CN105576611A - Low-power-consumption low-cost multi-compatible three-phase electric appliance open-circuit integrated protection device - Google Patents
Low-power-consumption low-cost multi-compatible three-phase electric appliance open-circuit integrated protection device Download PDFInfo
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- CN105576611A CN105576611A CN201610138194.0A CN201610138194A CN105576611A CN 105576611 A CN105576611 A CN 105576611A CN 201610138194 A CN201610138194 A CN 201610138194A CN 105576611 A CN105576611 A CN 105576611A
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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
Abstract
The invention discloses a low-power-consumption low-cost multi-compatible three-phase electric appliance open-circuit integrated protection device comprising an electromagnetic coil release switch component unit, a current phase-deficient sensing switch unit, a current phase-deficient on/off selection unit, a voltage phase-deficient sensing switch unit, a phase-deficient delay trigger unit, an external signal input control unit, an electric leakage sensing and threshold trigger unit, an electric leakage trigger preferred power supply unit, an electric leakage test unit, an overvoltage trigger unit, a three-phase or single-phase rectification unit and an electronic switch triggered conduction delay unit. The low-power-consumption low-cost multi-compatible three-phase electric appliance open-circuit integrated protection device is small in size, low in cost, low in use power consumption, high in compatibility and suitable for overcurrent, electric leakage, overvoltage, under-voltage, current and voltage phase-deficient (use of common three-phase electric appliances does not require the current phase-deficient function and the current phase-deficient function can be closed) and external signal control release open-circuit protection of three-phase asynchronous motors and the common three-phase electric appliances.
Description
Technical field
The running protection and the three-phase electric apparatus that the present invention relates to threephase asynchronous protect art, refer in particular to a kind of low power consumption and low cost how compatible three-phase electric apparatus open circuit comprehensive protector.
Background technology
Threephase asynchronous model specification is a lot, use face be extensively well-known.Because it is the electrical appliance that electric energy converts rotating mechanical energy to, the connection of power transmission line must be had, unavoidable mechanical oscillation; And the transmission of electricity such as transmission pressure, switch, contactor, binding post joint portion, by reasons such as natural humidity, oxidation, dirt dyes, the mechanical oscillation of motor itself and fuse is also had to match the factors such as improper, cause single line to rupture and produce a scarce phase current operational failure, people are called electric current phase shortage; Also have a kind of situation to be that motor is near and all do not produce lead-in wire loop cracking phenomena around, three-phase current loop is normal, but there are a phase power supply open circuit or the change of wire contacts resistance to cause greatly motor phase failure to go on a long journey because of long-range or more long-range, now all there is electric current in motor three-phase loop, just electric current is too uneven, voltage step is comparatively large, and people are called voltage phase shortage; No matter be voltage phase shortage, or electric current phase shortage, the load major part of motor is added in the acting on single phase winding, in several seconds that start in phase shortage, rotating speed successively decreases, because the reactance of the slack-off generation of rotating speed is less, electric current strengthens, and causes motor excessive heating and burns out winding and damage; People, in order to protect motor, avoid unnecessary economic loss, usually give motor power input, add overcurrent, electric leakage, open-phase protection measure; Current overcurrent, electric leakage protection technology reach the ideal standard that Micro Energy Lose waits for protection substantially, but phase shortage aspect is also undesirable, are not to protect entirely, and be exactly that application single-piece is many, volume is too large, and cost is high, and open-phase protection runs power consumption too greatly, more than 20W at least.
Summary of the invention
In view of this; the present invention is directed to the disappearance of prior art existence; its main purpose is to provide a kind of low power consumption and low cost how compatible three-phase electric apparatus open circuit comprehensive protector; its can effectively solve existing phase-lacking protective device be not protect incomplete; be exactly that application single-piece is many, volume is too large, and cost is high; and open-phase protection runs power consumption too greatly, the problem that the compatibility controlled with overcurrent, electric leakage, superpressure, out of Memory is bad.
For achieving the above object, the present invention adopts following technical scheme:
A kind of low power consumption and low cost how compatible three-phase electric apparatus open circuit comprehensive protector, includes AC power lead-in clamp INN, AC power lead-in clamp INA, AC power lead-in clamp INB, AC power lead-in clamp INC, trip switch KA, trip switch KB, trip switch KC, tripping coil LA, tripping coil LB, tripping coil LC and tripping coil 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, 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, photoelectric coupling electronics amplification integrated block IC C, two trigger tube B1, two trigger tube B2, two trigger tube B3, trigger tube B4, three trigger tube B5, voltage-stabiliser tube W1, voltage-stabiliser tube W2, voltage-stabiliser tube W3, controllable silicon CR, midget relay DJ, field effect transistor 4N90,
AC power lead-in clamp INN is directly by going between through electric leakage induction coil BO auto levelizer output wiring terminal OUTN; AC power lead-in clamp INA connects trip switch KA front end, trip switch KA rear end connects tripping coil LA front end, tripping coil LA rear end connects wire through electric leakage induction coil BO to electric current phase shortage inductive switch coil LGA front end, end connection device output wiring terminal OUTA after electric current phase shortage inductive switch coil LGA; AC power lead-in clamp INB connects trip switch KB front end, trip switch KB rear end connects tripping coil LB front end, tripping coil LB rear end connects wire through electric leakage induction coil BO to electric current phase shortage inductive switch coil LGB front end, end connection device output wiring terminal OUTB after electric current phase shortage inductive switch coil LGB; AC power lead-in clamp INC connects trip switch KC front end, trip switch KC rear end connects tripping coil LC front end, tripping coil LC rear end connects wire through electric leakage induction coil BO to electric current phase shortage inductive switch coil LGC front end, end connection device output wiring terminal OUTC after electric current phase shortage inductive switch coil LGC; After electric current phase shortage inductive switch LGKA, electric current phase shortage