CN105576611B - A kind of how compatible three-phase electric apparatus open circuit comprehensive protector of low power consumption and low cost - Google Patents
A kind of how compatible three-phase electric apparatus open circuit comprehensive protector of low power consumption and low cost Download PDFInfo
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- CN105576611B CN105576611B CN201610138194.0A CN201610138194A CN105576611B CN 105576611 B CN105576611 B CN 105576611B CN 201610138194 A CN201610138194 A CN 201610138194A CN 105576611 B CN105576611 B CN 105576611B
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02H—EMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS
- H02H7/00—Emergency protective circuit arrangements specially adapted for specific types of electric machines or apparatus or for sectionalised protection of cable or line systems, and effecting automatic switching in the event of an undesired change from normal working conditions
- H02H7/08—Emergency protective circuit arrangements specially adapted for specific types of electric machines or apparatus or for sectionalised protection of cable or line systems, and effecting automatic switching in the event of an undesired change from normal working conditions for dynamo-electric motors
- H02H7/0805—Emergency protective circuit arrangements specially adapted for specific types of electric machines or apparatus or for sectionalised protection of cable or line systems, and effecting automatic switching in the event of an undesired change from normal working conditions for dynamo-electric motors for synchronous motors
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02H—EMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS
- H02H7/00—Emergency protective circuit arrangements specially adapted for specific types of electric machines or apparatus or for sectionalised protection of cable or line systems, and effecting automatic switching in the event of an undesired change from normal working conditions
- H02H7/08—Emergency protective circuit arrangements specially adapted for specific types of electric machines or apparatus or for sectionalised protection of cable or line systems, and effecting automatic switching in the event of an undesired change from normal working conditions for dynamo-electric motors
- H02H7/09—Emergency protective circuit arrangements specially adapted for specific types of electric machines or apparatus or for sectionalised protection of cable or line systems, and effecting automatic switching in the event of an undesired change from normal working conditions for dynamo-electric motors against over-voltage; against reduction of voltage; against phase interruption
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Abstract
The present invention discloses a kind of how compatible three-phase electric apparatus open circuit comprehensive protector of low power consumption and low cost; include magnet coil trip switch assembly unit; electric current phase shortage sensitive switch unit; electric current phase shortage is turned on and off selecting unit; voltage phase shortage sensitive switch unit; phase shortage Time-delayed trigger unit; extraneous signal inputs control unit; electric leakage sensing and thresholding trigger element; leakage trigger preferred power supply unit, leak(age) test unit, ultra-voltage trigger element; three-phase or single-phase rectifier unit, electronic switch, which is triggered, turns on delay unit.This product small volume, cost is low, and using small power consumption, compatibility is strong, suitable for the excessively stream of threephase asynchronous and common three-phase electric apparatus, electric leakage, superpressure, under-voltage, Current Voltage phase shortage（Common three-phase electric apparatus use can close without electric current phase shortage function）, extraneous signal control dropout open circuit protection.
Description
Technical field
The present invention relates to the running protection of threephase asynchronous and three-phase electric apparatus protection art, one kind is referred in particular to
The how compatible three-phase electric apparatus open circuit comprehensive protector of low power consumption and low cost.
Background technology
Threephase asynchronous model specification is a lot, and what it is using face is extensively well-known.Because it is that electric energy is converted into revolving
Turn the electrical appliance of mechanical energy, it is necessary to have the connection of power transmission line, unavoidable mechanical oscillation；And transmission pressure, switch, contactor,
Binding post etc. is transmitted electricity joint portion, by reasons, also motor mechanical oscillation in itself and guarantor such as the humidity of nature, oxidation, dirt dyes
Dangerous silk matches the factor such as improper, causes single line fracture to produce and lacks a phase current operational failure, people are called electric current phase shortage；Also
Have a kind of situation be motor it is near around without lead loop cracking phenomena is produced, three-phase current loop is normal, but because long-range or
More remotely there are phase power supply open circuit or the change of wire contacts resistance to cause motor phase failure to go on a long journey greatly, now there is electricity in motor three-phase loop
Stream, simply electric current is too uneven, and voltage step is larger, and people are called voltage phase shortage；Either voltage phase shortage, or electric current lack
Phase, the load major part of motor are added in the acting on single phase winding, and rotating speed successively decreases in several seconds that phase shortage starts, due to rotating speed
Reactance caused by slack-off is smaller, and electric current increases, and triggers motor excessive heating to burn out winding and damage；People in order to protect motor,
Unnecessary economic loss is avoided, usually gives motor power input, plus excessively stream, electric leakage, open-phase protection measure；Current mistake
Stream, electric leakage protection technology have basically reached the ideal standard that micro energy lose waits for protection, but also undesirable in terms of phase shortage, are not protections
It is incomplete, it is exactly more using single-piece, volume is too big, and cost is high, and open-phase protection operation power consumption is too big, at least more than 20W.
The content of the invention
In view of this, the present invention in view of the existing deficiencies of the prior art, its main purpose be to provide a kind of low-power consumption it is low into
This how compatible three-phase electric apparatus open circuit comprehensive protector, it is not to protect not entirely, just that it, which can effectively solve existing phase-lacking protective device,
It is more using single-piece, volume is too big, and cost is high, and open-phase protection operation power consumption is too big, with excessively stream, electric leakage, superpressure, Qi Taxin
Breath control it is compatible bad the problem of.
