CN105305377A - Single-phase multifunctional protector with low power consumption - Google Patents
Single-phase multifunctional protector with low power consumption Download PDFInfo
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- CN105305377A CN105305377A CN201510831265.0A CN201510831265A CN105305377A CN 105305377 A CN105305377 A CN 105305377A CN 201510831265 A CN201510831265 A CN 201510831265A CN 105305377 A CN105305377 A CN 105305377A
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Abstract
The invention discloses a single-phase multifunctional protector with low power consumption. A overvoltage protection unit, a control input protection unit, an electric leakage testing unit, an over-current protection unit, and an electric leakage protection unit are integrated into the single-phase multifunctional protector so that the single-phase over-current, electric leakage, overvoltage and control protector is formed. The single-phase multifunctional protector may better protect circuit electric appliances, enables a switch to trip out, and is easy to marketize. In addition, the single-phase multifunctional protector is simple in structure, low in failure rate, high in power efficiency, and satisfies an energy-saving environment-friendly purpose without standby power consumption.
Description
Technical field
The present invention relates to electric prospection art, refer in particular to a kind of low-power consumption single-phase multifunctional protective device having gathered overcurrent, electric leakage, superpressure, Control protection.
Background technology
At present, China's mains voltage 220V ± 20% is normal, more than the value of 220V+20%=264V, claims ultra-voltage herein.Because electrical equipment kind increases day by day, people's power consumption rate also increases thereupon, electric power transmission network line load constantly increases the weight of, in order to adapt to new electricity consumption situation, power department also constantly updates circuit, meet the electricity consumption new demand of people, but unavoidable power failure also often occurs, produce sometimes and carry higher than 220V+20% voltage; Also have the private in building site to draw disorderly to connect, a lot of 380V pressure-wire is not indicated again, causes the electrical appliance of 220V power supply to be connected on 380V circuit, and ultra-voltage uses, and suffers heavy losses.Only have electric leakage on the market, overcurrent protective switch at present, this switch is fine, and when electric leakage is equal to or greater than set point, switch open circuit is tripped; Switch open circuit tripping operation when electric current is equal to or greater than overcurrent set point, and wait for period and there is no power consumption, be the energy saving environmental protection product that cost performance is very high, but inoperative to ultra-voltage.There is the automatically reset device of a kind of over voltage protection on the market, after ultra-voltage disappears, the product automatically connected when returning normal voltage; although the effect of over voltage protection can be played; but because of the built-in more numerous and diverse circuit of this product, and need one group of Power supply, the failure rate of itself is higher; power consumption is larger; generally want about 10W, 1 year wait for power consumption 86000 watts/time=86 degree, electricity charge valency is 1 yuan/degree when; it is 86 yuan that year pays, and is the device do not calculated.Also have under this device encounters line voltage superpressure fluctuation status, the connection of this exhaust, also has injury to electrical appliance, and this device does not leave ultra-voltage all the time in addition, too high once ultra-voltage, to the infringement of this device itself also likely.
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 low-power consumption single-phase multifunctional protective device; it not only meets the energy-conserving and environment-protective target without waiting for power consumption; but also contain the integrated protection cut-out function of overcurrent, electric leakage, superpressure, other input control order (instruction of temperature, air-sensitive, thermal infrared, microcomputer etc. circuit signal), deserve to be called the protection type disconnect that the cost performance of energy-conserving and environment-protective is high.
