CN2733700Y - A protector for safety power utilization - Google Patents
A protector for safety power utilization Download PDFInfo
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- CN2733700Y CN2733700Y CN 200420045016 CN200420045016U CN2733700Y CN 2733700 Y CN2733700 Y CN 2733700Y CN 200420045016 CN200420045016 CN 200420045016 CN 200420045016 U CN200420045016 U CN 200420045016U CN 2733700 Y CN2733700 Y CN 2733700Y
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Abstract
The utility model discloses a protector for safety power utilization. The technical proposal is that the protector for safety power utilizatio comprises a power transferring and adjusting voltage stabilizing circuit, a switch servo control execution circuit, a leak monitor and control output circuit, a short circuit monitor and control output circuit, an overload monitor and control output circuit, an overpressure monitor and control output circuit, an under voltage monitor and control output circuit, a phase faulty monitor and control output circuit, a leak/ short circuit diagnostic control output circuit, an operational amplifier IC door reference voltage circuit and a status display and alarm circuit. The power transferring and adjusting voltage stabilizing circuit supplies required working voltage to each control circuit, the operational amplifier IC door reference voltage circuit supplies pure direct current stable voltage to the operational amplifier IC reference door voltage, and the switch servo control execution circuit drives the switching of a 2K-AC switch of a main line alternating current power supply. The utility model overcomes the insufficiency of the prior art and provides the protector for safety power utilization having the advantages of comprehensive protective functions, fault automatic recognizing and diagnosis prevention, displaying function, alarming function, etc.
Description
[technical field]
The utility model relates to a kind of power protector, particularly relates to the safety electricity consumption protector that a kind of power domain uses.
[background technology]
In exchanging the single phasing transmission line, the terminal power utilization network spreads all over huge numbers of families.Owing to also lack the protector advanced, highly reliable, perfect in shape and function of being correlated with in terminal use's transmission line, the accident of transmission line overload and short circuit initiation fire, electric leakage even people's injures and deaths, and overvoltage, under-voltage, induction lightening seal in and damage taking place often with electrification of power consumption equipment.These potentialities, sudden hard to guard against hidden danger have become a harm greatly of human security electricity consumption.Drop into protector such as the fuse that protection is used at present, leakage switch, disconnect, though played certain effect, but also function is limited, protect not comprehensive, less reliable, it mainly shows as: fusing function is single, be serially connected with in the electricity consumption line loop, when flowing through, rated current can generate heat, mutation takes place in cold and hot process repeatedly causes the terminals contact resistance to strengthen, same afterwards rated current produces high heat and causes non-fault and fuse when flowing through, people often adopt the increasing specification to solve, and bring hidden danger because the specification power of a test is improper equally for safety utilization of electric power; The leakage switch function singleness, when electric leakage takes place in charged line, zero sequence current mutual inductor produces unbalance electric current, detect electric leakage signal and trigger controllable silicon solenoid generation magnetic pushing machine tool device disjunction power supply, the fulcrum wearing and tearing in the generation sharp pounding is easy to cause during separating brake in the device cause parameter drift or malfunctioning, because it is poor to adopt detection to handle simple anti-interference, regular meeting's error changing of the relative positions does not have the malfunction indication, to the same potential risk of safety utilization of electric power behind the separating brake; Disconnect mechanical type control structure passive protection pattern; its inner metal device produced hot mutation to eccentric displacement disjunction power supply when charged line was short-circuited; in the transmission operation network; numerous terminal network current strength do not reach its required condition; fault can't play a protective role when taking place; again when reaching its short circuit condition disjunction and thread off; stateless shows behind the separating brake; can not discern the fault that the load circuit takes place; if heavy full lock will produce the great electrification of using, equally to safety utilization of electric power also potential risk.
The utility model has carried out useful improvement in order to overcome above shortcoming.
[utility model content]
The purpose of this utility model is to overcome above-mentioned deficiency, and a kind of safe and reliable, comprehensive safety utilization of electric power watch-dog of safeguard function is provided.Adopt leading active protection mode, in transmission line for the burst overload and short circuit, electric leakage, overvoltage and under-voltage, induction lightening seals in when constituting destruction and can discern automatically, automatically enter protection, also has automatic fault diagnosis simultaneously, the power supply of input and load electricity consumption line security state detected earlier differentiate when if the power supply of input is dangerous, when loaded line has fault, no matter be hand-reset or refusal connection without exception automatically, and can make malfunction demonstration and alarm, just can manual or automatic energized after only fixing a breakdown, thus provide more convenient for safety utilization of electric power, safety, reliable strong guarantee.
In order to solve the technical problem of above-mentioned existence, the utility model adopts following technical proposal:
A kind of safety electricity consumption protector is characterized in that comprising that power conversion adjustment voltage stabilizing circuit, switch SERVO CONTROL executive circuit, leakage current detect controlling output circuit, short circuit monitoring and controlling output circuit, overload monitoring and controlling output circuit, overvoltage monitoring and controlling output circuit, under-voltage monitoring and controlling output circuit, misphase monitoring and controlling output circuit, electric leakage/short circuit diagnosis control output circuit, amplifier IC door reference voltage circuit, state show and circuit for alarming;
Power conversion is adjusted voltage stabilizing circuit and is supplied with each control circuit work required voltage;
Amplifier IC door reference voltage circuit provides pure direct-flow steady voltage to supply with amplifier IC benchmark gate voltage;
Switch SERVO CONTROL executive circuit drives the switching of main line AC power 2K-AC switch;
The input of leakage current detect controlling output circuit is from the main line AC power sampling of input, and output connects the input of switch SERVO CONTROL executive circuit, and output is connected to state simultaneously and shows and circuit for alarming;
The short circuit monitoring and controlling output circuit is from the main line AC power sampling of input, and output connects the input of switch SERVO CONTROL executive circuit, and output is connected to state simultaneously and shows and circuit for alarming;
The overload monitoring and controlling output circuit is from the sampling of short circuit monitoring and controlling output circuit output, and output connects the input of switch SERVO CONTROL executive circuit, and output is connected to state simultaneously and shows and circuit for alarming;
The overvoltage monitoring and controlling output circuit is from the main line AC power sampling of input, and output connects the input of switch SERVO CONTROL executive circuit, and output is connected to state simultaneously and shows and circuit for alarming;
Under-voltage monitoring and controlling output circuit is from the sampling of overvoltage monitoring and controlling output circuit output, and output connects the input of switch SERVO CONTROL executive circuit, and output is connected to state simultaneously and shows and circuit for alarming;
The misphase monitoring and controlling output circuit is from the main line AC power sampling of input, and output connects the input of switch SERVO CONTROL executive circuit, and output is connected to state simultaneously and shows and circuit for alarming;
Electric leakage/short circuit diagnosis control output circuit is from the main line AC power sampling of output, and input connects under-voltage monitoring and controlling output circuit, and output connects the input of switch SERVO CONTROL executive circuit, and output is connected to state simultaneously and shows and circuit for alarming;
The input of state demonstration and circuit for alarming is connected to the output of switch SERVO CONTROL executive circuit, and the input of state demonstration and circuit for alarming also is connected to the main line AC power of output.
