CN1677834A - Three-phase AC. electric motorelectricity-saver - Google Patents
Three-phase AC. electric motorelectricity-saver Download PDFInfo
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- CN1677834A CN1677834A CNA2005100248173A CN200510024817A CN1677834A CN 1677834 A CN1677834 A CN 1677834A CN A2005100248173 A CNA2005100248173 A CN A2005100248173A CN 200510024817 A CN200510024817 A CN 200510024817A CN 1677834 A CN1677834 A CN 1677834A
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Abstract
Electricity saving device comprises five circuit modules: thyristor intelligent control module, three-phase AC contactor module, operation state display device, operational power supply for control board, and signal source of absence phase. The thyristor intelligent control module is connected to the three-phase AC contactor module in parallel. Three pieces of phase conductors in 380V are connected to input ends of AC contactor module and intelligent control module accordingly. Three outputs from the intelligent control module are connected to output ends of the AC contactor. The disclosed device also includes control device, which is connected to other five modules in plug mode. Advantages are: simple structure, small size, light weight, low cost, small self consumed power, easy of manufacture and maintenance in module structure.
Description
Technical field
The present invention relates to a kind of electric saver of three-phase ac motor, definitely say, relate to a kind of three-phase AC asynchronous motor electricity-saving appliance, belong to the electric saver of three-phase ac motor technical field.
Background technology
Three-phase AC asynchronous motor is widely used a kind of dynamic power machine, and annual power consumption accounts for more than 50% of China's power consumption.Under the condition of operating at full capacity, motor efficiency is generally higher, and usually about 80%, yet in case load descends, the efficient of motor significantly descends thereupon.Decide by required power under maximum possible load and the worst working condition because during motor selection be, most motor in the load factor of most of running time 50%～60%, so the operational efficiency during actual motion is all lower, therefore improve the operational efficiency of this part motor, huge economic benefit and social benefit are arranged.
A kind of reactor electricity-saving appliance is arranged in the background technology, and the technical scheme of this electricity-saving appliance is respectively to seal in a reactor between three power inputs of AC asynchronous motor and three phase lines, i.e. the choke of ribbon core.Though reactor can reduce the input voltage of AC asynchronous motor, improve the power factor of AC asynchronous motor operation, can reach the purpose of economize on electricity, but electric current flows through reactor, iron loss and copper loss make the reactor heating, and the reactor consumable power is big, the electricity-saving appliance inefficiency.In addition, the reactor electricity-saving appliance also has the shortcoming that volume is big, heavy and involve great expense.
Summary of the invention
Goal of the invention of the present invention is to release a kind of threephase motor electricity-saving appliance, and that this electricity-saving appliance has is simple in structure, volume is little, cost is low, consumable power is little.The thyristor module of this electricity-saving appliance has contactless soft start function, control loop is answered command system below adopting fitting of high integration intelligent element composition, self-excited circuit with Resistor-Capacitor Unit and triggering element composition, detect the load characteristic that obtains with self, the self-excitation silicon controlled angle of flow, make controllable silicon work be adjusted in the electric pressure that is suitable for present load character, thereby reach energy-saving run.And be furnished with automatically, manually, emergency control apparatus.
Technical scheme of the present invention is the circuit module structure that described electricity-saving appliance adopts.This electricity-saving appliance contains intelligent control module with thyristor, the three-phase ac contactor module, operating status display apparatus, five circuit modules in control board working power and default phase signal source, intelligent control module with thyristor and the parallel connection of three-phase ac contactor module: the phase line of three 380V is connected with three phase line inputs of three-phase ac contactor module and three phase line inputs of intelligent control module with thyristor respectively, three power supply outputs of intelligent control module with thyristor are connected with three outputs of three-phase ac contactor respectively, it also contains control device, and this device is connected with other five circuit modules respectively with plugging mode.
Now be described with reference to the accompanying drawings technical scheme of the present invention.
A three-phase AC motor Power Saver, intelligent control module 105 includes thyristor, three
Phase AC contactor module 104, the working state display device 103, the control panel Power supply 102
And lack of phase signal source 101, thyristor intelligent control module 105 with thyristor circuit module, three
A phase line input, three-phase line outputs, with five-pin socket 1 'cable, three-phase power
Outlet 2 ', thermostat tube with two core socket 190 and 6' cable, three-phase AC contactor
Module 104 with three-phase AC contactor, three-phase line input, three phase output and following the line
Electric CJ 'normally open contacts CJ, work status display device 103 including the first single-pole three throw switch
Off 188, second SP3T switch 189, a fourth fuse 195, a fan 194, the first finger
Indicator light 191, the second indicator 192, the third indicator 193, relays CJ 'and with two-pin plug
Block 4 'cable, control panel work with the fourth power transformers 187 and 102 with a two-pin plug
Block 5 'cable, lack of trust of source 101 with the first transformer 184, a second transformer 185,
Third transformer 186, the first fuse 198, a second fuse 197, third fuse 196
And with a four-pin socket 3 'cable, three phase 380V line UA, UB, UC respectively, and three
Phase AC contactor module 104 three-phase line input and thyristor intelligent control module 105
The three-phase line input connection, three phase 380V line UA, UB, UC and neutral N, respectively,
Three-phase power outlet 2 'plug cover 23', 22 ', 21' and 20 'connected to three 380V
Phase line UA, UB, UC any one phase and neutral line N respectively and job status display device
103 inputs U 'and N' connected thyristor three intelligent power control module 105 outputs
The end of the LA, LB, LC 104 respectively contact with the three-phase AC output terminal, temperature
190 fixed to the thyristor control intelligent control module 105 radiator, thermostat tube 190
Two output terminals, respectively, and two-pin socket 6 'plug cover 60' and 61 'connected to the first transformer
184, a second transformer 185, a third transformer primary coil 186, respectively, through the first end
A fuse 196, a second fuse 197, and the third with three power fuse 198 output
LA, LB, LC connector, first transformer 184, a second transformer 185, a third transformer 186
The other end of the primary winding and connected to the zero line N, the first transformer 184, a second transformer 185,
The third secondary winding of the transformer 186-pin socket at one end and four 3 'plug cover 30' is connected,
First transformer 184, a second transformer 185, a third secondary winding of the transformer 186 on the other
Respectively, and four-pin socket at one end 3 'of the insert sleeve 31', 32 'and 33' connected to the first pole three
Knife throw switch 188 and a second single-pole three-throw switch 189 knife connection, the fourth fuse 195
Across the input terminals U 'and the first SP3T switch blade 188 between the third LED 193
Across the SP3T switch blade 188 and the input terminal N ', between the fan 194 and the fourth variable
The primary coil voltage multiplier 187 in parallel across the first single-pole three-throw switch 188 and the output of the left-throw
Into the end N 'between the second single-pole three-throw switch 189 throw right and left, respectively, with two-pin socket throwing
4 'insert sleeve 40' and 41 'connected to the second indicator 192 and the relay CJ' in parallel across
Connected to the second pole, three-throw switch 189 and the input terminal of the right throw N 'between the relay CJ' of
CJ normally open contacts connected across the second single-pole three-throw switch 189 to the right and the left throw throwing between the first
LED 191 is connected across the first transformer primary coil ends 184, the fourth transformer
Both ends of the secondary winding 187-pin socket with two 5 'insert set 50' and 51 'connected,
Characterized in that it further comprises control means 100, the control device 100 includes a soft-start delay
Control circuit, overheat protection circuit module phase power supply voltage compensation circuit consists of resistors: The first
A resistor 117, a second resistor 118, third resistor 119, fourth resistor 120, a fifth resistor
121, sixth resistor 122, resistor 123 Seventh, eighth resistor 124, the ninth resistor 125, p.