To achieve the above object, the present invention is using following technical scheme：
A kind of how compatible three-phase electric apparatus open circuit comprehensive protector of low power consumption and low cost, includes AC power input wires
Post INN, AC power lead-in clamp INA, AC power lead-in clamp INB, AC power lead-in clamp INC, dropout
Switch KA, trip switch KB, trip switch KC, tripping coil LA, tripping coil LB, tripping coil LC and tripping coil LT, take off
Detain connecting rod TA, trip link TB, trip link TC and trip link T, electric leakage induction coil BO, electric current phase shortage induction coil LGA,
Electric current phase shortage induction coil LGB, electric current phase shortage induction coil LGC, electric current phase shortage inductive switch LGKA, electric current phase shortage inductive switch
LGKB, electric current phase shortage inductive switch LGKC, device output wiring terminal OUTN, device output wiring terminal OUTA, device output connection
Post OUTB, device output wiring terminal OUTC, leak(age) test switch AN, leak(age) test current-limiting resistance RN, positive temperature coefficient resistance RA,
Positive temperature coefficient resistance RB, positive temperature coefficient resistance RC, resistance R1, resistance R2, resistance R3, resistance R4, resistance R5, resistance R6, resistance
R7, resistance R8, resistance R9, resistance R10, resistance R11, resistance R12, resistance R13, resistance R14, electric capacity C1, electric capacity C2, electric capacity
C3, electric capacity C4, electric capacity C5, electric capacity C6, electric capacity C7, electric capacity C8, electric capacity C9, electric capacity C10, electric capacity C11, electric capacity C12, electric capacity C13,
Electric capacity C14, diode D1, diode D2, diode D3, diode D4, diode D5, diode D6, diode D7, diode
D8, diode D9, diode D10, photoelectric coupling electronics amplification integrated block IC A, photoelectric coupling electronics amplification integrated block IC B, light
Be electrically coupled electronics amplification integrated block IC C, two triggering pipe B1, two triggering pipe B2, two triggering pipe B3, triggering pipe B4, three triggering pipe B5,
Voltage-stabiliser tube W1, voltage-stabiliser tube W2, voltage-stabiliser tube W3, controllable silicon CR, midget relay DJ, FET 4N90；
AC power lead-in clamp INN directly passes through electric leakage induction coil BO to device output wiring terminal by lead
OUTN；AC power lead-in clamp INA connection trip switch KA front ends, before trip switch KA rear ends connect tripping coil LA
End, tripping coil LA rear ends connecting wire pass through electric leakage induction coil BO to electric current phase shortage inductive switch coil LGA front ends, electric current
End connection device output wiring terminal OUTA after phase shortage inductive switch coil LGA；The INB connection dropouts of AC power lead-in clamp are opened
KB front ends are closed, trip switch KB rear ends connection tripping coil LB front ends, tripping coil LB rear end connecting wires should through leakage inductance
Coil BO to electric current phase shortage inductive switch coil LGB front ends, after electric current phase shortage inductive switch coil LGB end connection device output connect
Terminal OUTB；AC power lead-in clamp INC connection trip switch KC front ends, trip switch KC rear ends connection tripping coil LC
Front end, tripping coil LC rear ends connecting wire are electric through electric leakage induction coil BO to electric current phase shortage inductive switch coil LGC front ends
End connection device output wiring terminal OUTC after stream phase shortage inductive switch coil LGC；Electric current phase shortage inductive switch LGKA, electric current phase shortage
After inductive switch LGKB, electric current phase shortage inductive switch LGKC are in parallel with electric capacity C1, electric capacity C2, electric capacity C3 respectively, arbitrarily by electric current
Phase shortage inductive switch LGKA, electric current phase shortage inductive switch LGKB, electric current phase shortage inductive switch LGKC are together in series to form two ends,
In this both ends parallel connection after electric current phase shortage selecting switch XK, one end connection mainboard voltage phase shortage sensitive switch output end XI is another
On end connection motherboard power supply negative terminal BG lines；The end connection device output wiring terminal OUTB of leak(age) test button AN mono-, leak(age) test are pressed
Button AN other ends connection leak(age) test current-limiting resistance RN one end, the leak(age) test current-limiting resistance RN other ends are connected to tripping coil LC
Rear end；Device mainboard three phase mains wiring point ZA, ZB, ZC connect electric current phase shortage induction coil LGA, LGB, LGC front ends respectively, again
Connect positive temperature coefficient resistance RA, RB, RC one end respectively, positive temperature coefficient resistance RA, RB, RC other end connect respectively diode D4,
Three-phase commutation bridge ac input end CA, CB, CC of D5, D6, D7, D8, D9 composition, three-phase commutation bridge positive voltage output end connection electricity
Site BA, its negative voltage output end connection potential point BG；
Since phase A roads voltage phase shortage inductive switch primary side connect diode D1 anode exchanging point CA, diode D1's
Negative terminal connection resistance R1 one end, resistance R1 other ends connection electric capacity C7 one end, the electric capacity C7 other ends are in parallel with the resistance R4 other ends
It is connected with exchange point CB, resistance R4 one end is connected with two triggering pipe B1 of the concatenation other end, and the one of two triggering pipe B1 of concatenation
End is connected with the negative terminal of the light emitting diode of photoelectric coupling electronics amplification integrated block IC A primary sides, and the amplification of photoelectric coupling electronics is integrated
The anode connection resistance R1 other ends of the light emitting diode of block ICA primary sides, and be connected with electric capacity C7 one end；
Since phase B roads voltage phase shortage inductive switch primary side connect diode D2 anode exchanging point CB, diode D2's
Negative terminal connection resistance R2 one end, resistance R2 other ends connection electric capacity C8 one end, the electric capacity C8 other ends are in parallel with the resistance R5 other ends
It is connected with exchange point CC, resistance R5 one end is connected with two triggering pipe B2 of the concatenation other end, and the one of two triggering pipe B2 of concatenation
End is connected with the negative terminal of the light emitting diode of photoelectric coupling electronics amplification integrated block IC B primary sides, and the amplification of photoelectric coupling electronics is integrated
The anode connection resistance R2 other ends of the light emitting diode of block ICB primary sides, and be connected with electric capacity C8 one end；
Since phase C roads voltage phase shortage inductive switch primary side connect diode D3 anode exchanging point CC, diode D3's
Negative terminal connection resistance R3 one end, resistance R3 other ends connection electric capacity C9 one end, the electric capacity C9 other ends are in parallel with the resistance R6 other ends
It is connected with exchange point CA, resistance R6 one end is connected with two triggering pipe B3 of the concatenation other end, and the one of two triggering pipe B3 of concatenation
End is connected with the negative terminal of the light emitting diode of photoelectric coupling electronics amplification integrated block IC C primary sides, and the amplification of photoelectric coupling electronics is integrated
The anode connection resistance R3 other ends of the light emitting diode of block ICC primary sides, and be connected with electric capacity C9 one end；
The mutually annular series connection of tri- phase A, phase B, phase C symmetrical voltage phase shortage inductive switch primary sides, starting point is respectively with exchanging
Electrical voltage point CA, CB, CC are connected, and form phase of three-phase voltage inductive switch primary side loop；The amplification of photoelectric coupling electronics is integrated
Block ICA secondary collector and emitter, photoelectric coupling electronics amplification integrated block IC B secondary collector and emitter, photoelectricity
Couple electronic amplification integrated block IC C secondary collector and emitter upper electric capacity C4 in parallel, electric capacity C5, electric capacity C6 and successively respectively
Comply with the sense of current and connect into closed loop circuit, a point is arbitrarily disconnected in three points, forms a collection
Electrode input and another emitter stage output end, colelctor electrode input connection voltage-stabiliser tube W1 negative terminal, emitter stage output end XI
Connect electric current phase shortage sensitive switch LGKA one end, tripping coil LT one end connection diode D10 negative electrode, motherboard power supply positive pole
BA, three concatenations triggering pipe B5 one end, tripping coil LT other ends connection diode D10 anode, resistance R7 one end,
FET 4N90 drain electrode, resistance R7 other end connection triggering pipe B4 one end, controllable silicon CR anode, relay DJ it
Normally opened contact DJK one end, electric capacity C10 one end, resistance R8 one end, voltage-stabiliser tube W1 power end, the electric capacity C10 other end
Connected with the resistance R8 other end on power supply BG lines, relay DJ normally opened contact DJK other end connection trigger signal is converged
On point BH, the connection of relay DJ coils both ends mainboard external control signal input wires point JI, JO, the triggering pipe B4 other end,
The resistance R9 other end, controllable silicon CR negative electrode, the resistance R14 other end, electric capacity C14 the other end and resistance R10 one end
Meet on trigger signal point BH；Resistance R9 one end connects the three triggering pipe the being serially connected B5 other end, electricity
Hold the C14 one end connection resistance R13 other end and controllable silicon CR control pole, resistance R13 one end connection resistance R12's is another
One end and electric capacity C13 one end, resistance R12 one end connection voltage-stabiliser tube W3 negative electrode, electric capacity C12 one end and electric leakage induction coil
B0 access point RI, voltage-stabiliser tube W3 anode meet at leakage inductance with resistance R14 one end with electric capacity C12, the electric capacity C13 other ends should
Coil access point RG, resistance the R10 other end connection FET 4N90 grid, voltage-stabiliser tube W2 negative electrode, electric capacity C11 one end
With resistance R11 one end, FET 4N90 source electrode, voltage-stabiliser tube W2 anode, the electric capacity C11 other end and resistance R11
The other end is met on power supply BG lines.