Aforesaid a kind of safety electricity consumption protector is characterized in that switch SERVO CONTROL executive circuit is by triode 2Q
1, 2Q
2, 2Q
3, resistance 2R
1, 2R
2, electric capacity 2C
1, 2C
2, 2C
3, diode 2D
1, 2D
2, 2D
3, 2D
4, 2D
5, relay 2JK
1, 2JK
2, sensitive switch 2K
1, electromagnetically operated valve 2ECS, bidirectional switch 2K-AC connects to form.
Aforesaid a kind of safety electricity consumption protector is characterized in that state demonstration and circuit for alarming are by light-emitting diode 11E
1, 11E
2, 11E
3, 11E
4, 11E
5, 11E
6, luminous neon lamp 11E
7, resistance 11R
1, 11R
2, 11R
3, 11R
4, 11R
6, 11R
6, electric capacity 11C
1, 11C
2, diode 11D
1, triode 11Q
1, 11Q
2, buzzer 11SP, speech IC IC
7Connect to form.
Aforesaid a kind of safety electricity consumption protector is characterized in that the leakage current detect controlling output circuit is by zero sequence current mutual inductor 3B
1, diode 3D
1, 3D
2, 3D
3, 3D
4, electric capacity 3C
1, 3C
2, 3C
3, resistance 3R
1, 3R
2, 3R
3, 3R
4, 3R
5, 3R
6, key switch 3T
1, 3T
2, the amplifier integrated circuit (IC)
13rd, 4 connect to form.
Aforesaid a kind of safety electricity consumption protector is characterized in that described short circuit monitoring and controlling output circuit is by current transformer 4B
1, rectifier 4DZ, electric capacity 4C
1, 4C
2, 4C
3, 4C
4, resistance 4R
1, 4R
2, 4R
3, 4R
4, 4R
5, diode 4D
1, 4D
2, 4D
3, 4D
4, 4D
5, 4D
6, the amplifier integrated circuit (IC)
11st, 2 connect to form.
Aforesaid a kind of safety electricity consumption protector is characterized in that described overload monitoring and controlling output circuit is by diode 5D
1, 5D
2, 5D
3, resistance 5R
1, 5R
2, 5R
3, 5R
4, 5R
5, electric capacity 5C
1, 5C
2, 5C
3The amplifier integrated circuit (IC)
21st, 2 connect to form.
Aforesaid a kind of safety electricity consumption protector is characterized in that described overvoltage monitoring and controlling output circuit is by resistance 6R
1, 6R
2, 6R
3, 6R
4, 6R
5, 6R
6, 6R
7, 6R
8, electric capacity 6C
1, 6C
2, 6C
3, 6C
4, diode 6D
1, 6D
2, 6D
3, 6D
4, 6D
5, the amplifier integrated circuit (IC)
31st, 2, photoelectrical coupler IC
5Connect to form.
Aforesaid a kind of safety electricity consumption protector is characterized in that described under-voltage monitoring and controlling output circuit is by resistance 7R
1, 7R
2, 7R
3, 7R
4, 7R
5, electric capacity 7C
1, 7C
2, diode 7D
1, 7D
2, 7D
3, 7D
4, 7D
5, the amplifier integrated circuit (IC)
33rd, 4 connect to form.
Aforesaid a kind of safety electricity consumption protector is characterized in that described misphase monitoring and controlling output circuit is by resistance 8R
1, 8R
2, 8R
3, electric capacity 8C
1, 8C
2, diode 8D
1, 8D
2The four high guaily unit integrated circuit (IC)
2The 3rd, photoelectrical coupler IC
6Connect to form.
Aforesaid a kind of safety electricity consumption protector is characterized in that electric leakage and short circuit diagnosis control output circuit are by 9R
1, 9R
2, 9R
3, 9R
4, 9R
5, 9R
6, 9R
7, 9R
8, 9R
9, 9R
10, 9R
11, 9R
12, 9R
13, 9R
14, 9R
15, 9R
16, 9R
17, electric capacity 9C
1, 9C
2, 9C
3, 9C
4, 9C
5, 9C
6, 9C
7, 9C
8, diode 9D
1, 9D
2, 9D
3, 9D
4, 9D
5, 9D
6, 9D
7, 9D
8, relay 9JK
1, amplifier IC
41st, 2,3,4, triode 9Q
1Connect to form.
The utility model compared with prior art has following advantage: 1. safeguard function is comprehensive, has fault and discerns, diagnoses multiple functions such as protection, demonstration, alarm automatically; 2. convenient use, safe good reliability.
[description of drawings]
Fig. 1 is a circuit block diagram of the present utility model;
Fig. 2 is circuit theory diagrams of the present utility model (I);
Fig. 3 is circuit theory diagrams of the present utility model (II).
Among the figure: 1 is power conversion adjustment voltage stabilizing circuit, 2 is switch SERVO CONTROL executive circuit, 3 is the leakage current detect controlling output circuit, and 4 are the short circuit monitoring and controlling output circuit, and 5 are the overload monitoring and controlling output circuit, 6 are the overvoltage monitoring and controlling output circuit, 7 is under-voltage monitoring and controlling output circuit, and 8 is the misphase monitoring and controlling output circuit, and 9 are electric leakage/short circuit diagnosis control output circuit, 10 is amplifier IC door reference voltage circuit, and 11 are state demonstration and circuit for alarming.
[embodiment]
Below in conjunction with accompanying drawing and embodiment the utility model is described in further detail:
As shown in the figure, the utility model comprises that power conversion adjustment voltage stabilizing circuit 1, switch SERVO CONTROL executive circuit 2, leakage current detect controlling output circuit 3, short circuit monitoring and controlling output circuit 4, overload monitoring and controlling output circuit 5, overvoltage monitoring and controlling output circuit 6, under-voltage monitoring and controlling output circuit 7, misphase monitoring and controlling output circuit 8, electric leakage/short circuit diagnosis control output circuit 9, amplifier IC door reference voltage circuit 10, state show and circuit for alarming 11.
Power conversion is adjusted voltage stabilizing circuit 1 and extract the isolation low-tension supply from the main line AC power of input, supplies with each control circuit work required voltage after rectification, filtering, adjustment voltage stabilizing; Amplifier IC door reference voltage circuit 10 provides pure direct-flow steady voltage to supply with the amplifier IC benchmark gate voltage of leakage current detect controlling output circuit 3, short circuit monitoring and controlling output circuit 4, overload monitoring and controlling output circuit 5, overvoltage monitoring and controlling output circuit 6, under-voltage monitoring and controlling output circuit 7, misphase monitoring and controlling output circuit 8, electric leakage/short circuit diagnosis control output circuit 9.
