CN100358210C

CN100358210C - Anti-shock anti-short circuit no-contact energy saving safety device for three phase AC power source

Info

Publication number: CN100358210C
Application number: CNB2004100561498A
Authority: CN
Inventors: 陈金明
Original assignee: Individual
Current assignee: Individual
Priority date: 2004-08-18
Filing date: 2004-08-18
Publication date: 2007-12-26
Anticipated expiration: 2024-08-18
Also published as: CN1588742A

Abstract

The present invention relates to an electric shock and short circuit preventing, non-contact and energy-saving safety device with a 380V three-phase power supply, which is installed on a transformer in a direct distribution mode. The present invention can replace a distribution box of a transformer, an electric shock protector, an air switch, a slab knife, an electric welding device, etc. A three-phase electric shock preventing line is completed by a control device, and a three-way non-contact switch circuit is matched with a three-way light control delay control circuit to form a three-phase short circuit preventing line; the short circuit preventing line composed of the three-way non-contact switch circuit, a neutral line, a centre tap, two rectification voltage stabilization light control delay circuits of each phase; an electric welding line is composed of a secondary tap and the neutral line. The non-contact switch circuit is composed of a bidirectional thyristor and a unidirectional thyristor. The line loss can be saved by 95%, the electric shock and the short circuit can be prevented, and non-contact output and electric welding can be realized. With the adoption of the present invention, touching wires with electricity by people can be safe, and short circuit at the time of wire combination can not fire; thus, hidden troubles hidden in people can be solved.

Description

The three-phase alternating-current supply protection against electric shock is prevented short circuit no contact energy-saving safety

Affiliated technical field

Patent of the present invention is on inventor's " electric-shock-proof piezoelectric unit for triphase power supply " 92229587.5 patent basis, and further further investigation improves the anti-short circuit no contact energy-saving safety of a kind of 380V three-phase alternating-current supply protection against electric shock of invention.

Background technology

Electricity is a kind of cannot see, and can not hear, and can't hear, the invisible tiger of the no trace of making a return journey, it brings harm can for people's life and property whenever and wherever possible, because in industrial and agricultural production and household electrical appliance, people often want and electrically contact, so generation is got an electric shock and the short circuit firing accident is conspicuous.The numerical example accident that all has every year electric shock and short circuit to catch fire in China takes place, and is that transformer self catches fire sometimes, and its main cause is: 1, the fuse of the slotting insurance of plug-in strip on the distribution board and porcelain is too thick.2, pitting of contacts can not separate and causes and catch fire.Sometimes power supply broken string ground connection and when rainy line insulation reduce, all can a large amount of electric currents of loss.

For overcoming the above problems, people have studied a kind of earth leakage protector on the electric shock problem.On short circuit problem, people have studied a kind of air switch, but this switch is little owing to electric current, can not directly receive on the total power switch and control, but the insurance porcelain on the transformer distribution board is inserted and what improvement plug-in strip does not have all the time.Below that its principle and weaknesses analysis is as follows:

One, the operation principle of earth leakage protector is: a zero-sequence current is arranged from the power supply zero sequence current mutual inductor of flowing through when the people gets an electric shock, arrive ground by human body, get back to the neutral point of transformer, form the loop, this electric current induces a signal in instrument transformer, sends into relay after amplifier amplifies, if this electric current reaches when influencing human body safety, relay is action just, and automatic switch is threaded off, and cutting off the electricity supply prevents to get an electric shock.Its shortcoming is: (1) people contingency is touched electric wire, and the tripping operation then of still getting an electric shock earlier also has the possibility that is burnt out as hand, pin.(2) heart patient still is in peril of one's life just in case touch live wire.Branch is run into the line tripping operation when (3) blowing, and the insulation degree reduces also tripping operation when raining, and has both increased electricity and has decreased, and brings a lot of troubles to the electrician again.(4) jump enough certain number of times, contact rapid wear and insensitive, still dangerous.(5) electrician that gone bad who has does not repair yet, and the electrician who has dislikes trouble, and just simply dismantle need not, and this still brings a kind of danger side of body to people, does not have the sense of security.Do not trip when (6) ground connection time tripping operation, short circuit doubling, easily bring serious fire to people.

