TWI223486B - Tri-mode over-voltage protection and disconnect circuit apparatus and method - Google Patents

Abstract

A single-phase apparatus and method for protecting for all AC power wires/lines and combinations thereof. The present invention prevents (1) the hazardous condition occurring at the wall receptacle, arising from accidental reversal of the line wire with the neutral wire, from adversely affecting at least one peripheral device in the line, and (2) the overheating and destruction of components in an over-voltage protection circuit by providing an efficient circuit configuration which assures a rapid simultaneous disconnect of both the hot line and neutral power lines. The present invention achieves this by opening the circuit to simultaneously disconnect both line and neutral power lines feeding a load when the over-voltage event occurs in any of three wire pairings: line-to-neutral, line-to-ground, or neutral-to-ground.

Description

1223486 玖 发明, description of the invention (the description of the invention should state ... the technical field to which the invention belongs, the prior art, content, embodiments, and a simple description of the drawings) Technical Field This application is a US patent application (serial number 09 / 713,360; The archive date is November 14, 2000), and its name is the device and method for three-mode overvoltage protection and circuit cut-off. The invention relates to an overvoltage protection circuit. More specifically, the present invention relates to an overvoltage protection circuit having a metal oxide varistor (MOV) element as an overvoltage sensing element. To be more specific, the present invention relates to an over-voltage protection circuit having a MOV element as an over-voltage sensing element for alternating current (AC) power distribution. Prior art The state of the art of advanced electronic components, such as commercial and personal computers and related equipment, can accommodate the need for transient voltage surge suppression to protect their highly sensitive circuits from overvoltage damage. This is the most commonly used method, but it cannot handle severe overvoltage problems that may occur in the absence of neutral, ground, or repeated current pulses (such as from lightning strikes). A typical voltage surge protection element includes a plurality of faulty fuses, where the input and output are disconnected at these fuses, resulting in overcurrent resulting in overcurrent. Related advanced surge suppression devices may also include various MOV and fuse combinations. These MOVs are typical non-linear components. They are made of synthetic ceramic materials (such as zinc oxide particles and amorphous materials) over a wide current range. MOVs keep the voltage in a narrower band (ie, varistor voltage). Under the over-voltage condition, Μ Ο V ruptured or exploded due to generating too much heat, which caused the relevant electronic equipment to be subject to 1223486.

(2) Damage. Related surge suppression device patents include:

(1) U.S. Patent Nos. 6,055,147 to Jeffries et al., Regarding multiple MOVs in series with multiple thermal fuses; (2) U.S. Patent Nos. 5,412,526 to Kapp, et al., Applying for multiple MOVs and multiple financial fuses ; And a plurality of MOVs connected to a plurality of resistors, (3) (4) U.S. Patent Nos. 6,040,971 to Martenson et al., Regarding a plurality of 0 Vs in parallel, and a MV in parallel with a heat-resistant fuse; and The pair of thermal wires are connected in series with a circuit element with overvoltage trip protection; U.S. Patent Nos. 5,388,021 to Stahl, regarding a plurality of MOVs in parallel with a plurality of electrical sensors and a plurality of inductors; and a plurality of Μ0 V each other (5) U.S.A._Silicon silicon connection (6) U.S. electricity (7) U.S. phase (S) U.S. patent number 5,675,468 to Chang, regarding the two input terminals and the two fuses are connected in series; the fuse and the output terminal are three Two-way bidirectional controllable off element is connected in series with MOV; Three-terminal bidirectionally controllable Shixi switch element ground static voltage limiter; Patent No. 4,901,183 to Lee, regarding two MOVs in parallel with each other; thermal fuses in parallel with each other; The capacitor is connected in parallel with one MV; the containers are connected in parallel; the two inductors are connected in parallel with each other; Patent No. 6, 〇38,117 to 〇111111 丨 et al. Connected in series with a relay; Patent Nos. 5,534,769 to Ishii, regarding resistors and capacitors at β and -7-1223486