Switch SERVO CONTROL executive circuit 2 drives the switching of main line AC power 2K-AC switch; The input of leakage current detect controlling output circuit 3 is from the main line AC power sampling of input, and output connects the input of switch SERVO CONTROL executive circuit 2, and output is connected to state simultaneously and shows and circuit for alarming 11; Short circuit monitoring and controlling output circuit 4 is from the main line AC power sampling of input, and output connects the input of switch SERVO CONTROL executive circuit 2, and output is connected to state simultaneously and shows and circuit for alarming 11; Overload monitoring and controlling output circuit 5 is from the sampling of short circuit monitoring and controlling output circuit 4 outputs, and output connects the input of switch SERVO CONTROL executive circuit 2, and output is connected to state simultaneously and shows and circuit for alarming 11; Overvoltage monitoring and controlling output circuit 6 is from the main line AC power sampling of input, and output connects the input of switch SERVO CONTROL executive circuit 2, and output is connected to state simultaneously and shows and circuit for alarming 11; Under-voltage monitoring and controlling output circuit 7 is from the sampling of overvoltage monitoring and controlling output circuit 6 outputs, and output connects the input of switch SERVO CONTROL executive circuit 2, and output is connected to state simultaneously and shows and circuit for alarming 11; Misphase monitoring and controlling output circuit 8 is from the main line AC power sampling of input, and output connects the input of switch SERVO CONTROL executive circuit 2, and output is connected to state simultaneously and shows and circuit for alarming 11.
Electric leakage/short circuit diagnosis control output circuit 9 is from the main line AC power sampling of output, input connects under-voltage monitoring and controlling output circuit 7, output connects the input of switch SERVO CONTROL executive circuit 2, and output is connected to state simultaneously and shows and circuit for alarming 11; The input of state demonstration and circuit for alarming 11 connects the output of switch SERVO CONTROL executive circuit 2, and the input of state demonstration and circuit for alarming 11 also is connected to the main line AC power of output.
The concrete composition of 11 part control circuits and enforcement purpose:
(A) power conversion is adjusted voltage stabilizing circuit 1 by piezo-resistance 1UR
1, 1UR
2, protective tube 1FUS, transformer 1B
1, rectifier 1DZ, triode 1Q
1, diode 1D
1, 1D
2, electric capacity 1C
1, 1C
2, 1C
3, 1C
4, 1C
5, resistance 1R
1, 1R
2Connect to form; Transformer 1B
1From the main line AC power of input, extract and isolate low-tension supply, after rectification, filtering, adjustment voltage stabilizing, supply with each control circuit work required voltage, make it enter the purpose of operation monitoring.
(B) switch SERVO CONTROL executive circuit 2 is by triode 2Q
1, 2Q
2, 2Q
3, resistance 2R
1, 2R
2, electric capacity 2C
1, 2C
2, 2C
3, diode 2D
1, 2D
2, 2D
3, 2D
4, 2D
5, relay 2JK
1, 2JK
2, sensitive switch 2K
1, electromagnetically operated valve 2ECS, bidirectional switch 2K-AC connects to form; By switching diode 2D
32D
4The negative pole that links to each other forms control input end (P), is connected to diode 3D
3, 4D
4, 5D
3, 6D
5, 7D
3, 8D
2Anodal, be connected respectively to each control output end by negative pole again, under the instruction of corresponding control output end, make the level of (P) end do the height conversion, cause the switch triode in the servo switch circuit to do the conduction and cut-off conversion, drive electromagnetically operated valve 2ECS and carry out main line 2K-AC switch and switch, implement to connect when safe, turn-off during fault and the purpose of locking.
(C) leakage current detect controlling output circuit 3 is by zero sequence current mutual inductor 3B
1, diode 3D
1, 3D
2, 3D
3, 3D
4, electric capacity 3C
1, 3C
2, 3C
3, resistance 3R
1, 3R
2, 3R
3, 3R
4, 3R
5, 3R
6, key switch 3T
1, 3T
2, the amplifier integrated circuit (IC)
13rd, 4 connect to form; Do the electric leakage sampling by zero sequence current mutual inductor, the charged line AC power is just often paid a limit and is not produced voltage, pays the frontier inspection operating value amplitude voltage that goes out to leak electricity during electric leakage, through resisting after disturbing absorptions, buffer circuit shaping setting, the signal voltage that detects is added to IC
1Relatively gate circuit identification of electric leakage; the internal control circuit upset; output electric leakage control command; make switch SERVO CONTROL executive circuit (P) end become low level; the conducting of switch control triode; the 2K-AC switch that triggers in the electromagnetically operated valve execution main line disconnects, and cuts off electric power output, implements the purpose that leak current fault is protected.Press and connect 3T
1The leak(age) test switch can be tested out the leakage current detect controlling output circuit and whether be in normal monitor state; Press and connect 3T
2Reset switch, power supply output is connected automatically, and fault is not got rid of automatic refusal.
(D) short circuit monitoring and controlling output circuit 4 is by current transformer 4B
1, rectifier 4DZ, electric capacity 4C
1, 4C
2, 4C
3, 4C
4, resistance 4R
1, 4R
2, 4R
3, 4R
4, 4R
5, diode 4D
1, 4D
2, 4D
3, 4D
4, 4D
5, 4D
6, the amplifier integrated circuit (IC)
11st, 2 connect to form.By current transformer 4B
1Make voltage sample, charged line the assumed load electric current by the time detect low level; Detect high level during short circuit, the buffer circuit output voltage through setting is added to IC
1Short circuit ratio is discerned than gate circuit; the upset of amplifier internal control circuit; the output short-circuit control command; make switch SERVO CONTROL executive circuit (P) end become low level; the 2K-AC switch that the conducting of switch control triode triggers in the electromagnetically operated valve execution main line disconnects, cuts off electric power output, implements the purpose that short trouble is protected.After fault is got rid of, press and connect 3T
2Reset switch, power supply output is connected automatically, and fault is not got rid of automatic refusal.
(E) overload monitoring and controlling output circuit 5 is by diode 5D
1, 5D
2, 5D
3, resistance 5R
1, 5R
2, 5R
3, 5R
4, 5R
5, electric capacity 5C
1, 5C
2, 5C
3, the amplifier integrated circuit (IC)
21st, 2 connect to form; By current transformer 4B
1Make voltage sample, when rated load, the voltage that detects is low level in the charged line, and the level that detects during overload seriously raises with overload, and output voltage is added to IC behind shaping buffering, delay setting circuit
2Relatively gate circuit identification of overload; upset output overloading control command takes place in the amplifier internal control circuit; make servo control circuit (P) end become low level; at this moment the conducting of switch control triode; the 2K-AC switch that triggers in the electromagnetically operated valve execution main line disconnects, cuts off electric power output, implements the purpose of overload protection.After overload is cut off electric power output, recover output automatically through the time-delay certain hour; If overload is serious, enter the short-circuit protection state automatically when exceeding the quata to decide 3 times in electric current, block electric power output indefinite duration.