Two, the operation principle of air switch is: after the two line short circuits or the excessive air switch rated current that surpasses design of loading, Inside Air Temperature raises, and causes controlling organization with dump.Its shortcoming is: (1) is confined to the branch branch road and can only uses with the load of tens peaces.(2) can't on the distribution board of transformer, use.(3) need manually send after the tripping operation.(4) contact is fragile.

Three, distribution board does not have any operation principle, and it is inserted insurance, slabstone plug-in strip and earth leakage protector switch etc. by voltmeter, current transformer, ammeter, porcelain and forms circuits such as voltage indication, electric current indication, short circuit safety socket, power supply control.Its shortcoming is: (1) circuit connecting terminal is too many, the scaling loss of easily striking sparks.(2) after neutral line blown fuse burnt out, it can make the subscriber's line of three tunnel all use 220V AC power form polyphone, and the big street lamp of loading does not work, and the electrical equipment band is motionless, load little road burning bulb, burning electrical equipment.

Summary of the invention

Patent purpose of the present invention just is to overcome the existing existing deficiency of transformer main distribution board control circuit and line loss is big and protection against electric shock, anti-short circuit and the masty difficult problem of contact spark, and provide a kind of 380V three-phase alternating-current supply protection against electric shock that is used with the transformer output to prevent short circuit no contact energy-saving safety, use it, both energy-conservation, but protection against electric shock again, can also prevent short circuit, the noncontacting switch facility of all-electronin control distribution line is arranged again.