Ten resistors 126, eleventh resistor 127, resistor 128 XII, XIII resistor 129, p.
Fourteen resistor 130, resistor 131 fifteenth, sixteenth resistor 132, resistor 133 Seventeenth,
Eighteenth resistor 134, resistor 135 nineteenth, twentieth resistor 136, the twenty-first resistor
137, twenty second resistor 138, semi-variable resistor: first semi-variable resistor 139, second half
Variable resistor 140, the exclusion: exclusion 141 first, second exclusion 142, third exclusion 143
The fourth exclusion 144, capacitance: a first capacitor 145, a second capacitor 146, a third capacitor 147,
The fourth capacitor 148, the fifth capacitor 149, the sixth capacitor 150, capacitor 151 Seventh and eighth power
Volume 152, the ninth capacitor 153, capacitor 154 Tenth, eleventh capacitor 155, the twelfth capacitor
156, diodes: a first diode 157, a second diode 158, the third diode 159,
Fourth diode 160, the fifth diode 161, diode 162 Sixth, seventh diode 163,
Eighth diode 164, the ninth diode 165, diode 166 tenth, eleventh diode
167, diode 168 Twelfth, Thirteenth diode 169, the fourteenth diode 170, steady
Pressure pipe: The first regulator 171, a second regulator 172, a third regulator 173, a light-emitting diode
Tube: The first light-emitting diode 174, SCR: first SCR 175, three-terminal regulator:
The first three terminal regulator 176, manifold: first manifold 177, a second manifold 178, p.
Three manifold 179, the fourth manifold 180, the fifth manifold 181, rectifier bridge: first rectifier
Bridge 182 relay: first relay 183 composition, two pin plug 5 pins 50,51
With the first rectifier bridge 182 2,3 pin connector, a first rectifier bridge 182 feet, the first
Twelve positive capacitor 156, the first three-terminal regulator tube 176 a foot and then, the first rectifier bridge
182 4 feet, twelfth capacitor 156 anode, cathode eleventh capacitor 155, the first three-terminal
Regulator of the two feet grounded, the first three terminal regulator 176 3 feet, eleventh capacitor 155
Positive and then, the first three terminal regulator 176 +12 V output terminal with the first manifold 177
4 feet, 8 feet first manifold 177, the left end of the sixteenth resistor 132, five-pin plug
1 the pin 10, the first half of the variable resistor 139 and the right side of the sliding arm, the second semi-variable resistance 140
The upper end of the fourth manifold 180 4 feet, the first exclusion 141 a foot, the second exclusion 142
2 feet, 3 feet a second exclusion 142, manifold 181 Fifth 11 feet, the fifth integration
Block 181 is 12 feet, 13 feet fifth manifold 181, the upper end of the seventh resistor 123, p.
2 feet of a relay 183, the third diode anode 159, the upper end of the eighth resistor 124,
The third exclusion 143 5 feet, the upper end of the ninth resistor 125, two 6-pin plug pin 60
Connect the ground terminal GND, respectively, with four-pin plug 2 pin 20, eighteenth resistor 134 to the left
End, a first thyristor anode 175, cathode 148, the fourth capacitor, the fifth capacitor 149
Negative, the sixth capacitor 150 is negative, the fifth of 8 feet manifold 181, the second half of the variable
The lower end of resistor 140, a negative first capacitor 145, a first negative light emitting diode 174,
The left end of the twenty-resistor 136, capacitor 152 is negative eighth, the ninth capacitor 153 is negative,
Tenth negative capacitance 154, four-pin plug 3 pin 30, the seventh capacitor 151 negative,
Five-pin plug 1 pin 11, five-pin plug 1 pin 12, the left end of the second capacitor 146,
First manifold 177 a foot, fourth exclusion 144 a foot, fourth exclusion 144 2 feet,
The fourth exclusion 144 3 feet, the fourth exclusion 144 4 pin connector, the fourth exclusion 144 5
Feet, 3 feet of the first manifold 177 and connected, the first relay 183 a foot, and the third two-pole
Cathode tube 159, and the second manifold 178 of 11 feet, 12 feet a second manifold 178 and
Next, the lower end of the seventh resistor 123, first capacitor 145 of the positive electrode, the first manifold 177
Two legs, the first manifold 177 6 feet and then, the first manifold 177 5 feet, a second electrical
Yung-146 and connect the right end of the second manifold 178 5 feet, 6 feet a second manifold 178,
The second manifold 178 of 10 feet, 13 feet a second manifold 178, the third exclusion 143
One foot in the third exclusion 143 2 feet and then, the second manifold 178 of 14 feet, eighth resistor
The lower end 124, the first light emitting diode 174 and the positive connection, a second manifold 178 7
Feet, the second exclusion 142 4 feet, 5 feet a second exclusion 142 and then the second manifold 178
, 15 feet, 16 feet a second manifold 178, the lower end of the ninth resistor 125, the tenth resistor
126 of the upper end of the first diode 157 is connected to the negative electrode and the third exclusion 143 3 feet, the first
Three exclusion 143 4 feet, 6 feet of a third manifold 179, a third manifold 179 10
Feet, the first diode 158 of the cathode, anode and eighth diode 164 connected, two pin plug
4 pin 40, two pin plug 4 pin 41, the first relay 183 4 feet, the first following the
Electric 183 3 feet and then, the tenth resistor 126, the lower end of the upper sixth resistor 122,
First diode 157 of the cathode, the positive third capacitor 147, resistor 137, a twenty-first
Left and then, the lower sixth resistor 122, diode 168 Twelfth positive, Thirteenth
Diode 169 of the cathode, anode and Fourteenth diode 170 connected, the twenty-first resistor 137
The right side, the lower end of the eleventh resistor 127, third manifold 179 is connected to pin 2 and the first