inductive switch LGKB, electric current phase shortage inductive switch LGKC are in parallel with electric capacity C1, electric capacity C2, electric capacity C3 respectively, be together in series electric current phase shortage inductive switch LGKA, electric current phase shortage inductive switch LGKB, electric current phase shortage inductive switch LGKC arbitrarily formation two end, in this two ends parallel connection after electric current phase shortage selector switch XK, one end connects mainboard voltage phase shortage sensitive switch output XI, and the other end connects on motherboard power supply negative terminal BG line; Leak(age) test button AN mono-end connection device output wiring terminal OUTB, the leak(age) test button AN other end connects leak(age) test current-limiting resistance RN one end, and the leak(age) test current-limiting resistance RN other end is 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 end respectively, connect again positive temperature coefficient resistance RA, RB, RC one end respectively, positive temperature coefficient resistance RA, RB, RC other end connects three-phase commutation bridge ac input end CA, CB, CC of diode D4, D5, D6, D7, D8, D9 composition respectively, three-phase commutation bridge positive voltage output end connects potential point BA, and its negative voltage output connects potential point BG;
The former limit of voltage phase shortage inductive switch, phase A road connects the anode of diode D1 from exchanging some CA, negative terminal contact resistance R1 one end of diode D1, the resistance R1 other end connects electric capacity C7 one end, the electric capacity C7 other end is connected with interchange point CB with the resistance R4 other end is in parallel, resistance R4 one end is connected with the other end of two trigger tube B1 of serial connection, one end of two trigger tube B1 of serial connection is connected with the negative terminal of the light-emitting diode on the former limit of photoelectric coupling electronics amplification integrated block IC A, the anode contact resistance R1 other end of the light-emitting diode on the former limit of photoelectric coupling electronics amplification integrated block IC A, and be connected with electric capacity C7 one end,
The former limit of voltage phase shortage inductive switch, phase B road connects the anode of diode D2 from exchanging some CB, negative terminal contact resistance R2 one end of diode D2, the resistance R2 other end connects electric capacity C8 one end, the electric capacity C8 other end is connected with interchange point CC with the resistance R5 other end is in parallel, resistance R5 one end is connected with the other end of two trigger tube B2 of serial connection, one end of two trigger tube B2 of serial connection is connected with the negative terminal of the light-emitting diode on the former limit of photoelectric coupling electronics amplification integrated block IC B, the anode contact resistance R2 other end of the light-emitting diode on the former limit of photoelectric coupling electronics amplification integrated block IC B, and be connected with electric capacity C8 one end,
The former limit of voltage phase shortage inductive switch, phase C road connects the anode of diode D3 from exchanging some CC, negative terminal contact resistance R3 one end of diode D3, the resistance R3 other end connects electric capacity C9 one end, the electric capacity C9 other end is connected with interchange point CA with the resistance R6 other end is in parallel, resistance R6 one end is connected with the other end of two trigger tube B3 of serial connection, one end of two trigger tube B3 of serial connection is connected with the negative terminal of the light-emitting diode on the former limit of photoelectric coupling electronics amplification integrated block IC C, the anode contact resistance R3 other end of the light-emitting diode on the former limit of photoelectric coupling electronics amplification integrated block IC C, and be connected with electric capacity C9 one end,
The annular series connection mutually of phase A, phase B, phase C tri-former limits of symmetrical voltage phase shortage inductive switch, starting point is connected with alternating current pressure point CA, CB, CC respectively, defines loop, phase of three-phase voltage inductive switch former limit, by the secondary collector and emitter of photoelectric coupling electronics amplification integrated block IC A, the secondary collector and emitter of photoelectric coupling electronics amplification integrated block IC B, the secondary collector and emitter upper electric capacity C4 in parallel respectively of photoelectric coupling electronics amplification integrated block IC C, electric capacity C5, also comply with the sense of current successively connects into closed loop circuit to electric capacity C6, a point is disconnected arbitrarily in three points, define a collector electrode input and another emitter output, collector electrode input connects the negative terminal of voltage-stabiliser tube W1, emitter output XI connects electric current phase shortage sensitive switch LGKA one end, and tripping coil LT one end connects the negative electrode of diode D10, motherboard power supply positive pole BA, one end of the trigger tube B5 of three serial connections, the tripping coil LT other end connects the anode of diode D10, one end of resistance R7, the drain electrode of field effect transistor 4N90, the other end of resistance R7 connects one end of trigger tube B4, the anode of controllable silicon CR, one end of the normally opened contact DJK of relay DJ, one end of electric capacity C10, one end of resistance R8, the power end of voltage-stabiliser tube W1, the other end of electric capacity C10 is connected with the other end of resistance R8 on power supply BG line, the other end of the normally opened contact DJK of relay DJ connects on triggering signal point BH, and relay DJ coil two ends connect mainboard external control signal input wires point JI, JO, the other end of trigger tube B4, the other end of resistance R9, the negative electrode of controllable silicon CR, the other end of resistance R14, the other end of electric capacity C14 and one end of resistance R10 meet on triggering signal point BH, one end of resistance R9 connects the other end of the trigger tube B5 that three are serially connected, the other end of one end contact resistance R13 of electric capacity C14 and the control pole of controllable silicon CR, the other end of one end contact resistance R12 of resistance R13 and one end of electric capacity C13, one end of resistance R12 connects the negative electrode of voltage-stabiliser tube W3, electric capacity C12 one end and electric leakage induction coil B0 access point RI, the anode of voltage-stabiliser tube W3 and one end of resistance R14 and electric capacity C12, the electric capacity C13 other end meets at electric leakage induction coil access point RG, the resistance R10 other end connects the grid of field effect transistor 4N90, the negative electrode of voltage-stabiliser tube W2, one end of electric capacity C11 and one end of resistance R11, the source electrode of field effect transistor 4N90, the anode of voltage-stabiliser tube W2, the other end of electric capacity C11 and the other end of resistance R11 meet on power supply BG line.