(F) overvoltage monitoring and controlling output circuit 6 is by resistance 6R
1, 6R
2, 6R
3, 6R
4, 6R
5, 6R
6, 6R
7, 6R
8, electric capacity 6C
1, 6C
2, 6C
3, 6C
4, diode 6D
1, 6D
2, 6D
3, 6D
4, 6D
5, the amplifier integrated circuit (IC)
31st, 2, photoelectrical coupler IC
5Connect to form; By resistance 6R
1In the input main line, extract sampled voltage, be added to photoelectrical coupler IC after the rectifying and wave-filtering dividing potential drop
5Import the main line power supply just often, photoelectrical coupler is in lightly conducting, isolates 3. pin output low level of output; During overvoltage, the conducting of the photoelectrical coupler degree of depth, 3. pin is exported high level, and output signal voltage after setting buffer circuit was added to pressure-controlled amplifier IC
3Relatively gate circuit identification; the amplifier internal control circuit overturns; the output overvoltage control command; make switch SERVO CONTROL executive circuit (P) end become low level; the 2K-AC switch that the conducting of switch control triode triggers in the electromagnetically operated valve execution main line disconnects, cuts off electric power output, implements the purpose of overvoltage protection.After overvoltage is got rid of, recover electric power output automatically.
(G) under-voltage monitoring and controlling output circuit 7 is by resistance 7R
1, 7R
2, 7R
3, 7R
4, 7R
5, electric capacity 7C
1, 7C
2, diode 7D
1, 7D
2, 7D
3, 7D
4, 7D
5, the amplifier integrated circuit (IC)
33rd, 4 connect to form; From overvoltage circuit IC
53. extract sampled voltage in the pin output level, this voltage is far above amplifier IC
3The door reference voltage is added to under-voltage control amplifier IC behind the dividing potential drop initialization circuit
3In the gate circuit, make the amplifier control output end keep high voltage level during normal or overvoltage at input ac power.When photoelectrical coupler IC takes place when under-voltage input ac power
5Conducting weakens, isolates 3. voltage decline of output, is added to IC
3Making the door reference voltage descends; being lower than set point amplifier control circuit overturns; export under-voltage control command; the 2K-AC switch that switch SERVO CONTROL executive circuit (P) end is become in low level, the switch control triode conducting triggering electromagnetically operated valve execution main line disconnects, cuts off electric power output, the purpose of enforcement under-voltage protection.The electric power output of under-voltage eliminating back is connected automatically, but also to stop in arbitrary moment of AC power, when powering, under-voltage circuit makes the fault initiating output order earlier, cause 2K-AC in the main line to cut to detection line withdraws from again.
(H) misphase monitoring and controlling output circuit 8 is by resistance 8R
1, 8R
2, 8R
3, electric capacity 8C
1, 8C
2, diode 8D
1, 8D
2, the four high guaily unit integrated circuit (IC)
2The 3rd, photoelectrical coupler IC
6Connect to form; By resistance 8R
1Receive the main line AC power neutral line, through photoelectrical coupler IC
6, diode 8D
1Receive insulating power supply ground and the earth and constitute the detection loop.When input ac power inserted misphase, photoelectrical coupler conducting, 3. pin output high level were added to misphase control amplifier IC through the buffer circuit output signal voltage
2Relatively gate circuit identification; upset output misphase control command takes place in the amplifier internal control circuit; the 2K-AC switch that switch SERVO CONTROL executive circuit (P) end is become in low level, the switch control triode conducting triggering electromagnetically operated valve execution main line disconnects, cuts off electric power output, the purpose that the enforcement fault-phase protection locks.
(I) electric leakage and short circuit diagnosis control output circuit 9 are by resistance 9R
1, 9R
2, 9R
3, 9R
4, 9R
5, 9R
6, 9R
7, 9R
8, 9R
9, 9R
10, 9R
11, 9R
12, 9R
13, 9R
14, 9R
15, 9R
16, 9R
17, electric capacity 9C
1, 9C
2, 9C
3, 9C
4, 9C
5, 9C
6, 9C
7, 9C
8, diode 9D
1, 9D
2, 9D
3, 9D
4, 9D
5, 9D
6, 9D
7, 9D
8, relay 9JK
1, amplifier IC
41st, 2,3,4, triode 9Q
1Connect to form; Before the input ac power, 1K, the 2K among the main line switch 2K-AC always places a, a` on-position.After each control circuit enters the work operation, at first be that under-voltage circuit is made non-fault initiating output order earlier, impelled and put fortune IC
45. to be lower than 4. pin, to make 1 gate control output be low level to the pin current potential, drives relay 9JK
1Loaded line is connected in adhesive, incision electric leakage/short-circuit detecting voltage.Produce pressure drop, feed back to IC according to the voltage in this circuit of input
4Electric leakage/short circuit ratio is diagnosed than gate circuit, corresponding diagnosis recognition control circuit output signal voltage is added to electric leakage/short circuit ratio and diagnoses than gate circuit, corresponding diagnosis recognition control circuit output order blocks refusal by the switch servo control circuit with the AC power of input and connects loaded line; Make malfunction by demonstration and circuit for alarming and show, and the prompting that gives the alarm; Load line fault is not got rid of, and presses and connects 9T
1Reset switch also will be refused to connect, thereby implement the purpose of electric leakage/short circuit diagnosis protection.
(J) amplifier IC door reference voltage circuit 10 is by resistance 10R1, electric capacity 10C
1, 10C
2, diode 10D
1, 10D
2Form; In power conversion adjustment voltage-stabilizing output circuit, extract power supply, further step-down filtering again, set up a wide power high stable amplifier door reference voltage, overcome because of each control circuit causes voltage fluctuation when entering the switch operating state and cause a reference voltage and then to change, cause the setup parameter drift, realize the purpose of amplifier benchmark gate voltage high stable.
(K) state demonstration and circuit for alarming 11 are by light-emitting diode 11E
1, 11E
2, 11E
3, 11E
4, 11E
5, 11E
6, luminous neon lamp 11E
7, resistance 11R
1, 11R
2, 11R
3, 11R
4, 11R
5, 11R
6, electric capacity 11C
1, 11C
2, diode 11D
1, triode 11Q
1, 11Q
2, buzzer 11SP, speech IC IC
7Connect to form; The negative pole of each malfunction light-emitting diode is connected to each Monitoring and Controlling output respectively, and the main line power supply just often, to connect the luminous neon lamp of load circuit bright, and each control output end is high level, through resistance 11R
2The voltage that is added to each light-emitting diode positive pole after the current limliting equates with negative pole, not conducting of light-emitting diode, when certain fault takes place controlled main line power supply, the amplifier output of corresponding monitoring output circuit becomes low level, be connected to this light-emitting diode conducting, show malfunction.IC
7Speech IC, 8. pin output audio voltage not during the pin high level, when controlled operation power power circuit broke down, switch SERVO CONTROL executive circuit (P) end became low level, 11D
1Conducting IC-8. pin transfers low level to, and pin output audio voltage is through triode 11Q
2Amplify the promotion buzzer and sound the alarm, thereby the enforcement state shows and the purpose of alarm and reminding.
