CN201188535Y - Super lightning protection mobile socket - Google Patents

Abstract

The utility model relates to a super thunder-prevention protecting movable plug socket which comprises a shell, a circuit board, an onvercurrent sensor, a zero-sequence mutual inductor, a testing button, a reset button, a control circuit, an electromagnetic release, and two static contacts and two movable static contacts of an N pole and an L pole. The electromagnetic release consists of a framework, a main tripping coil, an short circuit tripping coil, an iron core and a spring; one end of each of the two movable contacts is arranged on a circuit board, an insulating pothook is arranged on the circuit board, and the other end of each of the two movable contacts is provided with a movable contact point; an offsetting spring is sleeved on the reset button, and the bottom of the reset button is provided with a reset pothook which is oppositely collocated with the insulating pothook; the reset pothook is connected with the iron core; one end of each of the two static contacts is provided with a static contact point, and the other end is arranged on the circuit; the N pole passes through the zero-sequence mutual inductor to bend outwards and strides over the overcurrent sensor, the L pole passes through the zero-sequence mutual inductor and the overcurrent sensor simultaneously, and the winding of the zero-sequence mutual inductor is connected into the control circuit. The utility model cuts off the power supply with high speed, and performs grounding protection immediately, and has high sensitivity and good reliability.

Description

Super thunder-prevention protection mobile jack

Technical field

The utility model relates to a kind of mobile jack, refers in particular to a kind of thunder-prevention protection mobile jack.

Technical background

Along with science and technology development, the power supply mobile jack with lightning protection function is more and more.Thunder-prevention protection mobile jack will provide the reliability guarantee for protection people's the security of the lives and property.Existing thunder-prevention protection mobile jack is three piezo-resistances in parallel between center line, live wire, three leads of ground wire; As thunderstorm hour, the resistance that voltage is higher than piezo-resistance reduces rapidly, and moment will be higher than the lightning voltage of piezo-resistance voltage releases, and supply voltage continues to the electrical appliance powered operation.But piezo-resistance has individual shortcoming, promptly whenever being descended tens volts by the withstand voltage of a piezo-resistance of thunder and lightning strike, a rated voltage is the piezo-resistance of 470V/3000A, if hit three times continuously, his withstand voltage will will be burnt out by crest voltage near the peak value of supply voltage; Be connected on the electric wire of piezo-resistance if there is the thunder and lightning of lasting 1S to beat, will be the piezo-resistance decrepitate, and then burn electric equipment.Thereby quick deenergization or directly with zero line ground connection, be only the preferred plan of safeguarding electric equipment, and break-time wants fast.

The utility model content

The utility model purpose is to overcome the above-mentioned defective that prior art exists, and a kind of super thunder-prevention protection mobile jack is provided, and its deenergization speed is fast, and ground protection immediately, and is highly sensitive, good reliability.

For achieving the above object; the technical scheme that the utility model is taked is: a kind of super thunder-prevention protection mobile jack; it comprises housing and circuit board and is arranged on over-current sensor on the circuit board; zero-sequence transformer; test button; reset button; control circuit; magnetictrip; two static contacts of the N utmost point and the L utmost point and movable contact spring; magnetictrip is by skeleton; main tripping coil and short circuit tripping coil; iron core and spring constitute; two movable contact spring one ends are arranged on the circuit board; an insulation hook is set on it; the other end is respectively equipped with a moving contact; suit back-moving spring on the reset button; the bottom is provided with the hook that resets with the relative configuration of hook of insulating; the hook that resets is connected with iron core; one end of two static contacts is respectively equipped with a fixed contact; the other end is arranged on the circuit board; the N utmost point passes the outside bending of zero-sequence transformer and strides across the overcurrent electric transducer; the L utmost point passes zero-sequence transformer and over-current sensor simultaneously, in the winding access control circuit of zero-sequence transformer.

This super thunder-prevention protection mobile jack; its mechanical part makes it to thread off with the hook that insulate and realizes deenergization by the iron core direct pull hook that resets, thus have simple in structure, tripping force big, quick action, highly sensitive, working stability reliable, long service life, low cost and other advantages.What is more important, it has adopted over-current sensor and zero-sequence transformer simultaneously, thereby has overload protection and creepage protection function concurrently.Zero-sequence transformer is used to detect leakage current, and phase line of power (the L utmost point) and center line (the N utmost point) all pass zero-sequence transformer, and in the winding access control circuit of zero-sequence transformer.Electrical equipment is when operate as normal, because the current value of phase line and center line is identical, magnetic direction is opposite, cancels out each other in magnetic field, and the induced voltage in the winding of zero-sequence transformer is zero, and control circuit is failure to actuate.When leakage current appears in circuit, the current value of phase line of power and center line is unequal, will in the winding of zero-sequence transformer, induce faint electric leakage signal voltage like this, this induced signal voltage is the controllable silicon conducting in the high level trigger control circuit through control circuit amplification, comparison, upset, the iron core of solenoid (main tripping coil) produces magnetic attraction moves iron core inwards, pulling tripping mechanism (hook and insulation hook reset), deenergization.