〇) (9) U.S. Patent No. 5 80M50 to MOV: Phase. About there are more than four groups in parallel… pieces of the female four groups with a heat-resistant fuse and-induction outside and only for the ground indicator light bulb. 2. The related advanced components did not mention that the hot line and the neutral line were not intended to be reversed and plugged into the wall; ^ Γ Electrical conditions, the device may not be able to remove peripheral components from the second; dangerous related patented products remain p M h Road_open. In addition, hold a large number of components to achieve the goal. Therefore, it is necessary to quickly protect the middle line of the surge suppression _ grinding / ^ ^ to ensure that the hot line is disconnected from the middle, spring, and the protection configuration (ie, the minimum component equipment size) and an ancient, cost-effective way to protect The following situations occur: The dangerous situation of the wall socket caused by accidental connection, which is as follows :;-the peripheral components in the circuit cause adverse effects; ⑺ overheating and damage of the MOV during overcurrent. The objective of the present invention is to provide a device and method to prevent-by providing an effective protection configuration (that is, the minimum number of components to reduce, and the size of the device) that can ensure the rapid and synchronous disconnection of the hot-melt centerline. The following situations occur due to the accidental connection of the hot wire (L) and the neutral wire (N). This situation affects at least one element on the line. ^ Overheating and damage of the MOV in the overvoltage protection circuit . Another object of the present invention is to simultaneously disconnect the cut line and the neutral line through a Skater circuit and provide a load when an overvoltage occurs in any of the three groups of lines, thereby providing a device and method to prevent the following The occurrence of the situation; because of the accidental connection of the hot line and the neutral line ... the danger of the wall socket 1223486 (4) less adverse effects on the peripheral components in the spring road; (2) overheating of the MOV in the over-voltage protection circuit And damaged. These three sets of lines are hotline and neutral (L_N), hotline and ground (L-G), or neutral and ground (N_G). Therefore, the present invention also provides a single-phase overvoltage protection circuit device for all AC power lines and combination lines. It is particularly pointed out that the present invention provides a device and method by providing an effective configuration that can ensure that the hotline and the neutral line are disconnected quickly and synchronously. (1) The hotline and the neutral line are connected in reverse; The dangerous situation of the power socket, which will cause at least one peripheral component to have an adverse effect; (2) Overheating and damage of Mov in the overvoltage protection circuit. This configuration can ensure that the hot line and the neutral line are disconnected at the same time. The invention achieves this "accounting for 0 squares" to open the circuit so that when the overvoltage occurs in the three groups of lines, the hot line and the center line can be disconnected: either or both. These three groups of lines are the hot line Bingzhong and Quan (L Ν), hot line and ground (L_G) or neutral line and ground. In a single-phase power system, the hot line, neutral and ground (G) are all lines that are susceptible to destructive high voltage. The method of inventing the protection of these lines is: 4 each pair of lines (ie hot line and neutral line, hot line and ground line, neutral line and ground line) is provided with a parallel MOV protection element #. The device also includes an integrated fuse '彡These fuses disconnect the hot and neutral wires from the load. The M0V element is activated by overvoltage conditions and absorbs additional surges and overvoltages that may damage the power supply. When the capacity of Mov is overrun, it will produce excess surface temperature Passed to the heat-resistant fuse and generate current through the heat-resistant fuse, and then open the fuse to protect the load. Therefore, if the voltage from the hot line to the neutral line or from the hot line to the ground line is high enough (that is, VL_N:> 120 V to 130 V) And cause the M0V protection element to overheat, then heat (5) (5) 1223486

The line and center line will be disconnected from the user's connection. In order to facilitate the disconnection, the special heat-resistant fuse of the application unit can be used to open the circuit, that is, a non-resettable disconnection mode. Burned out fuse &, 4 顼 Replace to restore circuit operation. The current through the line can be expressed as 1L during normal operation, the current through M0V, the current of the MOV Im0v must be guaranteed, the current is less than the established current (IM0V rated) 〇 overvoltage 'current through the MOV exceeds, < Enveloping heart (ie IM〇v> i MOV -rated) Di Er, the surface is the same and affect the current through the heat-resistant fuse exceeds its predetermined value (IL = ITF ITF > τ, 'TF-rated), so heat resistance The fuse will open to prevent the voltage from being supplied to the load (see Figure ο. In all of the above protection modes (ie L_N, L_G, N_G), it is possible to report that the protection element (ie V) has absorbed excess energy, so Disconnect thermal fuses or circuit breakers-they can effectively disconnect the line to any of the protection components and loads. The warning will continue to inform the user even if the equipment is no longer powered. This warning will also inform the user of other potentially damaging conditions. After such a warning, the power plug of the device should be unplugged from the wall socket, and the thermal fuse or the circuit breaker should be reset. This warning feature is audible or visible. Other features of the present invention include It has appeared in, the embodiment ". Embodiment 1 shows a preferred embodiment of the single-phase three-mode overvoltage circuit protection device 10 of the present invention. For example, the device 10 includes a circuit including a power input section 14; Three power input connectors connected to hot line u, neutral line 12 and ground line 13, these lines are internally connected to the overvoltage protection device. For example, the power input section 4 receives AC power from a single-phase power source and includes a safety-10- 1223486