Patent 380V three-phase alternating-current supply protection against electric shock of the present invention is prevented short circuit no contact energy-saving safety, comprising the primary and secondary winding L of the three-phase of safety governor ₁, L ₂, L ₃, L ₄, L ₅, L ₆, the primary and secondary winding of every phase is fixed on (as a Fig. 2) A or the B frame, makes primary and secondary umber of turn, cross-sectional area identical, mutually isolated insulation; Again three primary and secondary winding wire bags of three-phase are installed in respectively on three posts of the high magnetic conduction silicon sheet core of shell-type; After three head ends of three elementary windings or tail end be connected be the neutral line, be connected with the transformer neutral line; Its excess-three stature is connected with the 380V three-phase power line.Three tail ends of three secondary winding are connected is the output neutral line again; Its excess-three stature is that 380V three-phase alternating-current supply output line is connected with the noncontacting switch bidirectional triode thyristor; The bidirectional triode thyristor trigger electrode is connected with anti-short-circuit control circuit, thereby it was both energy-conservation to reach output 380V three-phase alternating-current supply, again protection against electric shock, anti-short circuit, the contactless purpose of design of switch.From the three-phase 380V AC power of transformer output through voltmeter V ₁, V ₂With the A of the elementary winding of safety controller mutually, three joints of B phase, C phase connect; Three road input indicator D ₁, D ₂, D ₃An end and A ₁Phase, B ₁Phase, C ₁Three joints of phase connect; The other end is connected on the elementary winding neutral line jointly.The secondary winding L of A phase ₄In tap 2 and the neutral line that connected of tail end through protective tube E ₁Pontic rectifying block DT in back and the first via regulator rectifier circuit ₁, regulator block WT ₁, filter capacitor C ₁, C ₂With the pontic rectifying block DT in the second road regulator rectifier circuit ₂, regulator block WT ₂, filter capacitor C ₃, C ₄Connect; Bulb D in first via regulator rectifier circuit and the light-operated circuit ₇With the one-way SCR trigger electrode angle of flow resistance R in the non-contact switch circuit ₂₉, the relay J in the photoelectricity coupling delay circuit ₄Connecting terminal, one-way SCR CTK ₁, bidirectional triode thyristor trigger electrode angle of flow resistance R ₃₀, bidirectional triode thyristor CTS ₁, the output voltage Table V ₃, output indicator D ₄Connect; Bidirectional triode thyristor CTS in the non-contact switch circuit ₁End output, an end and secondary winding L ₄In tap 1 connect; Biasing resistor R in the second road regulator rectifier circuit and the light-operated circuit ₁, R ₂, R ₃, R ₁₀, delay capacitor C ₁₃, control valve BG ₁, BG ₂, relay J ₁Pull-in winding, photo resistance RO ₁Connect; Light-operated circuit repeat circuit J ₁Connecting terminal and the biasing resistor R in the photoelectricity coupling delay circuit ₁₄, R ₁₅, R ₁₆, R ₂₃, R ₂₄, delay capacitor C ₁₆, control valve BG ₇, BG ₁₀, photoelectrical coupler M ₁, relay J ₄Pull-in winding connect.B phase secondary winding L ₅In tap 2 and the neutral line that connected of tail end through protective tube E ₂Pontic rectifying block DT in back and the first via regulator rectifier circuit ₃, regulator block WT ₃, filter capacitor C ₅, C ₆With the pontic rectifying block DT in the second road regulator rectifier circuit ₄, regulator block WT ₄, filter capacitor C ₇, C ₈Connect; Bulb D in first via regulator rectifier circuit and the light-operated circuit ₈With the one-way SCR trigger electrode angle of flow resistance R in the non-contact switch circuit ₃₁, the relay J in the photoelectricity coupling delay circuit ₅Connecting terminal, one-way SCR CTK ₂, bidirectional triode thyristor trigger electrode angle of flow resistance R ₃₂, bidirectional triode thyristor CTS ₂, the output voltage Table V ₃, V ₄, output indicator D ₅Connect; Bidirectional triode thyristor CTS ₂End output, an end and secondary winding L ₅In tap 1 connect; Biasing resistor R in the second road regulator rectifier circuit and the light-operated circuit ₄, R ₅, R ₆, R ₁₁, delay capacitor C ₁₄, control valve BG ₂, BG ₅, relay J ₂Pull-in winding, photo resistance RO ₂Connect; Light-operated circuit repeat circuit J ₂Connecting terminal and the biasing resistor R in the photoelectricity coupling delay circuit ₁₇, R ₁₈, R ₁₉, R ₂₅, R ₂₆, delay capacitor C ₁₇, control valve BG ₈, BG ₁₁, photoelectrical coupler M ₂, relay J ₅Pull-in winding connect.C phase secondary winding L ₆In tap 2 and the neutral line that connected of tail end through protective tube E ₃Pontic rectifying block DT in back and the first via regulator rectifier circuit ₅, regulator block WT ₅, filter capacitor C ₉, C ₁₀With the pontic rectifying block DT in the second road regulator rectifier circuit ₆, regulator block WT ₆, filter capacitor C ₁₁, C ₁₂Connect; Bulb D in first via regulator rectifier circuit and the light-operated circuit ₉With the one-way SCR trigger electrode angle of flow resistance R in the non-contact switch circuit ₃₁, photoelectricity coupling delay circuit repeat circuit J ₆Connecting terminal; One-way SCR CTK ₃, bidirectional triode thyristor trigger electrode angle of flow resistance R ₃₄, bidirectional triode thyristor CTS ₃, the output voltage Table V ₄, output indicator D ₆Connect; Bidirectional triode thyristor CTS ₃End output, an end and secondary winding L ₆Tap 1 connect; Biasing resistor R in the second road regulator rectifier circuit and the light-operated circuit ₇, R ₈, R ₉, R ₁₃, delay capacitor C ₁₅, control valve BG ₃, BG ₆, relay J ₃Pull-in winding, photo resistance RO ₃Connect; Relay J in the light-operated circuit ₃Connecting terminal and the biasing resistor R in the photoelectricity coupling delay circuit ₂₀, R ₂₁, R ₂₂, R ₂₇, R ₂₈, delay capacitor C ₁₈, control valve BG ₉, BG ₁₂, photoelectrical coupler M ₃, relay J ₆Pull-in winding connect; Secondary winding L ₆In tap Z and neutral line O ₁Cooperate and be the electric welding circuit; Lightning arrester T is connected with the neutral line of primary and secondary winding.