As a kind of preferred version, described electric capacity C1, electric capacity C2, electric capacity C3, electric capacity C4, electric capacity C5, electric capacity C6 are buffer capacitor.
As a kind of preferred version, described positive temperature coefficient resistance RA, positive temperature coefficient resistance RB, positive temperature coefficient resistance RC are the protection of mainboard internal fault and self-shield sample resistance.
As a kind of preferred version, described resistance R7 is the source current limiting resistance of mainboard to electric leakage, phase shortage, under-voltage, outer control function setting.
As a kind of preferred version, described trigger tube B4 is that default phase signal or under-voltage signal lag drive trigger tube, and working value selects 90V.
As a kind of preferred version, described electric capacity C10 is integration energy storage delay capacitor.
As a kind of preferred version, described resistance R8 is time-delay reset resistance.
As a kind of preferred version, described trigger tube B5 is 240V high pressure trigger tube.
As a kind of preferred version, described resistance R9 and resistance R10 is current-limiting resistance.
As a kind of preferred version, described diode D10 is weakening diode.
The present invention compared with prior art has obvious advantage and beneficial effect, specifically, as shown from the above technical solution:
The present invention utilizes micro-magnetic on state characteristic of the electromagnetic property of hot-wire coil and tongue tube, directly the current course that quantitative change scope is very large is converted to the break-make both sexes of Push And Release, makes electric current inductive switch unit, high pressure trigger tube and rectifying tube, resistance, electric capacity, the optocoupler components of applied voltage gating triggering negative resistance on state characteristic make voltage induced switch element, three electric current inductive switch unit and three voltage induced switch elements are implanted in three-phase circuit, defines six with the small area analysis switch of electrical characteristics Push And Release, they are complied with the sense of current and is together in series, define a default phase signal master switch, but because they are operated in the out of phase of three-phase alternating current, their break-makes are not at one time on node, namely be that alter switch action all done by each switch, but be difficult to realize electric current pass through, for this reason at the capacitor that each P cock two ends parallel connection one of series connection is suitable, switching current is allowed to be that eddy current rolling type passes through, define pulsation default phase signal current path, it by electric current be milliampere level, in order to this small area analysis switch can be adapted to as switch control rule work, the present invention adopts the field effect transistor of voltage driven electronic switching element as master control output element, utilize source current as secondary signal source, voltage segmented mode is taked to produce electric leakage and outer control and phase shortage and under-voltage etc. secondary drive singal, form point with ultra-voltage triggering signal to drive and always export, voltage-stabiliser tube is adopted to seal in the preferred power supply producing electric leakage and extraneous signal controlling functions in open-phase protection signal code loop, define a source multipurpose feature of this device, and the source current that this device electric leakage phase shortage controls outward etc. is by resistance R7 current limliting, the value of resistance R7 gets 22M Ω all energy reliably workings, visible device is when 380V alternating current circuit is applied, the electric current that resistance R7 passes through is microampere pole, the wastage in bulk or weight of resistance R7 and thereafter circuit is within 0.03W, add that the current-limiting resistance R1=R2=R3 value of voltage phase shortage inductive switch gets 3.3M Ω, consume estimation at about 0.1W, superpressure is drawn circuits for triggering and is consumed 0.005W, this device estimates that except switch contact consumption total power consumption is not at most also more than 0.15W, in addition three electric current phase shortage inductive switch series connection group two ends and on a microswitch, achieve the open and close of function of current phase-loss protection, after close current default-phase protection function, this device can be used for the overcurrent of common three-phase electric apparatus, electric leakage, superpressure, voltage phase shortage, and the protection that extraneous signal controls uses, the reverse voltage that overpressure protection function produces after disconnecting three-phase in addition has absorption protective effect, described in before combining, this small product size is little, cost is low, use power consumption is little, compatible strong, be applicable to the overcurrent of threephase asynchronous and common three-phase electric apparatus, electric leakage, superpressure, under-voltage, current/voltage phase shortage (common three-phase electric apparatus uses need not electric current phase shortage function, can close), extraneous signal control dropout open circuit protection.
For more clearly setting forth architectural feature of the present invention and effect, below in conjunction with accompanying drawing and specific embodiment, the present invention is described in detail.
Accompanying drawing explanation
Fig. 1 is the structural representation of the preferred embodiment of the present invention;
Fig. 2 is the enlarged diagram of electric current phase shortage sensitive switch circuit in the preferred embodiment of the present invention;
Fig. 3 is the enlarged diagram of voltage phase shortage sensitive switch circuit in the preferred embodiment of the present invention.
Embodiment
Please refer to shown in Fig. 1 to Fig. 3, that show the concrete structure of the preferred embodiment of the present invention, include AC power lead-in clamp INN, AC power lead-in clamp INA, AC power lead-in clamp INB, AC power lead-in clamp INC, trip switch KA, trip switch KB, trip switch KC, tripping coil LA, tripping coil LB, tripping coil LC and tripping coil 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, 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, photoelectric coupling electronics amplification integrated block IC C, two trigger tube B1, two trigger tube B2, two trigger tube B3, trigger tube B4, three trigger tube B5, voltage-stabiliser tube W1, voltage-stabiliser tube W2, voltage-stabiliser tube W3, controllable silicon CR, midget relay DJ, field effect transistor 4N90.