IC
1, IC
2, IC
3, IC
4Model be LM339; IC
5, IC
6Model be TLP521; IC
7Model be SC2304.
The embodiment operation principle is referring to Fig. 2, Fig. 3
(A) AC power between power conversion adjustment voltage-stabilizing output circuit 1 input main line L, the N phase line is added to piezo-resistance 1UR
1The two ends slicing enters transformer 1B through protective tube 1FUS
1Primary coil, secondary coil induction and output low-voltage alternating current power supply are by rectifier 1DZ rectification, electric capacity 1C1 filtering; Again by triode 1Q
1, resistance 1R
1, 1R
2, electric capacity 1C
2, 1C
3, 1C
4After carrying out electronic filtering and adjusting voltage stabilizing, whole control circuit work required voltage is supplied with in the output DC source.
(B) switch servo control circuit 2 topmost purposes are the switchings that drive main line AC power 2K-AC switch, finish the purpose of whole final control.
The driving stress main part is carried out by electromagnetically operated valve 2ECS.If 2. electromagnetic valve coil is held and be high potential, instantaneous the flowing through of electric current produces adhesive magnetic field when 1. holding, kept main line power supply 2K-AC switch connection main line afterwards again by built-in permanent-magnetic field; If 1. end is high potential, instantaneous the flowing through of electric current produces repulsion magnetic field when 2. holding, and electromagnetically operated valve discharges, and is kept by built-in permanent-magnetic field more afterwards, and 2K-AC turn-offs main line, power supply commutation testing circuit.Obtaining by relay 2JK1 that the electromagnetic valve coil current potential is forward and reverse switched.
During the initial input power supply, diode 2D
1Forward conduction, input capacitance 2C
1Energy storage is by relay 2JK
1B be added to electromagnetic valve coil to o and 2. hold, 2. end is high potential; 1. end is by relay 2JK
1O` link relay 2JK again to b`
2The a pin.Triode 2Q
3, resistance 2R
2, electric capacity 2C
2Constitute delay turn-on circuit, diode 2D
5, 2D
4Negative pole current potential this moment is higher than positive pole, all not conductings (if 2D
4When negative pole is the electronegative potential conducting, make the delay circuit can not conducting, electromagnetic valve coil will can not produce magnetic drive).With electric capacity 2C
2It is saturated gradually to charge, triode 2Q
3Base potential also increases and conducting, and the emitter output voltage and then raises, and reaches relay 2JK
2The coil pick-up voltage time, 2JK
2The a pin be communicated with the b pin, internal switch will be added in a pin power connection ground; 1. end is linked relay 2JK
2The a pin, thereby electromagnetic valve coil is instantaneous has electric current to pass through, coil produces electromagnetic stress, is kept by built-in permanent-magnetic field after the electromagnetically operated valve adhesive, simultaneously main line 2K-AC mains switch is connected sensitive switch 2K
1Connect.2K
1Connection makes relay 2JK
1The adhesive internal switch commutates, and what change electromagnetic valve coil formerly goes into electric direction, servo circuit is entered wait for failover stand-by state (2K
1Connect, make electric capacity 2C
2Electric weight be released relay 2JK
2Coil on no current, 2JK
2A pin and b pin open).
During stand-by state, the power supply that is added to electromagnetic valve coil is from relay 2JK
1A` be added to coil to o` and 1. hold, 2. hold relay 2JK by coil
1O be added to triode 2Q again to a
2Emitter (diode 2D
2For preventing that electromagnetic valve coil from producing negative peak pulse, breakdown switch triode 2Q when leading in electric current wink
2).Resistance 2R
1To triode 2Q
1Base stage provides cut-ff voltage, 2Q
1, 2Q
2Form the combination switch pipe, be in cut-off state, diode 2D this moment
3With 2D
4Connect to form switch control input end (P) and export high level.When fault instruction input, control input end (P) becomes low level, triode 2Q
1, 2Q
2Cut-ff voltage passes through 2D
3Bled off thereupon, instantaneous generation conducting, electromagnetic valve coil has electric current to pass through, and produces to repel magnetic field stress, drives main line 2K-AC mains switch and disconnects, and cuts to detection line sensitive switch 2K
1Disconnect relay 2JK simultaneously
1The coil power loop, the commutation of relay internal switch returns to the initial input power supply status.Pending fault is got rid of, and after input control end (P) is set up high level, just changes time-delay over to and connects 2K-AC main line mains switch.
(C) zero sequence current mutual inductor 3B is flow through in leakage current detect controlling output circuit 3 monitoring circuits electric leakage
1The current unbalance on former limit is paid the limit and is induced voltage, through diode 3D
1, electric capacity 3C1, resistance 3R
1Constitute to resist and absorb circuit, resistance 3R in disturbing slicing
2Buffering, electric capacity 3C
2, resistance 3R
3The dividing potential drop clamper is passed through resistance 3R again
4, electric capacity 3C
3Buffering, output electric leakage signal voltage is added to amplifier IC
13rd, 4 comparison circuit identifications at first are the 4th internal control circuit upsets, and electric leakage control output end pin is from the high level step-down; Have, power supply is through resistance 3R again
5Current limliting, diode 3D
2Conducting is added in the 3rd comparison circuit, the 8. fast 9. pin reference voltage that is higher than of pin voltage, and the upset of amplifier internal control circuit, control output end pin output electric leakage instruction, the pin is from the high level step-down.The light-emitting diode 11E that is connected with the end
1Conducting is luminous, diode 3D
3Conducting, control input end (P) level becomes low, and the switch servo control circuit enters corresponding state.(P) it is low to hold level to become, simultaneously 9D
1Conducting, circuit for alarming is triggered, thereby makes the leakage current detect controlling output circuit enter earth leakage protective, demonstration, alarm; Press and connect 3T
1Test switch, load circuit L phase current is through resistance 3R
6Get back to input main line N phase, zero sequence current mutual inductor 3B
1Whether the current unbalance on former limit pays the limit and induce electric leakage control voltage, thereby it is normal to test out this circuit.