Description of drawings

Fig. 1 circuit theory diagrams

Fig. 2 winding skeleton drawing

Circuit theory is seen Fig. 1

TM is a three-phase safe controller among the figure. When the input of three-phase 380V AC power After connecting the elementary A of safety controller, B, C three phase winding input circuits, voltmeter V₁、V ₂There is voltage to show indication, input indicator lamp D₁、D ₂、D ₃Bright, this has illustrated defeated It is normal to enter the end energising. Meanwhile, at secondary windings A₁、B ₁、C ₁Induce in the three-phase with The 380V AC power that elementary input is identical, and this three-phase power supply is because their neutral conductor With the earth have no related, so in charged situation, touch the equal safety electric shock-prevention of any single line, And break online behind the ground and rainy insulaion resistance does not all have current loss when reducing, than former line Damage can save energy more than 95%. A₁、B ₁、C ₁The control operation principle of three-phase three tunnel is identical, below with A₁Introduce mutually its operation principle: as secondary A₁、B ₁、C ₁After three-phase induces the 380V alternating voltage, and at A₁

Phase winding L

₄1,3 taps just induce alternating current 220V voltage, just induce in 2,3 taps and exchange 14V voltage, 14V voltage is through protective tube E₁Lead to into pontic rectifying block DT₁The rear whole 14V direct current voltage that goes out is through Ji type filter capacitor C₁、C ₂And 7812WT₁Behind the regulator block, in capacitor C₁Just holding to produce 18V direct current voltage, at C₂Just extremely produce stably first via 12V direct current voltage. Because pontic rectifying block DT₁、DT ₂Input is and connects, so in capacitor C₄Just extremely produce stable Two road 12V dc sources. The second road 12V is just holding and is passing through R after energising₁To capacitor C₁₃Charging, control valve BG₁Do not work, when about 1 minute capacitor C of process design time₁₃After being full of electricity, control valve BG₁At R₁、R ₂、R ₃Start working under the effect of biasing resistance, because of the biasing resistance R₁₀Through BG₁Emitter stage is given BG₄Bias voltage of base stage makes its conducting, but can't be with relay J₁Adhesive is because photo resistance RO₁Resistance value is too big, relay J₁Can not adhesive, normally-closed contact is not opened, so BG₇Do not have bias voltage just can't work, cause Photoelectric coupling time-delay circuit and non-contact switch circuit all can't be worked. When connecting bulb D₇When bright, photo resistance becomes O Ω, relay J by tens K Ω₁With regard to adhesive, normally-closed contact is opened, make BG₇The earth point of base stage disconnects, and the 12V direct current is through the biasing resistance R₁₄Give delay capacitor C₁₆Charging is after being full of in about 5～10 minutes, in the biasing resistance R₁₄、R ₁₅、R ₁₆Effect under, BG₇Saturation conduction is in the biasing resistance R₂₃、R ₂₄Effect under, BG₁₀Saturation conduction, first level led bright, the secondary photosensitive tube conducting in the photoelectrical coupler, relay J₄Adhesive, the normally opened contact closure, with the positive pole of first via regulator rectifier circuit through R₂₉One-way SCR CTK₁Trigger electrode trigger, make its one-way SCR CTR₁Conducting, one-way SCR CTK₁With the positive pole of the second road regulator rectifier circuit through power resistor R₃₀With two-way controllable silicon CTS₁Trigger electrode triggers, and makes two-way controlled silicon conducting, at this moment A₁Circuitry phase energising conducting, output indicator lamp D₄Bright, output voltage meter V₃The voltage indication is arranged. This process is just asked contactless switch The key to exercises is determined. C₁Mutually secondary tap Z cooperates neutral conductor O₁But electric welding.