For achieving the above object, the present invention adopts following technical scheme:
A kind of low-power consumption single-phase multifunctional protective device, for being connected to phase line L
1with on zero line N, comprise overpressure protection unit, this overpressure protection unit is drawn connection circuit formed by trip switch, electric leakage induction coil, amplifier, electric leakage tripping coil, resistance R, ultra-voltage; The input phase phase-connecting wire L respectively of described trip switch
1with zero line N input interface, the output of trip switch is connected to load through after electric leakage induction coil; Described electric leakage induction coil exports two ends and connects amplifier input two ends, and amplifier exports two ends and connects electric leakage tripping coil input two ends, and the electromagnetic and mechanical produced when electric leakage tripping coil obtains electric energy can act on trip switch; Described ultra-voltage draws the zero line output connected circuit on one side and connect trip switch, other end contact resistance R output, and resistance R input is attached across the phase line rear end in electric leakage induction coil;
In non-ultra-voltage situation, ultra-voltage draws the voltage connected circuit two ends terminal voltages and equal between L1 and N, is less than ultra-voltage and draws and connect voltage setting value in circuit, and ultra-voltage draws to be connected circuit no current and passes through, and this protective device keeps normal work, when voltage between L1 and N is equal to or greater than superpressure setting, ultra-voltage draws connects circuit inductance to overflowing voltage signal and connecting, the electric current of power supply L1 flows through trip switch to be passed through in electric leakage induction coil, cross ultra-voltage to resistance R and draw connection circuit, power supply N line is returned to trip switch, visible ultra-voltage draws connects circuit loop electric current single line in electric leakage induction coil, power supply is back to from outward, cause in electric leakage induction coil and come and go current imbalance, come and go difference between current and be greater than electric leakage nominal value, the voltage that electric leakage induction coil produces is greater than amplifier threshold value, amplifier input signal output voltage is poor, electric leakage tripping coil obtains electric and produces magnetic force, trip switch is pulled to turn off, load dead electricity and being protected.
As a kind of preferred version, it is trigger tube DB3-DB6 tandem compound that described ultra-voltage draws connection circuit; Or voltage-stabiliser tube, Zener diode and controllable silicon combine; Or piezo-resistance and controllable silicon combine.
As a kind of preferred version, comprise control inputs protected location further, this control inputs protected location is made up of trip switch, electric leakage induction coil, amplifier, electric leakage tripping coil, resistance R, relay, and described control relay is parallel to ultra-voltage and draws on connection circuit loop;
When not having the operating voltage of input control relay, relay does not work, during the operating voltage of input control relay, relay normally open contact Operating In Persistent Current Mode, the electric current of power supply L1 flows through trip switch to be passed through in electric leakage induction coil, control relay normally opened contact is crossed to resistance R, power supply N line is returned to trip switch, visible relay normally open contact Operating In Persistent Current Mode loop current single line is in electric leakage induction coil, power supply is back to from outward, cause in electric leakage induction coil and come and go current imbalance, come and go difference between current and be greater than electric leakage nominal value, the voltage that electric leakage induction coil produces is greater than amplifier threshold value, amplifier input signal output voltage is poor, electric leakage tripping coil obtains electric and produces magnetic force, pull trip switch, power remove, load dead electricity and being protected.
As a kind of preferred version, described relay is high sensitive micro normally opened contact relay.
As a kind of preferred version, comprise leakage tests unit further, this leakage tests unit is made up of trip switch, electric leakage induction coil, amplifier, electric leakage tripping coil, resistance R, leak(age) test button, and described leak(age) test button is parallel to ultra-voltage and draws on connection circuit loop;
Leak(age) test button is connected, the electric current of power supply L1 flows through trip switch to be passed through in electric leakage induction coil, leak(age) test button is crossed to resistance R, power supply N line is returned to trip switch, visible leak(age) test loop current single line is in electric leakage induction coil, power supply is back to from outward, cause in electric leakage induction coil and come and go current imbalance, come and go difference between current and be greater than electric leakage nominal value, the voltage that electric leakage induction coil produces is greater than amplifier threshold value, amplifier input signal output voltage is poor, electric leakage tripping coil obtains electric and produces magnetic force, pull trip switch, power remove, creepage protection function is verified.
As a kind of preferred version, described resistance R is that relay input service or ultra-voltage draw the public current-limiting resistance connecting circuit superpressure work or leak(age) test button connection work, during round current imbalance in described electric leakage induction coil, its round difference between current calculates according to R resistance value.
As a kind of preferred version, comprise over-current protecting unit further, this over-current protecting unit is made up of overcurrent coil, trip switch, connects the output of current-release coil through the phase line front end in electric leakage induction coil, and the input of current-release coil connects the phase line output terminal of trip switch;
When L1 is reached by overcurrent tripping coil to the electric current of load or is greater than drop-away current value, the magnetic force moving trip switch tripping operation of generation, power cutoff.
As a kind of preferred version, comprise residual current protective unit further, this residual current protective unit is made up of trip switch, electric leakage induction coil, amplifier, electric leakage tripping coil; Power supply L1 through electric leakage induction coil through trip switch, to load circuit, then is returned by load circuit and turns back to N line through electric leakage induction coil to trip switch;
When A, nothing electric leakage, because coming and going current balance type in electric leakage induction coil, the induced voltage of electric leakage induction coil generation is zero, amplifier does not have voltage to input, output exports without driving voltage difference, and electric leakage tripping coil does not work because can not get voltage, and trip switch keeps on-state;
B, electric leakage very little time, though electric leakage induction coil in have unsymmetrical current, produce voltage less, amplifier input gate limit value can not be reached, amplifier out no-output voltage difference.Electric leakage tripping coil does not work because can not get voltage, and trip switch keeps on-state;
When C, electrical leakage are equal to or greater than nominal value, current imbalance is come and gone in electric leakage induction coil, the voltage that electric leakage induction coil produces is equal to or greater than amplifier threshold value and enters, amplifier out output voltage is poor, electric leakage tripping coil obtains electric and produces the action of magnetic force moving trip switch, power cutoff.
The present invention compared with prior art has obvious advantage and beneficial effect, specifically, as shown from the above technical solution:
One, overpressure protection function: by trip switch (8), electric leakage induction coil (4), amplifier (6), electric leakage tripping coil (7), resistance (R), ultra-voltage draws connects circuit (2) composition overpressure protection unit, when voltage between L1 and N is equal to or greater than superpressure setting, ultra-voltage draws to be connected circuit (2) and senses the voltage signal and connecting of overflowing, the electric current of power supply L1 flows through trip switch (8) to be passed through in electric leakage induction coil (4), cross ultra-voltage to resistance (R) and draw connection circuit (2), power supply N line is returned to trip switch (8), visible ultra-voltage draws connects circuit (2) loop current single line in electric leakage induction coil (4), power supply is back to from outward, cause in electric leakage induction coil (4) and come and go current imbalance, come and go difference between current and be greater than electric leakage nominal value, the voltage that electric leakage induction coil (4) produces is greater than amplifier (6) threshold value, amplifier (6) input signal output voltage is poor, electric leakage tripping coil (7) obtains electric and produces magnetic force, trip switch (8) is pulled to turn off, load (10) dead electricity and being protected.
Two, multi-functional: the present invention is except overpressure protection unit; also be integrated with control inputs protected location, leakage tests unit, over-current protecting unit, residual current protective unit; form a kind of single-phase overcurrent, electric leakage, superpressure, control protective unit; can better protective circuit electrical equipment; the protection switch tripping operation in other signal source, the very easily marketization.
Three, energy-conservation: this device be through ruminate over, contrast, a ultra-voltage broken circuit protecting equipment being approximately idle that EXPERIMENTAL DESIGN goes out; this apparatus structure is simple; so failure rate is very low; and very power saving; maximumly wait for power consumption 0.022W; year, maximum power consumption of waiting for was when 190W/, was equivalent to 0.2 degree, can meet the energy-conserving and environment-protective target without waiting for power consumption.The action Tu Na of device element repeats to allow current value to be 2A, and operating current, in 0.1 peace left and right, waits for electric current at below 0.0001A, so it can To Long Campaign Life.Installed a miniature relay additional simultaneously, this device is made to extend a variety of input protection mode, as temperature control instruction, fire-fighting instruction is (as smog, Thermal Infra-Red radiation) delay time control command, microcomputer instruction etc., when these instructions do not arrive, the power consumption of waiting for of relay equals 0, also energy-conserving and environment-protective requirement is met, this device is at overcurrent in addition, add in leakage, breaking switch and install, be equivalent to an electronic switch caused by voltage in parallel and again a normally opened contact relay by external other signal of telecommunication control in parallel at leak(age) test button two ends, simulation electric leakage process is equivalent to during their work, and original function is not affected, so this device contains overcurrent, electric leakage, superpressure, other instruction (temperature, air-sensitive, thermal infrared, the instruction of microcomputer etc. circuit signal) integrated protection cut-out function, deserve to be called the protection type disconnect that the cost performance of energy-conserving and environment-protective is high.
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 embodiment of the present invention;
Fig. 2 is the current direction figure of the embodiment overpressure protection unit of the present invention;
Fig. 3 is the current direction figure of the embodiment control inputs protected location of the present invention;
Fig. 4 is the current direction figure of the embodiment leakage tests unit of the present invention;
Fig. 5 is the embodiment over-current protecting unit of the present invention and the current direction figure of residual current protective unit.
Accompanying drawing identifier declaration:
(1), relay (2), ultra-voltage draw connection circuit
(3), leak(age) test button (4), electric leakage induction coil
(5), overcurrent tripping coil (6), amplifier
(7), leak electricity tripping coil (8), trip switch
(9), control signal input voltage (10), load circuit (electrical equipment).
Embodiment
Please refer to shown in Fig. 1; that show the concrete structure of the preferred embodiment of the present invention; be a kind of low-power consumption single-phase multifunctional protective device having gathered overcurrent, electric leakage, superpressure, Control protection, its structure comprise relay (1), ultra-voltage draw connect circuit (2), leak(age) test button (3), electric leakage induction coil (4), overcurrent tripping coil (5), amplifier (6), electric leakage tripping coil (7), trip switch (8), control signal input voltage (9), load circuit (electrical equipment) (10).
Described relay (1) input two ends are connected with input voltage (9), and relay output two ends are connected to ultra-voltage and draw connection circuit (2) two ends, loop; Described ultra-voltage draws connection circuit (2) two ends, loop and is connected to again on leak(age) test button (3) two ends; Described electric leakage button (3) one end contact resistance (R) output, resistance (R) input is attached across the phase line rear end in electric leakage induction coil (4), connect again the phase line output interface of apparatus of the present invention, the output of current-release coil (5) is connected through the phase line front end in electric leakage induction coil (4), the input of current-release coil (5) connects the phase line output terminal of trip switch (8), the phase line input of trip switch (8) is the phase line input interface of apparatus of the present invention, meets L1 in apparatus of the present invention accompanying drawing; Described leak(age) test button (3) other end is attached across the zero line front end of electric leakage induction coil (4), be connected to again the zero line output of trip switch (8), the zero line input of trip switch (8) connects the zero line input interface of apparatus of the present invention, meets N in apparatus of the present invention accompanying drawing; Zero line rear end through electric leakage induction coil (4) connects apparatus of the present invention zero line output interface; Described electric leakage induction coil (4) exports two ends and connects amplifier (6) input two ends, amplifier (6) exports two ends and connects electric leakage tripping coil (7) input two ends, and the electromagnetic and mechanical produced when electric leakage tripping coil (7) obtains electric energy can act on trip switch (8); The both ends of power of amplifier (6) is connected to apparatus of the present invention output interface two ends.
Preferably, described ultra-voltage draws connection circuit (2) is trigger tube DB3-DB6 tandem compound; Or voltage-stabiliser tube, Zener diode and controllable silicon combine; Or piezo-resistance and controllable silicon combine.Described relay (1) is high sensitive micro normally opened contact relay.Described resistance (R) connects the public current-limiting resistance of circuit (2) superpressure work or leak(age) test button (3) connection work for relay (1) input service or ultra-voltage draw, during round current imbalance in described electric leakage induction coil (4), its round difference between current calculates according to R resistance value.Described Control protection input voltage (9) is require setting according to counterpart input circuit.Described applied voltage (10) uses voltage for adapting to various two-wire system AC power circuit according to the change of relevant parameter.
Wherein, as shown in Figure 2, this device has overpressure protection function.The present invention is drawn connection circuit (2) formed overpressure protection unit by trip switch (8), electric leakage induction coil (4), amplifier (6), electric leakage tripping coil (7), resistance (R), ultra-voltage.Ultra-voltage draws connection circuit (2) and is parallel to leak(age) test button (3) two ends, in non-ultra-voltage situation, ultra-voltage draws the voltage connected circuit (2) two ends terminal voltages and equal between L1 and N, be less than ultra-voltage and draw connection circuit (2) interior voltage setting value (if superpressure value is 260V, voltage is lower than 260V), ultra-voltage draws connection circuit (2) no current to be passed through, similar leak(age) test button (3) off-state, and apparatus of the present invention keep normal work, when voltage between L1 and N is equal to or greater than superpressure setting, (being equal to, or greater than 260V) ultra-voltage draws to be connected circuit (2) and senses the voltage signal and connecting of overflowing, just as leak(age) test button (3) is connected, the electric current of power supply L1 flows through trip switch (8) to be streamline circle (5) and to have passed through in electric leakage induction coil (4), cross ultra-voltage to resistance (R) and draw connection circuit (2), power supply N line is returned to trip switch (8), visible ultra-voltage draws connects circuit (2) loop current single line in electric leakage induction coil (4), power supply is back to from outward, cause in electric leakage induction coil (4) and come and go current imbalance, come and go difference between current (calculating according to R resistance value) and be greater than electric leakage nominal value, the voltage that electric leakage induction coil (4) produces is greater than amplifier (6) threshold value, amplifier (6) input signal output voltage is poor, electric leakage tripping coil (7) obtains electric and produces magnetic force, trip switch (8) is pulled to turn off, load (10) dead electricity and being protected.