The left half of the variable resistor 139, the upper end of the twelfth resistor 128, third manifold 179
5 feet and then, the lower end of the twelfth resistor 128, the upper end of the eleventh resistor 127, Part III
179 a foot into blocks and then the third manifold 179, 13 feet, and the third manifold 179
14 feet, eighth diode 164 is connected to the negative electrode and the third manifold 179 3 feet, twenty-
The left end of the resistor 136, the first exclusion 141 2 feet and then, the third manifold 179 7 feet,
Second diode 158 is connected to the negative and the third manifold 179 8 feet, and the third manifold 179
9-foot, five-pin plug 1, pin 12, a five-pin plug and connect the pin 13, Episode
Into blocks of 12 179 feet, the right end of the seventeenth resistor 133, diode 163 Seventh negative,
Seventh capacitor 151 connected to the left and the seventh positive diode 163, resistor 133 Seventeenth
The left, the right end of the sixteenth resistor 132, a first SCR 175 and the positive connection, the first
SCR triggering electrode 175, the left eighteenth resistor 134, resistor 135 in the left nineteenth
End and connected, the right end of the nineteenth resistor 135, two 6-pin plug pin 61 and connected, the fifth
Manifold 181 is 4 feet, 16 feet fifth manifold 181, the first 5 feet of exclusion 141
And then, the fifth of six feet manifold 181, the fifth Manifold 181 14 feet, the first exclusion
141 3 feet and then, the fifth of five feet manifold 181, the fifth Manifold 181 15 feet,
The first exclusion 141 a foot, the first exclusion 141 4 feet, 2 feet a second exclusion 142,
The second exclusion 142 3 feet and then, the fifth Manifold 181 11 feet, the fifth Manifold 181
12 feet, 13 feet fifth manifold 181, the second exclusion 142 a foot and then the fifth
Manifold 181 a foot, the fifth manifold 181 2 feet, 3 feet of the Fifth manifold 181,
The positive first voltage regulator diode 171, a second Zener diode 172 of the cathode, a third voltage
The diode anode 173 and then, the negative first voltage regulator diode 171, a second Zener Diodes
Cathode tube 172, the third zener diode 173 is negative, respectively, the thirteenth resistor 129
The upper end of the upper end of the fourteenth resistor 130, resistor 131 connected to the upper fifteenth, thirteenth
The lower end of resistor 129, the positive fourth capacitor 148, the fourth diode anode 160 and then,
The lower end of the fourteenth resistor 130, the fifth capacitor 149 positive, 161 negative fifth diode
Pole and connected, the lower end of the fifteenth resistor 131, capacitor 150 Sixth positive, sixth diode
The negative electrode 162 and then, the sixth diode 162 of the cathode, anode fifth diode 161,
Fourth diode cathode, respectively, with four 160-pin plug 3 pin 31,32,33 connections,
Fourth Manifold 180 14 feet, the fourth of seven feet manifold 180, the fourth manifold 180
1 foot were negative with the twelfth diode 168, diode 169 Thirteenth negative,
Fourteenth diode 170 connected to the negative terminal of the fourth manifold 180 to 2 feet, the fourth manifold
180 of 6 feet, 13 feet Fourth manifold 180, the second half of the variable resistor 140 and the sliding arm
Next, the fourth manifold 180 3 feet, eleventh anode diode 167, capacitor 154 Tenth
Positive and connected, the fourth of five feet manifold 180, the ninth capacitor 153 of the cathode, the twelfth
Diode 166 connected to the negative and the fourth Manifold 180 12 feet, eighth capacitor 153 is
Electrode, a negative electrode 165 and the ninth diode components, the ninth diode anode 165, a first resistor
The lower end 117, the left end of the twenty-second resistor 138 and then, the tenth diode 166 of the cathode,
The lower end of the third resistor 119, the left end of the second resistor 118 and then, the eleventh diode 167
Positive, the lower end of the fifth resistor 121, and a fourth resistor 120 is connected to the left end, four-pin plug
Two pins of 21, four-pin plug 2 pin 22, four-pin plug 2 pin 23 respectively with the first
Twenty-two resistor 138 right, the right end of the second resistor 118, the right end of the fourth resistor 120 is connected
Next, four-pin 2 to ground the pin 20, the thyristor intelligent control module 105 five-pin plug
Block 1 'insert sleeve 10', 11 ', 12', 13 ', 14', respectively, the control device 100 of the five-pin plug
Head a plug connector pins in 10,11,12,13,14, three-phase power outlet 2 'insert sets
20 ', 21', 22 'and 23', respectively, the control device 100 of the receptacle four core pins of the plug 2
20,21,22 and 23 plug connection, lack of a four-phase signal source 101-pin socket 3 'insert sets
30 ', 31', 32 'and 33', respectively, the control device 100 is a four-pin plug 3 pins 30,
31, 32 and 33 plug connection, work status display device 103 two-pin socket 4 'plug
Sleeve 40 'and 41', respectively, the control device 100 on the two core pins 40 of the plug 4 and 41
Plug connector, the power supply control board 102 two-pin socket 5 'insert set 50' and 51 'minutes
Do the control device 100 two pin plug 5 pin plug connections 50 and 51, the thermostat tube
190 two-pin socket 6 'plug cover 60' and 61 ', respectively, and control 100, two pin plug 6
The pins 60 and 61 plug connector.
...
Compare with background technology, of the present invention have a following advantage:
1, simple in structure, volume is little, in light weight, cost is low.
2, consumable power is little, high efficiency.
3, contactless soft start, stepless voltage regulation.
4, use modular structure, adopt to patch between module and the module to be connected, both be convenient to manufacture, be convenient to maintenance again.