As a kind of preferred scheme, the electric capacity C1, electric capacity C2, electric capacity C3, electric capacity C4, electric capacity C5, electric capacity C6 are slow
Rush electric capacity.
As a kind of preferred scheme, the positive temperature coefficient resistance RA, positive temperature coefficient resistance RB, positive temperature coefficient resistance RC are
Mainboard internal fault is protected and self-shield sample resistance.
As a kind of preferred scheme, the resistance R7 is mainboard to electric leakage, phase shortage, under-voltage, the setting of outer control function electricity
Ource electric current limiting resistance.
As a kind of preferred scheme, the triggering pipe B4 is default phase signal or under-voltage signal delay and running triggering pipe, is worked
Value selection 90V.
As a kind of preferred scheme, the electric capacity C10 is integration energy storage delay capacitor.
As a kind of preferred scheme, the resistance R8 is time-delay reset resistance.
As a kind of preferred scheme, the triggering pipe B5 is 240V high pressures triggering pipe.
As a kind of preferred scheme, the resistance R9 and resistance R10 are current-limiting resistance.
As a kind of preferred scheme, the diode D10 is weakening diode.
The present invention has clear advantage and beneficial effect compared with prior art, specifically, by above-mentioned technical proposal
Understand：
The present invention uses the power on the electromagnetic property of coil and micro- magnetic on state characteristic of tongue tube, directly that quantitative change scope is very big
Current course be converted into the break-make both sexes of Push And Release, make electric current inductive switch unit；Applied voltage gating triggering negative resistance
The high pressure triggering pipe of on state characteristic makes voltage induced switch element with rectifying tube, resistance, electric capacity, optocoupler components；By three
In individual electric current inductive switch unit and three voltage induced switch elements implantation three-phase circuits, form six with electrical characteristics open with
The low current switch of pass, they are complied with the sense of current and is together in series；A default phase signal master switch is formd, but due to them
It is operated in the out of phase of three-phase alternating current, their break-makes are that each switch is handed over not on same timing node
Become switch motion, be but difficult to electric current by for this in each small switch ends appropriate electric capacity in parallel of series connection
Device, allow switching current in vortex roller by foring pulsation default phase signal current path, the electric current that it can pass through is milliampere
Level, in order to adapt to this low current switch as switch control work, the present invention using voltage driving electronic switching element it
FET, by the use of source current as secondary signal source, takes voltage segmented mode to produce electric leakage as master control output element
With outer control and the secondary drive signal of phase shortage and under-voltage grade, the total output of point driving is formed with ultra-voltage trigger signal, is adopted
The preferred power supply for producing electric leakage and extraneous signal control function is sealed in open-phase protection signal code loop with voltage-stabiliser tube, is formd
One source multipurpose feature of the present apparatus, and the source current of present apparatus electric leakage phase shortage outer control etc. passes through resistance R7 current limlitings, electricity
Resistance R7 value takes 22M Ω energy reliably workings, it is seen that when 380V alternating current circuits are applied, the electric current that resistance R7 passes through is the present apparatus
Microampere pole, the wastage in bulk or weight of resistance R7 and thereafter circuit be within 0.03W, plus voltage phase shortage inductive switch current-limiting resistance R1=
R2=R3 values take 3.3M Ω, and in 0.1W or so, superpressure draws triggers circuit consumption 0.005W for consumption estimation, and the present apparatus removes switch contact
The outer estimation total power consumption of consumption is at most also not above 0.15W, in addition at three ends of electric current phase shortage inductive switch series connection group two
And a upper microswitch, the open and close of function of current phase-loss protection are realized, after closing function of current phase-loss protection, this
Device can be used for excessively stream, electric leakage, superpressure, voltage phase shortage and the protection of extraneous signal control of common three-phase electric apparatus to use, in addition
Caused backward voltage, which has, after overpressure protection function disconnects to three-phase absorbs protective effect；It is described before comprehensive, this product small volume,
Cost is low, and using small power consumption, compatibility is strong, suitable for the excessively stream of threephase asynchronous and common three-phase electric apparatus, electric leakage, surpasses
Pressure, under-voltage, Current Voltage phase shortage（Common three-phase electric apparatus use can close without electric current phase shortage function）, extraneous signal control it is de-
Detain open circuit protection.
More clearly to illustrate the architectural feature and effect of the present invention, come below in conjunction with the accompanying drawings with specific embodiment to this hair
It is bright to be described in detail.
Brief description of the drawings
Fig. 1 is the structural representation of the preferred embodiment of the utility model；
Fig. 2 be the utility model preferred embodiment in electric current phase shortage sensitive switch circuit enlarged diagram；
Fig. 3 be the utility model preferred embodiment in voltage phase shortage sensitive switch circuit enlarged diagram.
Embodiment
It refer to shown in Fig. 1 to Fig. 3, that show the concrete structure of the preferred embodiments of the invention, includes exchange
Power input binding post INN, AC power lead-in clamp INA, AC power lead-in clamp INB, AC power input connect
Terminal INC, trip switch KA, trip switch KB, trip switch KC, tripping coil LA, tripping coil LB, tripping coil LC and de-
Fastening wire circle LT, trip link TA, trip link TB, trip link TC and trip link T, electric leakage induction coil BO, electric current phase shortage
Induction coil LGA, electric current phase shortage induction coil LGB, electric current phase shortage induction coil LGC, electric current phase shortage inductive switch LGKA, electric current
Phase shortage inductive switch LGKB, electric current phase shortage inductive switch LGKC, device output wiring terminal OUTN, device output wiring terminal OUTA,
Device output wiring terminal OUTB, device output wiring terminal OUTC, leak(age) test switch AN, leak(age) test current-limiting resistance RN, just
Warm coefficient resistance RA, positive temperature coefficient resistance RB, positive temperature coefficient resistance RC, resistance R1, resistance R2, resistance R3, resistance R4, resistance
R5, resistance R6, resistance R7, resistance R8, resistance R9, resistance R10, resistance R11, resistance R12, resistance R13, resistance R14, electric capacity
C1, electric capacity C2, electric capacity C3, electric capacity C4, electric capacity C5, electric capacity C6, electric capacity C7, electric capacity C8, electric capacity C9, electric capacity C10, electric capacity C11, electricity
Hold C12, electric capacity C13, electric capacity C14, diode D1, diode D2, diode D3, diode D4, diode D5, diode D6,
Diode D7, diode D8, diode D9, diode D10, photoelectric coupling electronics amplification integrated block IC A, photoelectric coupling electronics
Amplification integrated block IC B, photoelectric coupling electronics amplification integrated block IC C, two triggering pipe B1, two triggering pipe B2, two triggering pipe B3, triggering
Pipe B4, three triggering pipe B5, voltage-stabiliser tube W1, voltage-stabiliser tube W2, voltage-stabiliser tube W3, controllable silicon CR, midget relay DJ, FET
4N90。
AC power lead-in clamp INN directly passes through electric leakage induction coil BO to device output wiring terminal by lead
OUTN；AC power lead-in clamp INA connection trip switch KA front ends, before trip switch KA rear ends connect tripping coil LA
End, tripping coil LA rear ends connecting wire pass through electric leakage induction coil BO to electric current phase shortage inductive switch coil LGA front ends, electric current
End connection device output wiring terminal OUTA after phase shortage inductive switch coil LGA；The INB connection dropouts of AC power lead-in clamp are opened
KB front ends are closed, trip switch KB rear ends connection tripping coil LB front ends, tripping coil LB rear end connecting wires should through leakage inductance
Coil BO to electric current phase shortage inductive switch coil LGB front ends, after electric current phase shortage inductive switch coil LGB end connection device output connect
Terminal OUTB；AC power lead-in clamp INC connection trip switch KC front ends, trip switch KC rear ends connection tripping coil LC
Front end, tripping coil LC rear ends connecting wire are electric through electric leakage induction coil BO to electric current phase shortage inductive switch coil LGC front ends
End connection device output wiring terminal OUTC after stream phase shortage inductive switch coil LGC；Electric current phase shortage inductive switch LGKA, electric current phase shortage
After inductive switch LGKB, electric current phase shortage inductive switch LGKC are in parallel with electric capacity C1, electric capacity C2, electric capacity C3 respectively, arbitrarily by electric current
Phase shortage inductive switch LGKA, electric current phase shortage inductive switch LGKB, electric current phase shortage inductive switch LGKC are together in series to form two ends,
In this both ends parallel connection after electric current phase shortage selecting switch XK, one end connection mainboard voltage phase shortage sensitive switch output end XI is another
On end connection motherboard power supply negative terminal BG lines；The end connection device output wiring terminal OUTB of leak(age) test button AN mono-, leak(age) test are pressed
Button AN other ends connection leak(age) test current-limiting resistance RN one end, the leak(age) test current-limiting resistance RN other ends are connected to tripping coil LC
Rear end；Device mainboard three phase mains wiring point ZA, ZB, ZC connect electric current phase shortage induction coil LGA, LGB, LGC front ends respectively, again
Connect positive temperature coefficient resistance RA, RB, RC one end respectively, positive temperature coefficient resistance RA, RB, RC other end connect respectively diode D4,
Three-phase commutation bridge ac input end CA, CB, CC of D5, D6, D7, D8, D9 composition, three-phase commutation bridge positive voltage output end connection electricity
Site BA, its negative voltage output end connection potential point BG.
Since phase A roads voltage phase shortage inductive switch primary side connect diode D1 anode exchanging point CA, diode D1's
Negative terminal connection resistance R1 one end, resistance R1 other ends connection electric capacity C7 one end, the electric capacity C7 other ends are in parallel with the resistance R4 other ends
It is connected with exchange point CB, resistance R4 one end is connected with two triggering pipe B1 of the concatenation other end, and the one of two triggering pipe B1 of concatenation
End is connected with the negative terminal of the light emitting diode of photoelectric coupling electronics amplification integrated block IC A primary sides, and the amplification of photoelectric coupling electronics is integrated
The anode connection resistance R1 other ends of the light emitting diode of block ICA primary sides, and be connected with electric capacity C7 one end.
Since phase B roads voltage phase shortage inductive switch primary side connect diode D2 anode exchanging point CB, diode D2's
Negative terminal connection resistance R2 one end, resistance R2 other ends connection electric capacity C8 one end, the electric capacity C8 other ends are in parallel with the resistance R5 other ends
It is connected with exchange point CC, resistance R5 one end is connected with two triggering pipe B2 of the concatenation other end, and the one of two triggering pipe B2 of concatenation
End is connected with the negative terminal of the light emitting diode of photoelectric coupling electronics amplification integrated block IC B primary sides, and the amplification of photoelectric coupling electronics is integrated
The anode connection resistance R2 other ends of the light emitting diode of block ICB primary sides, and be connected with electric capacity C8 one end.
Since phase C roads voltage phase shortage inductive switch primary side connect diode D3 anode exchanging point CC, diode D3's
Negative terminal connection resistance R3 one end, resistance R3 other ends connection electric capacity C9 one end, the electric capacity C9 other ends are in parallel with the resistance R6 other ends
It is connected with exchange point CA, resistance R6 one end is connected with two triggering pipe B3 of the concatenation other end, and the one of two triggering pipe B3 of concatenation
End is connected with the negative terminal of the light emitting diode of photoelectric coupling electronics amplification integrated block IC C primary sides, and the amplification of photoelectric coupling electronics is integrated
The anode connection resistance R3 other ends of the light emitting diode of block ICC primary sides, and be connected with electric capacity C9 one end.