As shown in Figure 3, this device has control inputs defencive function further.The present invention is by trip switch (8), electric leakage induction coil (4), amplifier (6), electric leakage tripping coil (7), resistance (R), relay (1) composition control input protection unit.
The normally opened contact two ends of control relay (1) are parallel to leak(age) test switch ends.Also be parallel to ultra-voltage to draw on connection circuit (2) loop, when not having the operating voltage of input control relay (1), relay does not work, without any reaction (similar leak(age) test button is not pressed), during the operating voltage of input control relay (1), relay (1) normally opened contact Operating In Persistent Current Mode (just as leak(age) test button is connected), the electric current of power supply L1 flows through trip switch (8) to be streamline circle (5) and to have passed through in electric leakage induction coil (4), relay (1) normally opened contact is crossed to resistance (R), power supply N line is returned to trip switch (8), visible relay (1) normally opened contact Operating In Persistent Current Mode loop current single line is in electric leakage induction coil (4), power supply is back to from outward, cause in electric leakage induction coil (4) and come and go current imbalance, come and go difference between current (calculating according to R resistance value) and be greater than electric leakage nominal value, the voltage that electric leakage induction coil (4) produces is greater than amplifier (6) threshold value, amplifier (6) input signal output voltage is poor, electric leakage tripping coil (7) obtains electric and produces magnetic force, pull trip switch, power remove, load (10) dead electricity and being protected.
As shown in Figure 4, this device has leak(age) test function further.The present invention forms leakage tests unit by trip switch (8), electric leakage induction coil (4), amplifier (6), electric leakage tripping coil (7), resistance (R), leak(age) test button (3).
Described leak(age) test button (3) is parallel to ultra-voltage and draws on connection circuit (2) loop, button (3) is connected, the electric current of power supply L1 flows through trip switch (8) to be streamline circle (5) and to have passed through in electric leakage induction coil (4), leak(age) test button (3) is crossed to resistance (R), power supply N line is returned to trip switch (8), visible leak(age) test loop current single line is in electric leakage induction coil (4), power supply is back to from outward, cause in electric leakage induction coil (4) and come and go current imbalance, come and go difference between current (calculating according to R resistance value) and be greater than electric leakage nominal value, the voltage that electric leakage induction coil (4) produces is greater than amplifier (6) threshold value, amplifier (6) input signal output voltage is poor, electric leakage tripping coil (7) obtains electric and produces magnetic force, pull trip switch, power remove, creepage protection function is verified.
As shown in Figure 5, this device has overcurrent protection function further.The present invention forms over-current protecting unit by overcurrent coil (5), trip switch (8); when L1 is reached by overcurrent tripping coil (5) to the electric current of load (10) or is greater than drop-away current value; magnetic force moving trip switch (8) tripping operation produced, power cutoff.
As shown in Figure 5, this device has creepage protection function further.The present invention forms residual current protective unit by residual current protective unit by trip switch (8), electric leakage induction coil (4), amplifier (6), electric leakage tripping coil (7); power supply L1 passes electric leakage induction coil (4) through trip switch (8); to load circuit (10), then returned by load circuit (10) and turn back to N line through electric leakage induction coil (4) to trip switch (8).
When A, nothing electric leakage, because coming and going current balance type in electric leakage induction coil (4), the induced voltage that electric leakage induction coil (4) produces is zero, amplifier (6) does not have voltage to input, output exports without driving voltage difference, electric leakage tripping coil (7) does not work because can not get voltage, and trip switch (8) keeps on-state;
B, electric leakage very little time, electric leakage induction coil (4) though in have unsymmetrical current, produce voltage less, amplifier (6) input gate limit value can not be reached, amplifier (6) output no-output voltage difference.Electric leakage tripping coil (7) does not work because can not get voltage, and trip switch (8) keeps on-state;
When C, electrical leakage are equal to or greater than nominal value, current imbalance is come and gone in electric leakage induction coil (4), the voltage that electric leakage induction coil (4) produces is equal to or greater than amplifier (6) threshold value and enters, amplifier (6) output output voltage is poor, electric leakage tripping coil (7) obtains electric and produces magnetic force moving trip switch (8) action, power cutoff.