(D) short circuit monitoring and controlling output circuit 4 main line power supply short circuits, current transformer 4B
1Secondary generation voltage fast rise, rectifier 4DZ rectification, electric capacity 4C
1Form direct current (resistance 4R after the filtering
1, 4R
2The formation dividing potential drop is provided with, diode 4D
1The forward conduction input voltage, the voltage 4C that detects when avoiding short circuit
1Soak time is long), voltage reaches voltage stabilizing didoe 4D very soon
2, 4D
3, 4D
4Puncture voltage is by resistance 4R
3Electric capacity 4C
2, 4C
3The High-frequency Interference that the instantaneous conducting of clamper and filtering produces is by resistance 4R
4(electric capacity 4C
4Buffering), the output short-circuit signal voltage is added to amplifier IC
11st, 2 comparison circuit identifications, first-selection is the 1st gate circuit interior overturn, control output end 2. pin uprises level from hanging down; Have, power supply is through resistance 4R again
5Current limliting, diode 4D
3Conducting be added to the 2nd comparison circuit, 6. pin door comparative voltage is higher than 7. pin door reference voltage rapidly, the 1. pin output short-circuit instruction of the 2nd amplifier internal control upset, control output end, 1. pin is from the high level step-down, therewith the light-emitting diode 11E that connects of end
2Conducting is luminous, diode 4D
6Conducting, control input (P) end level step-down, the switch servo control circuit enters corresponding state, (P) end level step-down, 9D
1Conducting, circuit for alarming is triggered, thereby makes the short circuit monitoring and controlling output circuit enter short-circuit protection, demonstration, alarm;
After the voltage commutation filtering that current transformer detects, be direct current when (E) overload monitoring and controlling output circuit 5 is transshipped, along with rising, reach certain value, voltage stabilizing didoe 5D with the serious voltage of overload
1Produce puncture voltage, through resistance 5R
1, 5R
2, electric capacity 5C
1Time-delay, resistance 5R
3Clamper, electric capacity 5C
2Output overloading signal after delaying time once more, voltage is added to amplifier IC
2The 1st comparison circuit be pin 5..When 4. 5. pin current potential is higher than the pin reference voltage, the 1st amplifier internal control circuit upset, control output end 2. pin uprises from low level; Have, power supply is through 5R again
4, diode 5D
2Conducting is added to 6. pin of the 2nd comparison circuit, and 6. pin door comparative voltage is higher than 7. pin door reference voltage rapidly; The 1. pin output overloading instruction of the upset of the 2nd amplifier internal control circuit, control output end, 1. pin is from the high level step-down, therewith the light-emitting diode 11E that connects of end
3Conducting is luminous, diode 5D
3Conducting, control input (P) end level step-down, the switch servo control circuit enters corresponding state.(P) end level step-down, 9D simultaneously
1Conducting, circuit for alarming is triggered, thereby makes the short circuit monitoring and controlling output circuit enter overload protection, demonstration, alarm;
(F) overvoltage monitoring and controlling output circuit 6 from the input AC power L by resistance 6R
1Sampling, diode 6D
1Rectification, electric capacity 6C
1Filtering, resistance 6R
2Pressure limiting is added to photoelectric coupling circuit IC
51. pin, forward current flows to 2. pin, through voltage stabilizing didoe 6D
2Puncture voltage is got back to AC power N phase.Coupling apparatus IC
51., 2. pin has that electric current passes through, isolation end produces conducting, the voltage source that is added in 4. pin is to 3. pin, through resistance 6R
3, electric capacity 6C
3Filtering is steadily risen voltage, voltage stabilizing didoe 6D when surpassing set point
3Produce puncture, voltage is added to resistance 6R
4, 6R
5Clamper, electric capacity 6C
2Buffering, the output overvoltage signal voltage is added to amplifier IC
3The 1st comparison circuit be pin 5., when 5. 4. the pin current potential is higher than the pin reference voltage, and amplifier IC
3The 1st internal control circuit upset, control output end 2. pin uprises from low level; Have, power supply is through 6R again
6, diode 6D
4Conducting be added to the 2nd comparison circuit 6. pin, 6. pin door comparative voltage is higher than 7. pin door reference voltage rapidly, and by resistance 6R
8To the overvoltage input 5. pin stack certain voltage (for eliminating overvoltage fluctuation critical effect, resistance 6R
7, electric capacity 6C
4Eliminate the impulse disturbances that diode moment conducting produces); When 6. 7. pin door comparative voltage is higher than pin, the 2nd amplifier internal control circuit upset, 1. pin output overvoltage instruction of control output end, 1. pin is from the high level step-down, therewith the light-emitting diode 11E that connects of end
4Conducting is luminous, diode 6D
5Conducting, control input (P) end level becomes low, and the switch servo control circuit enters corresponding state.(P) it is low to hold level to become, 9D
1Conducting, circuit for alarming is triggered, thereby makes the overvoltage monitoring and controlling output circuit enter overvoltage protection, demonstration, alarm; The normal back of input main line power up, output letter overvoltage voltage go into to decrease, and the control circuit upset resets, and recovers electric power output automatically.
(G) under-voltage monitoring and controlling output circuit 7 is from photoelectric coupling circuit IC
53. pin extracts sampled voltage, the main line AC power when operation, no matter be in normal or overvoltage, IC
5All be in lightly conducting, 3. pin is all exported certain voltage, and this magnitude of voltage is far above the reference voltage in the under-voltage gate circuit, through resistance 7R
1, 7R
2Dividing potential drop is set, and exports under-voltage signal voltage and is added to amplifier IC
3The 4th gate circuit is 10. in the pin; Under-voltage with the main line AC power, the under-voltage signal voltage of input descends thereupon, when 10. the pin current potential is lower than pin benchmark door current potential, and amplifier IC
3The 4th internal control circuit upset, control output end pin uprise level from low level; Have, power supply is through resistance 7R again
3, diode 7D
1Conducting is added to 8. pin (resistance 7R of the 3rd comparison circuit
4, electric capacity 7C
2Eliminate the impulse disturbances that diode moment conducting produces), 8. pin door comparative voltage is higher than 9. pin door reference voltage rapidly, at this moment amplifier IC
3The upset of the 3rd internal control circuit, control output end pin are from the 10. pressure limiting resistance 7R that is connected of pin of high level step-down: a. this moment and under-voltage input
5, diode 7D
2Conducting makes the under-voltage signal voltage of input cause pressure drop, avoids under-voltage fluctuation and produces critical effect; B. with electric leakage/short circuit diagnostic circuit in the diode 7D that is connected
4, 7D
5Conducting impels IC
45. pin door current potential is lower than 4. pin, makes the upset of this internal control circuit of amplifier, the control output end 2. pin step-down level, impel relay 9JK
1Adhesive, connection are because of the loaded line behind the under-voltage disjunction power supply; C. hold the light-emitting diode 11E that connects therewith
5Conducting is luminous; D. hold the diode 7D that connects therewith
3Conducting, control input (P) end level step-down, the switch servo control circuit enters corresponding state, and it is low (P) to hold level to become, 9D
1Conducting, circuit for alarming is triggered, thereby makes under-voltage monitoring and controlling output circuit enter under-voltage protection, demonstration, alarm: and to import at any one time stop, when powering, by 7C
1The under-voltage signal voltage that detects is made certain time-delay, make and under-voltagely stopping at every turn, when powering, making under-voltagely to start earlier.