Description of drawings
Fig. 1 is the circuit block diagram of electricity-saving appliance of the present invention.
Fig. 2 is the circuit diagram of electricity-saving appliance of the present invention.
Fig. 3 is the circuit diagram of the control device 100 of electricity-saving appliance of the present invention.
Embodiment
Embodiment.
Electricity-saving appliance of the present invention adopts circuit block diagram shown in Figure 1, the circuit diagram of circuit diagram shown in Figure 2 and control device shown in Figure 3 100.The components and parts detail list of now enumerating electricity-saving appliance of the present invention is as follows:
Resistance:
The resistance of first resistance 117 is 12K, the resistance of second resistance 118 is 300K, the resistance of the 3rd resistance 119 is 12K, the resistance of the 4th resistance 120 is 300K, the resistance of the 5th resistance 121 is 12K, the resistance of the 6th resistance 122 is 1K, the resistance of the 7th resistance 123 is 2K, the resistance of the 8th resistance 124 is 4.7K, and the resistance of the 9th resistance 125 is 4.7K, and the resistance of the tenth resistance 126 is 1K, the resistance of the 11 resistance 127 is 100K, the resistance of the 12 resistance 128 is 33K, and the resistance of the 13 resistance 129 is 4.7K, and the resistance of the 14 resistance 130 is 4.7K, the resistance of the 15 resistance 131 is 4.7K, the resistance of the 16 resistance 132 is 3K, and the resistance of the 17 resistance 133 is 200K, and the resistance of the 18 resistance 134 is 2K, the resistance of the 19 resistance 135 is 10K, the resistance of the 20 resistance 136 is 4.7K, and the resistance of the 21 resistance 137 is 20K, and the resistance of the 22 resistance 138 is 300K;
Semi-fixed resistance:
The resistance of first semi-fixed resistance 139 is 100K, and the resistance of second semi-fixed resistance 140 is 10K;
Exclusion:
The resistance of first exclusion 141 is 4 * 10K, and the resistance of second exclusion 142 is 4 * 10K, and the resistance of the 3rd exclusion 143 is 4 * 22K, and the resistance of the 4th exclusion 144 is 4 * 10K;
Electric capacity:
The capacity of first electric capacity 145 is 100 μ F, the capacity of second electric capacity 146 is 0.01 μ F, the capacity of the 3rd electric capacity 147 is 100 μ F, the capacity of the 4th electric capacity 148 is 10 μ F, the capacity of the 5th electric capacity 149 is 10 μ F, the capacity of the 6th electric capacity 150 is 10 μ F, the capacity of the 7th electric capacity 151 is 22 μ F, the capacity of the 8th electric capacity 152 is 10 μ F, the capacity of the 9th electric capacity 153 is 10 μ F, the capacity of the tenth electric capacity 154 is 10 μ F, and the capacity of the 11 electric capacity 155 is 22 μ F, and the capacity of the 12 electric capacity 156 is 2200 μ F;
Diode:
The model of first diode 157, second diode 158, the 3rd diode 159, the 4th diode 160, the 5th diode 161, the 6th diode 162, the 7th diode 163, the 8th diode 164, the 9th diode 165, the tenth diode the 166, the 11 diode the 167, the 12 diode the 168, the 13 diode 169, the 14 diode 170 is 4148;
Voltage-stabiliser tube:
The specification of first voltage-stabiliser tube 171, second voltage-stabiliser tube 172, the 3rd voltage-stabiliser tube 173 is 0.5W 6.2V;
Light-emitting diode:
The specification of first light-emitting diode 174 is the red light emitting diodes of φ 5mm;
Controllable silicon:
The model of first controllable silicon 175 is BT169;
The three-terminal voltage-stabilizing pipe:
The model of the first three-terminal voltage-stabilizing pipe 176 is 7812:
Integrated package:
The model of first integrated package 177 is NE555, and the model of second integrated package 178 is LA2004, and the model of the 3rd integrated package 179 is LM324, and the model of the 4th integrated package 180 is LM324, and the model of the 5th integrated package 181 is LA2004;
Rectifier bridge:
The model of first rectifier bridge 182 is 2KB08;
Relay:
The model of first relay 183 is NT73-2C-10;
Transformer:
Intelligent control module with thyristor;
The model of intelligent control module with thyristor 105 is MZKS-JL-WY;
The three-phase ac contactor module:
The model of three-phase ac contactor module 104 is CJ20-220;
Temperature control tube:
The model of temperature control tube 190 is J0C-31F-75.
Operation principle.
Common most three-phase alternating-current motor runs on the state of load factor lower (50～60%).In this case, the power factor (PF) of motor operation is very low, suitably reduces the operating voltage of motor, can improve the power factor (PF) of motor operation, thereby reduce power consumption, reaches energy-conservation purpose.
Electricity-saving appliance of the present invention is selected " meeting an urgent need " and " startup " two states by diverter switch.When the electricity-saving appliance system breaks down, diverter switch is placed " meeting an urgent need ", contactor 104 adhesives, the 380V three-phase voltage of input leads directly to motor triple line input, and making maintenance when waiting to repair electricity-saving appliance, does not influence the production line operate as normal.
When diverter switch placed " startup ", electricity-saving appliance of the present invention entered operating state immediately.It is the source of stable pressure of 12V that the 4th transformer 187 provides 16V alternating voltage to the first rectifier bridge 182, the first three-terminal voltage-stabilizing pipes the 176, the 11 electric capacity the 155, the 12 electric capacity 156 to form direct voltage, is control device 100 power supplies.
First integrated package 177, first electric capacity 145, second electric capacity 146, the 7th resistance 123 are formed soft starting circuit, produce delay control signal.Delay adjustments is three minutes.Work as delay arrival time, first light-emitting diode 174 is luminous, start stepless step-down, the control signal that time delayed signal is given the control end 0～10V of intelligent control module with thyristor 105 by second integrated package 178, the 3rd integrated package 179 and peripheral resistance thereof, electric capacity, diode, thus the operating voltage of three-phase alternating-current motor is regulated and control in optimizing voltage range 150～380V.The output characteristic of described electricity-saving appliance is after operating voltage slowly rises to full voltage, and promptly soft start is delayed time and is depressured to the optimization magnitude of voltage that sets after three minutes.