In sum; design focal point of the present invention is; it is integrated with overpressure protection unit, control inputs protected location, leakage tests unit, over-current protecting unit, residual current protective unit; form a kind of single-phase overcurrent, electric leakage, superpressure, control protective unit; can better protective circuit electrical equipment; the protection switch tripping operation in other signal source, the very easily marketization.
In addition; this device be through ruminate over, contrast, a ultra-voltage broken circuit protecting equipment being approximately idle that EXPERIMENTAL DESIGN goes out; this apparatus structure is simple; so failure rate is very low; and very power saving, maximumly wait for power consumption 0.022W, year, maximum power consumption of waiting for was when 190W/; being equivalent to 0.2 degree, the energy-conserving and environment-protective target without waiting for power consumption being met.The action Tu Na of device element repeats to allow current value to be 2A, and operating current, in 0.1 peace left and right, waits for electric current at below 0.0001A, so it can To Long Campaign Life.Installed a miniature relay additional simultaneously, this device is made to extend a variety of input protection mode, as temperature control instruction, fire-fighting instruction is (as smog, Thermal Infra-Red radiation) delay time control command, microcomputer instruction etc., when these instructions do not arrive, the power consumption of waiting for of relay equals 0, also energy-conserving and environment-protective requirement is met, this device is at overcurrent in addition, add in leakage, breaking switch and install, be equivalent to an electronic switch caused by voltage in parallel and again a normally opened contact relay by external other signal of telecommunication control in parallel at leak(age) test button two ends, simulation electric leakage process is equivalent to during their work, and original function is not affected, so this device contains overcurrent, electric leakage, superpressure, other instruction (temperature, air-sensitive, thermal infrared, the instruction of microcomputer etc. circuit signal) integrated protection cut-out function, deserve to be called the protection type disconnect that the cost performance of energy-conserving and environment-protective is high.
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 (8)
1. a low-power consumption single-phase multifunctional protective device, for being connected to phase line L
1with on zero line N, it is characterized in that: comprise overpressure protection unit, this overpressure protection unit drawn by trip switch (8), electric leakage induction coil (4), amplifier (6), electric leakage tripping coil (7), ultra-voltage connect circuit (2), resistance (R) forms; The input phase phase-connecting wire L respectively of described trip switch (8)
1with zero line N input interface, the output of trip switch (8) is connected to load (10) through after electric leakage induction coil (4); Described electric leakage induction coil (4) exports two ends and connects amplifier (6) input two ends, amplifier (6) exports two ends and connects electric leakage tripping coil (7) input two ends, and the electromagnetic and mechanical produced when electric leakage tripping coil (7) obtains electric energy can act on trip switch (8); Described ultra-voltage draws the zero line output connected circuit (2) one end and connect trip switch (8), other end contact resistance (R) output, and resistance (R) input is attached across the phase line rear end in electric leakage induction coil (4);
In non-ultra-voltage situation, ultra-voltage draws the voltage connected circuit (2) two ends terminal voltages and equal between L1 and N, be less than ultra-voltage and draw connection circuit (2) interior voltage setting value, ultra-voltage draws connection circuit (2) no current to be passed through, and this protective device keeps normal work, when voltage between L1 and N is equal to or greater than superpressure setting, ultra-voltage draws to be connected circuit (2) and senses the voltage signal and connecting of overflowing, the electric current of power supply L1 flows through trip switch (8) to be passed through in electric leakage induction coil (4), cross ultra-voltage to resistance (R) and draw connection circuit (2), power supply N line is returned to trip switch (8), visible ultra-voltage draws connects circuit (2) loop current single line in electric leakage induction coil (4), power supply is back to from outward, cause in electric leakage induction coil (4) and come and go current imbalance, come and go difference between current and be greater than electric leakage nominal value, the voltage that electric leakage induction coil (4) produces is greater than amplifier (6) threshold value, amplifier (6) input signal output voltage is poor, electric leakage tripping coil (7) obtains electric and produces magnetic force, trip switch (8) is pulled to turn off, load (10) dead electricity and being protected.
2. a kind of low-power consumption single-phase multifunctional protective device according to claim 1, is characterized in that: it is trigger tube DB3-DB6 tandem compound that described ultra-voltage draws connection circuit (2); Or voltage-stabiliser tube, Zener diode and controllable silicon combine; Or piezo-resistance and controllable silicon combine.