The mutually annular series connection of tri- phase A, phase B, phase C symmetrical voltage phase shortage inductive switch primary sides, starting point is respectively with exchanging
Electrical voltage point CA, CB, CC are connected, and form phase of three-phase voltage inductive switch primary side loop；The amplification of photoelectric coupling electronics is integrated
Block ICA secondary collector and emitter, photoelectric coupling electronics amplification integrated block IC B secondary collector and emitter, photoelectricity
Couple electronic amplification integrated block IC C secondary collector and emitter upper electric capacity C4 in parallel, electric capacity C5, electric capacity C6 and successively respectively
Comply with the sense of current and connect into closed loop circuit, a point is arbitrarily disconnected in three points, forms a collection
Electrode input and another emitter stage output end, colelctor electrode input connection voltage-stabiliser tube W1 negative terminal, emitter stage output end XI
Connect electric current phase shortage sensitive switch LGKA one end, tripping coil LT one end connection diode D10 negative electrode, motherboard power supply positive pole
BA, three concatenations triggering pipe B5 one end, tripping coil LT other ends connection diode D10 anode, resistance R7 one end,
FET 4N90 drain electrode, resistance R7 other end connection triggering pipe B4 one end, controllable silicon CR anode, relay DJ it
Normally opened contact DJK one end, electric capacity C10 one end, resistance R8 one end, voltage-stabiliser tube W1 power end, the electric capacity C10 other end
Connected with the resistance R8 other end on power supply BG lines, relay DJ normally opened contact DJK other end connection trigger signal is converged
On point BH, the connection of relay DJ coils both ends mainboard external control signal input wires point JI, JO, the triggering pipe B4 other end,
The resistance R9 other end, controllable silicon CR negative electrode, the resistance R14 other end, electric capacity C14 the other end and resistance R10 one end
Meet on trigger signal point BH；Resistance R9 one end connects the three triggering pipe the being serially connected B5 other end, electricity
Hold the C14 one end connection resistance R13 other end and controllable silicon CR control pole, resistance R13 one end connection resistance R12's is another
One end and electric capacity C13 one end, resistance R12 one end connection voltage-stabiliser tube W3 negative electrode, electric capacity C12 one end and electric leakage induction coil
B0 access point RI, voltage-stabiliser tube W3 anode meet at leakage inductance with resistance R14 one end with electric capacity C12, the electric capacity C13 other ends should
Coil access point RG, resistance the R10 other end connection FET 4N90 grid, voltage-stabiliser tube W2 negative electrode, electric capacity C11 one end
With resistance R11 one end, FET 4N90 source electrode, voltage-stabiliser tube W2 anode, the electric capacity C11 other end and resistance R11
The other end is met on power supply BG lines.
In the present embodiment, electric current phase shortage sensitive switch is by taking phase A as an example, electric current phase shortage induction coil LGA/ electric current phase shortage senses
Inductive switch LGKA is the short cylinder of plastics with diameter 12MM, is enclosed around upper enamel-covered wire 11 thick enough, using the normally opened of high sensitive magnetic
Contact tongue tube connects lead, carries out and inserts in the coil hole wound after insulation, as long as coil current phase shortage induction coil
Electric current just closes connection in more than 0.6A, tongue tube normally opened contact in LGA；Voltage phase shortage inductive switch is by taking phase A as an example, using two
210V high pressures triggering pipe connects to form the rectification of a 420V voltages gating element and diode D1, utilizes photoelectric coupling electronics
Amplification integrated block IC A electric light is electrically isolated amplification characteristic, is that 3.3M Ω make current limliting with resistance R1 values, resistance R4 makees triggering buffering limit
Stream, makees integration energy storage with electric capacity C7, makees current buffering with electric capacity C4, when two triggering pipe B1 both end voltages of series connection are more than 420V
（Equivalent to alternating voltage 300V）Conducting, primary side light-emitting diodes of the electric current road through the sub- amplification integrated block IC A of photoelectric coupling after conducting
Manage and light, cause the phototriode of the sub- amplification integrated block IC A secondary of photoelectric coupling to turn on；Three parts are made after this manner symmetrically
Voltage gates photoelectric coupling electronic switch and three parts of symmetrical electric current gating electromagnetic induction switch, and they are complied with into sense of current string
Both ends, and the capacitor same to six relatively independent electric drive switch in parallel are formed after connection, this is gone here and there through them on electric current road
During connection group, because each switch motion timing node is different, vortex roller is presented by as long as having a switch not in electric current
Logical, current path is just cut off；Resistance R7 is that mainboard is limited electric leakage, phase shortage, under-voltage, the setting of outer control function source current
Resistance, value select 22M Ω resistance, and it is about 30uA by electric current, that is, meets the integration needs of triggers circuit, meet phase shortage biography again
Feel the low current condition of work of switches set；Electric capacity C7 is storage capacitor；Voltage-stabiliser tube W1 be establish electric leakage with outer control trigger it is excellent
First power supply, it is 36V from voltage stabilizing value, ensures the power supply needs of electric leakage and outer control triggering at any time；Relay DJ is outer letter
Number control input and buffer action；Resistance R8 is time-delay reset resistance, and value selects 44M Ω；One-way SCR CR is to be touched by electric leakage
Generating sub switch, produce secondary driving current of leaking electricity；Electric capacity C12, electric capacity C13, electric capacity C14, resistance R12, resistance R13, resistance
The circuit that R14 and voltage-stabiliser tube W3 are formed is electric leakage signal input threshold and Anti-Jamming；Trigger pipe B4 be default phase signal or
Under-voltage signal delay and running triggering pipe, working value selection 90V；Three triggering pipe B5 are that ultra-voltage draws trigger action, with three
240V high pressures triggering pipe connects to form 720V voltage gating characteristics;Resistance R9, resistance R10 are current-limiting resistance;Resistance R11 electric capacity
C11 is stability maintenance time-lag action, ensures the electronic switch normal work that is triggered;Voltage-stabiliser tube W2 is that 20V FETs input pressure limiting guarantor
Shield；FET 4N90 is voltage driving power electronic switch；Diode D10 acts on for weakening；Tripping coil LT is electric leakage, lacked
The comprehensive dropout electromagnetic conversion mechanical energy component such as phase, superpressure, under-voltage, external signal control；Tripping coil LA, tripping coil LB, take off
Fastening wire circle LC is that corresponding phase current excess determines dropout electromagnetic conversion mechanical energy component；Electric leakage induction coil BO is to obtain electrical leakage quantity to be
The effect of signal；Diode D4, diode D5, diode D6, diode D7, diode D8, diode D9 for complete three-phase or
Single-phase rectifier works；Positive temperature coefficient resistor RA, positive temperature coefficient resistor RB, positive temperature coefficient resistor RC are generation self protective function
Resistance.
Three-phase or single-phase is formed by diode D4, diode D5, diode D6, diode D7, diode D8, diode D9
Power rectifier unit；Three phase mains rectification is carried out when three-phase CA, CB, CC terminal voltage is normal, when three-phase CA, CB, CC ends electricity
Be pressed with a phase terminal voltage it is too low when carry out single-phase rectifier.