(6) line (not shown), this single-phase power supply includes 120VAC line voltage measured from hotline to neutral. In the present invention, under normal operation, the lines ^, 12, 13 connect AC power to at least one peripheral component (not shown) through the power output section 15. For example, the power output section 15 may be composed of three or more power output connectors (not shown in the figure). These connectors distribute the AC power to the peripheral components through the hot line 11, the center line 12, and the ground line 13 (not shown in the figure). The power output connector is connected to at least one peripheral component. In a preferred embodiment, four protection elements such as MOV 20 absorb all power waves > and overvoltage. Every four Mov 20 is located between the three sets of lines, that is, one MOV 20 is located between the hot line ^ and the center line, one mov 20 is located between the hot line 11 and the ground line 13 (LG); and one MOV 20 is located at the center line 12 and ground 13 (N · σ). The device 10 further includes five heat-resistant fuses (TF2, TF3, TF4, TF5, TF6) and a slow-blow fuse 3 (Fi). Fuse daggers, Tf2, and Th are connected in series with the hotline 11 'while TF3 and tf4 are connected in series with the centerline 12; and TF5 is effectively connected in series with MOVi and MOV4. MoVjp m0v4 is distributed between the ground line 13, hot line U and neutral line 12 as an overvoltage protection element. Alternatively, a well-designed protective component such as a circuit breaker or similar, slow-acting fuse, 糸, 糸, fast-acting fuse or thermal fuse can be used. For convenience, any compliant component is referred to herein as a fuse, but it must be understood that it includes all types of fuses, circuit breakers, or similar components. Looking again at Figure 1, under normal operating conditions, the four MOV 20 elements are high-impedance components that facilitate the distribution of line voltage to any connected peripheral device. These Μ0 V can properly absorb part of the transient overvoltage, thus protecting the connected peripheral components. The current passing through the hot line i i can be expressed as u. After -11-

⑺ The current of MOV 20 is shown in Table 1. Nongbu 曷 ΑΜ〇νΐ, IM〇V2, IM0V3, and must keep less than the current under normal operation. In severe overvoltage, reduce the impedance to respond to the MOV 20 that is particularly affected by it, so that the current through the element 20 is greater than the predetermined current (that is, I-W). This can effectively generate current through the heat-resistant fuse 30 that is larger than its predetermined current. To / JT y L TF 'TF > TTF-rated). This over-voltage condition will cause the heat-resistant fuse 30 affected by the fuse to open (burned. The fuse 30 is prevented from opening; one of the four MV 20s affected by it will be overheated. 4 The safety start The ground output G at the connector is disconnected. When the neutral-to-ground overvoltage occurs, M0V4 will cause the fuse% to be disconnected. The device 10 may also include Xinzhuquao ρ 欲 特 欲 40 (That is, the over-voltage indicator) indicates that at least one of the four MOV 20 responds ^ i > 仵, the condition has been changed to the opening of a heat-resistant fuse 30. The warning characteristics include at least one selected from the two warning characteristics. A warning feature, this group of warning features mainly includes = indicator light, -LED indicator and / or-audible warning $ Μ❹4 like a warning device 'indicates that AC power is disconnected from peripheral equipment due to overvoltage (〇 · ν) / warning element may be Includes a normally-on green light—indicating normal operation and / or red holding ~ A light indicates a malfunctioning operation. As previously mentioned, for example, warning feature 40 disconnects from AC power through lines Ha to 12a. When the overvoltage causes the edge η or When the neutral line U is disconnected, the related indicator lights up And / or the audible alarm sounds, indicating that the element 10 has disconnected the power from the load. The second device can disconnect the power after the warning feature 40 issues a warning, and then replace or reset. The device W can optionally include deletion FF switch (not shown in the figure). For power distribution or for further safety considerations, the device 10 may include input Η or wheel -12-1248686 ⑻ 15-terminal electronic filter to eliminate static electricity or noise and the like Device Fanhe! 1 1 The three-mode overvoltage protection and cut-off circuit can include the first / overvoltage protection circuit (ie M0vjoTFS) between the decoration and the ground; distributed between the hotline and the neutral The second and third overvoltage protection circuits and the fourth overvoltage protection circuit between 2 neutral and ground. Device Example 1 As described in Example 1, the device can also include at least one warning feature indicating overvoltage The situation has arisen, and the warning feature selected from the warning feature group mainly includes an indicator light and an indicator. Device Example 1 In the device described in Example i, each overvoltage protection circuit may include a fuse and a μ Ο V. The fuse (TF5) that is connected to the first, Ma Beimo protection circuit between the hot line 11 and the ground line 1 3 is parallel to the hot line i 丨 and the ground line 13: The second line between the hot line U and the neutral line 12 The voltage protection circuit is connected = the fuse "TF3) is connected in series with the neutral line 12; the third overvoltage protection circuit is connected: the fuse ⑽6) is connected in series with the hot line; and the fourth overvoltage protection fuse (also F Λ + ^ (疋 TFS) is connected with the neutral line 12 and the ground line and three overvoltage protection circuits, and the first and the second line 12 are connected in parallel; and the connected MOV (MOV2 and 3) and the hotline η and and Hot wire u and ground 13, MOV (M0Vl) / parallel connected to the overvoltage circuit; MOV (MOV4) connected to the fourth overvoltage protection circuit and green, θ 庑 + 庑 lugu 2 and ground 3 in parallel. This distribution method is convenient for responding to the over-voltage situation between the neutral and ground lines. 1 on the hotline relative to -13- 1223486