AC power lead-in clamp INN is directly by going between through electric leakage induction coil BO auto levelizer output wiring terminal OUTN; AC power lead-in clamp INA connects trip switch KA front end, trip switch KA rear end connects tripping coil LA front end, tripping coil LA rear end connects wire through electric leakage induction coil BO to electric current phase shortage inductive switch coil LGA front end, end connection device output wiring terminal OUTA after electric current phase shortage inductive switch coil LGA; AC power lead-in clamp INB connects trip switch KB front end, trip switch KB rear end connects tripping coil LB front end, tripping coil LB rear end connects wire through electric leakage induction coil BO to electric current phase shortage inductive switch coil LGB front end, end connection device output wiring terminal OUTB after electric current phase shortage inductive switch coil LGB; AC power lead-in clamp INC connects trip switch KC front end, trip switch KC rear end connects tripping coil LC front end, tripping coil LC rear end connects wire through electric leakage induction coil BO to electric current phase shortage inductive switch coil LGC front end, end connection device output wiring terminal OUTC after electric current phase shortage inductive switch coil LGC; After electric current phase shortage inductive switch LGKA, electric current phase shortage inductive switch LGKB, electric current phase shortage inductive switch LGKC are in parallel with electric capacity C1, electric capacity C2, electric capacity C3 respectively, be together in series electric current phase shortage inductive switch LGKA, electric current phase shortage inductive switch LGKB, electric current phase shortage inductive switch LGKC arbitrarily formation two end, in this two ends parallel connection after electric current phase shortage selector switch XK, one end connects mainboard voltage phase shortage sensitive switch output XI, and the other end connects on motherboard power supply negative terminal BG line; Leak(age) test button AN mono-end connection device output wiring terminal OUTB, the leak(age) test button AN other end connects leak(age) test current-limiting resistance RN one end, and the leak(age) test current-limiting resistance RN other end is 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 end respectively, connect again positive temperature coefficient resistance RA, RB, RC one end respectively, positive temperature coefficient resistance RA, RB, RC other end connects three-phase commutation bridge ac input end CA, CB, CC of diode D4, D5, D6, D7, D8, D9 composition respectively, three-phase commutation bridge positive voltage output end connects potential point BA, and its negative voltage output connects potential point BG.
The former limit of voltage phase shortage inductive switch, phase A road connects the anode of diode D1 from exchanging some CA, negative terminal contact resistance R1 one end of diode D1, the resistance R1 other end connects electric capacity C7 one end, the electric capacity C7 other end is connected with interchange point CB with the resistance R4 other end is in parallel, resistance R4 one end is connected with the other end of two trigger tube B1 of serial connection, one end of two trigger tube B1 of serial connection is connected with the negative terminal of the light-emitting diode on the former limit of photoelectric coupling electronics amplification integrated block IC A, the anode contact resistance R1 other end of the light-emitting diode on the former limit of photoelectric coupling electronics amplification integrated block IC A, and be connected with electric capacity C7 one end.
The former limit of voltage phase shortage inductive switch, phase B road connects the anode of diode D2 from exchanging some CB, negative terminal contact resistance R2 one end of diode D2, the resistance R2 other end connects electric capacity C8 one end, the electric capacity C8 other end is connected with interchange point CC with the resistance R5 other end is in parallel, resistance R5 one end is connected with the other end of two trigger tube B2 of serial connection, one end of two trigger tube B2 of serial connection is connected with the negative terminal of the light-emitting diode on the former limit of photoelectric coupling electronics amplification integrated block IC B, the anode contact resistance R2 other end of the light-emitting diode on the former limit of photoelectric coupling electronics amplification integrated block IC B, and be connected with electric capacity C8 one end.
The former limit of voltage phase shortage inductive switch, phase C road connects the anode of diode D3 from exchanging some CC, negative terminal contact resistance R3 one end of diode D3, the resistance R3 other end connects electric capacity C9 one end, the electric capacity C9 other end is connected with interchange point CA with the resistance R6 other end is in parallel, resistance R6 one end is connected with the other end of two trigger tube B3 of serial connection, one end of two trigger tube B3 of serial connection is connected with the negative terminal of the light-emitting diode on the former limit of photoelectric coupling electronics amplification integrated block IC C, the anode contact resistance R3 other end of the light-emitting diode on the former limit of photoelectric coupling electronics amplification integrated block IC C, and be connected with electric capacity C9 one end.
The annular series connection mutually of phase A, phase B, phase C tri-former limits of symmetrical voltage phase shortage inductive switch, starting point is connected with alternating current pressure point CA, CB, CC respectively, defines loop, phase of three-phase voltage inductive switch former limit, by the secondary collector and emitter of photoelectric coupling electronics amplification integrated block IC A, the secondary collector and emitter of photoelectric coupling electronics amplification integrated block IC B, the secondary collector and emitter upper electric capacity C4 in parallel respectively of photoelectric coupling electronics amplification integrated block IC C, electric capacity C5, also comply with the sense of current successively connects into closed loop circuit to electric capacity C6, a point is disconnected arbitrarily in three points, define a collector electrode input and another emitter output, collector electrode input connects the negative terminal of voltage-stabiliser tube W1, emitter output XI connects electric current phase shortage sensitive switch LGKA one end, and tripping coil LT one end connects the negative electrode of diode D10, motherboard power supply positive pole BA, one end of the trigger tube B5 of three serial connections, the tripping coil LT other end connects the anode of diode D10, one end of resistance R7, the drain electrode of field effect transistor 4N90, the other end of resistance R7 connects one end of trigger tube B4, the anode of controllable silicon CR, one end of the normally opened contact DJK of relay DJ, one end of electric capacity C10, one end of resistance R8, the power end of voltage-stabiliser tube W1, the other end of electric capacity C10 is connected with the other end of resistance R8 on power supply BG line, the other end of the normally opened contact DJK of relay DJ connects on triggering signal point BH, and relay DJ coil two ends connect mainboard external control signal input wires point JI, JO, the other end of trigger tube B4, the other end of resistance R9, the negative electrode of controllable silicon CR, the other end of resistance R14, the other end of electric capacity C14 and one end of resistance R10 meet on triggering signal point BH, one end of resistance R9 connects the other end of the trigger tube B5 that three are serially connected, the other end of one end contact resistance R13 of electric capacity C14 and the control pole of controllable silicon CR, the other end of one end contact resistance R12 of resistance R13 and one end of electric capacity C13, one end of resistance R12 connects the negative electrode of voltage-stabiliser tube W3, electric capacity C12 one end and electric leakage induction coil B0 access point RI, the anode of voltage-stabiliser tube W3 and one end of resistance R14 and electric capacity C12, the electric capacity C13 other end meets at electric leakage induction coil access point RG, the resistance R10 other end connects the grid of field effect transistor 4N90, the negative electrode of voltage-stabiliser tube W2, one end of electric capacity C11 and one end of resistance R11, the source electrode of field effect transistor 4N90, the anode of voltage-stabiliser tube W2, the other end of electric capacity C11 and the other end of resistance R11 meet on power supply BG line.
In the present embodiment, electric current phase shortage sensitive switch is for phase A, electric current phase shortage induction coil LGA/ electric current phase shortage inductive switch LGKA is the short cylinder of plastics with diameter 12MM, enclose around upper enough thick enamelled wire 11, the normally opened contact tongue tube of high sensitive magnetic is adopted to connect lead-in wire, carrying out insulation to insert afterwards in the coil hole wound, as long as electric current is at more than 0.6A in coil current phase shortage induction coil LGA, tongue tube normally opened contact just closes connection, voltage phase shortage inductive switch is for phase A, adopt the rectification of two 210V high pressure trigger tube series connection formation 420V voltage gating element and diode D1, utilize the electric light electric isolution amplification characteristic of photoelectric coupling electronics amplification integrated block IC A, be that 3.3M Ω makes current limliting by resistance R1 value, resistance R4 does to trigger buffering current limliting, integration energy storage is done with electric capacity C7, current buffering is made with electric capacity C4, (being equivalent to alternating voltage 300V) conducting when two trigger tube B1 both end voltage of series connection are greater than 420V, conducting after-current road is luminous through the former limit light-emitting diode of photoelectric coupling amplification integrated block IC A, cause the phototriode conducting of photoelectric coupling amplification integrated block IC A secondary, make three parts of symmetrical voltage gated optical electric coupling electronic switches and three parts of symmetrical electric current gating electromagnetic induction switchs after this manner, two ends are formed after they being complied with sense of current series connection, and the capacitor giving six relatively independent electric drive switch in parallel same, electric current road is when their this series connection groups, because each switch motion timing node is different, electric current presents eddy current rolling type to be passed through, as long as there is a switch obstructed, current path is just cut-off, resistance R7 is the source current limiting resistance of mainboard to electric leakage, phase shortage, under-voltage, outer control function setting, value selects 22M Ω resistance, it is about 30uA by electric current, namely meets the integration needs of circuits for triggering, meets again the small area analysis condition of work of phase shortage sensitive switch group, electric capacity C7 is storage capacitor, voltage-stabiliser tube W1 sets up electric leakage and the outer preferred power supply controlling to trigger, and selects voltage stabilizing value to be 36V, and guarantee electric leakage at any time and the outer power supply controlling to trigger need, relay DJ is extraneous signal control inputs and buffer action, resistance R8 is time-delay reset resistance, and value selects 44M Ω, one-way SCR CR is by leakage trigger electronic switch, produces electric leakage secondary drive current, the circuit that electric capacity C12, electric capacity C13, electric capacity C14, resistance R12, resistance R13, resistance R14 and voltage-stabiliser tube W3 form is electric leakage signal input threshold and Anti-Jamming, trigger tube B4 is that default phase signal or under-voltage signal lag drive trigger tube, and working value selects 90V, three trigger tube B5 are that ultra-voltage draws trigger action, form 720V voltage gating characteristics with three 240V high pressure trigger tube series connection, resistance R9, resistance R10 are current-limiting resistance, resistance R11 electric capacity C11 is stability maintenance time-lag action, ensures that the electronic switch that is triggered normally works, voltage-stabiliser tube W2 is 20V field effect transistor input voltage-limiting protection, field effect transistor 4N90 is voltage driven power electronic switching, diode D10 is weakening effect, tripping coil LT is the comprehensive dropout electromagnetic conversion mechanical energy assembly such as electric leakage, phase shortage, superpressure, under-voltage, external signal control, tripping coil LA, tripping coil LB, tripping coil LC are that corresponding phase current exceeds the quata to determine dropout electromagnetic conversion mechanical energy assembly, electric leakage induction coil BO obtains the effect that electrical leakage quantity is signal, diode D4, diode D5, diode D6, diode D7, diode D8, diode D9 are for completing three-phase or single-phase rectifier work, positive temperature coefficient resistor RA, positive temperature coefficient resistor RB, positive temperature coefficient resistor RC are for producing self protective function resistance.