Quilt is formed by resistance R10, resistance R11 and electric capacity C11 and voltage-stabiliser tube W2 and FET 4N90 and tripping coil LT
Trigger drive control trip unit.When signaling point BH inputs enough driving voltages, electric current is buffered to electric capacity by resistance R10
C11 is charged, and 20V is limited in by voltage-stabiliser tube W2, and by resistance R11 delay electric discharges, while FET 4N90 is driven and led
Logical, power supply BA anodes cross FET 4N90 to power supply negative terminal formation electric current by tripping coil LT, and tripping coil LT is by electric energy
Trip switch deenergization can be driven by being converted into electromagnetic and mechanical, produce protection act.
Ultra-voltage trigger element is formed by three triggering pipe B5 and resistance R9；When power supply BA to BG voltages is more than 720V,
Three triggering pipe B5 are turned on rapidly, and power supply BA crosses resistance R3 to BH through three triggering pipe B5 and produces current signal, makes the drive that is triggered
Dynamic control trip unit completes protection work of threading off.
Sensed by resistance R7 with triggering pipe B4 with electric capacity C10 with voltage-stabiliser tube W1 and its voltage phase shortage connected and electric current phase shortage
Switch series connection group forms phase shortage Time-delayed trigger unit；When electric current in voltage-stabiliser tube W1 is because electric current phase shortage or voltage phase shortage and under-voltage section
When only, constantly electric capacity C7 is charged by resistance R7 electric current, about 3 seconds BC point voltages rise to 90V from 36V+, and triggering pipe B4 is touched
Send out and turn on, make the drive control trip unit completion dropout protection work that is triggered.
By controllable silicon CR and electric capacity C12, electric capacity C13, electric capacity C14 and resistance R12, resistance R13, resistance R14 and voltage-stabiliser tube
W3 and electric leakage induction coil BO composition leakage trigger units；When leakage current is equal to or more than setting value, leak electricity induction coil
BO induced-currents pass through by electric capacity C12, electric capacity C13, electric capacity C14 and resistance R12, resistance R13, resistance R14 and voltage-stabiliser tube W3 groups
Into thresholding to controllable silicon CR trigger, electric capacity C10 both ends keep 36V+ electric energy by controllable silicon CR be discharged to BH generation electric current
Signal, make the drive control trip unit completion dropout protection work that is triggered.
Leakage function test unit is formed by leak(age) test switch AN and leak(age) test current-limiting resistance RN；When leak(age) test is opened
When closing AN connections, from trip switch KB to tripping coil LB, rear end lead passes through among electric leakage induction coil BO phase B, and overcurrent lacks
Phase induction coil LGB switchs AN to leak(age) test, crosses leak(age) test current-limiting resistance RN to tripping coil LC and crosses trip switch KC companies
Meet phase C, it is seen that current loop single line is passed through among electric leakage induction coil BO, causes electric leakage induction coil BO alternating magnetic field uneven
Weighing apparatus, induces electric leakage signal, causes creepage protection function circuit to carry out dropout protection act, creepage protection function is detected.
Switch K is connected in parallel on three-phase current phase shortage inductive switch series connection group both ends formation electric current phase shortage and is turned on and off function
Unit；When switching K closures, three-phase current phase shortage inductive switch is short-circuited failure, and when opposite switch K disconnects, switch is considered as mistake
Effect, three-phase current phase shortage inductive switch functional rehabilitation.
Earth leakage protective and extraneous signal control input preferred power supply list are formed by resistance R7 and electric capacity C10 and voltage-stabiliser tube W1
Member；When voltage-stabiliser tube W1 anode taps are equal to 0V to the voltage of power supply BG lines, because voltage-stabiliser tube characteristic maintains the voltage of voltage stabilizing value
36V, remain the triggering power supply of earth leakage protective and extraneous signal control input.
By diode D1, diode D2, diode D3, two triggering pipe B1, two triggering pipe B2, two triggering pipe B3, resistance R1,
Resistance R2, resistance R3, resistance R4, resistance R5, resistance R6, photoelectric coupling electronics amplification integrated block IC A, the amplification of photoelectric coupling electronics
Ic chip B, photoelectric coupling electronics amplification integrated block IC C, electric capacity C4, electric capacity C5, electric capacity C6 composition phase of three-phase voltage sensings
Switch element；When mainboard three-phase alternating current pressure point CA, CB, CC relative alternating voltage are more than 300V to 380V, three-phase voltage
Sensitive switch is triggered conducting because triggering pipe both ends reach DC voltage more than 420V to 540V, and photoelectric coupling electronics, which amplifies, to be integrated
Block primary side diode is accordingly produced burst pulse and led by the short duration current that the cycle is 50 milliseconds to 2 seconds, secondary phototriode
Logical phase, voltage-stabiliser tube W1 series loop currents are pulsed through, BC point voltage pulsations, but are less than 90V, and triggering pipe B4 is remained waiting for；When
When mainboard three-phase alternating current pressure point CA, CB, CC relative alternating voltage are less than 300V, a wherein phase or two-phase voltage is caused to sense
Switch fails triggering and obstructed because triggering pipe both ends do not reach DC voltage 420V, causes photoelectric coupling secondary phototriode to cut
Only, voltage-stabiliser tube W1 series loop currents are zero, BC point voltage climbs to 90V, and the electric energy on electric capacity C10 is by triggering pipe B4 to BH
Trigger current signal is produced, makes the drive control trip unit completion dropout protection work that is triggered.
By electric current phase shortage inductive switch coil LGA, electric current phase shortage inductive switch coil LGB, electric current phase shortage inductive switch line
Enclose LGC, electric current phase shortage electric current sense switch LGKA, electric current phase shortage electric current sense switch LGKB, electric current phase shortage electric current sense switch LGKC, electricity
Hold C1, electric capacity C2, electric capacity C3 and constitute three-phase current phase shortage sensitive switch unit；Electric current phase shortage electric current sense switch LGKA, electric current
Phase shortage electric current sense switch LGKB, electric current phase shortage electric current sense switch LGKC are tongue tube, when three-phase current is all higher than more than 0.6A
When, intermittently closure or long secondary closure, voltage-stabiliser tube W1 series loop currents are pulsed through three-phase tongue tube, BC point voltage pulsations,
But it is less than 90V, triggering pipe B4 is remained waiting for；When any phase current is less than 0.6A in three-phase current phase shortage inductive switch, the phase
Tongue tube will can not be closed and opened a way for a long time, cause voltage-stabiliser tube W1 series loop currents to be zero, BC point voltage climbs, about spend 3 seconds
BC point voltages rise to 90V, and triggering pipe B4 is triggered and turned on, and the electric energy on electric capacity C10 produces electricity by triggering pipe B4 to BH
Signal is flowed, makes the drive control trip unit completion dropout protection work that is triggered.