The used over-current sensor of this super thunder-prevention protection mobile jack is also different with traditional current transformer, and traditional current transformer is that former limit winding is inserted power supply, induces measuring current at the secondary winding.This over-current sensor is not established former limit winding, and phase line of power (the L utmost point) is directly passed over-current sensor.When the electric current that passes through when phase line surpassed rated operational current, over-current sensor will induce faint signal voltage.When this induced signal voltage reached setting value, control circuit triggered controllable silicon deenergization wherein.This over-current sensor design volume only has 6mm * φ 15mm; so protection socket volume can design very for a short time; and because over-current sensor just can play supervisory function bit when no-voltage is above; thereby reaction is sensitiveer; especially be applied to the small household appliance of rated current below 1A, its advantage is more remarkable.

Therefore, it has functions such as lightning protection, short-circuit protection, earth leakage protective, overcurrent protection, overvoltage protection, and deenergization speed is fast, and is highly sensitive, good reliability.

Control circuit comprises the control chip of the signal of telecommunication that is used to receive zero-sequence transformer and the induction of over-current sensor winding, by the control chip upset is that high level triggers the controllable silicon conducting, main tripping coil and iron core produce magnetic field suction, make iron core in the time of main tripping coil central motion, make tripping mechanism (hook and insulation hook reset) action, deenergization.

Control chip can be any standard structure, because of this super lightning protection flameproof protection mobile jack volume less, preferred single-row model VG54123.The lever arm of two termination potentiometers of the winding of zero-sequence transformer, the other end that an end, the 3rd current limliting that the end that end that 1 pin, the negative electrode of voltage-stabiliser tube, the 3rd current limliting that one end is connected to control chip is a sensitivity end of regulating resistance, second filtering is anti-interference capacitor and ground connection are partiting dc capacitor, the other end are connected to the anode of voltage-stabiliser tube, anti-surge switch is the sensitivity other end of regulating resistance, second filtering is anti-interference capacitor and an end of build-out resistor; 2 pin of another termination control chip of build-out resistor; Ground connection is 3 pin of another termination control chip of partiting dc capacitor; One end of over-current sensor winding one termination potentiometer, an end of another termination power adjustments resistance, the other end of power adjustments resistance and the other end of potentiometer are taken over control the other end of surge switch; Anti-surge switch is a normally closed switch coaxial with reset button; anti-surge switch (normally closed switch) disconnects earlier before hand is pressed reset button; contact rear defence surge normally closed switch with fixed contact closed again when moving contact, prevents and influence that produced simultaneously moment surge voltage of having avoided resetting resets to protection switch.

One termination power phase line of main tripping coil, 1 pin of another termination full-wave rectifying circuit, 3 pin of full-wave rectifying circuit connect center line.The silicon controlled anode connects full-wave rectifying circuit 2 pin (being the full-wave rectifying circuit positive pole), the silicon controlled negative electrode connects 4 pin (being the full-wave rectifying circuit negative pole) of full-wave rectifying circuit, an end of anti-interference capacitor, an end of first filter capacitor, an end of first matching capacitance and the output 4 of full-wave rectifying circuit, and the silicon controlled control utmost point connects 7 pin of control chip, the other end of anti-interference capacitor and an end of second matching capacitance; Another output 2 of full-wave rectifying circuit connects first current-limiting resistance, the anode of the other end sending and receiving optical diode (power supply indicator) of first current-limiting resistance, the negative electrode of light-emitting diode (power supply indicator) connect the other end of first filter capacitor and 8 pin of control chip; 6 pin of another termination control chip of second matching capacitance; 4 pin of another termination control chip of first matching capacitance and 5 pin; The input 1,3 of full-wave rectifying circuit is connected respectively to phase line of power and center line.