But work as A₁When phase line and output neutral conductor doubling short circuit, circuit variation is as follows: instantaneous short circuit → indicator lamp D₄Go out → output voltage V₃The indication fall half → secondary windings L₄Tap 1,3 no-voltages →

tap

2,3 no-voltages → first via pontic rectifying block DT₁No-voltage → output end of pressure-stabilizing no-voltage → bulb D₇Go out → photo resistance RO₁Resistance becomes greatly tens K Ω. Meanwhile second road and bridge body Rectification DT₂No-voltage → regulator block WT₂Output no-voltage → light-operated circuit BG₁、BG ₄Stop work → relay J₁Not adhesive, normally-closed contact are again closed, BG₇Base stage and ground short circuit, simultaneously capacitor C₁₃To R₂、R ₃Discharge, capacitor C₁₆To R₁₅、R ₁₆Discharge → BG₁₀Stopping work → photoelectrical coupler primary diode goes out → and inferior utmost point photosensitive tube resistance becomes big cut-out relay J₄Not adhesive, normally opened contact disconnection → one-way SCR CTK₁Triggerless voltage disconnection → two-way controllable silicon CTS₁Triggerless disconnects, and reaches Arrived the purpose that output short-circuit has a power failure.

If fault is in time got rid of after the short circuit, this circuit normally sent in 5～10 minutes.

Do not get rid of as fault after the short circuit, please see following operating circuit: instantaneous short circuit → output indicator D ₄Go out → bidirectional triode thyristor CTS ₁Disconnection → A ₁Phase secondary winding L ₄1,3 tap voltage recovery → taps, 2,3 voltages recover normal → first via, the second road rectifying voltage regulator is all resumed work → indicator light D ₇Bright → photo resistance RO ₁It is that 0 Ω → 12V direct current is through R that resistance diminishes ₁Give capacitor C ₁₃About 1 minute → control valve BG charges ₁, BG ₄Conducting → relay J ₁Adhesive → control valve BG ₇Base stage shorted to earth point disconnection → 12V direct current is through R ₁₄Give capacitor C ₁₆Charging, about 5～10 minutes → control valve BG ₇, BG ₁₀Saturation conduction → photoelectrical coupler primary diode is bright, secondary photosensitive tube conducting → relay J ₄Adhesive → one-way SCR CTK ₁Conducting → bidirectional triode thyristor CTS is triggered ₁The still short circuit of conducting → output that is triggered, no-voltage causes A ₁1,3 taps of phase secondary winding, 2,3 tap no-voltages → all circuit all quit work.This is an energising ... short circuit power cut ... energising ... the pulse cycle process of short circuit power cut each 5～10 minutes, is sent until fault is got rid of promptly normal recovery again.

It more than is the short-circuit conditions of the output line and the neutral line.If A ₁Phase and B ₁The phase short circuit, working condition and A ₁With neutral line O ₁Short circuit is basic identical, and difference is A ₁With O ₁Voltage is 220V, A ₁Phase B ₁Voltage is 380V, is two the road to have a power failure simultaneously by principle, but since the time relationship of short circuit and control circuit at A ₁With neutral line O ₁Between and B ₁With neutral line O ₁Between voltage relationship, if in circuit, use A ₁B collides ₁Phase makes its short circuit, so A ₁With neutral line O ₁Voltage descend earlier, so A ₁Have a power failure earlier mutually.As use B ₁A collides ₁Its short circuit of the mutual-assistance, B so ₁Have a power failure mutually, through test of many times, in this circuit, that is to say, duration of short circuit is the crucial reason who stops, and that is I guess wrong 0.01 second.Its operation principle no longer describes in detail with last identical.

By above circuit analysis, reached not only energy-conservation, but also short protection against electric shock, the anti-short circuit of doubling, distribution line export contactless goal of the invention.

Embodiment

Patent of the present invention is that example is introduced embodiment with 50KW, the anti-short circuit no contact energy-saving safety of 380V three-phase alternating-current supply protection against electric shock:

At first be processed into the iron core of shell-type with the above high magnetic conduction silicon steel sheet of 18000 Gausses by the magnetic conduction direction, every magnetic column section is 100 square centimeters.Coil rack is processed into 3 on A or B formula skeleton with insulation board, uses 40mm ²The oxide-film flat type aluminium wire, or use 35mm ²Copper cash with elementary winding around 110 circles, secondary general many because of magnetic consumption is arranged around 5～10% circles, secondary around 125 circles in 0～8 circle place tap, get any one 25 circle place taps mutually, when adopting the Type B skeleton, add insulant between primary and secondary winding.Water insulating varnish oven dry, again with the epoxy resin oven dry that is fixed.Shell type core is installed on the skeleton of three line bags that wound, by winding diagram its primary and secondary joint is connected, select for use more than the withstand voltage 500V, three of the bidirectional triode thyristors of electric current 500A are connected with three joints of secondary output end.Press circuit theory diagrams, electronic original part is installed on the circuit board, input 6 statures of circuit board connect with the tap 2 and the neutral line of three secondary winding respectively, output three statures are connected with three The Trigger of Bidirectional Triode Thyristor utmost points respectively, pack into then in the shell that processes, with input voltage table, indicator light and output voltage meter, indicator light, the input and the output that are installed on the shell controller in back and the shell connect by schematic diagram.Eight statures of input and output are connected on the binding post respectively.

With the insulation against ground and the phase insulation of megohmmeter measurement output, more than insulation resistance 100 megaohms, touch till the safety with the hand examination back.

Insert the test of 380V three-phase alternating-current supply, low as output end voltage, can debug the adjustable resistance of trigger electrode, reach desirable voltage.

What measure every phase with ammeter is zero to earth-current.

Measuring voltage to earth with voltmeter is zero.

Be coupled delay circuit 5～10 minutes of the normal and control circuit delay circuit of regulating silicon controlled triggering and conducting 1 minute, photoelectricity.

Make short circuit test, make A earlier ₁, B ₁, C ₁Three-phase and neutral line short circuit test remake A ₁, B ₁Phase, C ₁, A ₁Phase, B ₁, C ₁The short circuit test of phase, short circuit power-off time are about 0.1 second.

Power test is measured: use full power load test 4 hours.

Reach every design standard at last, reach both energy-conservation, protection against electric shock, anti-short circuit again, export contactless goal of the invention.

Behind this electric test installation forming, be installed in the transformer edge of table, input is connected with the secondary output end of transformer, and output and user total circuit of powering is connected.Power can be produced series of products such as 10KW, 20KW, 30KW, 50KW, 100KW, 200KW, 500KW.Use it, both energy-conservation, protection against electric shock, anti-short circuit, anti-thunder and lightning, antiground, anti-high pressure seal in low pressure again, and all use the user of this TV station transformer frequency response that a kind of sense of security is all arranged; Can replace original distribution box, electric welding machine, earth leakage protector, slabstone plug-in strip etc.; Can reduce loss of life or personal injury and short circuit and catch fire and make the generation of property loss, solve now a safety utilization of electric power difficult problem both at home and abroad; Be the revolution on the safety utilization of electric power history, removed a kind of psychology that people fear electric-tiger, equal a kind of invisible personal property dual fail-safe.

Patent of the present invention has been filled up the blank that does not have this kind electrical equipment on the current domestic and international market, it was both energy-conservation to have solved the 380V three-phase alternating-current supply, charged again short safety, and the short circuit doubling is missing of ignition, the contactless difficult problem of power supply plug-in strip is that a kind of desirable Quan Chang, full village use one energy-saving safety electrical equipment.

Claims

1, the anti-short circuit no contact energy-saving safety of a kind of 380V three-phase alternating-current supply protection against electric shock direct and that transformer is connected, it is comprising the primary and secondary winding of three-phase safe controller, it is characterized in that the three-phase primary windings tail end be connected for behind the neutral line with input indicator D ₁, D ₂, D ₃Connect A, B, C three-phase 380V AC power and the input indicator D of three-phase primary windings head end three statures and transformer output ₁, D ₂, D ₃Connect, voltmeter V1, V2 are connected across respectively between the two-phase of three-phase primary windings head end; The neutral line of transformer is connected with the neutral line of safety governor; The elementary neutral line of safety governor is connected through lightning arrester with the secondary neutral line; The end of safety governor secondary winding is drawn the neutral line and C after linking to each other ₁Phase centre tap Z draws to cooperate and is the electric welding circuit; Secondary A ₁Phase winding is through protective tube E ₁With the pontic rectifying block DT in the two-way regulator rectifier circuit ₁, DT ₂, filter capacitor C ₁, C ₂, C ₃, C ₄, regulator block WT ₁, WT ₂Be connected; Bulb D in first via regulator rectifier circuit and the light-operated circuit ₇With the controllable silicon trigger electrode angle of flow resistance R in the non-contact switch circuit ₂₉, R ₃₀, one-way SCR CTK ₁, bidirectional triode thyristor CTS ₁, relay J ₄Connecting terminal connects; One-way SCR CTK in the non-contact switch circuit ₁Be connected with the second road regulator rectifier circuit; Bidirectional triode thyristor CTS ₁One end and secondary winding L ₄Tap 1 connects the other end and output voltage Table V ₃With output indicator D ₄Connect; Biasing resistor R in the second road regulator rectifier circuit and the light-operated circuit ₁, R ₂, R ₃, R ₁₀, photo resistance RO ₁, relay J ₁Pull-in winding, control valve BG ₁, BG ₄, delay capacitor C ₁₃Connect; Biasing resistor R in light-operated circuit and the photoelectricity coupling delay circuit ₁₄, R ₁₅, R ₁₆, R ₂₃, R ₂₄, photoelectrical coupler M ₁, relay J ₄Pull-in winding, control valve BG ₇, BG ₁₀, delay capacitor C ₁₆Connect; Secondary B ₁Phase winding is through protective tube E ₂With the pontic rectifying block DT in the two-way regulator rectifier circuit ₃, DT ₄, filter capacitor C ₅, C ₆, C ₇, C ₈, regulator block WT ₃, WT ₄Be connected; Bulb D in first via regulator rectifier circuit and the light-operated circuit ₈With the thyristor operating angle resistance R in the non-contact switch circuit ₃₁, R ₃₂, one-way SCR CTK ₂, bidirectional triode thyristor CTS ₂, relay J ₄Connecting terminal be connected; One-way SCR CTK ₂One end is connected with the second road regulator rectifier circuit; Bidirectional triode thyristor CTS ₂One end and secondary winding L ₅Tap 1 connects the other end and output voltage Table V ₃, V ₄With output indicator D ₅Connect; Biasing resistor R in the second road regulator rectifier circuit and the light-operated circuit ₄, R ₅, R ₆, R ₁₁, photo resistance RO ₂, relay J ₂Pull-in winding, control valve BG ₂, BG ₅, delay capacitor C ₁₄Connect; Biasing resistor R in light-operated circuit and the photoelectricity coupling delay circuit ₁₇, R ₁₈, R ₁₉, R ₂₅, R ₂₆, photoelectrical coupler M ₂, relay J ₅Pull-in winding, control valve BG ₈, BG ₁₁, delay capacitor C ₁₇Connect; Secondary C ₁Phase winding is through protective tube E ₃With the pontic rectifying block DT in the two-way regulator rectifier circuit ₅, DT ₆, filter capacitor C ₉, C ₁₀, C ₁₁, C ₁₂, regulator block WT ₅, WT ₆Be connected; Bulb D in first via regulator rectifier circuit and the photoelectric control circuit ₉With the thyristor operating angle resistance R in the non-contact circuit switch ₃₃, R ₃₄, one-way SCR CTK ₃, bidirectional triode thyristor CTS ₃, relay J ₅Connecting terminal be connected; One-way SCR CTK ₃One end is connected with the second road regulator rectifier circuit, bidirectional triode thyristor CTS ₃One end and secondary winding L ₆Tap 1 connects the other end and output voltage Table V ₄, output indicator D ₆Connect; Biasing resistor R in the second road regulator rectifier circuit and the light-operated circuit ₇, R ₈, R ₉, R ₁₃, photo resistance RO ₃, relay J ₃Pull-in winding, control valve BG ₃, BG ₆, delay capacitor C ₁₅Connect; Biasing resistor R in light-operated circuit and the photoelectricity coupling delay circuit ₂₀, R ₂₁, R ₂₂, R ₂₇, R ₂₈, photoelectrical coupler M ₃, relay J ₆Pull-in winding, control valve BG ₉, BG ₁₂, delay capacitor C ₁₈Connect.

2, the anti-short circuit no contact energy-saving safety of 380V three-phase alternating-current supply protection against electric shock according to claim 1, the number of turn and the sectional area of wire of the primary and secondary winding of three-phase that it is characterized in that safety governor is identical, mutually insulated is fixed on three iron core column of shell type core.

3, the anti-short circuit no contact energy-saving safety of 380V AC power protection against electric shock according to claim 1, the neutral line that it is characterized in that the elementary winding of safety governor is to be connected with the transformer neutral line, belong to ground state, and the neutral line of secondary winding is directly exported, have no related with elementary winding, iron core and the earth, belong to state of insulation, so not only energy-conservation but also safety.

4, the anti-short circuit no contact energy-saving safety of 380V three-phase alternating-current supply protection against electric shock according to claim 1, it is characterized in that noncontacting switch is made up of an one-way SCR and a bidirectional triode thyristor, great power bidirectional silicon controlled trigger voltage is the positive 12V DC power supply that is provided from the second road regulator rectifier circuit by small-power one-way SCR serial connection power resistor, and the trigger electrode voltage of one-way SCR is provided from first via regulator rectifier circuit by relay contact polyphone thyristor operating angle resistance.

5, the anti-short circuit no contact energy-saving safety of 380V three-phase alternating-current supply protection against electric shock according to claim 1, it is characterized in that the Push And Release of bidirectional triode thyristor after the short circuit is the trigger electrode voltage control by the control of the photoelectric coupler isolation in the photoelectricity coupling circuit, the photoelectrical coupler delay circuit is controlled by light-operated circuit, and the bulb voltage of light-operated circuit is provided by first via regulator rectifier circuit, and the voltage of light-operated circuit is provided by the second road regulator rectifier circuit.

6, the anti-short circuit no contact energy-saving safety of 380V three-phase alternating-current supply protection against electric shock according to claim 1 is characterized in that the electric welding outlet line is by drawing in the secondary winding tap.

7, the anti-short circuit no contact energy-saving safety of 380V three-phase alternating-current supply protection against electric shock according to claim 1 or 5 is characterized in that after the short circuit that the key of powered-down rapidly is bulb and the photo resistance in the electrical control circuit.

8, the anti-short circuit no contact energy-saving safety of 380V three-phase alternating-current supply protection against electric shock according to claim 1 is characterized in that lightning arrester is installed between the primary and secondary neutral line, has thunderstorm hour to go into ground by lightning arrester to elementary neutral line discharge.

9, the anti-short circuit no contact energy-saving safety of 380V three-phase alternating-current supply protection against electric shock according to claim 1, the open and close time that it is characterized in that noncontacting switch is to be finished by the base stage operating voltage that light-operated circuit and photoelectricity coupling delay circuit control valve are controlled in the charging of electric capacity, discharge.