromotive materials with high voltage stability, and each of the materials is selected from the group consisting of thermosetting resin, ceramic, glass, and dream glue. In the group; the second parent material layer is superimposed on the first parent material layer, the first parent material layer is easier to mature than the second parent material layer, so that the first parent material layer is fixed on the outer surface of the group At the same time, it is mixed and / or fixed to the second mother material layer. The second mother material layer has a softer outer side and can be at least partially embedded in one or more layers of adhesive tape. Covering the second parent material layer, the first-tape layer contains a plurality of radially separated Class B resins Foam tape, the tape contains a plurality of straight-aligned fibers, and the fibers are selected from the group consisting of glass fiber, nylon ^ rayon and ceramics, each tape extends in the length direction of the group, and between adjacent tapes The space is sufficient to allow the ventilation of the group listed in the process of ionization when used in the surge arrester; Grade 6 resin can be ______- 26- The standard of this paper is applicable to China National Standard (CNS) A4 (210X297 mm) ) C Please read the notes on the back before filling out this page)-'. ---- h _; I ----------. Ϋ I m.! N HI Mu 一 .. -n ϋ n ϋ n Printed on paper by the Consumer Cooperative of the Central Bureau of Standards of the Ministry of Economic Affairs. Standards of China (CNS) A4 size (210x297 meals). The scope of patent application is selected from the group consisting of polyester resin and grease with high pressure stability. Towel; M material and limic acid are applied to coat the three parent material layers, the second parent material layer and the first adhesive tape layer of at least two types of mutual-capacitance electromotive materials with high voltage stability, which are made of thermal resin, glass, glass Zhao Zhong, a group composed of Mengjiao and Mengjiao, = the three parent material layers form soft Table, which can be at least partially buried in a multi-layer adhesive tape; Θ or. A second adhesive tape layer is coated on the third parent material layer, which contains a second fat-impregnated adhesive tape and has a plurality of straight-aligned fibers. In the group consisting of two glass fibers, nylon, rayon, and ceramics, the B-grade resin is selected from the group consisting of a polymer with high voltage stability, polyester, epoxy resin, and phenolic resin. The arrangement around the group is: a spiral arrangement and extending in the length direction of the group, and the second adhesive tape ends at each end of the group with at least four overlapping turns; a fourth mother layer is coated on the third mother The material layer and the second adhesive tape layer contain at least two mutual-capacitance electrical materials with high pressure stability, and each material is selected from the group consisting of thermosetting resin, ceramic, glass and silicone. When used in In the electric discharge arrester, the mother layer and the B-grade resin are matured at a temperature exceeding the maximum expected failure mode temperature of the electrical component for a sufficient period of time; the sub-assembly is cooled and removed from the end of the sub-assembly Axial force. -27- (Please read the notes on the back before filling this page)