Described electricity-saving appliance is provided with open-phase protection circuit, overheating protection circuit and the under-voltage compensating circuit of intelligent control module with thyristor 105.
Open-phase protection circuit is by first transformer 184; second transformer 185; the 3rd transformer 186 provides the phase shortage sampled signal; by four-core socket 3 '; four-core plug 3; the 4th diode 160; the 5th diode 161; the 6th diode 162; the 13 resistance 129; the 14 resistance 130; the 15 resistance 131 and first voltage-stabiliser tube 171; second voltage-stabiliser tube 172; the rectification of the 3rd voltage-stabiliser tube; filtering; overvoltage protection; current limliting; form three tunnel OR circuit; when arbitrary phase shortage sampled signal is 0; by the 5th integrated package 181; second integrated package 178 and peripheral circuit output drive signal thereof; drive 183 adhesives of first relay; make the phase line UA of three 380V; UB; UC is by the A.C. contactor of A.C. contactor module 104, respectively with three power supply output LA; LB; LC is communicated with.
Overheating protection circuit is finished sampling by temperature control tube 190.When intelligent control module with thyristor 105 overcurrents or when dispelling the heat bad (temperature reaches 75 ℃), temperature control tube 190 is promptly open-minded, + 12V voltage is through the 18 resistance 134, it is open-minded that the 19 resistance 135 triggers first controllable silicon 175, its positive pole becomes low level from high level, by the 3rd integrated package 179, second integrated package 178 and peripheral circuit cutoff thyristor intelligent control module 105 thereof, drive 183 adhesives of first relay simultaneously, make the phase line UA of three 380V, UB, UC is by the A.C. contactor of A.C. contactor module 104, respectively with three power supply output LA, LB, LC is communicated with.Thereby make intelligent control module with thyristor 105 obtain overtemperature protection.
Under-voltage compensating circuit is the phase line UA by three 380V, UB, UC is by three-phase power socket 2 ', three phase mains plug 2 respectively with first resistance 117, the 22 resistance 138, the 9th diode 165, the 8th electric capacity 152, second resistance 118, the 3rd resistance 119, the tenth diode 166, the 9th electric capacity 153, the 4th resistance 120, the 5th resistance 121, the 11 diode 167, the dividing potential drop current rectifying and wave filtering circuit that the tenth electric capacity 154 is formed connects, three direct current signals of this circuit output are by the 4th integrated package 180, the circuit for regulating and controlling of the 3rd integrated package 179 and peripheral circuit composition or door and intelligent control module with thyristor 105.When supply voltage is on the low side, the regulation and control output voltage, its regulation and control amplitude is finished by second semi-fixed resistance 140.
It is the series of products of MEKS-JL-WY that intelligent control module with thyristor 105 is selected model for use.
Claims (2)
1 A three-phase AC motor Saver, including thyristor intelligent control module (105),
Phase AC contactor module (104), the working state display device (103), the control panel work
Power supply (102) and the lack of phase signal source (101), thyristor intelligent control module (105) crystal-containing
Thyristor circuit module, three phase input and three phase output, with a five-pin socket (1 ')
Connecting line, three-phase power outlet (2 '), the thermostat tube (190) and with two-pin socket (6')
Connecting line, three-phase AC contactor module (104) with three-phase AC contactor, three phase line
Input, three phase line outputs and relays CJ 'normally open contact CJ, job status display
Display device (103) including a first pole three-throw switch (188), a second single-pole three-throw switch (189),
The fourth fuse (195), fan (194), the first indicator (191), the second indicator (192),
The third indicator (193), the relay CJ 'and with a two-pin socket (4') of cable, control
Power supply board (102) with the fourth transformer (187) and with two-pin socket (5 ') connection
Lines, lack of phase signal source (101) including a first transformer (184), a second transformer (185),
Third transformer (186), the first fuse (198), a second fuse (197), third party insurance
Fuse (196) and with a four-pin socket (3 ') of cable, three phase 380V line UA, UB,
UC respectively, and the three-phase AC contactor module (104) of the three-phase line input and thyristor chi
Can control module (105) of the three-phase line input connection, three phase 380V line UA, UB,
UC and zero, respectively, with the three-phase power line N socket (2 ') of the insert sleeve (23'), (22 '), (21')
And (20 ') connection, three phase 380V line UA, UB, UC any one phase and neutral
N are the working state display device (103) input terminal U 'and N' connected thyristors
Intelligent control module (105) of the three power outputs LA, LB, LC, respectively, the three-phase AC
Contactors (104) connected to the output of the three, temperature pipe (190) fixed to the thyristor Smart
Control module (105) of the radiator, thermostat tube (190) of the two output terminals respectively with two
Pin socket (6 ') of the insert sleeve (60') and (61 ') connected to the first transformer (184), p.
Two transformers (185), a third transformer (186) having one terminal of the primary winding by the first
A fuse (196), a second fuse (197), third fuse (198) and three for
Electrical output LA, LB, LC connector, first transformer (184), a second transformer (185),
A third transformer (186) of the primary winding and the other end connected to the zero line N, a first transformer
(184), a second transformer (185), a third transformer (186) one end of the secondary winding
With four-pin socket (3 ') of the insert sleeve (30') connected to the first transformer (184), and the second variable
Voltage regulator (185), a third transformer (186) other ends of the secondary winding and the four-pin plug
Block (3 ') of the insert sleeve (31'), (32 ') and (33') connected to the first single-pole three-throw switch (188)
The knife and the second single-pole three-throw switch (189) connected to the knife, the fourth fuse (195) jumper
At the input U 'and the first single-pole three-throw switch (188) between the knife and the third light (193)
Across the single-pole three-throw switch (188) of the knife and the input terminal N 'between the fan (194) and
The fourth transformer (187) of the primary coil in parallel across the first single-pole three-throw switch (188)
Throw the left and the input terminal N 'between the second single-pole three-throw switch (189) to the right and left throw throwing stars
Not with two-pin socket (4 ') of the insert sleeve (40') and (41 ') connected to the second indicator (192)
Relay CJ 'in parallel across the second single-pole three-throw switch (189) to the right throw and input
End N 'between the relay CJ' CJ normally open contacts connected across the second single-pole three-throw switch (189)
Throw throwing right and left between the first indicator (191) is connected across the first transformer (184) of the initial
Class ends of the coil, the fourth transformer (187), respectively, and both ends of the secondary winding two-pin plug
Block (5 ') of the plug cap (50') and (51 ') is connected, characterized in that it further comprises a control
Device (100), the control device (100) includes soft-start delay control circuit, the module phase
Overheat protection circuit, the power supply voltage compensation circuit, the resistor: a first resistor (117), a second
Resistor (118), a third resistor (119), a fourth resistor (120), a fifth resistor (121),
A sixth resistor (122), the seventh resistor (123), the eighth resistor (124), the ninth resistor (125),
Tenth resistor (126), the eleventh resistor (127), the twelfth resistor (128), the thirteenth electric
Resistance (129), the fourteenth resistor (130), the fifteenth resistor (131), the sixteenth resistor (132),
Seventeenth resistor (133), eighteenth resistor (134), nineteenth resistor (135), twenty-
Resistor (136), the twenty-first resistor (137), the twenty-second resistor (138), semi-variable
Resistance: The first semi-variable resistor (139), a second semi-variable resistor (140), exclusion: the first row
Resistance (141), second exclusion (142), third exclusion (143), fourth exclusion (144), electricity
Content: a first capacitor (145), a second capacitor (146), a third capacitor (147), the fourth capacitor
(148), the fifth capacitor (149), sixth capacitor (150), seventh capacitor (151), eighth
Capacitor (152), ninth capacitor (153), tenth capacitor (154), eleventh capacitor (155),
Twelfth capacitor (156), the diode: a first diode (157), a second diode (158),
Third diode (159), fourth diode (160), fifth diode (161), sixth two
Diode (162), seventh diode (163), eighth diode (164), ninth diode (165),
Tenth diode (166), eleventh diode (167), the twelfth diode (168), p.