The short circuit tripping coil is connected on the phase line of major loop, and an end of main tripping coil links to each other with an end of short circuit tripping coil.When electrical equipment produced short circuit, by the instantaneous large-current of short circuit tripping coil, the high-intensity magnetic field of generation made the iron core action, drove the hook that resets and threaded off with the insulation hook, thereby produce the tripping operation action.

Analog leakance test circuit that constitutes by the switch series connection of simulation leak resistance and test button of cross-over connection on the phase line of on the zero-sequence transformer center line in front and zero-sequence transformer back.The two ends of test button switch temperature switch in parallel and the 4th piezo-resistance.Supply voltage just often, test button disconnects, temperature switch also disconnects, the 4th piezo-resistance is high-impedance state; When supply voltage is higher than rated voltage, or surge voltage and thunderstorm hour arranged, the 4th piezo-resistance moment was low resistive state, be equivalent to press test button, analog leakance test, the electric current that passes the phase line of zero-sequence transformer and center line is just unequal, the winding of zero-sequence transformer will induce faint voltage signal, amplify through control chip, relatively, upset triggers the controllable silicon conducting for high level by the output of control chip 7 pin, make the both positive and negative polarity short circuit of full-wave rectifying circuit, electric current moment increase by main tripping coil, iron core action drive is resetted link up with and the dropout of insulation hook, thus generation tripping operation action, deenergization.

When circuit produces when overheated, temperature switch is connected, the conducting that is triggered of analog leakance test circuit turn-on, the controllable silicon in the control circuit, and magnetictrip drives the hook that resets rapidly and threads off deenergization with the insulation hook.

In order to guarantee that control chip is having thunderstorm hour not burnt out, the power line two ends of full-wave rectifying circuit also are parallel with three piezo-resistances, the voltage that is higher than three piezo-resistances when lightning voltage continuously will be absorbed by piezo-resistance, lightning current is during greater than three piezo-resistance ducting capacity, piezo-resistance conducting simulation overvoltage signal makes control chip trigger the controllable silicon conducting.Main tripping coil energising action, deenergization makes the power line ground connection of electrical appliance, protection electrical appliance simultaneously.

Therefore, this super thunder-prevention protection mobile jack has functions such as lightning protection, short-circuit protection, earth leakage protective, overcurrent protection, overvoltage protection, is the optimal selection of safeguarding electric equipment.

Description of drawings

Fig. 1 is the main TV structure schematic diagram of present embodiment (removing housing).

Fig. 2 is the structural representation of looking up of present embodiment (removing housing).

Fig. 3 is the circuit theory diagrams of present embodiment.

Among Fig. 2 and Fig. 3: 1, over-current sensor, 2, zero-sequence transformer, 3, movable contact spring, 4, main tripping coil, 5, short circuit tripping coil, 6, iron core, 7, spring, 8, hook resets, 9, insulation hook, 10, moving contact, 11, fixed contact, 12, static contact, 13, circuit board, 15, back-moving spring, 16, reset button, 17, control circuit, 18, power supply indicator, 19, test button, 20, the circuit board movable contact spring, 21, skeleton.

Embodiment

The utility model is described in further detail below in conjunction with drawings and Examples.

See figures.1.and.2; a kind of super thunder-prevention protection mobile jack; it comprises housing and circuit board 13 and is arranged on over-current sensor 1 on the circuit board 13; zero-sequence transformer 2; test button 19; reset button 16; control circuit 17; magnetictrip; two static contacts 3 of the N utmost point and the L utmost point; magnetictrip is by skeleton 21; main tripping coil 4 and short circuit tripping coil 5; iron core 6 and spring 7 constitute; two movable contact spring 3 one ends are arranged on the circuit board 13; an insulation hook 9 is set on it; the other end is respectively equipped with a moving contact 10; suit back-moving spring 15 on the reset button 16; the bottom is provided with the hook 8 that resets with the hook 9 relative configurations of insulating; the hook 8 that resets is connected with iron core 6; one end of two static contacts 12 is respectively equipped with a fixed contact 11; the other end is arranged on the circuit board 13; the N utmost point passes zero-sequence transformer 2 outside bendings and strides across overcurrent electric transducer 1; the L utmost point passes zero-sequence transformer 2 and over-current sensor 1 simultaneously, in the winding access control circuit 17 of zero-sequence transformer 2.