(9) MOV2 and MOV3 will be activated by the continuous overvoltage in the neutral line 12, so the disconnection of TF3 and TF6 will increase the output of the hot line 11 and the neutral line 12. Slow-blow fuses 31 (F!) And heat-resistant fuses 30 (D? 2 and TF4) provide additional protection for hotline 11 and centerline 12. Device Example 4 In the device described in Examples 1 to 3, an electronic interference filter as described above can be inserted at the input 14 or output 15 to remove noise and electrostatic interference. Preferred embodiments of the method The preferred method of the present invention includes protecting a plurality of peripheral components by providing a three-mode overvoltage circuit protection device 10 in accordance with the present invention. For example, the method includes providing a circuit; allocating power under normal operating conditions; disconnecting power from peripheral equipment in response to an overvoltage condition occurring in any of the three sets of lines of the single-phase power system, which are the hot line and the neutral line , Hot line and ground line and neutral line and ground line; indicates power loss caused by overvoltage; and replace or reset the fuse of device 10 as needed to restore the power supply of peripheral equipment. The device 10 may include an ON / OFF switch required to provide power distribution, or, for safety reasons, an electronic interference filter / method at the output or input of the component. Example 1 The present invention relates to a method for protecting at least one peripheral component during overvoltage Examples include ... providing a three-mode overvoltage protection and cut-off circuit device, the device includes a first and a second overvoltage protection circuit distributed between the hot line and the neutral line; a third Over-voltage protection circuit; and -14- 1223486

(ίο)

A fourth overvoltage protection circuit distributed between the neutral and the ground. This device supplies AC power to at least one peripheral component, so the hot and neutral wires are not distributed as an output under overvoltage conditions. In the over-voltage, at least one of the first, second, third, and fourth over-voltage protection circuits will allow enough current to pass through to open the heat-resistant fuse, thus causing the disconnection to prevent dangerous situations of the power supply, that is, due to the hot line and the middle Dangerous situation caused by accidental connection of wires. Protect the protective circuit from overheating and damage by disconnecting the hot and neutral wires. In response to an overvoltage condition, at least one of the provided overvoltage protection circuits is activated. Method Example 2 As described in Example 1, the device may further include at least one warning feature to indicate that an overvoltage condition has occurred. The warning feature selected from a group of warning features mainly includes an indicator light and an LED indicator. Method Example 3

The method described in Example 1 or 2 may further include at least one electronic interference filter at the input or output of the component for removing static electricity or noise in the circuit as described above. The materials detailed here can fully meet the above-mentioned invention requirements and better specific embodiments of the invention, and thus are representative of the highly desired subject matter of the present invention. The scope of the present invention completely includes other specific manifestations, which may be obvious to those skilled in the art, and will be controlled accordingly, by way of additional scope only. So for a single element, it doesn't mean "one and only one" but "one or none" without a clear description. All corresponding to the above-mentioned preferred embodiments and additional -15-1223486