Three-phase or single-phase power rectifier unit is formed by diode D4, diode D5, diode D6, diode D7, diode D8, diode D9; Carry out three phase mains rectification when three-phase CA, CB, CC terminal voltage is normal, carry out single-phase rectifier when three-phase CA, CB, CC terminal voltage has a phase terminal voltage too low.
Form with voltage-stabiliser tube W2 and field effect transistor 4N90 and tripping coil LT the drived control trip unit that is triggered by resistance R10, resistance R11 and electric capacity C11.When signaling point BH inputs enough driving voltages; electric current cushions through resistance R10 and charges to electric capacity C11; 20V is limited in by voltage-stabiliser tube W2; and discharge through resistance R11 time delay; field effect transistor 4N90 conducting by driving simultaneously; power supply BA anode is crossed field effect transistor 4N90 by tripping coil LT and is formed electric current to power supply negative terminal, and tripping coil LT converts electric energy to electromagnetic and mechanical can drive trip switch deenergization, produces protection act.
Ultra-voltage trigger element is formed by three trigger tube B5 and resistance R9; When power supply BA to BG voltage is more than 720V, three rapid conductings of trigger tube B5, power supply BA crosses resistance R3 to BH generation current signal through three trigger tube B5, and the drived control trip unit that makes to be triggered completes dropout protection work.
Phase shortage Time-delayed trigger unit is formed by resistance R7 and trigger tube B4 and electric capacity C10 and voltage-stabiliser tube W1 and the voltage phase shortage of connecting thereof and electric current phase shortage inductive switch series connection group; When electric current in voltage-stabiliser tube W1 because electric current phase shortage or voltage phase shortage and under-voltage cut-off time; electric current through resistance R7 constantly charges to electric capacity C7; within about 3 seconds, BC point voltage rises to 90V from 36V+, and trigger tube B4 is triggered and conducting, and the drived control trip unit that makes to be triggered completes dropout protection work.
Leakage trigger unit is formed 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 the induction coil BO that leaks electricity; When leakage current is equal to or greater than set point; electric leakage induction coil BO induced current triggers controllable silicon CR through the thresholding be made up of electric capacity C12, electric capacity C13, electric capacity C14 and resistance R12, resistance R13, resistance R14 and voltage-stabiliser tube W3; the 36V+ electric energy that electric capacity C10 two ends keep is discharged to BH generation current signal through controllable silicon CR, and the drived control trip unit that makes to be triggered completes dropout protection work.
Leakage function test unit is formed by leak(age) test switch AN and leak(age) test current-limiting resistance RN; When leak(age) test switch AN connects; from trip switch KB to tripping coil LB, rear end goes between through in the middle of electric leakage induction coil BO phase B; overcurrent phase shortage induction coil LGB is to leak(age) test switch AN; cross leak(age) test current-limiting resistance RN to tripping coil LC and cross trip switch KC connection phase C; visible current circuit single line is through in the middle of electric leakage induction coil BO; cause the alternating magnetic field of electric leakage induction coil BO uneven; induce electric leakage signal; cause creepage protection function circuit to carry out dropout protection act, creepage protection function is detected.
K switch is connected in parallel on three-phase current phase shortage inductive switch series connection group two ends and forms the unlatching of electric current phase shortage or closing function unit; When K switch closes, three-phase current phase shortage inductive switch is shorted inefficacy, and when contrary K switch disconnects, switch is considered as losing efficacy, three-phase current phase shortage inductive switch functional rehabilitation.
Earth leakage protective and extraneous signal control inputs preferred power supply unit is formed by resistance R7 and electric capacity C10 and voltage-stabiliser tube W1; When the voltage of voltage-stabiliser tube W1 anode tap to power supply BG line equals 0V, because voltage-stabiliser tube characteristic maintains the voltage 36V of voltage stabilizing value, remain the triggering voltage of earth leakage protective and extraneous signal control inputs.
Phase of three-phase voltage sensitive switch unit is formed by diode D1, diode D2, diode D3, two trigger tube B1, two trigger tube B2, two trigger tube B3, resistance R1, resistance R2, resistance R3, resistance R4, resistance R5, resistance R6, photoelectric coupling electronics amplification integrated block IC A, photoelectric coupling electronics amplification integrated block IC B, photoelectric coupling electronics amplification integrated block IC C, electric capacity C4, electric capacity C5, electric capacity C6; When the relative alternating voltage of mainboard three-phase alternating current pressure point CA, CB, CC is greater than 300V to 380V, three-phase voltage sensitive switch is greater than 420V to 540V is triggered conducting because trigger tube two ends reaches direct voltage, photoelectric coupling electronics amplifier integrated block former limit diode is the short duration current of 50 milliseconds to 2 seconds by the cycle, the secondary phototriode corresponding generation burst pulse conducting phase, the pulsation of voltage-stabiliser tube W1 series loop current is passed through, BC point voltage fluctuates, but is less than 90V, and trigger tube B4 keeps waiting for; When the relative alternating voltage of mainboard three-phase alternating current pressure point CA, CB, CC is lower than 300V; wherein a phase or two-phase voltage sensor switch is caused to fail to trigger and obstructed because trigger tube two ends do not reach direct voltage 420V; photoelectric coupling secondary phototriode is caused to end; voltage-stabiliser tube W1 series loop current is zero; BC point voltage rises to 90V; electric energy on electric capacity C10 produces trigger current signal by trigger tube B4 to BH, and the drived control trip unit that makes to be triggered completes dropout protection work.