(H) misphase monitoring and controlling output circuit 8 is by resistance 8R
1Make current limliting and extract sampled voltage, input photoelectric coupling circuit IC
62. pin, 1. pin is through diode 8D
1Negative pole is received the insulating power supply negative pole and is connected with the earth, constitutes to detect the loop.The AC power misphase of input main line, the testing circuit electric current flows through photoelectric coupling circuit, isolates 4. that the pin power supply outputs to 3. pin, through resistance 8R
2, 8R
3, electric capacity 8C
1Make anti-interference buffering back output misphase signal voltage and be added to amplifier IC
2The 3rd comparison circuit, 8. pin door comparison current potential is higher than 9. pin door reference potential, IC
2The 3rd internal control circuit upset of amplifier, control output end pin is held the light-emitting diode 11E that connects therewith from the high level step-down
6Conducting is luminous, diode 8D
2Conducting, control input (P) end level becomes low, and the switch servo control circuit enters corresponding state, and it is low (P) to hold level to become, 9D
1Conducting, circuit for alarming is triggered, thereby makes the misphase monitoring and controlling output circuit enter fault-phase protection and locking, demonstration, alarm.
(I) electric leakage and during short circuit diagnosis control output circuit 9 inactive states, main line 2K-AC switch 1k places a, 2k to place a ' connections detection incoming line.During the main line input ac power, whole control circuit enters the work operation, and under-voltage circuit is made non-fault initiating output control command, amplifier IC earlier
3The pin withdraws from after keeping the low level certain hour again.Diode 7D in the diagnostic circuit
4, 7D
5When pin low level, produce conducting, and be connected to amplifier IC
4The 1st 5. pin; 5. the pin reference potential is lower than a 4. pin comparison door current potential, the 1st internal control circuit upset of amplifier this moment, and control output end 2. pin becomes low level, impels relay 9JK
1Adhesive is connected and is detected loaded line.
At this moment if input is leaked electricity, short-circuit test voltage:
A. leakage tests voltage is by resistance 9R
16, 9R
17Dividing potential drop, electric capacity 9C
7, 9C
8Export after the filtering, pass through 9D
7Forward conduction, leakage tests voltage is added to amplifier IC
4Compare 8. pin of gate circuit; 8. pin is by diode 9D
7, relay 9JK
1K
2, resistance 9R
17, the 2k in the main line 2K-AC switch be added to input main line N mutually in, incoming line N and load line L ' mutually during off-state if there is leak resistance less than 18K Ω, power supply is surveyed in input test will pass through this resistance, causes pressure drop through load L ' phase circuit, the k2 of relay 9JK1, leak resistance with going into; Pressure drop is by amplifier IC
48. pin is diagnosed, when 8. pin door comparison current potential is lower than 9. pin door reference potential, and 3 internal control circuits upsets of amplifier, control output end pin uprises level; Have, power supply is through resistance 9R again
4, diode 9D
4Conducting is added to amplifier IC
1Electric leakage input gate comparison circuit 8., in the pin, amplifier is triggered, internal control circuit upset output control command, instruction output end pin step-down level, the diode 9D that connects of end therewith
1Conducting is through resistance 9R
5Off-resistances 9R
6Be delivered to amplifier IC
4The 1st the 5. power supply of pin, power supply is by resistance 9R
7Clamp low (this moment diode 9D
3Oppositely not conducting) [electric capacity 9C
3When fault-free, be high level filtering with], 2. this make that pin is in low level, relay 9JK
1Keep adhesive, guarantee to carry to detect and do not interrupt, get rid of up to fault.Connect 3T if press this moment
2Switch, IC
1 pin current potential can reduce, but the control voltage of control circuit output after diagnosing be added in a comparison circuit 8. the current potential of pin still be higher than 9. pin door reference potential, 3 internal control circuits do not overturn, electric leakage control output end pin is still kept in the output electric leakage commands for controlling, has only fault to get rid of to reset and just can make the control exit status;
B. short-circuit test voltage is by resistance 9R
8, 9R
9, 9R
10, triode 9Q
1, electric capacity 9C
2, 9C
4Form emitter follower, triode 9Q
1Emitter output short-circuit test voltage, amplifier IC
46. pin is diagnosed.6. pin voltage enters load L phase circuit through the k1 of relay 9JK1,1k in the main line 2K-AC switch; If loaded line L ' and N ' mutually between short circuit (resistance less than set point time), power supply from L through this resistance to N ' phase, cause pressure drop, by the 2nd of amplifier IC4 6. pin and 7. pin comparative diagnoses (resistance 9R by the 2k the main line 2K-AC switch with going into
14, 9R
15Constitute fixed bias and provide power supply) to 7. pin.When the loaded line short circuit, line voltage distribution feeds back to 6. pin, when 6. being reduced to 7. pin under the pin door comparative voltage, and amplifier IC
4The 2nd 1. pin current potential rising of internal control circuit output, triode 9Q
1Enter conducting, collector electrode load resistance 9R
9Supply power voltage descends, and 10. pin door comparison door current potential is lower than pin door reference potential (by resistance 9R
1, 9R
2Be provided with formation 9., pin door reference power supply, electric capacity 9C
1Filtering); The 4th internal control circuit upset of amplifier this moment output control command, instruction output end pin uprises level, and power supply is through resistance 9R
3, diode 9D
5Be added to amplifier IC
1Short circuit input gate comparison circuit is pin 5., and 6. pin door current potential uprises level, IC
11st, 2 internal control circuits overturn simultaneously, short circuit control command output pin step-down level, the diode 9D of end connection therewith
2Conducting is through resistance 9R
5, off-resistances 9R
6Be delivered to amplifier IC
4The 1st the 5. power supply of pin, power supply is by resistance 9R
7Clamp low (this moment diode 9D
3Oppositely not conducting), 5. the pin current potential is lower than 4. pin, and the 1st output control terminal 2. pin is in low level, relay 9JK
1Keep adhesive, guarantee to carry the detection power supply not interrupt, get rid of up to fault.Connect 3T if press this moment
2Switch, IC
12. the pin current potential can reduce, but the control voltage of control circuit output after diagnosing be added in a comparison circuit 5. the current potential of pin still be higher than 7. pin door reference potential, the 2nd internal control circuit do not overturn, the short circuit control output end 1. pin still keep in the output short-circuit commands for controlling, have only fault to get rid of to reset and just can make the control exit status.
(J) amplifier IC door reference voltage circuit 10 power supplys are through 10R
1Current limliting and 10D
1, 10D
2Go into ground after the serial connection, utilize 10D
1, 10D
2Conducting forms pressure drop, at 10R
1With 10D
1The anodal end that links to each other is obtained setting voltage, and setting voltage is by 10C
1, 10C
2Do anti-interference and filtering after form pure direct-flow steady voltage and supply with corresponding amplifier IC benchmark gate voltage.