(ii) The structural and functional equivalents of the specific embodiments are clearly presented here by comparison and are included in the scope of the invention. These specific examples are known to those having ordinary experience in the industry. Furthermore, there is no need for an element or method to explain every problem found by the present invention, as it is included in the scope of the present invention. Furthermore, no element, component, or method step of this publication is intended to be used by the public regardless of whether the element, component, or method step is expressly stated in the scope of the invention. However, those skilled in the art should be aware that various changes and improvements in the details of semiconductor materials and processing materials can be made without departing from the scope and spirit of the invention as detailed in the additional scope. This range is not the same as 35 U.S.C. 112, Section VI, unless the component clearly indicates the use of the word "means". Brief description of the drawings For a more comprehensive understanding of the present invention, please refer to the following drawings. FIG. 1 is a schematic diagram of a three-mode overvoltage protection and cut-off circuit device related to the present invention. Explanation of Symbols of the Drawings 10 Device 11 Hot Line 11, 12, 13 Circuit Line 11a-12a Circuit 12 Center Line 13 Ground Line 14 Power Input Section 15 Power Output Section -16- 1223486 (12) 20 Four MOV 30 Heat-Resistant Fuse 31 Slow Melt Fuse 40 warning feature

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Claims (1)

1223486 Fengu No. 092100503_Please file a replacement for the Chinese patent application scope (May 1993) ~ Goods Day I. Patent application scope 1. A three-mode overvoltage circuit protection and cut-off device, the device includes: a. A first overvoltage protection circuit configured between a hot line and a ground line; b. Configuration A second and a third overvoltage protection circuit between the hot line and a neutral line; and c. A fourth overvoltage protection circuit disposed between the neutral line and the ground line; therefore, when the voltage is exceeded When the protection circuit is operating, the hot line and the neutral line are assigned as an output voltage; and therefore, when an overvoltage condition occurs, at least one of the first, second, third, and fourth overvoltage protection circuits will respond. To allow sufficient current to pass, causing a protective element to open. 2. The device according to item 1 of the patent application scope, wherein the protection element is selected from the group consisting of a fast-acting fuse, a slow-acting fuse, a thermal fuse and a circuit breaker. 3. The device according to item 2 of the patent application, further comprising: at least one warning feature to indicate that an overvoltage has occurred, the at least one warning feature is selected from a group of warning features, and the group of warning features includes an indicator light , An LED indicator and an audible warning device. 4. If the device of the scope of patent application is applied for, each of the over-voltage protection circuits includes: a. A separate protection element; and 1223486 f positive replacement page (leather 3. strategy 8 application for Fengli range continuation page b. — Individual metal oxidation varistor (MOV); wherein the individual protection element related to the first overvoltage protection circuit is configured in parallel with the ground and hot lines, and wherein the individual protection element related to the second overvoltage protection circuit The configuration is associated with the neutral line, wherein the individual protection element related to the third overvoltage protection circuit is configured with the hot line, wherein the protection element related to the fourth overvoltage protection circuit is configured with the The iso-earth line and the neutral line are connected in parallel, wherein the individual MOV system configuration related to the first over-voltage protection circuit is connected in parallel with the hot line and the ground line, and the individual MOV system configuration related to the second over-voltage protection circuit is connected to The hot line is connected in parallel with the neutral line, wherein the individual MOV system related to the third overvoltage protection circuit is configured in parallel with the hot line and the neutral line, and is connected with the fourth over voltage protection line. The circuit-related configuration of the individual MOV is connected in parallel with the neutral line and the ground line, and thus the configuration of the individual MOV connected to the fourth overvoltage protection circuit is convenient to respond to the one appearing between the neutral line and the ground line. Overvoltage condition> Brother. 5. If the three-mode overvoltage protection and cut-off circuit device of item 1 of the scope of patent application, further includes at least an electronic interference filter. 6. The device of scope 4 of the patent application , Where the protection element is selected from the group consisting of fast-acting fuses, slow-blow fuses, heat-resistant fuses and circuit breakers 1223486 patent application page: 5. ^ 28. 7-Three-mode overvoltage protection and cut-off A circuit device comprising: a. A first overvoltage protection circuit disposed between a hot line and a ground line; b. A second and a third transition line disposed between the hot line and a neutral line A voltage protection circuit; c. A fourth overvoltage protection circuit disposed between the neutral line and the ground line; and d. At least one warning member for indicating that an overvoltage condition has occurred, the at least one alarm The component is selected from a group of warning components, which includes an indicator light, an LED indicator, and an audible warning device. 