In the present embodiment, in order to cost-effective, high pressure can be triggered to effective low pressure triggering pipe and replaced：
1st, pipe B4=90V is triggered, series connection offspring uses with three DB3 (low pressure triggering pipe), magnitude of voltage 99V.
2nd, pipe B1*2=B2*2=B3*3=420V is triggered, is replaced with 12 DB3 series connection, magnitude of voltage 396V.
3rd, pipe B5*3=720V is triggered, is replaced with 22 DB3 series connection, magnitude of voltage 726V.
The above described is only a preferred embodiment of the present invention, be not intended to limit the scope of the present invention,
Therefore any subtle modifications, equivalent variations and modifications that every technical spirit according to the present invention is made to above example, still
Belong in the range of technical solution of the present invention.
Claims (10)
- A kind of 1. how compatible three-phase electric apparatus open circuit comprehensive protector of low power consumption and low cost, it is characterised in that：Include alternating current Source lead-in clamp INN, AC power lead-in clamp INA, AC power lead-in clamp INB, AC power input wires Post INC, trip switch KA, trip switch KB, trip switch KC, tripping coil LA, tripping coil LB, tripping coil LC and dropout Coil LT, trip link TA, trip link TB, trip link TC and trip link T, electric leakage induction coil BO, electric current phase shortage sense Coil LGA, electric current phase shortage induction coil LGB, electric current phase shortage induction coil LGC, electric current phase shortage inductive switch LGKA, electric current is answered to lack Phase inductive switch LGKB, electric current phase shortage inductive switch LGKC, device output wiring terminal OUTN, device output wiring terminal OUTA, dress Put output wiring terminal OUTB, device output wiring terminal OUTC, leak(age) test switch AN, leak(age) test current-limiting resistance RN, positive temperature Coefficient resistance RA, positive temperature coefficient resistance RB, positive temperature coefficient resistance RC, resistance R1, resistance R2, resistance R3, resistance R4, resistance R5, Resistance R6, resistance R7, resistance R8, resistance R9, resistance R10, resistance R11, resistance R12, resistance R13, resistance R14, electric capacity C1, electricity Hold C2, electric capacity C3, electric capacity C4, electric capacity C5, electric capacity C6, electric capacity C7, electric capacity C8, electric capacity C9, electric capacity C10, electric capacity C11, electric capacity C12, electric capacity C13, electric capacity C14, diode D1, diode D2, diode D3, diode D4, diode D5, diode D6, two Pole pipe D7, diode D8, diode D9, diode D10, photoelectric coupling electronics amplification integrated block IC A, photoelectric coupling electronics are put Big ic chip B, photoelectric coupling electronics amplification integrated block IC C, two triggering pipe B1, two triggering pipe B2, two triggering pipe B3, triggering pipe B4, three triggering pipe B5, voltage-stabiliser tube W1, voltage-stabiliser tube W2, voltage-stabiliser tube W3, controllable silicon CR, midget relay DJ, FET 4N90；AC power lead-in clamp INN directly passes through electric leakage induction coil BO to device output wiring terminal OUTN by lead； AC power lead-in clamp INA connection trip switch KA front ends, trip switch KA rear ends connection tripping coil LA front ends, thread off Coil LA rear ends connecting wire passes through electric leakage induction coil BO to electric current phase shortage inductive switch coil LGA front ends, electric current phase shortage sense End connection device output wiring terminal OUTA after inductive switch coil LGA；Before AC power lead-in clamp INB connection trip switch KB End, trip switch KB rear ends connection tripping coil LB front ends, tripping coil LB rear ends connecting wire pass through electric leakage induction coil BO To electric current phase shortage inductive switch coil LGB front ends, end connection device output wiring terminal after electric current phase shortage inductive switch coil LGB OUTB；AC power lead-in clamp INC connection trip switch KC front ends, before trip switch KC rear ends connect tripping coil LC End, tripping coil LC rear ends connecting wire pass through electric leakage induction coil BO to electric current phase shortage inductive switch coil LGC front ends, electric current End connection device output wiring terminal OUTC after phase shortage inductive switch coil LGC；Electric current phase shortage inductive switch LGKA, electric current phase shortage sense After inductive switch LGKB, electric current phase shortage inductive switch LGKC are in parallel with electric capacity C1, electric capacity C2, electric capacity C3 respectively, arbitrarily electric current is lacked Phase inductive switch LGKA, electric current phase shortage inductive switch LGKB, electric current phase shortage inductive switch LGKC are together in series to form two ends, After the upper electric current phase shortage selecting switch XK in parallel of this both ends, one end connection mainboard voltage phase shortage sensitive switch output end XI, the other end Connect on motherboard power supply negative terminal BG lines；The end connection device output wiring terminal OUTB of leak(age) test button AN mono-, leak(age) test button AN other ends connection leak(age) test current-limiting resistance RN one end, after the leak(age) test current-limiting resistance RN other ends are connected to tripping coil LC End；Device mainboard three phase mains wiring point ZA, ZB, ZC connect electric current phase shortage induction coil LGA, LGB, LGC front ends respectively, divide again Not Lian Jie positive temperature coefficient resistance RA, RB, RC one end, positive temperature coefficient resistance RA, RB, RC other end connect respectively diode D4, D5, Three-phase commutation bridge ac input end CA, CB, CC of D6, D7, D8, D9 composition, three-phase commutation bridge positive voltage output end connection current potential Point BA, its negative voltage output end connection potential point BG；Since phase A roads voltage phase shortage inductive switch primary side connect diode D1 anode, diode D1 negative terminal exchanging point CA Resistance R1 one end is connected, resistance R1 other ends connection electric capacity C7 one end, the electric capacity C7 other ends are in parallel with the resistance R4 other ends and hand over Flow point CB connections, two triggering pipe B1 of the resistance R4 one end and concatenation other ends be connecteds, the two of concatenation trigger pipe B1 one end and The negative terminal connection of the light emitting diode of photoelectric coupling electronics amplification integrated block IC A primary sides, photoelectric coupling electronics amplification integrated block IC A The anode connection resistance R1 other ends of the light emitting diode of primary side, and be connected with electric capacity C7 one end；Since phase B roads voltage phase shortage inductive switch primary side connect diode D2 anode, diode D2 negative terminal exchanging point CB Resistance R2 one end is connected, resistance R2 other ends connection electric capacity C8 one end, the electric capacity C8 other ends are in parallel with the resistance R5 other ends and hand over Flow point CC connections, two triggering pipe B2 of the resistance R5 one end and concatenation other ends be connecteds, the two of concatenation trigger pipe B2 one end and The negative terminal connection of the light emitting diode of photoelectric coupling electronics amplification integrated block IC B primary sides, photoelectric coupling electronics amplification integrated block IC B The anode connection resistance R2 other ends of the light emitting diode of primary side, and be connected with electric capacity C8 one end；Since phase C roads voltage phase shortage inductive switch primary side connect diode D3 anode, diode D3 negative terminal exchanging point CC Resistance R3 one end is connected, resistance R3 other ends connection electric capacity C9 one end, the electric capacity C9 other ends are in parallel with the resistance R6 other ends and hand over Flow point CA connections, two triggering pipe B3 of the resistance R6 one end and concatenation other ends be connecteds, the two of concatenation trigger pipe B3 one end and The negative terminal connection of the light emitting diode of photoelectric coupling electronics amplification integrated block IC C primary sides, photoelectric coupling electronics amplification integrated block IC C The anode connection resistance R3 other ends of the light emitting diode of primary side, and be connected with electric capacity C9 one end；Tri- phase A, phase B, phase C symmetrical voltage phase shortage inductive switch primary sides mutually annular series connection, starting point respectively with alternating voltage Point CA, CB, CC are connected, and form phase of three-phase voltage inductive switch primary side loop；By photoelectric coupling electronics amplification integrated block IC A Secondary collector and emitter, photoelectric coupling electronics amplification integrated block IC B secondary collector and emitter, photoelectric coupling electricity Sub- amplification integrated block IC C secondary collector and emitter is in parallel respectively to be gone up electric capacity C4, electric capacity C5, electric capacity C6 and complies with electricity successively Stream direction connects into closed loop circuit, and a point is arbitrarily disconnected in three points, it is defeated to form a colelctor electrode Enter end and another emitter stage output end, colelctor electrode input connection voltage-stabiliser tube W1 negative terminal, emitter stage output end XI connections electricity Flow phase shortage sensitive switch LGKA one end, tripping coil LT one end connection diode D10 negative electrode, motherboard power supply positive pole BA, three The triggering pipe B5 of concatenation one end, tripping coil LT other ends connection diode D10 anode, resistance R7 one end, field-effect Pipe 4N90 drain electrode, resistance R7 other end connection triggering pipe B4 one end, controllable silicon CR anode, the normally opened of relay DJ touch Point DJK one end, electric capacity C10 one end, resistance R8 one end, voltage-stabiliser tube W1 power end, electric capacity the C10 other end and resistance On R8 other end connection power supply BG lines, on relay DJ normally opened contact DJK other end connection trigger signal point BH, Relay DJ coils both ends connect mainboard external control signal input wires point JI, JO, the triggering pipe B4 other end, resistance R9 The other end, controllable silicon CR negative electrode, the resistance R14 other end, the electric capacity C14 other end and resistance R10 one end meet at tactile On signalling point BH；The other ends for the triggering pipe B5 that resistance R9 one end connection three is serially connected, the one of electric capacity C14 The end connection resistance R13 other end and controllable silicon CR control pole, resistance R13 one end connection resistance R12 other end and electricity Hold C13 one end, resistance R12 one end connection voltage-stabiliser tube W3 negative electrode, electric capacity C12 one end and electric leakage induction coil B0 access points RI, voltage-stabiliser tube W3 anode meet at electric leakage induction coil access with resistance R14 one end and electric capacity C12, the electric capacity C13 other ends Point RG, resistance the R10 other end connection FET 4N90 grid, voltage-stabiliser tube W2 negative electrode, electric capacity C11 one end and resistance R11 one end, FET 4N90 source electrode, voltage-stabiliser tube W2 anode, the electric capacity C11 other end and resistance the R11 other end Meet on power supply BG lines.
- 2. the how compatible three-phase electric apparatus open circuit comprehensive protector of a kind of low power consumption and low cost according to claim 1, it is special Sign is：The electric capacity C1, electric capacity C2, electric capacity C3, electric capacity C4, electric capacity C5, electric capacity C6 are buffering electric capacity.
- 3. the how compatible three-phase electric apparatus open circuit comprehensive protector of a kind of low power consumption and low cost according to claim 1, it is special Sign is：The positive temperature coefficient resistance RA, positive temperature coefficient resistance RB, positive temperature coefficient resistance RC be mainboard internal fault protection and from Protect sample resistance.
- 4. the how compatible three-phase electric apparatus open circuit comprehensive protector of a kind of low power consumption and low cost according to claim 1, it is special Sign is：The resistance R7 is mainboard to electric leakage, phase shortage, under-voltage, the setting of outer control function source current limiting resistance.
- 5. the how compatible three-phase electric apparatus open circuit comprehensive protector of a kind of low power consumption and low cost according to claim 1, it is special Sign is：The triggering pipe B4 is that default phase signal or under-voltage signal delay and running triggering pipe, working value select 90V.
- 6. the how compatible three-phase electric apparatus open circuit comprehensive protector of a kind of low power consumption and low cost according to claim 1, it is special Sign is：The electric capacity C10 is integration energy storage delay capacitor.
- 7. the how compatible three-phase electric apparatus open circuit comprehensive protector of a kind of low power consumption and low cost according to claim 1, it is special Sign is：The resistance R8 is time-delay reset resistance.
- 8. the how compatible three-phase electric apparatus open circuit comprehensive protector of a kind of low power consumption and low cost according to claim 1, it is special Sign is：The triggering pipe B5 is 240V high pressures triggering pipe.
- 9. the how compatible three-phase electric apparatus open circuit comprehensive protector of a kind of low power consumption and low cost according to claim 1, it is special Sign is：The resistance R9 and resistance R10 are current-limiting resistance.
- 10. the how compatible three-phase electric apparatus open circuit comprehensive protector of a kind of low power consumption and low cost according to claim 1, it is special Sign is：The diode D10 is weakening diode.
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| CN205407228U (en) * | 2016-03-11 | 2016-07-27 | 钟兴明 | How compatible three -phase electrical apparatus of low -power consumption low cost versatile protector that opens circuit |
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| JP2014107999A (en) * | 2012-11-29 | 2014-06-09 | Panasonic Corp | Motor starting device |
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| US5798573A (en) * | 1997-04-01 | 1998-08-25 | Kb Electronics, Inc. | Split power supply |
| CN202373962U (en) * | 2011-12-22 | 2012-08-08 | 韩允丰 | Open-phase protector |
| CN203398761U (en) * | 2013-08-02 | 2014-01-15 | 浙江天正电气股份有限公司 | Integrated protector of motor |
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| CN105576611A (en) | 2016-05-11 |
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