Three-phase current phase shortage sensitive switch unit is constituted by electric current phase shortage inductive switch coil LGA, electric current phase shortage inductive switch coil LGB, electric current phase shortage inductive switch coil 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, electric capacity C1, electric capacity C2, electric capacity C3; 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 greater than more than 0.6A, three-phase tongue tube all interval closes or closes for a long time, the pulsation of voltage-stabiliser tube W1 series loop current is passed through, BC point voltage fluctuates, but be less than 90V, trigger tube B4 keeps waiting for; When in three-phase current phase shortage inductive switch, arbitrary phase current is less than 0.6A; this phase tongue tube will can not close and open a way for a long time; voltage-stabiliser tube W1 series loop current is caused to be zero; BC point voltage rises; about cross 3 seconds BC point voltages and rise to 90V; trigger tube B4 is triggered and conducting, and the electric energy on electric capacity C10 is by trigger tube B4 to BH generation current signal, and the drived control trip unit that makes to be triggered completes dropout protection work.
In the present embodiment, in order to cost-saving, high pressure trigger tube low pressure trigger tube can be replaced:
1, trigger tube B4=90V, to connect offspring's use with three DB3 (low pressure trigger tube), magnitude of voltage is 99V.
2, trigger tube B1*2=B2*2=B3*3=420V, replace with 12 DB3 series connection, magnitude of voltage is 396V.
3, trigger tube B5*3=720V, replace with 22 DB3 series connection, magnitude of voltage is 726V.
The above, it is only preferred embodiment of the present invention, not technical scope of the present invention is imposed any restrictions, thus every above embodiment is done according to technical spirit of the present invention any trickle amendment, equivalent variations and modification, all still belong in the scope of technical solution of the present invention.
Claims (10)
1. a low power consumption and low cost how compatible three-phase electric apparatus open circuit comprehensive protector, is characterized in that: include AC power lead-in clamp INN, AC power lead-in clamp INA, AC power lead-in clamp INB, AC power lead-in clamp INC, trip switch KA, trip switch KB, trip switch KC, tripping coil LA, tripping coil LB, tripping coil LC and tripping coil 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, 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, photoelectric coupling electronics amplification integrated block IC C, two trigger tube B1, two trigger tube B2, two trigger tube B3, trigger tube B4, three trigger tube B5, voltage-stabiliser tube W1, voltage-stabiliser tube W2, voltage-stabiliser tube W3, controllable silicon CR, midget relay DJ, field effect transistor 4N90,
AC power lead-in clamp INN is directly by going between through electric leakage induction coil BO auto levelizer output wiring terminal OUTN; AC power lead-in clamp INA connects trip switch KA front end, trip switch KA rear end connects tripping coil LA front end, tripping coil LA rear end connects wire through electric leakage induction coil BO to electric current phase shortage inductive switch coil LGA front end, end connection device output wiring terminal OUTA after electric current phase shortage inductive switch coil LGA; AC power lead-in clamp INB connects trip switch KB front end, trip switch KB rear end connects tripping coil LB front end, tripping coil LB rear end connects wire through electric leakage induction coil BO to electric current phase shortage inductive switch coil LGB front end, end connection device output wiring terminal OUTB after electric current phase shortage inductive switch coil LGB; AC power lead-in clamp INC connects trip switch KC front end, trip switch KC rear end connects tripping coil LC front end, tripping coil LC rear end connects wire through electric leakage induction coil BO to electric current phase shortage inductive switch coil LGC front end, end connection device output wiring terminal OUTC after electric current phase shortage inductive switch coil LGC; After electric current phase shortage inductive switch LGKA, electric current phase shortage inductive switch LGKB, electric current phase shortage inductive switch LGKC are in parallel with electric capacity C1, electric capacity C2, electric capacity C3 respectively, be together in series electric current phase shortage inductive switch LGKA, electric current phase shortage inductive switch LGKB, electric current phase shortage inductive switch LGKC arbitrarily formation two end, in this two ends parallel connection after electric current phase shortage selector switch XK, one end connects mainboard voltage phase shortage sensitive switch output XI, and the other end connects on motherboard power supply negative terminal BG line; Leak(age) test button AN mono-end connection device output wiring terminal OUTB, the leak(age) test button AN other end connects leak(age) test current-limiting resistance RN one end, and the leak(age) test current-limiting resistance RN other end is 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 end respectively, connect again positive temperature coefficient resistance RA, RB, RC one end respectively, positive temperature coefficient resistance RA, RB, RC other end connects three-phase commutation bridge ac input end CA, CB, CC of diode D4, D5, D6, D7, D8, D9 composition respectively, three-phase commutation bridge positive voltage output end connects potential point BA, and its negative voltage output connects potential point BG;
The former limit of voltage phase shortage inductive switch, phase A road connects the anode of diode D1 from exchanging some CA, negative terminal contact resistance R1 one end of diode D1, the resistance R1 other end connects electric capacity C7 one end, the electric capacity C7 other end is connected with interchange point CB with the resistance R4 other end is in parallel, resistance R4 one end is connected with the other end of two trigger tube B1 of serial connection, one end of two trigger tube B1 of serial connection is connected with the negative terminal of the light-emitting diode on the former limit of photoelectric coupling electronics amplification integrated block IC A, the anode contact resistance R1 other end of the light-emitting diode on the former limit of photoelectric coupling electronics amplification integrated block IC A, and be connected with electric capacity C7 one end,
The former limit of voltage phase shortage inductive switch, phase B road connects the anode of diode D2 from exchanging some CB, negative terminal contact resistance R2 one end of diode D2, the resistance R2 other end connects electric capacity C8 one end, the electric capacity C8 other end is connected with interchange point CC with the resistance R5 other end is in parallel, resistance R5 one end is connected with the other end of two trigger tube B2 of serial connection, one end of two trigger tube B2 of serial connection is connected with the negative terminal of the light-emitting diode on the former limit of photoelectric coupling electronics amplification integrated block IC B, the anode contact resistance R2 other end of the light-emitting diode on the former limit of photoelectric coupling electronics amplification integrated block IC B, and be connected with electric capacity C8 one end,