3. a kind of low-power consumption single-phase multifunctional protective device according to claim 1, it is characterized in that: comprise control inputs protected location further, this control inputs protected location is made up of trip switch (8), electric leakage induction coil (4), amplifier (6), electric leakage tripping coil (7), resistance (R), relay (1), and described control relay (1) is parallel to ultra-voltage and draws on connection circuit (2) loop;
When not having the operating voltage of input control relay (1), relay (1) does not work, during the operating voltage of input control relay (1), relay (1) normally opened contact Operating In Persistent Current Mode, the electric current of power supply L1 flows through trip switch (8) to be passed through in electric leakage induction coil (4), control relay (1) normally opened contact is crossed to resistance (R), power supply N line is returned to trip switch (8), visible relay (1) normally opened contact Operating In Persistent Current Mode loop current single line is in electric leakage induction coil (4), power supply is back to from outward, cause in electric leakage induction coil (4) and come and go current imbalance, come and go difference between current and be greater than electric leakage nominal value, the voltage that electric leakage induction coil (4) produces is greater than amplifier (6) threshold value, amplifier (6) input signal output voltage is poor, electric leakage tripping coil (7) obtains electric and produces magnetic force, pull trip switch, power remove, load (10) dead electricity and being protected.
4. a kind of low-power consumption single-phase multifunctional protective device according to claim 3, is characterized in that: described relay (1) is high sensitive micro normally opened contact relay.
5. a kind of low-power consumption single-phase multifunctional protective device according to claim 1, it is characterized in that: comprise leakage tests unit further, this leakage tests unit is made up of trip switch (8), electric leakage induction coil (4), amplifier (6), electric leakage tripping coil (7), resistance (R), leak(age) test button (3), and described leak(age) test button (3) is parallel to ultra-voltage and draws on connection circuit (2) loop;
Leak(age) test button (3) is connected, the electric current of power supply L1 flows through trip switch (8) to be passed through in electric leakage induction coil (4), leak(age) test button (3) is crossed to resistance (R), power supply N line is returned to trip switch (8), visible leak(age) test loop current single line is in electric leakage induction coil (4), power supply is back to from outward, cause in electric leakage induction coil (4) and come and go current imbalance, come and go difference between current and be greater than electric leakage nominal value, the voltage that electric leakage induction coil (4) produces is greater than amplifier (6) threshold value, amplifier (6) input signal output voltage is poor, electric leakage tripping coil (7) obtains electric and produces magnetic force, pull trip switch, power remove, creepage protection function is verified.
6. a kind of low-power consumption single-phase multifunctional protective device according to any one of claim 1,3,5; it is characterized in that: described resistance (R) is relay (1) input service; or ultra-voltage draws connection circuit (2) superpressure work; or the public current-limiting resistance of work connected by leak(age) test button (3); during round current imbalance in described electric leakage induction coil (4), its round difference between current calculates according to R resistance value.
7. a kind of low-power consumption single-phase multifunctional protective device according to claim 1, it is characterized in that: comprise over-current protecting unit further, this over-current protecting unit is made up of overcurrent coil (5), trip switch (8), connect the output of current-release coil (5) through the phase line front end in electric leakage induction coil (4), the input of current-release coil (5) connects the phase line output terminal of trip switch (8);
When L1 is reached by overcurrent tripping coil (5) to the electric current of load (10) or is greater than drop-away current value, magnetic force moving trip switch (8) tripping operation of generation, power cutoff.
8. a kind of low-power consumption single-phase multifunctional protective device according to claim 1, it is characterized in that: comprise residual current protective unit further, this residual current protective unit is made up of trip switch (8), electric leakage induction coil (4), amplifier (6), electric leakage tripping coil (7); Power supply L1 through electric leakage induction coil (4) through trip switch (8), to load circuit (10), then is returned by load circuit (10) and turns back to N line through electric leakage induction coil (4) to trip switch (8);
When A, nothing electric leakage, because coming and going current balance type in electric leakage induction coil (4), the induced voltage that electric leakage induction coil (4) produces is zero, amplifier (6) does not have voltage to input, output exports without driving voltage difference, electric leakage tripping coil (7) does not work because can not get voltage, and trip switch (8) keeps on-state;
B, electric leakage very little time, electric leakage induction coil (4) though in have unsymmetrical current, produce voltage less, amplifier (6) input gate limit value can not be reached, amplifier (6) output no-output voltage difference; Electric leakage tripping coil (7) does not work because can not get voltage, and trip switch (8) keeps on-state;
When C, electrical leakage are equal to or greater than nominal value, current imbalance is come and gone in electric leakage induction coil (4), the voltage that electric leakage induction coil (4) produces is equal to or greater than amplifier (6) threshold value and enters, amplifier (6) output output voltage is poor, electric leakage tripping coil (7) obtains electric and produces magnetic force moving trip switch (8) action, power cutoff.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510831265.0A CN105305377A (en) | 2015-07-06 | 2015-11-24 | Single-phase multifunctional protector with low power consumption |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510390174.8A CN105024336A (en) | 2015-07-06 | 2015-07-06 | Single-phase overcurrent, electric leakage, overvoltage and control protection device |
| CN2015103901748 | 2015-07-06 | ||
| CN201510831265.0A CN105305377A (en) | 2015-07-06 | 2015-11-24 | Single-phase multifunctional protector with low power consumption |
Publications (1)
| Publication Number | Publication Date |
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| CN105305377A true CN105305377A (en) | 2016-02-03 |
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|---|---|---|---|
| CN201510390174.8A Pending CN105024336A (en) | 2015-07-06 | 2015-07-06 | Single-phase overcurrent, electric leakage, overvoltage and control protection device |
| CN201520945531.8U Expired - Fee Related CN205335814U (en) | 2015-07-06 | 2015-11-24 | Single -phase multifunctional protector device of low -power consumption |
| CN201510831265.0A Pending CN105305377A (en) | 2015-07-06 | 2015-11-24 | Single-phase multifunctional protector with low power consumption |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201510390174.8A Pending CN105024336A (en) | 2015-07-06 | 2015-07-06 | Single-phase overcurrent, electric leakage, overvoltage and control protection device |
| CN201520945531.8U Expired - Fee Related CN205335814U (en) | 2015-07-06 | 2015-11-24 | Single -phase multifunctional protector device of low -power consumption |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN105024336A (en) * | 2015-07-06 | 2015-11-04 | 钟兴明 | Single-phase overcurrent, electric leakage, overvoltage and control protection device |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201781263U (en) * | 2010-05-10 | 2011-03-30 | 厦门振泰成科技有限公司 | Electric-shock protection wall overcurrent leakage protection circuit of wall switch |
| US20110286134A1 (en) * | 2010-05-19 | 2011-11-24 | Schneider Electric USA, Inc. | Earth leakage detection module with robust transient suppression |
| CN202142839U (en) * | 2011-06-07 | 2012-02-08 | 天津二十冶建设有限公司 | Voltage limited electric leakage protection switch |
| CN202513544U (en) * | 2011-11-10 | 2012-10-31 | 江苏省电力公司射阳县供电公司 | Over-voltage leakage protector |
| CN205335814U (en) * | 2015-07-06 | 2016-06-22 | 钟兴明 | Single -phase multifunctional protector device of low -power consumption |
-
2015
- 2015-07-06 CN CN201510390174.8A patent/CN105024336A/en active Pending
- 2015-11-24 CN CN201520945531.8U patent/CN205335814U/en not_active Expired - Fee Related
- 2015-11-24 CN CN201510831265.0A patent/CN105305377A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201781263U (en) * | 2010-05-10 | 2011-03-30 | 厦门振泰成科技有限公司 | Electric-shock protection wall overcurrent leakage protection circuit of wall switch |
| US20110286134A1 (en) * | 2010-05-19 | 2011-11-24 | Schneider Electric USA, Inc. | Earth leakage detection module with robust transient suppression |
| CN202142839U (en) * | 2011-06-07 | 2012-02-08 | 天津二十冶建设有限公司 | Voltage limited electric leakage protection switch |
| CN202513544U (en) * | 2011-11-10 | 2012-10-31 | 江苏省电力公司射阳县供电公司 | Over-voltage leakage protector |
| CN205335814U (en) * | 2015-07-06 | 2016-06-22 | 钟兴明 | Single -phase multifunctional protector device of low -power consumption |
Also Published As
| Publication number | Publication date |
|---|---|
| CN205335814U (en) | 2016-06-22 |
| CN105024336A (en) | 2015-11-04 |
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