Referring to Fig. 1 and Fig. 2, this super thunder-prevention protection mobile jack manufacturing process is as follows: circuit board 13 as substrate, is welded on all electronic devices and components in the control circuit 17 on the circuit board 13; The L utmost point, two movable contact springs of the N utmost point 3 are riveted together with insulation hook 9, respectively rivet over moving contact 10, an other end of movable contact spring 3 one ends passes and is welded on the N polar circuit of circuit board 13 after zero-sequence transformer 2 back N extremely outwards bend, stride across over-current sensor 1, the L utmost point passes and passes an end that is welded on short circuit tripping coil 5 behind the over-current sensor 1 after the zero-sequence transformer 2 again, the other end of short circuit tripping coil 5 is welded on the L polar circuit of circuit board 13, and the skeleton 21 of main tripping coil 4 and short circuit tripping coil 5 is fixed on the center of circuit board 13; Reset button 16 is installed the hook 8 that resets, cover upper reset spring 15, and behind the hole on the circuit board 13 of packing into, the iron core 6 of packing in the slotted hole on the hook 8 that resets is in the hole of the coil rack 21 of packing into behind the iron core 6 string upper springs 7; Test button 19 presses the circuit board movable contact spring 20 that is welded on the circuit board 13; One end of two static contacts 12 fixed contact 11 of riveting over respectively, the other end riveting of static contact 12 and are told the L utmost point, the N utmost point on circuit board 13.So just constituted many defencive functions electronic switch of a very compact and electromechanical integration.

Referring to Fig. 1 and Fig. 2, the volume of over-current sensor 1 is 6mm * φ 15mm.

Referring to Fig. 1 and Fig. 3, control circuit 17 comprises the control chip IC of the signal of telecommunication that is used to connect zero-sequence transformer 2 and the induction of over-current sensor 1 winding, controllable silicon VT1 by control chip IC triggering, the lever arm of 1 liang of termination potentiometer of winding L RP of zero-sequence transformer 2, one end is connected to 1 pin of control chip IC, the negative electrode of voltage-stabiliser tube D2, the 3rd current limliting is the end that resistance R 5 is regulated in sensitivity, second filtering is the end of anti-interference capacitor C5 and the end that ground connection is partiting dc capacitor C6, the other end is connected to the anode of voltage-stabiliser tube D2, one end of anti-surge K switch 3, the 3rd current limliting is the other end that resistance R 5 is regulated in sensitivity, second filtering is the other end of anti-interference capacitor C5 and the end of build-out resistor R6,2 pin of another termination control chip IC of build-out resistor R6, the end of the winding L 2 one termination potentiometer RP of over-current sensor 1, one end of another termination power adjustments resistance R 3, the other end of another termination potentiometer RP of power adjustments resistance R 3 and the other end of anti-surge K switch 3, short circuit tripping coil 5 (L3) is connected on the phase line of major loop, one termination power phase line of main tripping coil 4 (L4) and short circuit tripping coil 5 (L3), another termination full-wave rectifying circuit D1, D2, D3,1 pin of D4, full-wave rectifying circuit D1, D2, D3,3 pin of D4 connect center line, the anode of controllable silicon VT1 meets full-wave rectifying circuit D1, D2, D3, the end of 2 pin of D4 and the first current-limiting resistance R1, the negative electrode of controllable silicon VT1 meets full-wave rectifying circuit D1, D2, D3,4 pin of D4,3 pin of control chip IC, the end of anti-interference capacitor C1, the end of the first filter capacitor C2, an end and the ground connection of the first coupling ground capacity C3 are the other end of partiting dc capacitor C6, the control utmost point of controllable silicon VT1 connects 7 pin of control chip IC, the end of the other end of anti-interference capacitor C1 and the second matching capacitance C4, the anode of the other end sending and receiving optical diode LED (power supply indicator 18) of the first current-limiting resistance R1, the negative electrode of LED (power supply indicator 18) connects the other end of the first filter capacitor C2 and 8 pin of control chip IC, 6 pin of another termination control chip IC of the second matching capacitance C4,4 pin and 5 pin of another termination control chip IC of the first coupling ground capacity C3.

Referring to Fig. 3, control chip IC is single-row VG54123 cake core.

Referring to Fig. 1 and Fig. 3, analog leakance test circuit that constitutes by K switch 1 series connection of simulation leak resistance R2 and test button 19 of cross-over connection on the phase line of on zero-sequence transformer 2 center lines in front and zero-sequence transformer 2 back.

Referring to Fig. 3, the two ends of the K switch 1 of test button 19 temperature switch RS in parallel and the 4th piezo-resistance RV4.

Referring to Fig. 3, be parallel with three piezo-resistance RV1, RV2, RV3 between power line L, the N of full-wave rectifying circuit D1, D2, D3, D4, the E.