The former limit of voltage phase shortage inductive switch, phase C road connects the anode of diode D3 from exchanging some CC, negative terminal contact resistance R3 one end of diode D3, the resistance R3 other end connects electric capacity C9 one end, the electric capacity C9 other end is connected with interchange point CA with the resistance R6 other end is in parallel, resistance R6 one end is connected with the other end of two trigger tube B3 of serial connection, one end of two trigger tube B3 of serial connection is connected with the negative terminal of the light-emitting diode on the former limit of photoelectric coupling electronics amplification integrated block IC C, the anode contact resistance R3 other end of the light-emitting diode on the former limit of photoelectric coupling electronics amplification integrated block IC C, and be connected with electric capacity C9 one end,
The annular series connection mutually of phase A, phase B, phase C tri-former limits of symmetrical voltage phase shortage inductive switch, starting point is connected with alternating current pressure point CA, CB, CC respectively, defines loop, phase of three-phase voltage inductive switch former limit, by the secondary collector and emitter of photoelectric coupling electronics amplification integrated block IC A, the secondary collector and emitter of photoelectric coupling electronics amplification integrated block IC B, the secondary collector and emitter upper electric capacity C4 in parallel respectively of photoelectric coupling electronics amplification integrated block IC C, electric capacity C5, also comply with the sense of current successively connects into closed loop circuit to electric capacity C6, a point is disconnected arbitrarily in three points, define a collector electrode input and another emitter output, collector electrode input connects the negative terminal of voltage-stabiliser tube W1, emitter output XI connects electric current phase shortage sensitive switch LGKA one end, and tripping coil LT one end connects the negative electrode of diode D10, motherboard power supply positive pole BA, one end of the trigger tube B5 of three serial connections, the tripping coil LT other end connects the anode of diode D10, one end of resistance R7, the drain electrode of field effect transistor 4N90, the other end of resistance R7 connects one end of trigger tube B4, the anode of controllable silicon CR, one end of the normally opened contact DJK of relay DJ, one end of electric capacity C10, one end of resistance R8, the power end of voltage-stabiliser tube W1, the other end of electric capacity C10 is connected with the other end of resistance R8 on power supply BG line, the other end of the normally opened contact DJK of relay DJ connects on triggering signal point BH, and relay DJ coil two ends connect mainboard external control signal input wires point JI, JO, the other end of trigger tube B4, the other end of resistance R9, the negative electrode of controllable silicon CR, the other end of resistance R14, the other end of electric capacity C14 and one end of resistance R10 meet on triggering signal point BH, one end of resistance R9 connects the other end of the trigger tube B5 that three are serially connected, the other end of one end contact resistance R13 of electric capacity C14 and the control pole of controllable silicon CR, the other end of one end contact resistance R12 of resistance R13 and one end of electric capacity C13, one end of resistance R12 connects the negative electrode of voltage-stabiliser tube W3, electric capacity C12 one end and electric leakage induction coil B0 access point RI, the anode of voltage-stabiliser tube W3 and one end of resistance R14 and electric capacity C12, the electric capacity C13 other end meets at electric leakage induction coil access point RG, the resistance R10 other end connects the grid of field effect transistor 4N90, the negative electrode of voltage-stabiliser tube W2, one end of electric capacity C11 and one end of resistance R11, the source electrode of field effect transistor 4N90, the anode of voltage-stabiliser tube W2, the other end of electric capacity C11 and the other end of resistance R11 meet on power supply BG line.
2. a kind of low power consumption and low cost according to claim 1 how compatible three-phase electric apparatus open circuit comprehensive protector, is characterized in that: described electric capacity C1, electric capacity C2, electric capacity C3, electric capacity C4, electric capacity C5, electric capacity C6 are buffer capacitor.
3. a kind of low power consumption and low cost according to claim 1 how compatible three-phase electric apparatus open circuit comprehensive protector, is characterized in that: described positive temperature coefficient resistance RA, positive temperature coefficient resistance RB, positive temperature coefficient resistance RC are the protection of mainboard internal fault and self-shield sample resistance.
4. a kind of low power consumption and low cost according to claim 1 how compatible three-phase electric apparatus open circuit comprehensive protector, is characterized in that: described resistance R7 is the source current limiting resistance of mainboard to electric leakage, phase shortage, under-voltage, outer control function setting.
5. a kind of low power consumption and low cost according to claim 1 how compatible three-phase electric apparatus open circuit comprehensive protector, is characterized in that: described trigger tube B4 is that default phase signal or under-voltage signal lag drive trigger tube, and working value selects 90V.
6. a kind of low power consumption and low cost according to claim 1 how compatible three-phase electric apparatus open circuit comprehensive protector, is characterized in that: described electric capacity C10 is integration energy storage delay capacitor.
7. a kind of low power consumption and low cost according to claim 1 how compatible three-phase electric apparatus open circuit comprehensive protector, is characterized in that: described resistance R8 is time-delay reset resistance.
8. a kind of low power consumption and low cost according to claim 1 how compatible three-phase electric apparatus open circuit comprehensive protector, is characterized in that: described trigger tube B5 is 240V high pressure trigger tube.
9. a kind of low power consumption and low cost according to claim 1 how compatible three-phase electric apparatus open circuit comprehensive protector, is characterized in that: described resistance R9 and resistance R10 is current-limiting resistance.
10. a kind of low power consumption and low cost according to claim 1 how compatible three-phase electric apparatus open circuit comprehensive protector, is characterized in that: described diode D10 is weakening diode.
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