Thirteen diode (169), the fourteenth diode (170), the regulator: a first regulator (171),
A second regulator (172), a third regulator (173), light emitting diodes: a first light emitting diode
Tube (174), SCR: first SCR (175), three-terminal regulator: The first three-terminal regulator
Tube (176), manifold: first manifold (177), a second manifold (178), third episode
Into blocks (179), fourth manifold (180), fifth manifold (181), rectifier bridge: first
Rectifier bridge (182), relay: first relay (183) composed of two pin plug (5) of the
Pin (50), (51) respectively to the first rectifier bridge (182) 2,3 pin connector, the first full
Stream Bridge (182) of a foot, the twelfth capacitor (156) of the cathode, the first three terminal regulator (176)
1 foot and then, the first rectifier bridge (182) 4-foot, twelfth capacitor (156) is negative,
Eleventh capacitor (155) is negative, the first three terminal regulator (176) 2-pin grounded, the first
Thirteen terminal regulator (176) 3 feet, eleventh capacitor (155) connected to the positive and the first
Three terminal regulator (176) of the +12 V output terminal with the first manifold (177) to four feet,
First manifold (177) 8-pin, sixteenth resistor (132) to the left, five-pin plug (1)
The pin (10), a first semi-variable resistor (139) and the right end of the sliding arm, the second half of the variable
Resistance (140) of the upper end of the fourth manifold (180) of the 4-pin, a first exclusion (141) 1
Feet, the second exclusion (142) 2 feet, the second exclusion (142) 3 feet, the fifth Manifold
(181) 11-foot, fifth manifold (181) 12-foot, fifth manifold (181)
13 feet, the seventh resistor (123) of the upper end of the first relay (183) 2 feet, the first
Three diodes (159) of the negative electrode, the eighth resistor (124) of the upper, third exclusion (143)
5 feet, the ninth resistor (125) of the upper end of the two-pin plug (6) of the pin (60) connected
Respectively, and four ground GND pin plug (2) of the pin (20), the eighteenth resistor (134)
The left end of the first thyristor (175) negative, the fourth capacitor (148) is negative, the fifth
Capacitor (149) of the negative electrode, the sixth capacitor (150) is negative, the fifth manifold (181)
The 8-pin, the second semi-variable resistor (140) of the lower end of the first capacitor (145) is negative,
First light emitting diode (174) of the negative electrode, the twenty-resistance (136) of the left end of the eighth power
Yung (152) negative, the ninth capacitor (153) is negative, the tenth capacitor (154) Negative
Pole, four-pin plug (3) of the pin (30), seventh capacitor (151) is negative, five-pin plug
Head (1) of the pin (11), five-pin plug (1) of the pin (12), a second capacitor (146)
The left, the first manifold (177) of a foot, the fourth exclusion (144) of a foot, the fourth
Exclusion (144) 2 feet, the fourth exclusion (144) 3 feet, the fourth exclusion (144) 4
Pin connector, the fourth exclusion (144) 5-feet, the first manifold (177) to three feet and then,
The first relay (183) of a foot, a third diode (159) is positive, a second manifold
(178) 11 feet, and the second manifold (178) to 12 feet and then, the seventh resistor (123)
The lower end of the first capacitor (145) of the cathode, a first manifold (177) of 2 feet, the first
Manifold (177) 6 feet and then, the first manifold (177) to five feet, and the second capacitor (146)
The right and then, a second manifold (178) to 5 feet, and the second manifold (178) 6 feet,
The second manifold (178) to 10 feet, and the second manifold (178) to 13 feet, and the third exclusion
(143) of a foot, and the third exclusion (143) 2 feet and then, the second manifold (178)
14 feet, the eighth resistor (124) of the lower end of the first light emitting diode (174) of the anode
And then, a second manifold (178) 7-foot, second exclusion (142) 4-foot, second row
Resistance (142) 5 feet and then, a second manifold (178), 15 feet, and the second manifold (178)
Of 16 feet, the ninth resistor (125) of the lower end of the tenth resistor (126) of the upper end of the first
Diode (157) and then the negative, the third exclusion (143) 3 feet, the third exclusion (143)
4 feet, a third manifold (179) 6-foot, third manifold (179) to 10 feet,
First diode (158) is positive, the eighth diode (164) is positive and then, two-pin plug
Head (4) of the pin (40), two pin plug (4) of the pin (41), the first relay (183)
4 feet, the first relay (183) 3 feet and then, the tenth resistor (126) of the lower end,
A sixth resistor (122) of the upper end, a first diode (157) of the cathode, a third capacitor (147)
A positive electrode, a twenty-first resistor (137) connected to the left and the sixth resistor (122) of the lower end,
Twelfth diode (168) is positive, the thirteenth diode (169) is positive, the fourteenth
Diode (170) is positive and then, twenty-first resistor (137) to the right end of the eleventh power
Resistance (127) of the lower end of the third manifold (179) to 2 feet and then, the first semi-variable resistor
(139) left end of the twelfth resistor (128) of the upper end of the third manifold (179) 5
Feet and then, the twelfth resistor (128) of the lower end of the eleventh resistor (127) of the upper end of the first
Three manifold (179) of a foot and then, the third manifold (179) to 13 feet, Episode
Into blocks (179) of 14 feet, eighth diode (164) and connected to the negative terminal of the third manifold