Also can insert a tripping alarm circuit that constitutes by the 4th current-limiting resistance, piezoelectric ceramic piece and the series connection of starter neon bulb between power supply phase line and the center line.

The operation principle of this super thunder-prevention protection mobile jack is as follows:

When pressing reset button 16, switch is energising just; When pressing test button 19, switch is outage just.When causing short circuit, overload, overvoltage, overheated, electric leakage by various different reasons in the circuit loop, protective device will trip immediately, deenergization, protection personal safety and electrical appliance equipment.

Press energize:

When pressing reset button 16, resetting hook 8 will be under the promotion of spring 7, and fixing insulation is linked up with 9 closely on movable contact spring 3, and articulates.When hand was decontroled, because the effect of back-moving spring 15 contacts moving contact 10 with fixed contact 11, power supply indicator 18 (LED among Fig. 3) was bright, finishes connection.

Deenergization:

When pressing test button 19, zero-sequence transformer 2 induces a faint simulation electrical leakage voltage signal, amplifying, compare, overturn through control chip IC is high level, 7 pin output by control chip IC, trigger controllable silicon VT1, make its conducting, main simultaneously tripping coil 4 energisings, generation magnetic field, iron core 6 in the main tripping coil 4 is spurred inwards, hook draws back, make tripping mechanism (hook 8 and insulation hook 9 reset) thread off, finish deenergization, power supply indicator 18 (LED among Fig. 3) extinguishes.

When cause short circuit, the stall of motor oil starvation or power consumption equipment to make moist electric current when increasing in the circuit loop because of wire insulation is aging; over-current sensor 1 will induce faint signal voltage; the same with simulation electrical leakage voltage signal; make that protective device is threaded off rapidly, deenergization; and two leads that make electrical appliance ground connection immediately, the protection electrical appliance.

When electric leakage being arranged in the circuit loop or when having the people to get an electric shock, zero-sequence transformer 2 will induce faint electric leakage signal voltage, the same with simulation electrical leakage voltage signal, make that protective device is threaded off rapidly, deenergization.Thunder and lightning, surge, overvoltage protection are by piezo-resistance RV4 control, and overtemperature protection is by temperature switch RS control, and short-circuit protection is controlled by short circuit tripping coil 5 (L3).Simultaneously, switch because of the tripping operation of various failure causes after, and make two power lines of electrical appliance ground connection immediately, protection electrical equipment is not smashed by thunder and lightning etc.

The various switches of making according to the utility model, socket etc. all belong to protection range of the present utility model.

Claims (9)

1; a kind of super thunder-prevention protection mobile jack; it comprises housing and circuit board (13) and is arranged on over-current sensor (1) on the circuit board (13); zero-sequence transformer (2); test button (19); reset button (16); control circuit (17); magnetictrip; two static contacts (12) of the N utmost point and the L utmost point and movable contact spring (3); magnetictrip is by skeleton (21); main tripping coil (4) and short circuit tripping coil (5); iron core (6) and spring (7) constitute; it is characterized in that: two movable contact spring (3) one ends are arranged on the circuit board (13); an insulation hook (9) is set on it; the other end is respectively equipped with a moving contact (10); reset button (16) goes up suit back-moving spring (15); the bottom is provided with the hook (8) that resets of relative configuration with the hook (9) that insulate; the hook (8) that resets is connected with iron core (6); one end of two static contacts (12) is respectively equipped with a fixed contact (11); the other end is arranged on the circuit board (13); the N utmost point passes the outside bending of zero-sequence transformer (2) and strides across over-current sensor (1); the L utmost point passes zero-sequence transformer (2) and over-current sensor (1) simultaneously, in the winding access control circuit (17) of zero-sequence transformer (2).

2, super thunder-prevention protection mobile jack according to claim 1 is characterized in that: described circuit board (13) is welded on all electronic devices and components in the control circuit (17) on the circuit board (13) as substrate; The L utmost point, two movable contact springs of the N utmost point (3) are riveted together with insulation hook (9), movable contact spring (3) the one ends moving contact (10) of respectively riveting over, the other end passes zero-sequence transformer (2) back N and extremely outwards bends, be welded on the N polar circuit of circuit board (13) after striding across over-current sensor (1), the L utmost point passes and passes an end that is welded on short circuit tripping coil (5) behind the over-current sensor (1) after the zero-sequence transformer (2) again, the other end of short circuit tripping coil (5) is welded on the L polar circuit of circuit board (13), and the skeleton (21) of main tripping coil (4) and short circuit tripping coil (5) is fixed on the center of circuit board (13); Reset button (16) is installed the hook (8) that resets, cover upper reset spring (15), and behind the hole on the circuit board of packing into (13), the iron core (6) of packing in the slotted hole on the hook (8) that resets is in the hole of coil rack (21) of packing into behind iron core (6) the string upper spring (7); Test button (19) presses the circuit board movable contact spring (20) that is welded on the circuit board (13); One end of two static contacts (12) fixed contact (11) of riveting over respectively, the other end riveting of static contact (12) and are told the L utmost point, the N utmost point on circuit board (13).

3, super thunder-prevention protection mobile jack according to claim 1 is characterized in that: the volume of described over-current sensor (1) is 6mm * φ 15mm.

4; super thunder-prevention protection mobile jack according to claim 1; it is characterized in that: described control circuit (17) comprises the control chip (IC) of the signal of telecommunication that is used to connect zero-sequence transformer (2) and the induction of over-current sensor (1) winding; controllable silicon (VT1) by control chip (IC) triggering; the lever arm of winding (L1) the two termination potentiometers (RP) of zero-sequence transformer (2); one end is connected to 1 pin of control chip (IC); the negative electrode of voltage-stabiliser tube (D2); the 3rd current limliting is the end that resistance (R5) is regulated in sensitivity; second filtering is that an end and the ground connection of anti-interference capacitor (C5) is an end of partiting dc capacitor (C6); the other end is connected to the anode of voltage-stabiliser tube (D2); one end of anti-surge switch (K3); the 3rd current limliting is the other end that resistance (R5) is regulated in sensitivity; second filtering is the other end of anti-interference capacitor (C5) and an end of build-out resistor (R6); 2 pin of another termination control chip (IC) of build-out resistor (R6); one end of winding (L2) termination potentiometer (RP) of over-current sensor (1); one end of another termination power adjustments resistance (R3); the other end of another termination potentiometer (RP) of power adjustments resistance (R3) and the other end of anti-surge switch (K3); short circuit tripping coil (5) is connected on the phase line of major loop; one termination power phase line of main tripping coil (4) and short circuit tripping coil (5); another termination full-wave rectifying circuit (D1; D2; D3; D4) 1 pin; full-wave rectifying circuit (D1; D2; D3; D4) 3 pin connect center line; the anode of controllable silicon (VT1) meets full-wave rectifying circuit (D1; D2; D3; one end of 2 pin D4) and first current-limiting resistance (R1); the negative electrode of controllable silicon (VT1) meets full-wave rectifying circuit (D1; D2; D3; D4) 4 pin; 3 pin of control chip (IC); one end of anti-interference capacitor (C1); one end of first filter capacitor (C2); one end and the ground connection of the first coupling ground capacity (C3) are the other end of partiting dc capacitor (C6); the control utmost point of controllable silicon (VT1) connects 7 pin of control chip (IC); one end of the other end of anti-interference capacitor (C1) and second matching capacitance (C4); the anode of the other end sending and receiving optical diode (LED) of first current-limiting resistance (R1); the negative electrode of light-emitting diode (LED) connects the other end of first filter capacitor (C2) and 8 pin of control chip (IC); 6 pin of another termination control chip (IC) of second matching capacitance (C4), 4 pin and 5 pin of another termination control chip (IC) of the first coupling ground capacity (C3).

5, super thunder-prevention protection mobile jack according to claim 4 is characterized in that: described control chip (IC) is single-row VG54123 cake core.

6, super thunder-prevention protection mobile jack according to claim 4 is characterized in that: analog leakance test circuit by switch (K1) the series connection formation of simulation leak resistance (R2) and test button (19) of cross-over connection on described zero-sequence transformer (2) center line in front and on the phase line of zero-sequence transformer (2) back.

7, super thunder-prevention protection mobile jack according to claim 6 is characterized in that: the two ends of the switch (K1) of described test button (19) temperature switch (RS) in parallel and the 4th piezo-resistance (RV4).

8, super thunder-prevention protection mobile jack according to claim 4 is characterized in that: be parallel with three piezo-resistances (RV1, RV2, RV3) between the power line (L, N, E) of described full-wave rectifying circuit (D1, D2, D3, D4).

9, super thunder-prevention protection mobile jack according to claim 4 is characterized in that: also insert a tripping alarm circuit that is made of the 4th current-limiting resistance, piezoelectric ceramic piece and the series connection of starter neon bulb between described power supply phase line and the center line.

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