(K) state shows and circuit for alarming 11 main line input ac powers, after switch 2K-AC connects loaded line, through piezo-resistance 1UR
2Slicing, luminous neon lamp 11E
7Through resistance 11R
1Feed the output of working power indication electric power; The malfunction LED power source is through 11R
2Be added to 11E
1, 11E
2, 11E
3, 11E
4, 11E
5, 11E
6Positive pole, negative pole is received IC respectively
1, IC
2, IC
3Each control output end 1., the pin.High level is all kept in each control output end during operation power circuit fault-free, not conducting of light-emitting diode: monitored circuit has fault: during a. electric leakage, and Monitoring and Controlling circuit output electric leakage control command, IC
1 pin step-down level, light-emitting diode 11E
1The luminous demonstration electric leakage of conducting; B. during short circuit, Monitoring and Controlling circuit output short-circuit control command, IC
11. pin becomes low level, light-emitting diode 11E
2The luminous demonstration short circuit of conducting; When c. transshipping, Monitoring and Controlling circuit output overloading control command, IC
21. pin becomes low level, light-emitting diode 11E
3The luminous demonstration overload of conducting; D. during overvoltage, Monitoring and Controlling circuit output overvoltage control command IC
31. pin becomes low level, light-emitting diode 11E
4The luminous demonstration overvoltage of conducting; When e. under-voltage, the Monitoring and Controlling circuit is exported under-voltage control command 1C
3The pin becomes low level, light-emitting diode 11E
5The luminous demonstration of conducting is under-voltage; F. during misphase, Monitoring and Controlling circuit output misphase control command, IC
2The pin becomes low level, light-emitting diode 11E
6The luminous demonstration misphase of conducting. by 11Q
1, 11R
3, 11R
4, 11C
1, 11C
2Constitute step-down adjustment circuit and export corresponding IC
7Required operating voltage, IC
78. pin output audio voltage 11Q not during the pin high level
2End, 11SP does not sound.When monitored operation power line failure, under the effect of monitoring recognition control circuit, during switch SERVO CONTROL output (P) end step-down level, 11D
1Conducting, IC
78. pin transfers low level to, pin output audio voltage, 11Q
2With the audio voltage triggering and conducting, output audio amplifies voltage promotion buzzer 11SP and sounds the alarm, and its sound frequency height can be by adjusting resistance 11R
5Resistance changes.Thereby realize that malfunction shows and the purpose of alarm and reminding.
The utility model can be widely used in the safety utilization of electric power monitoring of single phase alternating current (A.C.) operation electric power networks end subscriber, provides strong assurance for guaranteeing Electrical Safety.
Claims (1)
1, a kind of safety electricity consumption protector is characterized in that comprising that power conversion adjustment voltage stabilizing circuit (1), switch SERVO CONTROL executive circuit (2), leakage current detect controlling output circuit (3), short circuit monitoring and controlling output circuit (4), overload monitoring and controlling output circuit (5), overvoltage monitoring and controlling output circuit (6), under-voltage monitoring and controlling output circuit (7), misphase monitoring and controlling output circuit (8), electric leakage/short circuit diagnosis control output circuit (9), amplifier IC door reference voltage circuit (10), state show and circuit for alarming (11);
Power conversion is adjusted voltage stabilizing circuit (1) and is supplied with each control circuit work required voltage;
Amplifier IC door reference voltage circuit (10) provides pure direct-flow steady voltage to supply with amplifier IC benchmark gate voltage;
Switch SERVO CONTROL executive circuit (2) drives the switching of main line AC power 2K-AC switch;
The input of leakage current detect controlling output circuit (3) is from the main line AC power sampling of input, and output connects the input of switch SERVO CONTROL executive circuit (2), and output is connected to state simultaneously and shows and circuit for alarming (11);
Short circuit monitoring and controlling output circuit (4) is from the main line AC power sampling of input, and output connects the input of switch SERVO CONTROL executive circuit (2), and output is connected to state simultaneously and shows and circuit for alarming (11);
Overload monitoring and controlling output circuit (5) is from the sampling of short circuit monitoring and controlling output circuit (4) output, and output connects the input of switch SERVO CONTROL executive circuit (2), and output is connected to state simultaneously and shows and circuit for alarming (11);
Overvoltage monitoring and controlling output circuit (6) is from the main line AC power sampling of input, and output connects the input of switch SERVO CONTROL executive circuit (2), and output is connected to state simultaneously and shows and circuit for alarming (11);
Under-voltage monitoring and controlling output circuit (7) is from the sampling of overvoltage monitoring and controlling output circuit (6) output, and output connects the input of switch SERVO CONTROL executive circuit (2), and output is connected to state simultaneously and shows and circuit for alarming (11);
Misphase monitoring and controlling output circuit (8) is from the main line AC power sampling of input, and output connects the input of switch SERVO CONTROL executive circuit (2), and output is connected to state simultaneously and shows and circuit for alarming (11);
Electric leakage/short circuit diagnosis control output circuit (9) is from the main line AC power sampling of output, input connects under-voltage monitoring and controlling output circuit (7), output connects the input of switch SERVO CONTROL executive circuit (2), and output is connected to state simultaneously and shows and circuit for alarming (11);
The input of state demonstration and circuit for alarming (11) is connected to the output of switch SERVO CONTROL executive circuit (2), and the input of state demonstration and circuit for alarming (11) also is connected to the main line AC power of output.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200420045016 CN2733700Y (en) | 2004-04-23 | 2004-04-23 | A protector for safety power utilization |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200420045016 CN2733700Y (en) | 2004-04-23 | 2004-04-23 | A protector for safety power utilization |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2733700Y true CN2733700Y (en) | 2005-10-12 |
Family
ID=35069536
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200420045016 Expired - Fee Related CN2733700Y (en) | 2004-04-23 | 2004-04-23 | A protector for safety power utilization |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2733700Y (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103840429A (en) * | 2013-03-21 | 2014-06-04 | 刘圣平 | Safety universal control circuit module and safety leakage protector |
| CN112904225A (en) * | 2021-01-05 | 2021-06-04 | 珠海格力电器股份有限公司 | Fault detection system of actuator |
| CN112957026A (en) * | 2021-02-05 | 2021-06-15 | 上海爻火微电子有限公司 | Detection circuit for access impedance and electronic equipment |
-
2004
- 2004-04-23 CN CN 200420045016 patent/CN2733700Y/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103840429A (en) * | 2013-03-21 | 2014-06-04 | 刘圣平 | Safety universal control circuit module and safety leakage protector |
| CN103840429B (en) * | 2013-03-21 | 2017-02-08 | 刘圣平 | Safety universal control circuit module and safety leakage protector |
| CN112904225A (en) * | 2021-01-05 | 2021-06-04 | 珠海格力电器股份有限公司 | Fault detection system of actuator |
| CN112957026A (en) * | 2021-02-05 | 2021-06-15 | 上海爻火微电子有限公司 | Detection circuit for access impedance and electronic equipment |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |