CN114624489A - High-voltage charge control high-power supply low-voltage control device - Google Patents
High-voltage charge control high-power supply low-voltage control device Download PDFInfo
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- CN114624489A CN114624489A CN202011454999.9A CN202011454999A CN114624489A CN 114624489 A CN114624489 A CN 114624489A CN 202011454999 A CN202011454999 A CN 202011454999A CN 114624489 A CN114624489 A CN 114624489A
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- 238000012545 processing Methods 0.000 claims abstract description 27
- 238000004891 communication Methods 0.000 claims abstract description 13
- 239000003990 capacitor Substances 0.000 claims description 18
- 238000001914 filtration Methods 0.000 claims description 8
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- 230000007246 mechanism Effects 0.000 claims description 6
- 230000005855 radiation Effects 0.000 claims description 5
- 239000002131 composite material Substances 0.000 claims description 3
- 239000004745 nonwoven fabric Substances 0.000 claims description 3
- 239000000123 paper Substances 0.000 claims description 3
- 229920000728 polyester Polymers 0.000 claims description 3
- 238000005259 measurement Methods 0.000 abstract description 9
- 230000007547 defect Effects 0.000 abstract description 3
- 238000009423 ventilation Methods 0.000 description 5
- 230000017525 heat dissipation Effects 0.000 description 4
- 239000000428 dust Substances 0.000 description 3
- 238000012986 modification Methods 0.000 description 3
- 230000004048 modification Effects 0.000 description 3
- 238000001816 cooling Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000009825 accumulation Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000011217 control strategy Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000003628 erosive effect Effects 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 239000010419 fine particle Substances 0.000 description 1
- 238000009413 insulation Methods 0.000 description 1
- 230000009545 invasion Effects 0.000 description 1
- 238000010295 mobile communication Methods 0.000 description 1
- 230000002035 prolonged effect Effects 0.000 description 1
- 230000000630 rising effect Effects 0.000 description 1
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R11/00—Electromechanical arrangements for measuring time integral of electric power or current, e.g. of consumption
- G01R11/56—Special tariff meters
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02H—EMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS
- H02H3/00—Emergency protective circuit arrangements for automatic disconnection directly responsive to an undesired change from normal electric working condition with or without subsequent reconnection ; integrated protection
- H02H3/08—Emergency protective circuit arrangements for automatic disconnection directly responsive to an undesired change from normal electric working condition with or without subsequent reconnection ; integrated protection responsive to excess current
- H02H3/10—Emergency protective circuit arrangements for automatic disconnection directly responsive to an undesired change from normal electric working condition with or without subsequent reconnection ; integrated protection responsive to excess current additionally responsive to some other abnormal electrical conditions
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02H—EMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS
- H02H3/00—Emergency protective circuit arrangements for automatic disconnection directly responsive to an undesired change from normal electric working condition with or without subsequent reconnection ; integrated protection
- H02H3/20—Emergency protective circuit arrangements for automatic disconnection directly responsive to an undesired change from normal electric working condition with or without subsequent reconnection ; integrated protection responsive to excess voltage
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- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
- H05K7/00—Constructional details common to different types of electric apparatus
- H05K7/20—Modifications to facilitate cooling, ventilating, or heating
- H05K7/20009—Modifications to facilitate cooling, ventilating, or heating using a gaseous coolant in electronic enclosures
- H05K7/20136—Forced ventilation, e.g. by fans
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- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
- H05K7/00—Constructional details common to different types of electric apparatus
- H05K7/20—Modifications to facilitate cooling, ventilating, or heating
- H05K7/20009—Modifications to facilitate cooling, ventilating, or heating using a gaseous coolant in electronic enclosures
- H05K7/20209—Thermal management, e.g. fan control
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- Remote Monitoring And Control Of Power-Distribution Networks (AREA)
Abstract
The invention discloses a high-pressure-cost control and high-power-supply low-voltage control device, which comprises a base and a box body, wherein the base is provided with a plurality of grooves; the box body is internally provided with a controller, an acquisition circuit, a processing circuit, a switch control circuit and a three-phase metering unit. The input end of the high-voltage power supply is connected with the input end of the switch control circuit; the output end of the switch control circuit is connected with a common voltage terminal of the three-phase metering unit; the three-phase input end of the acquisition circuit is connected with the three-phase output end of the switch control circuit; the acquisition circuit is connected with the processing circuit; the three-phase output end of the acquisition circuit is respectively connected with the three-phase metering unit and the controller; the controller is in communication connection with the three-phase metering unit and is in control connection with the switch control circuit; the controller is also in communication connection with the remote control terminal, receives the control instruction and feeds back the metering data. The device can be applied to high-voltage charge control and has simple structure; the defect of inaccurate measurement caused by interference factors in the current and voltage information can be eliminated; the intelligent control circuit realizes the functions of on-off, fee control, remote measurement and remote control of the circuit.
Description
Technical Field
The invention relates to the technical field of charge control devices, in particular to a high-voltage charge control high-power supply low-voltage control device.
Background
At present, cost control devices for household use are more, and the technology is mature. But the function is comparatively single, only possesses the measurement function, and the measurement function is influenced by the internal temperature of box easily, causes the metering error, and then causes the electric quantity loss.
In addition, in the prior art, a high-voltage cost control device is not a mature product, and generally stays in a testing and experiment stage, so that the problems of measurement accuracy, reasonable layout, insulation, control and the like of internal devices need to be considered in the high-voltage cost control.
The above problems of high-voltage charge control are urgently to be solved.
Disclosure of Invention
In view of the above, the present invention has been made to provide a high power supply low control device applied to high voltage cost control, which overcomes or at least partially solves the above problems.
The embodiment of the invention provides a high-power supply low-voltage control device applied to high-voltage charge control, which comprises a base; a box body arranged on the base;
the box body is internally provided with a controller, an acquisition circuit, a processing circuit, a switch control circuit and a three-phase metering unit;
the input end of the high-voltage power supply is connected with the input end of the switch control circuit; the output end of the switch control circuit is connected with a common voltage terminal of the three-phase metering unit and is output through a high-voltage line; the three-phase input end of the acquisition circuit is connected with the three-phase output end of the switch control circuit and is used for acquiring current and voltage information;
the acquisition circuit is connected with the processing circuit and is used for filtering interference factors in the current and voltage information;
the three-phase output end of the acquisition circuit is respectively connected with the three-phase metering unit and the controller; the controller is in communication connection with the three-phase metering unit and is in control connection with the switch control circuit; the controller is also in communication connection with the remote control terminal, receives the control instruction and feeds back the metering data.
In one embodiment, at least one side surface of the box body is formed by two layers of structures, and a gap with a preset distance is formed between the two layers of structures; wherein the two-layer structure is provided with a plurality of vent holes; the vent holes on the two-layer structure are arranged in a staggered manner;
an exhaust area is arranged on one side of the box body close to the top, an air inlet area is arranged on the other side of the box body opposite to the exhaust area, and the air inlet area is close to the bottom of the box body.
In one embodiment, the air intake zone is provided with a filtering mechanism;
the filter mechanism comprises a housing; a HEPA standard filter screen is arranged on the housing; the filter screen is made of PP filter paper, glass fiber, composite PP PET filter paper, melt-blown polyester non-woven fabric or melt-blown glass fiber; and an air inlet machine is arranged at the inner side of the filter screen.
In one embodiment, a temperature sensor connected with the controller is further arranged in the box body;
the exhaust area is provided with an exhaust fan connected with the controller; the exhaust fan is a cross-flow fan, and an air outlet grid is arranged on the outer side of the exhaust area.
In one embodiment, the top in the box body is further provided with: a heat radiation fan; the heat radiation fan is connected with the controller.
In one embodiment, the acquisition circuit comprises:
three current acquisition transformers T1, T2 and T3 which are connected in parallel; the input end of the acquisition transformer T1 is connected with a first high-voltage power supply output by the switch control circuit, and the output end of the acquisition transformer T1 is sequentially connected with a resistor R1 and a capacitor C1 in series;
the input end of the acquisition transformer T2 is connected with the second phase of the high-voltage power supply output by the switch control circuit, and the output end of the acquisition transformer T2 is sequentially connected with a resistor R2 and a capacitor C2 in series;
the input end of the acquisition transformer T3 is connected with the third phase of the high-voltage power supply output by the switch control circuit, and the output end of the acquisition transformer T3 is sequentially connected with a resistor R3 and a capacitor C3 in series;
one end of the resistor R4 is connected with a circuit between the output end of the acquisition transformer T1 and the resistor R1, and the other end of the resistor R4 is connected with the input end of the processing circuit;
one end of the resistor R5 is connected with a circuit between the output end of the acquisition transformer T2 and the resistor R2, and the other end of the resistor R5 is connected with the input end of the processing circuit;
one end of the resistor R6 is connected with a circuit between the output end of the acquisition transformer T3 and the resistor R3, and the other end of the resistor R6 is connected with the input end of the processing circuit;
the other end of the capacitor C1, the other end of the capacitor C2 and the other end of the capacitor C3 are all connected to AGND.
In one embodiment, the three-phase output end of the processing circuit is respectively connected with the first phase current negative input terminal, the second phase current negative input terminal and the third phase current negative input terminal of the three-phase metering unit.
In one embodiment, the switch control circuit is a high voltage circuit breaker.
In one embodiment, the box body shell is also provided with a display screen; the display screen is connected with the controller.
In one embodiment, the top panel of the box has an outwardly extending extension;
the base has at least 3 feet or one side of the box body has a fixing structure.
The technical scheme provided by the embodiment of the invention has the beneficial effects that at least:
the embodiment of the invention provides a high-power supply low-control device applied to high-voltage charge control, which comprises a base; a box body arranged on the base; the box body is internally provided with a controller, an acquisition circuit, a processing circuit, a switch control circuit and a three-phase metering unit. The device can be applied to high-voltage charge control, and has a simple structure; the defect of inaccurate measurement caused by interference factors in the current and voltage information can be eliminated; the intelligent control circuit can be switched on and off, and the functions of charge control, remote measurement and remote control can be realized.
Furthermore, a heat dissipation structure is arranged on the box body, so that the metering error caused by temperature rise is eliminated; meanwhile, the filtering mechanism is arranged to prevent dust from entering, and the service life of each device in the box body is prolonged.
Additional features and advantages of the invention will be set forth in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. The objectives and other advantages of the invention will be realized and attained by the structure particularly pointed out in the written description and claims hereof as well as the appended drawings.
The technical solution of the present invention is further described in detail by the accompanying drawings and embodiments.
Drawings
The accompanying drawings, which are included to provide a further understanding of the invention and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the description serve to explain the principles of the invention and not to limit the invention. In the drawings:
FIG. 1 is a schematic view of an embodiment of a high voltage cost control and high power supply low voltage control device according to the present invention;
FIG. 2 is a block diagram of a high voltage cost control and high power supply low voltage control device according to an embodiment of the present invention;
FIG. 3 is a schematic cross-sectional view of a case provided in an embodiment of the present invention;
FIG. 4 is a schematic diagram of an acquisition circuit according to an embodiment of the present invention;
in the drawings, 1-base; 2-a box body; 3-a remote control terminal; 21-a controller; 22-acquisition circuitry; 23-a processing circuit; 24-a switch control circuit; 25-a three-phase metering unit; 26-a vent hole; 27-Heat dissipation Fan.
Detailed Description
Exemplary embodiments of the present disclosure will be described in more detail below with reference to the accompanying drawings. While exemplary embodiments of the present disclosure are shown in the drawings, it should be understood that the present disclosure may be embodied in various forms and should not be limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the scope of the disclosure to those skilled in the art.
Referring to fig. 1, a high power supply and low control device applied to high voltage cost control according to an embodiment of the present invention includes a base 1; a box body 2 arranged on the base 1; referring to fig. 2, a controller 21, an acquisition circuit 22, a processing circuit 23, a switch control circuit 24 and a three-phase metering unit 25 are arranged in the box body 2;
the input end of the high-voltage power supply is connected with the input end of the switch control circuit 24; the output end of the switch control circuit 24 is connected with a common voltage terminal of the three-phase metering unit 25 and is output through a high-voltage line; the three-phase input end of the acquisition circuit 22 is connected with the three-phase output end of the switch control circuit 24 and is used for acquiring current and voltage information; the acquisition circuit 22 is connected with the processing circuit 23 and is used for filtering interference factors in the current and voltage information; the three-phase output end of the acquisition circuit 22 is respectively connected with the three-phase metering unit 25 and the controller 21; the controller 21 is in communication connection with the three-phase metering unit 25, and the controller 21 is in control connection with the switch control circuit 24; the controller 24 is also connected with the remote control terminal 3 in a wireless communication mode, receives control instructions and feeds back metering data.
The controller 21 has a WIFI module and/or a public mobile communication network communication module (which may be 2G, 3G, 4G, or 5G communication modules of various standards), and implements wireless communication.
The controller 21 may be a CPU or a 51-series single chip microcomputer, and has a wireless communication module, and may be in communication connection with the remote control terminal 3 to receive a control instruction or feed back metering data. The switch control circuit is preferably a high-voltage circuit breaker, can cut off or close no-load current and load current in a high-voltage circuit, can actively cut off overload current and short-circuit current by playing the role of a protection device through a relay when a system fails (even if a cut-off signal is not received), has a quite perfect arc extinguishing structure and enough current breaking capacity, and provides another layer of guarantee for protecting the circuit.
The working principle of the device is as follows: the high-voltage power supply is input into the box body and is connected with the switch control circuit, and the output end of the high-voltage power supply is respectively connected with the acquisition circuit and the three-phase metering unit; the acquisition circuit can stably acquire current and voltage information and can play a role in overcurrent protection; under the assistance of the processing circuit, various harmonic waves, interference when the switch is closed and opened, surge and other interference factors can be filtered; transmitting the processed current and voltage information to a controller; for example, when the acquired current and voltage information exceeds a preset threshold, a cut-off signal can be output to the switch control circuit, so that the high-voltage power supply input circuit is cut off, and the safe operation of the whole circuit is guaranteed; damage to the device due to overvoltage or overcurrent can be avoided. The three-phase metering unit can realize accurate metering of high-voltage charge control; and transmitting the metering data to the controller; the controller can further send the current and voltage information acquired in real time and the metering data to the remote control terminal. The remote control terminal can predict that the over-current or over-voltage can be spread to the high-voltage charge control high-voltage supply low-voltage control device in the target area according to the monitored big data, and can send a control cut-off instruction to the controller before the spread, and the controller executes the instruction to enable the switch control circuit to execute actions and cut off the circuit.
The device can be applied to high-voltage charge control, and has a simple structure; the defect of inaccurate measurement caused by interference factors in the current and voltage information can be eliminated; the intelligent control circuit can be switched on and off, and the functions of charge control, remote measurement and remote control can be realized.
In one embodiment, as shown in fig. 3, in order to reduce the accumulation of heat inside the case, at least one side of the case 2 is formed of a two-layer structure with a gap of a predetermined distance therebetween; wherein, the two layers of structures are provided with a plurality of vent holes 26; the ventilation holes 26 on the two-layer structure are arranged in a staggered manner; wind enters the ventilation gap through the plurality of outer ventilation holes, and then enters the box body through the plurality of inner ventilation holes, so that good heat dissipation is realized. Due to the fact that the inner vent hole 26 and the outer vent hole 26 are arranged in a staggered mode, when the ventilation and heat dissipation effects are achieved, partial dust can be effectively prevented from directly entering the interior of the box body.
In addition, an exhaust area (schematically shown in fig. 1) may be provided on one side of the box 2 near the top, and an intake area (not shown) may be provided on the other side of the box opposite to the exhaust area, the intake area being near the bottom of the box. The principle of hot air rising can be fully utilized to lead out heat.
Furthermore, in order to reduce dust entering the box body, a filtering mechanism can be arranged in the air inlet area; such as a HEPA standard filter screen; it may be PP filter paper, glass fiber, composite PP PET filter paper, melt-blown polyester non-woven fabric or melt-blown glass fiber. The effective rate of 0.1 micron and 0.3 micron reaches 99.7 percent, air can be ensured to pass through, but fine particles cannot pass through; thereby equivalently prolonging the service life of the equipment in the box body.
In addition, in order to realize intelligent heat dissipation, a temperature sensor (not shown in the figure) connected with the controller 21 can be arranged in the box body 2; an exhaust fan connected with the controller 21 is arranged in the exhaust area; a cross-flow fan can be optimized, and an air outlet grid is arranged outside the exhaust area; an air inlet machine connected with the controller 21 is arranged in the air inlet area, and a centrifugal fan can be selected preferably; the top in the box still is equipped with: and a heat radiation fan 27 connected to the controller 21. The controller can gradually control the start of the air inlet fan, the exhaust fan and the cooling fan according to the temperature in the box body collected by the temperature sensor and the control strategy, so that the optimal cooling effect is realized.
In one embodiment, referring to fig. 4, the acquisition circuit includes:
three current acquisition transformers T1, T2 and T3 which are connected in parallel; the input end of the acquisition transformer T1 is connected with the first high-voltage power supply output by the switch control circuit 24, and the output end of the acquisition transformer T1 is sequentially connected with the resistor R1 and the capacitor C1 in series; the input end of the acquisition transformer T2 is connected with the second phase of the high-voltage power supply output by the switch control circuit 24, and the output end of the acquisition transformer T2 is sequentially connected with the resistor R2 and the capacitor C2 in series; the input end of the acquisition transformer T3 is connected with the third phase of the high-voltage power supply output by the switch control circuit 24, and the output end of the acquisition transformer T3 is sequentially connected with the resistor R3 and the capacitor C3 in series; one end of the resistor R4 is connected with a circuit between the output end of the acquisition transformer T1 and the resistor R1, and the other end of the resistor R4 is connected with the input end of the processing circuit; one end of the resistor R5 is connected with a circuit between the output end of the acquisition transformer T2 and the resistor R2, and the other end of the resistor R5 is connected with the input end of the processing circuit; one end of the resistor R6 is connected with a circuit between the output end of the acquisition transformer T3 and the resistor R3, and the other end of the resistor R6 is connected with the input end of the processing circuit; the other end of the capacitor C1, the other end of the capacitor C2 and the other end of the capacitor C3 are all connected to AGND. The acquisition circuit can realize stable acquisition of current and voltage information and can play a role in overcurrent protection.
Three output ends of the processing circuit are respectively connected with a first phase current negative input terminal, a second phase current negative input terminal and a third phase current negative input terminal of the three-phase metering unit. The processing circuit includes: a shaping circuit, a protection circuit and a zero offset circuit; when the voltage of the power supply in the acquisition circuit exceeds a specified value, the protection circuit plays a role in protection. The processing circuit can filter various harmonic waves, interference when the switch is closed and opened, surge and other interference factors, the specific structure of the processing circuit is not limited in the embodiment, and the processing circuit can be any circuit capable of realizing the functions.
Further, as shown in fig. 1, the casing of the box body 2 is also provided with a display screen; the display screen is connected to the controller 21. The device can be used for displaying working parameters (voltage and current data), metering data, temperature data and the like; the staff of being convenient for looks over and maintains, improves the security.
In addition, when the box body is arranged in the external natural environment, the top of the box body is provided with an outward extending part; the invasion of rainwater can be avoided; the plurality of support legs are arranged below the base, so that direct contact with the ground can be avoided, erosion of moisture is reduced, and the possibility of soaking accumulated water is reduced. When the box body is fixed on a building or a column, one side of the box body is also provided with a fixing structure, such as a hook, a groove or a bolt hole.
It will be apparent to those skilled in the art that various changes and modifications may be made in the present invention without departing from the spirit and scope of the invention. Thus, if such modifications and variations of the present invention fall within the scope of the claims of the present invention and their equivalents, the present invention is also intended to include such modifications and variations.
Claims (10)
1. A high-pressure charge control high-supply low-control device is characterized by comprising a base; a box body arranged on the base;
the box body is internally provided with a controller, an acquisition circuit, a processing circuit, a switch control circuit and a three-phase metering unit;
the input end of the high-voltage power supply is connected with the input end of the switch control circuit; the output end of the switch control circuit is connected with a common voltage terminal of the three-phase metering unit and is output through a high-voltage line; the three-phase input end of the acquisition circuit is connected with the three-phase output end of the switch control circuit and is used for acquiring current and voltage information;
the acquisition circuit is connected with the processing circuit and is used for filtering interference factors in the current and voltage information;
the three-phase output end of the acquisition circuit is respectively connected with the three-phase metering unit and the controller; the controller is in communication connection with the three-phase metering unit and is in control connection with the switch control circuit; the controller is also in communication connection with the remote control terminal, receives the control instruction and feeds back the metering data.
2. The high pressure and low power supply control device applied to the high pressure charge control as claimed in claim 1, wherein at least one side of the case is formed of a two-layer structure with a gap of a predetermined distance therebetween; wherein the two-layer structure is provided with a plurality of vent holes; the vent holes on the two-layer structure are arranged in a staggered manner;
an exhaust area is arranged on one side of the box body close to the top, an air inlet area is arranged on the other side of the box body opposite to the exhaust area, and the air inlet area is close to the bottom of the box body.
3. The high pressure and low power supply control device applied to the high pressure charge control of claim 2, wherein the air inlet area is provided with a filtering mechanism;
the filtering mechanism comprises a housing; a HEPA standard filter screen is arranged on the housing; the filter screen is made of PP filter paper, glass fiber, composite PP PET filter paper, melt-blown polyester non-woven fabric or melt-blown glass fiber; and an air inlet machine is arranged at the inner side of the filter screen.
4. The high-voltage charge control high-supply low-control device applied to the high-voltage charge control as claimed in claim 3, wherein a temperature sensor connected with the controller is further arranged in the box body;
the exhaust area is provided with an exhaust fan connected with the controller; the exhaust fan is a cross-flow fan, and an air outlet grid is arranged on the outer side of the exhaust area.
5. The high pressure cost control high supply low control device applied to the high pressure cost as claimed in claim 4, wherein the top inside the box body is further provided with: a heat radiation fan; the heat radiation fan is connected with the controller.
6. The high-voltage-rate control and high-power-supply low-voltage control device as claimed in claim 1, wherein the acquisition circuit comprises:
three current acquisition transformers T1, T2 and T3 which are connected in parallel; the input end of the acquisition transformer T1 is connected with a first high-voltage power supply output by the switch control circuit, and the output end of the acquisition transformer T1 is sequentially connected with a resistor R1 and a capacitor C1 in series;
the input end of the acquisition transformer T2 is connected with the second phase of the high-voltage power supply output by the switch control circuit, and the output end of the acquisition transformer T2 is sequentially connected with a resistor R2 and a capacitor C2 in series;
the input end of the acquisition transformer T3 is connected with the third phase of the high-voltage power supply output by the switch control circuit, and the output end of the acquisition transformer T3 is sequentially connected with a resistor R3 and a capacitor C3 in series;
one end of the resistor R4 is connected with a circuit between the output end of the acquisition transformer T1 and the resistor R1, and the other end of the resistor R4 is connected with the input end of the processing circuit;
one end of the resistor R5 is connected with a circuit between the output end of the acquisition transformer T2 and the resistor R2, and the other end of the resistor R5 is connected with the input end of the processing circuit;
one end of the resistor R6 is connected with a circuit between the output end of the acquisition transformer T3 and the resistor R3, and the other end of the resistor R6 is connected with the input end of the processing circuit;
the other end of the capacitor C1, the other end of the capacitor C2 and the other end of the capacitor C3 are all connected to AGND.
7. The high-voltage-rate and low-power-supply control device applied to the high-voltage-rate control is characterized in that the three-phase output end of the processing circuit is respectively connected with the first-phase, second-phase and third-phase current negative input terminals of the three-phase metering unit.
8. The high-voltage cost control high-power supply low-control device as claimed in claim 7, wherein the switch control circuit is a high-voltage circuit breaker.
9. The high-voltage charge control high-power supply low-control device as claimed in claim 1, wherein the casing is further provided with a display screen; the display screen is connected with the controller.
10. The high pressure cost control high supply and low control device as claimed in any one of claims 1 to 9, wherein the top plate of the box body has an outwardly extending extension;
the base has at least 3 feet or one side of the box body has a fixing structure.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202011454999.9A CN114624489A (en) | 2020-12-10 | 2020-12-10 | High-voltage charge control high-power supply low-voltage control device |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202011454999.9A CN114624489A (en) | 2020-12-10 | 2020-12-10 | High-voltage charge control high-power supply low-voltage control device |
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