8. The device according to item 7 of the patent application, wherein each over-voltage protection circuit includes: a. — An individual protection element; and b. — An individual MV, wherein the individual protection element related to the first overvoltage protection circuit is configured in parallel with the ground and the hotline, and is related to the second overvoltage protection circuit The individual protection element configuration is associated with the neutral line, wherein the individual protection element configuration related to the third overvoltage protection circuit is associated with the hotline, and the individual related to the fourth overvoltage protection circuit is associated with the individual The protective element is configured in parallel with the ground and the neutral, 1223486 year · '· · ·: Ν ·: Λ ·: ψ :: χ ·:-·:;-^: ·.; ·?:.: ·' '·· :: >-> · .: Application: Please: Patent, Scope Continued: page, where the individual MOV system related to the first overvoltage protection circuit is configured in parallel with the hotline and the ground line, where the related to the second overvoltage protection circuit is An individual MOV system configuration is connected in parallel with the hot line and the neutral line, wherein the individual MOV system configuration is connected in parallel with the hot line and the neutral line, and the related MOV system is connected with the fourth over voltage protection circuit. The individual MOVs are configured in parallel with the neutral and the ground, and thus the distributed configuration of the individual MOVs associated with the fourth overvoltage protection circuit facilitates responding to an overvoltage condition that occurs between the neutral and the ground. 9. The device of claim 7 in which the protection element is selected from the group consisting of a fast-acting fuse, a slow-acting fuse, a thermal fuse and a circuit breaker. 10. The three-mode overvoltage protection and cut-off circuit device according to item 7 of the scope of the patent application, further comprising at least one electronic interference filter. 11. A three-mode overvoltage protection and cut-off circuit device, the device comprising: a. A first overvoltage protection member disposed between a hot line and a ground line, b. Disposed between the hot line and a neutral line A second and third overvoltage protection member therebetween; and c. A fourth overvoltage protection member disposed between the neutral line and the ground line; therefore, when an overvoltage condition occurs on the hot line, such The second and 1223486 patent application patent performance page \ The three over-voltage protection member responds by disconnecting the heat-resistant protection element, and at the same time causes an open circuit state, so that the hot line and the neutral line are not assigned as an output voltage. 12. As for the device under the scope of patent application item 11, each of the over-voltage protection members includes: a. A separate protection element; and b. — Individual metal oxidation varistor (MOV), which are related to the first and second The individual protection element related to the overvoltage protection circuit is configured in series with the hot line, wherein the individual protection element related to the third overvoltage protection circuit is configured in parallel with the hotline and the neutral line, and is connected to the first overvoltage The individual MOV system configuration related to the protection circuit is connected in parallel with the hot line and the ground line, wherein the individual MOV system configuration related to the second overvoltage protection circuit is connected in parallel with the hot line and the neutral line, and thus is connected with the fourth overvoltage protection circuit. The configuration of the individual MOVs related to the voltage protection circuit facilitates responding to an over-voltage condition that occurs between the neutral and the ground. 13. The device according to item 11 of the patent application scope, further comprising: at least one warning feature to indicate that an overvoltage condition has occurred, the at least one warning feature is selected from a group of warning features, and the group of warning features includes a Indicator light, an LED indicator and an audible warning device. 14. The device according to item 11 of the scope of patent application, wherein the protection element is selected from 1223486 9a 5 · 2δ. Page 1 of the scope of patent application * ⅩΊ, νκ ·· λ '^ ^ V \, > * < X & gt Component group consisting of fast-acting fuses, slow-acting fuses, thermal fuses and circuit breakers. 15. For example, the three-mode overvoltage protection and cut-off circuit device of the scope of application for patent, it further includes at least one electronic interference filter. 16. —A method of protecting at least one peripheral component in an overvoltage condition, the method comprising: providing a three-mode overvoltage protection and cut-off circuit device, the device comprising: a. Configured on a hot line and a ground line A first overvoltage protection circuit between; b. A second and a third overvoltage protection circuit arranged between the hot line and a neutral line; and c. Between the neutral line and the ground line A fourth overvoltage protection circuit; a device for supplying alternating current to at least one peripheral element, so when the second and third overvoltage protection elements disconnect a protection element, the hot line and the neutral line are not assigned as an output Voltage. 17. The method as claimed in item 16 of the patent, further comprising: providing at least one warning feature to indicate that an overvoltage condition has occurred, the at least one warning feature is selected from a group of warning features, the group of warning features including a Indicator lights, an LED indicator, and an audible warning device; and a warning feature provided by activation to warn when an overvoltage condition occurs. 18. The method of claim 16 in the scope of patent application, further comprising providing an electronic interference filter and wave filter at the input end of the device for reading the page of the patent application. 19. The method according to item 16 of the patent application scope, further comprising providing an electronic interference filter at the output end of the device.