(179) 3-foot, twenty-resistance (136) of the left, the first exclusion (141) 2
Feet and then, a third manifold (179) to 7 feet, a second diode (158) is negative and then,
The third manifold (179) 8-pin, third manifold (179) 9-foot, five-pin plug (1)
The pin (12), five-pin plug (1) of the pin (13) and then, the third manifold (179)
The (12) feet, seventeenth resistor (133) to the right end of the seventh diode (163) is negative,
Seventh capacitor (151) connected to the left and the seventh diode (163) is positive, seventeenth electricity
Resistance (133) of the left end of the sixteenth resistor (132) of the right side, a first silicon (175)
The positive and then, a first thyristor (175) of the trigger electrode, eighteenth resistor (134) to the left
End of the nineteenth resistor (135) and connected to the left end of the nineteenth resistor (135) to the right end, two
Pin plug (6) of the pin (61) and then, the fifth manifold (181) to four feet, Episode
Into blocks (181) of 16 feet, the first exclusion (141) 5 feet and then, the fifth manifold (181)
6 feet, fifth manifold (181) of 14 feet, the first exclusion (141) 3 feet and then,
Fifth Manifold (181) 5-foot, fifth manifold (181) to 15 feet, the first exclusion
(141) of a foot, the first exclusion (141) 4-foot, second exclusion (142) 2 feet,
The second exclusion (142) 3 feet and then, the fifth manifold (181) to 11 feet, Episode
Into blocks (181) 12-foot, fifth manifold (181) to 13 feet, the second exclusion (142)
The one foot and then the fifth manifold (181) of a foot, the fifth manifold (181) 2 feet,
Fifth manifold (181) 3-pin, a first Zener diode (171) of the cathode, the second steady
Pressure diode (172) of the cathode, a third Zener diode (173) connected to the positive and the first
Zener diodes (171) of the negative electrode, a second Zener diode (172) is negative, a third stable
Voltage diode (173), respectively, and the thirteenth negative resistance (129) of the upper end of the fourteenth electricity
Resistance (130) of the upper end of the fifteenth resistor (131) connected to the upper, the thirteenth resistor (129)
The lower end of the fourth capacitor (148) of the cathode, the fourth diode (160) the negative and then,
Fourteenth resistor (130) of the lower end of the fifth capacitor (149) of the cathode, the fifth diode (161)
The negative and then, the fifteenth resistor (131) of the lower end of the sixth capacitor (150) of the cathode,
Sixth diode (162) the negative and then, the sixth diode (162) of the cathode, the fifth two
Diode (161) is positive, and the fourth diode (160), respectively, with four positive pin plug (3)
The pin (31), (32), (33) connected to the fourth manifold (180) of 14 feet, the fourth
Manifold (180) 7-foot, fourth manifold (180), respectively, and the twelfth of a foot diode
Tube (168) is negative, the thirteenth diode (169) is negative, the fourteenth diode (170)
The negative connection, the fourth manifold (180) to 2 feet, the fourth manifold (180) to 6 feet,
The fourth manifold (180) of 13 feet, and the second semi-variable resistor (140) of the sliding arm, and then,
Fourth manifold (180) to 3 feet, eleventh diode (167) is negative, the tenth capacitor
(154) connected to the positive and the fourth manifold (180) to 5 feet, the ninth capacitor (153)
The positive electrode, the tenth diode (166) connected to a negative electrode and the fourth manifold (180) 12
Feet, the eighth capacitor (153) is positive, the ninth diode (165) and then the negative, the ninth
Diode (165) a positive electrode, a first resistor (117) of the lower end of the twenty-second resistor (138)
The left and then, the tenth diode (166) of the positive electrode, a third resistor (119) of the lower end,
A second resistor (118) connected to the left and the eleventh diode (167) of the cathode, the fifth power
Resistance (121) of the lower end of the fourth resistor (120) and then the left, four-pin plug (2) of the
Pin (21), four-pin plug (2) of the pin (22), four-pin plug (2) of the pin (23)
Respectively, and the twenty-second resistor (138) right side, a second resistor (118) of the right side, the fourth power
Resistor (120) connected to the right end of the four-pin plug (2) of the pin (20) to ground, thyristor Chi
Can control module (105) of the five-pin socket (1 ') of the insert sleeve (10'), (11 '), (12'),
(13 '), (14'), respectively, and the control device (100) of the five-pin plug (1) of the pin (10),
(11), (12), (13), (14) plug connection, three-phase power socket (2 ') of the plug cap (20'),
(21 '), (22') and (23 '), respectively, and the control device (100) four-pin plug socket (2)
The pin (20), (21), (22) and (23) plug connection, lack of phase signal source (101)
The four-pin socket (3 ') of the insert sleeve (30'), (31 '), (32') and (33 ') respectively, and control
System device (100) on a four-pin plug (3) of the pin (30), (31), (32) and (33)
Plug connection, work status display device (103) of the two-pin socket (4 ') of the insert sleeve (40')
And (41 '), respectively, and the control device (100) on a two pin plug (4) of the pin (40)
And (41) plug connector, the power supply control board (102) of the two-pin socket (5 ') of the plug
Sets (50 ') and (51'), respectively, and the control device (100) of the two-pin plug (5) of the pin
(50) and (51) plug connection, thermostat tube (190) of the two-pin socket (6 ') of the insert sets
(60 ') and (61'), respectively, and Control (100) of the two-pin plug (6) of the pin (60) and (61)
Plug connection.
...
2, electric saver of three-phase ac motor according to claim 1 is characterized in that, the components and parts that adopted are:
Resistance:
The resistance of first resistance (117) is 12K, the resistance of second resistance (118) is 300K, the resistance of the 3rd resistance (119) is 12K, the resistance of the 4th resistance (120) is 300K, the resistance of the 5th resistance (121) is 12K, the resistance of the 6th resistance (122) is 1K, the resistance of the 7th resistance (123) is 2K, the resistance of the 8th resistance (124) is 4.7K, the resistance of the 9th resistance (125) is 4.7K, the resistance of the tenth resistance (126) is 1K, the resistance of the 11 resistance (127) is 100K, the resistance of the 12 resistance (128) is 33K, the resistance of the 13 resistance (129) is 4.7K, the resistance of the 14 resistance (130) is 4.7K, the resistance of the 15 resistance (131) is 4.7K, the resistance of the 16 resistance (132) is 3K, the resistance of the 17 resistance (133) is 200K, the resistance of the 18 resistance (134) is 2K, the resistance of the 19 resistance (135) is 10K, the resistance of the 20 resistance (136) is 4.7K, and the resistance of the 21 resistance (137) is 20K, and the resistance of the 22 resistance (138) is 300K;
Semi-fixed resistance:
The resistance of first semi-fixed resistance (139) is 100K, and the resistance of second semi-fixed resistance (140) is 10K;
Exclusion;
The resistance of first exclusion (141) is 4 * 10K, and the resistance of second exclusion (142) is 4 * 10K, and the resistance of the 3rd exclusion (143) is 4 * 22K, and the resistance of the 4th exclusion (144) is 4 * 10K;
Electric capacity:
The capacity of first electric capacity (145) is 100 μ F, and the capacity of second electric capacity (146) is 0.01 μ F,
The capacity of the 3rd electric capacity (147) is 100 μ F, the capacity of the 4th electric capacity (148) is 10 μ F, the capacity of the 5th electric capacity (149) is 10 μ F, the capacity of the 6th electric capacity (150) is 10 μ F, and the capacity of the 7th electric capacity (151) is 22 μ F, and the capacity of the 8th electric capacity (152) is 10 μ F, the capacity of the 9th electric capacity (153) is 10 μ F, the capacity of the tenth electric capacity (154) is 10 μ F, and the capacity of the 11 electric capacity (155) is 22 μ F, and the capacity of the 12 electric capacity (156) is 2200 μ F;
Diode:
The model of first diode (157), second diode (158), the 3rd diode (159), the 4th second tube sheet (160), the 5th diode (161), the 6th diode (162), the 7th diode (163), the 8th diode (164), the 9th diode (165), the tenth diode (166), the 11 diode (167), the 12 diode (168), the 13 diode (169), the 14 diode (170) is 4148;
Voltage-stabiliser tube:
The specification of first voltage-stabiliser tube (171), second voltage-stabiliser tube (172), the 3rd voltage-stabiliser tube (173) is 0.5W 6.2V;
Light-emitting diode:
The specification of first light-emitting diode (174) is the red light emitting diodes of φ 5mm;
Controllable silicon:
The model of first controllable silicon (175) is BT169;
The three-terminal voltage-stabilizing pipe:
The model of the first three-terminal voltage-stabilizing pipe (176) is 7812;
Integrated package:
The model of first integrated package (177) is NE555, and the model of second integrated package (178) is LA2004, and the model of the 3rd integrated package (179) is LM324, and the model of the 4th integrated package (180) is LM324, and the model of the 5th integrated package (181) is LA2004;
Rectifier bridge:
The model of first rectifier bridge (182) is 2KB08;
Relay:
The model of first relay (183) is NT73-2C-10;
Transformer:
First transformer (184) is the phase shortage transformer, and second transformer (185) is the phase shortage transformer,
The 3rd transformer (186) is the phase shortage transformer, and the 4th transformer (187) is a power transformer;
Intelligent control module with thyristor:
The model of intelligent control module with thyristor (105) is MZKS-JL-WY;
The three-phase ac contactor module:
The model of three-phase ac contactor module (104) is CJ20-220;
Temperature control tube;
The model of temperature control tube (190) is JOC-31F-75.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2005100248173A CN100340058C (en) | 2005-04-01 | 2005-04-01 | Three-phase AC. electric motorelectricity-saver |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2005100248173A CN100340058C (en) | 2005-04-01 | 2005-04-01 | Three-phase AC. electric motorelectricity-saver |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1677834A true CN1677834A (en) | 2005-10-05 |
| CN100340058C CN100340058C (en) | 2007-09-26 |
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| Application Number | Title | Priority Date | Filing Date |
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| CNB2005100248173A Expired - Fee Related CN100340058C (en) | 2005-04-01 | 2005-04-01 | Three-phase AC. electric motorelectricity-saver |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102340124A (en) * | 2010-07-26 | 2012-02-01 | 苏州益而益电器制造有限公司 | Electrical wiring protection device |
| CN102710213A (en) * | 2012-07-06 | 2012-10-03 | 山东聊城三箭节电设备有限公司 | Intelligent power-saving starter for motor |
Family Cites Families (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2128799Y (en) * | 1992-05-17 | 1993-03-24 | 重庆大学 | Parameter voltage change induction motor and its controlling apparatus |
| GB2287363B (en) * | 1994-03-08 | 1997-12-17 | Control Tech Plc | Suppression of radio frequency emissions |
| MY125213A (en) * | 1999-11-12 | 2006-07-31 | Lg Electronics Inc | "device and method for controlling supply of current and static capacitance to compressor" |
| CN2430812Y (en) * | 2000-05-26 | 2001-05-16 | 李恒三 | Automatic power saving controller for oil pump motor |
| CN2527033Y (en) * | 2001-08-03 | 2002-12-18 | 李綦伟 | Energy-saving running apparatus for motor |
| CN2783629Y (en) * | 2005-04-01 | 2006-05-24 | 上海匣承机电科技有限公司 | Three-phase ac motor energy-saving device |
-
2005
- 2005-04-01 CN CNB2005100248173A patent/CN100340058C/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102340124A (en) * | 2010-07-26 | 2012-02-01 | 苏州益而益电器制造有限公司 | Electrical wiring protection device |
| CN102710213A (en) * | 2012-07-06 | 2012-10-03 | 山东聊城三箭节电设备有限公司 | Intelligent power-saving starter for motor |
| CN102710213B (en) * | 2012-07-06 | 2014-08-13 | 山东聊城三箭节电设备有限公司 | Intelligent power-saving starter for motor |
Also Published As
| Publication number | Publication date |
|---|---|
| CN100340058C (en) | 2007-09-26 |
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