CN205335814U - Single -phase multifunctional protector device of low -power consumption - Google Patents
Single -phase multifunctional protector device of low -power consumption Download PDFInfo
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- CN205335814U CN205335814U CN201520945531.8U CN201520945531U CN205335814U CN 205335814 U CN205335814 U CN 205335814U CN 201520945531 U CN201520945531 U CN 201520945531U CN 205335814 U CN205335814 U CN 205335814U
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Abstract
The utility model discloses a single -phase multifunctional protector device of low -power consumption, its control input protected location that has integrateed, overpressure protection unit, earth -leakage detection unit, over -current protection unit, earth leakage protection unit, form one kind single -phasely overflow, electric leakage, superpressure, controlled protection device, protection circuit electrical apparatus that can be better, the protection switch tripping operation in other signals sources, very easily market -oriented, in addition, the device simple structure, the fault rate is very low, and very power saving, can satisfy and not have the energy -concerving and environment -protective target of waiting for the consumption.
Description
Technical field
This utility model relates to electric prospection art, refers in particular to a kind of low-power consumption single-phase multifunctional protection device gathered and crossed stream, 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, referred to herein as supervoltage。Owing to electrical equipment kind increases day by day, people's power consumption rate is consequently increased, 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 higher than the conveying of 220V+20% voltage；The private also having building site is drawn and is disorderly connect, and a lot of 380V pressure-wires are not indicated again, cause that the electrical appliance of 220V power supply is connected on 380V circuit, and supervoltage uses, and suffers heavy losses。Only leaking electricity on the market at present, overcurrent protective switch, this switch is fine, and when electric leakage is equal to or more than setting value, switch open circuit is tripped；Switch open circuit tripping operation when electric current equals to or more than stream setting value, and wait for period and do not have power consumption, is the significantly high energy saving environmental protection product of cost performance, but supervoltage is inoperative。There is the automatically reset device of a kind of over voltage protection on the market, after supervoltage disappears, return the product of turn on automatically during 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 needing one group of power supply to power, the fault rate of itself is higher; power consumption is bigger; 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。This device is also had to encounter under line voltage superpressure fluctuation status, the connection of this exhaust, electrical appliance is also had injury, additionally this device is all the time without departing from supervoltage, too high once supervoltage, and the infringement of this device itself is also possible to。
Utility model content
In view of this; this utility model is for the disappearance of prior art existence; its main purpose is to provide low-power consumption single-phase multifunctional protection device; it not only meets without the energy-conserving and environment-protective target waiting for power consumption; but also contained stream, electric leakage, superpressure, other input control instruction (temperature, air-sensitive, thermal infrared, microcomputer etc. circuit signal instruction) integrated protection cut-out function, deserve to be called the protection type disconnect switch that the cost performance of energy-conserving and environment-protective is high。
For achieving the above object, this utility model adopts such as purgation technical scheme:
A kind of low-power consumption single-phase multifunctional protection device, is used for being connected to phase line L1With on zero line N, including controlling input protected location, this control input protected location is made up of trip switch, electric leakage induction coil, amplifier, electric leakage tripping coil, resistance R, relay,
The input of described trip switch is phase phase-connecting wire L respectively1With zero line N input interface, the outfan of trip switch is connected to load circuit after electric leakage induction coil；Described electric leakage induction coil output two ends connect amplifier input two ends, and amplifier output two ends connect electric leakage tripping coil input two ends, and the electromagnetic and mechanical that electric leakage tripping coil produces when obtaining electric energy can act on trip switch；Described relay one end connects the zero line outfan of trip switch, and the other end connects resistance R outfan, and resistance R input is attached across the phase line rear end in electric leakage induction coil；
When not inputting the running voltage controlling relay, relay does not work；When input controls the running voltage of 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 open contact is crossed to resistance, 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 it is back to from outward, cause in electric leakage induction coil and come and go current imbalance, come and go difference between current and more than electric leakage nominal value, the voltage that electric leakage induction coil produces is more 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 circuit dead electricity and protected。
As a kind of preferred version, described relay is high sensitive micro normally opened contact relay。
As a kind of preferred version, farther including 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, supervoltage；The input of described trip switch is phase phase-connecting wire L respectively1With zero line N input interface, the outfan of trip switch is connected to load circuit after electric leakage induction coil；Described electric leakage induction coil output two ends connect amplifier input two ends, and amplifier output two ends connect electric leakage tripping coil input two ends, and the electromagnetic and mechanical that electric leakage tripping coil produces when obtaining electric energy can act on trip switch；Described supervoltage draws connection circuit in parallel in controlling on relay circuit；
In non-supervoltage situation, supervoltage draws connects circuit two ends terminal voltage equal to the voltage between L1 and N, draws voltage setting value in connection circuit less than supervoltage, and supervoltage draws connection circuit no current to be passed through, and this protection device keeps normal operation；When voltage between L1 and N sets equal to or more than superpressure, supervoltage draws connection circuit inductance and connects to overflowing voltage signal, the electric current of power supply L1 flows through trip switch to be passed through in electric leakage induction coil, cross supervoltage to resistance R and draw connection circuit, power supply N line is returned to trip switch, visible supervoltage draws connection circuit loop electric current single line in electric leakage induction coil, power supply it is back to from outward, cause in electric leakage induction coil and come and go current imbalance, come and go difference between current and more than electric leakage nominal value, the voltage that electric leakage induction coil produces is more 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 circuit dead electricity and protected。
As a kind of preferred version, it is trigger tube DB3-DB6 tandem compound that described supervoltage draws connection circuit；Or stabilivolt, Zener diode and controllable silicon combination；Or varistor and controllable silicon combination。
As a kind of preferred version, farther include leakage tests unit, 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 supervoltage 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 it is back to from outward, cause in electric leakage induction coil and come and go current imbalance, come and go difference between current and more than electric leakage nominal value, the voltage that electric leakage induction coil produces is more 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 the public current-limiting resistance that relay input service or supervoltage draw connection 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 computing the resistor value according to resistance R。
As a kind of preferred version; farther include over-current protecting unit; this over-current protecting unit is made up of streamline circle, trip switch excessively, connects the outfan 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 the electric current of overcurrent tripping coil to load circuit or during more than drop-away current value, the magnetic force moving trip switch tripping operation of generation, power cutoff。
As a kind of preferred version, farther including residual current protective unit, 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, to load circuit, then is returned to N line again through electric leakage induction coil to trip switch by load circuit return through 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, outfan exports without driving voltage difference, and electric leakage tripping coil does not work because can not get voltage, and trip switch remains turned on；
B, when leaking electricity only small, though there being out-of-balance current in electric leakage induction coil, but the voltage produced is less, it is impossible to reaching amplifier input gate limit value, amplifier out is poor without output voltage。Electric leakage tripping coil does not work because can not get voltage, and trip switch remains turned on;
When C, electrical leakage are equal to or more than nominal value, current imbalance is come and gone in electric leakage induction coil, the voltage that electric leakage induction coil produces enters equal to or more than amplifier threshold value, amplifier out output voltage is poor, electric leakage tripping coil obtains electric and produces magnetic force moving trip switch action, power cutoff。
This utility model compared with prior art has clear advantage and beneficial effect, specifically, as shown from the above technical solution:
One, input defencive function is controlled: by trip switch, electric leakage induction coil, amplifier, electric leakage tripping coil, resistance, relay composition control input protected location。When not inputting the running voltage controlling relay, relay does not work, without any reaction (similar leak(age) test button is not pressed)；When input controls the running voltage of relay, relay normally open contact Operating In Persistent Current Mode (connecting just as leak(age) test button), the electric current of power supply L1 flow through trip switch to streamline circle to electric leakage induction coil in pass through, relay normally open contact is crossed to resistance, 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 it is back to from outward, cause in electric leakage induction coil and come and go current imbalance, come and go difference between current (computing the resistor value according to resistance R) and more than electric leakage nominal value, the voltage that electric leakage induction coil produces is more 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 circuit dead electricity and protected。
Two, multi-functional: this utility model is except input protected location; also it is integrated with overpressure protection unit, controls 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 protect circuit appliance; the protection switch trip in other signal source, the very easily marketization。
Three, energy-conservation: this device be through ruminating over, contrasting, a supervoltage broken circuit protecting equipment being approximately idle that EXPERIMENTAL DESIGN goes out; this apparatus structure is simple; so fault rate is very low; and very power saving; maximum wait for power consumption 0.022W; year, maximum power consumption of waiting for was when 190W/, was equivalent to 0.2 degree, can meet without the energy-conserving and environment-protective target waiting for power consumption。It is 2A that the action expiration and inspiration of device element repeats to allow current value, and action 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 protected mode, such as temperature control instruction, fire-fighting instruction is (as smog, Thermal Infra-Red radiates) delay time control instruction, microcomputer instruction etc., when these instructions do not arrive, the power consumption of waiting for of relay is equal to 0, also comply with energy-conserving and environment-protective requirement, additionally this device is to cross stream, add in leakage, breaking switch and install, be equivalent to electrical switch that parallel connection one caused by voltage and again a normally opened contact relay by other signal of telecommunication external control in parallel at leak(age) test button two ends, simulation electric leakage process is equivalent to during they work, and original function is not affected, so this device contained stream, electric leakage, superpressure, other instruction (temperature, air-sensitive, thermal infrared, microcomputer etc. circuit signal instruction) integrated protection cut-out function, deserve to be called the protection type disconnect switch that the cost performance of energy-conserving and environment-protective is high。
For more clearly setting forth architectural feature of the present utility model and effect, below in conjunction with accompanying drawing and specific embodiment, this utility model is described in detail。
Accompanying drawing explanation
Fig. 1 is the structural representation of the embodiment of this utility model；
Fig. 2 is the current direction figure of the embodiment overpressure protection unit of this utility model；
Fig. 3 is the current direction figure of the embodiment control input protected location of this utility model；
Fig. 4 is the current direction figure of the embodiment leakage tests unit of this utility model；
Fig. 5 is the current direction figure of the embodiment over-current protecting unit of this utility model and residual current protective unit。
Accompanying drawing identifier declaration:
(1), relay (2), supervoltage draw connection circuit
(3), leak(age) test button (4), electric leakage induction coil
(5), overcurrent tripping coil (6), amplifier
(7), electric leakage tripping coil (8), trip switch
(9), control signal input voltage (10), load circuit (electrical equipment)。
Detailed description of the invention
Refer to shown in Fig. 1; that show the concrete structure of the preferred embodiment of this utility model; be a kind of gathered cross stream, electric leakage, superpressure, control protection low-power consumption single-phase multifunctional protection device, its structure includes relay (1), supervoltage draw connection circuit (2), leak(age) test button (3), leak electricity induction coil (4), overcurrent tripping coil (5), amplifier (6), leak electricity 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 supervoltage and draw connection circuit (2) two ends, loop；Described supervoltage 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 connects resistance (R) outfan, 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 this utility model device, the outfan 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 this utility model device, meets L1 in this utility model device accompanying drawing；Described leak(age) test button (3) other end is attached across the zero line front end of electric leakage induction coil (4), it is connected to again the zero line outfan of trip switch (8), the zero line input of trip switch (8) connects the zero line input interface of this utility model device, meets N in this utility model device accompanying drawing；Zero line rear end through electric leakage induction coil (4) connects this utility model device zero line output interface；Described electric leakage induction coil (4) output two ends connect amplifier (6) input two ends, amplifier (6) output two ends connect 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 this utility model device output interface two ends。
Preferably, described supervoltage draws connection circuit (2) is trigger tube DB3-DB6 tandem compound；Or stabilivolt, Zener diode and controllable silicon combination；Or varistor and controllable silicon combination。Described relay (1) is high sensitive micro normally opened contact relay。Described resistance (R) draws the public current-limiting resistance connecting the work of circuit (2) superpressure or leak(age) test button (3) connection work for relay (1) input service or supervoltage, during round current imbalance in described electric leakage induction coil (4), its round difference between current computing the resistor value according to resistance R。Described control protection input voltage (9) is require to set according to boil on the nape opposite the mouth input circuit。Described applied voltage (10) is that the change according to relevant parameter adapts to various two-wire system AC power circuits use voltage。
Wherein, as in figure 2 it is shown, this device has overpressure protection function。This utility model 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), supervoltage。Supervoltage draws connection circuit (2) and is parallel to leak(age) test button (3) two ends, in non-supervoltage situation, supervoltage draws connects circuit (2) two ends terminal voltage equal to the voltage between L1 and N, connection circuit (2) interior voltage setting value is drawn (if superpressure value is 260V less than supervoltage, voltage is lower than 260V), supervoltage draws connection circuit (2) no current to be passed through, and similar leak(age) test button (3) off-state, this utility model device keeps normal operation；When voltage between L1 and N sets equal to or more than superpressure, (equal to or more than 260V) supervoltage draws connection circuit (2) and senses and overflow voltage signal and connect, connecting just as leak(age) test button (3), the electric current of power supply L1 flow through trip switch (8) to streamline circle (5) pass through in electric leakage induction coil (4), cross supervoltage to resistance (R) and draw connection circuit (2), power supply N line is returned to trip switch (8), visible supervoltage draws connection circuit (2) loop current single line in electric leakage induction coil (4), power supply it is back to from outward, cause and in electric leakage induction coil (4), come and go current imbalance, come and go difference between current (computing the resistor value according to resistance R) and more than electric leakage nominal value, the voltage that electric leakage induction coil (4) produces is more 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 circuit (10) dead electricity and protected。
As it is shown on figure 3, this device has control input defencive function further。This utility model is by trip switch (8), electric leakage induction coil (4), amplifier (6), electric leakage tripping coil (7), resistance (R), relay (1) composition control input protected location。
The normally opened contact two ends controlling relay (1) are parallel to leak(age) test switch ends。Also it is be parallel to supervoltage to draw on connection circuit (2) loop, it does not have when input controls the running voltage of relay (1), relay does not work, without any reaction (similar leak(age) test button is not pressed)；When input controls the running voltage of relay (1), relay (1) normally opened contact Operating In Persistent Current Mode (connecting just as leak(age) test button), the electric current of power supply L1 flow through trip switch (8) to streamline circle (5) pass 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 it is back to from outward, cause and in electric leakage induction coil (4), come and go current imbalance, come and go difference between current (calculating according to R resistance value) and more than electric leakage nominal value, the voltage that electric leakage induction coil (4) produces is more 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 circuit (10) dead electricity and protected。
As shown in Figure 4, this device has leak(age) test function further。This utility model is formed 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 supervoltage and draws on connection circuit (2) loop, button (3) is connected, the electric current of power supply L1 flow through trip switch (8) to streamline circle (5) pass 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 it is back to from outward, cause and in electric leakage induction coil (4), come and go current imbalance, come and go difference between current (calculating according to R resistance value) and more than electric leakage nominal value, the voltage that electric leakage induction coil (4) produces is more 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 it is shown in figure 5, this device has overcurrent protection function further。This utility model is formed over-current protecting unit by streamline circle (5), trip switch (8) excessively; when L1 is reached by the electric current of overcurrent tripping coil (5) to load circuit (10) or during more than drop-away current value; magnetic force moving trip switch (8) tripping operation produced, power cutoff。
As it is shown in figure 5, this device has creepage protection function further。This utility model is formed 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 is through trip switch (8) traverse electric leakage induction coil (4); to load circuit (10), then returned to N line again through electric leakage induction coil (4) to trip switch (8) by load circuit (10) return。
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, outfan exports without driving voltage difference, electric leakage tripping coil (7) does not work because can not get voltage, and trip switch (8) remains turned on；
B, when leaking electricity only small, electric leakage induction coil (4) though in have out-of-balance current, but the voltage produced is less, it is impossible to reaching amplifier (6) input gate limit value, amplifier (6) outfan is poor without output voltage。Electric leakage tripping coil (7) does not work because can not get voltage, and trip switch (8) remains turned on;
When C, electrical leakage are equal to or more than nominal value, current imbalance is come and gone in electric leakage induction coil (4), the voltage that electric leakage induction coil (4) produces enters equal to or more than amplifier (6) threshold value, amplifier (6) outfan 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 utility model is in that; it is integrated with overpressure protection unit, controls input 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 protect circuit appliance; the protection switch trip in other signal source, the very easily marketization。
In addition; this device be through ruminating over, contrasting, a supervoltage broken circuit protecting equipment being approximately idle that EXPERIMENTAL DESIGN goes out; this apparatus structure is simple; so fault rate is very low; and very power saving, the maximum power consumption 0.022W that waits for, year, maximum power consumption of waiting for was when 190W/; be equivalent to 0.2 degree, can meet without the energy-conserving and environment-protective target waiting for power consumption。It is 2A that the action expiration and inspiration of device element repeats to allow current value, and action 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 protected mode, such as temperature control instruction, fire-fighting instruction is (as smog, Thermal Infra-Red radiates) delay time control instruction, microcomputer instruction etc., when these instructions do not arrive, the power consumption of waiting for of relay is equal to 0, also comply with energy-conserving and environment-protective requirement, additionally this device is to cross stream, add in leakage, breaking switch and install, be equivalent to electrical switch that parallel connection one caused by voltage and again a normally opened contact relay by other signal of telecommunication external control in parallel at leak(age) test button two ends, simulation electric leakage process is equivalent to during they work, and original function is not affected, so this device contained stream, electric leakage, superpressure, other instruction (temperature, air-sensitive, thermal infrared, microcomputer etc. circuit signal instruction) integrated protection cut-out function, deserve to be called the protection type disconnect switch that the cost performance of energy-conserving and environment-protective is high。
The above, it it is only preferred embodiment of the present utility model, not technical scope of the present utility model is imposed any restrictions, therefore every any trickle amendment, equivalent variations and modification above example made according to technical spirit of the present utility model, all still fall within the scope of technical solutions of the utility model。
Claims (8)
1. a low-power consumption single-phase multifunctional protection device, is used for being connected to phase line L1With on zero line N; it is characterized in that: include controlling input protected location; this control input 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)
The input of described trip switch (8) is phase phase-connecting wire L respectively1With zero line N input interface, the outfan of trip switch (8) is connected to load circuit (10) after electric leakage induction coil (4)；Described electric leakage induction coil (4) output two ends connect amplifier (6) input two ends, amplifier (6) output two ends connect 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 relay (1) one end connects the zero line outfan of trip switch (8), and the other end connects resistance (R) outfan, and resistance (R) input is attached across the phase line rear end in electric leakage induction coil (4)；
When not inputting the running voltage controlling relay (1), relay (1) does not work；When input controls the running voltage of 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 it is back to from outward, cause and in electric leakage induction coil (4), come and go current imbalance, come and go difference between current and more than electric leakage nominal value, the voltage that electric leakage induction coil (4) produces is more 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 circuit (10) dead electricity and protected。
2. a kind of low-power consumption single-phase multifunctional protection device according to claim 1, it is characterised in that: described relay (1) is high sensitive micro normally opened contact relay。
3. a kind of low-power consumption single-phase multifunctional protection device according to claim 1; it is characterized in that: farther include overpressure protection unit, this overpressure protection unit is drawn connection circuit (2) formed by trip switch (8), electric leakage induction coil (4), amplifier (6), electric leakage tripping coil (7), resistance (R), supervoltage；
The input of described trip switch (8) is phase phase-connecting wire L respectively1With zero line N input interface, the outfan of trip switch (8) is connected to load circuit (10) after electric leakage induction coil (4)；Described electric leakage induction coil (4) output two ends connect amplifier (6) input two ends, amplifier (6) output two ends connect 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 supervoltage draws connection circuit (2) and is parallel on control relay (1) loop；
In non-supervoltage situation, supervoltage draws connects circuit (2) two ends terminal voltage equal to the voltage between L1 and N, draws connection circuit (2) interior voltage setting value less than supervoltage, and supervoltage draws connection circuit (2) no current to be passed through, and this protection device keeps normal operation；When voltage between L1 and N sets equal to or more than superpressure, supervoltage draws connection circuit (2) and senses and overflow voltage signal and connect, the electric current of power supply L1 flows through trip switch (8) to be passed through in electric leakage induction coil (4), cross supervoltage to resistance (R) and draw connection circuit (2), power supply N line is returned to trip switch (8), visible supervoltage draws connection circuit (2) loop current single line in electric leakage induction coil (4), power supply it is back to from outward, cause and in electric leakage induction coil (4), come and go current imbalance, come and go difference between current and more than electric leakage nominal value, the voltage that electric leakage induction coil (4) produces is more 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 circuit (10) dead electricity and protected。
4. a kind of low-power consumption single-phase multifunctional protection device according to claim 3, it is characterised in that: it is trigger tube DB3-DB6 tandem compound that described supervoltage draws connection circuit (2)；Or stabilivolt, Zener diode and controllable silicon combination；Or varistor and controllable silicon combination。
5. a kind of low-power consumption single-phase multifunctional protection device according to claim 1; it is characterized in that: farther include leakage tests unit; 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 supervoltage 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 it is back to from outward, cause and in electric leakage induction coil (4), come and go current imbalance, come and go difference between current and more than electric leakage nominal value, the voltage that electric leakage induction coil (4) produces is more 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 protection device according to claim 1 or 3 or 5; it is characterized in that: described resistance (R) draws the public current-limiting resistance connecting the work of circuit (2) superpressure or leak(age) test button (3) connection work for relay (1) input service or supervoltage; during round current imbalance in described electric leakage induction coil (4), its round difference between current computing the resistor value according to resistance (R)。
7. a kind of low-power consumption single-phase multifunctional protection device according to claim 1; it is characterized in that: farther include over-current protecting unit; this over-current protecting unit is made up of streamline circle (5), trip switch (8) excessively; connect the outfan 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 the electric current of overcurrent tripping coil (5) to load circuit (10) or during more 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 protection device according to claim 1; it is characterized in that: farther include residual current protective unit, 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), to load circuit (10), then is returned to N line again through electric leakage induction coil (4) to trip switch (8) by load circuit (10) return through 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, outfan exports without driving voltage difference, electric leakage tripping coil (7) does not work because can not get voltage, and trip switch (8) remains turned on；
B, when leaking electricity only small, electric leakage induction coil (4) though in have out-of-balance current, but the voltage produced is less, it is impossible to reaching amplifier (6) input gate limit value, amplifier (6) outfan is poor without output voltage；Electric leakage tripping coil (7) does not work because can not get voltage, and trip switch (8) remains turned on;
When C, electrical leakage are equal to or more than nominal value, current imbalance is come and gone in electric leakage induction coil (4), the voltage that electric leakage induction coil (4) produces enters equal to or more than amplifier (6) threshold value, amplifier (6) outfan output voltage is poor, electric leakage tripping coil (7) obtains electric and produces magnetic force moving trip switch (8) action, power cutoff。
Applications Claiming Priority (2)
| 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 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205335814U true CN205335814U (en) | 2016-06-22 |
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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 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201510831265.0A Pending CN105305377A (en) | 2015-07-06 | 2015-11-24 | Single-phase multifunctional protector with low power consumption |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105305377A (en) * | 2015-07-06 | 2016-02-03 | 钟兴明 | Single-phase multifunctional protector with low power consumption |
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| 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 |
| US8400744B2 (en) * | 2010-05-19 | 2013-03-19 | 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 |
| CN105024336A (en) * | 2015-07-06 | 2015-11-04 | 钟兴明 | Single-phase overcurrent, electric leakage, overvoltage and control protection device |
-
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
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105305377A (en) * | 2015-07-06 | 2016-02-03 | 钟兴明 | Single-phase multifunctional protector with low power consumption |
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|---|---|
| CN105305377A (en) | 2016-02-03 |
| CN105024336A (en) | 2015-11-04 |
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