CN117711780B - Ups combined isolation transformer - Google Patents
Ups combined isolation transformer Download PDFInfo
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- CN117711780B CN117711780B CN202410025888.8A CN202410025888A CN117711780B CN 117711780 B CN117711780 B CN 117711780B CN 202410025888 A CN202410025888 A CN 202410025888A CN 117711780 B CN117711780 B CN 117711780B
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- isolation transformer
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- 238000002955 isolation Methods 0.000 title claims abstract description 39
- 238000004804 winding Methods 0.000 claims description 36
- 238000000034 method Methods 0.000 claims description 19
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical group [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims description 8
- 239000011810 insulating material Substances 0.000 claims description 8
- 238000013021 overheating Methods 0.000 claims description 8
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims description 6
- 229910052802 copper Inorganic materials 0.000 claims description 6
- 239000010949 copper Substances 0.000 claims description 6
- 229910000976 Electrical steel Inorganic materials 0.000 claims description 4
- 239000003822 epoxy resin Substances 0.000 claims description 4
- 239000000463 material Substances 0.000 claims description 4
- 229920000647 polyepoxide Polymers 0.000 claims description 4
- 229920002379 silicone rubber Polymers 0.000 claims description 4
- 229910000859 α-Fe Inorganic materials 0.000 claims description 4
- 239000004945 silicone rubber Substances 0.000 claims description 3
- 230000001105 regulatory effect Effects 0.000 claims description 2
- 239000002966 varnish Substances 0.000 claims description 2
- 230000009466 transformation Effects 0.000 abstract description 2
- 238000005259 measurement Methods 0.000 description 6
- 238000001514 detection method Methods 0.000 description 4
- 238000005265 energy consumption Methods 0.000 description 3
- 238000010586 diagram Methods 0.000 description 2
- 238000000691 measurement method Methods 0.000 description 2
- 239000003973 paint Substances 0.000 description 2
- 239000000123 paper Substances 0.000 description 2
- 230000000750 progressive effect Effects 0.000 description 2
- 230000002159 abnormal effect Effects 0.000 description 1
- 239000002390 adhesive tape Substances 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000004146 energy storage Methods 0.000 description 1
- 230000001939 inductive effect Effects 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
- H01F27/00—Details of transformers or inductances, in general
- H01F27/40—Structural association with built-in electric component, e.g. fuse
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
- H01F27/00—Details of transformers or inductances, in general
- H01F27/28—Coils; Windings; Conductive connections
- H01F27/30—Fastening or clamping coils, windings, or parts thereof together; Fastening or mounting coils or windings on core, casing, or other support
- H01F27/306—Fastening or mounting coils or windings on core, casing or other support
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Ac-Ac Conversion (AREA)
- Housings And Mounting Of Transformers (AREA)
Abstract
The invention relates to the technical field of voltage transformation equipment, and discloses a ups combined isolation transformer.A primary side is used for encircling a primary coil circuit, a secondary side is used for encircling a secondary coil circuit, one end of the primary coil circuit is electrically connected with a first input end, a plurality of positions, far away from the first input end, of the primary coil circuit are electrically connected with primary coil branches, the primary coil branches are electrically connected with a primary switch, the primary switch is electrically connected with a second input end, and the primary switch is used for switching different primary coil branches to be electrically connected with the first input end; one end of the secondary side coil circuit is electrically connected with the second output end, a plurality of positions, far away from the second output end, on the secondary side coil circuit are electrically connected with secondary side coil branches, the secondary side coil branches are electrically connected with a secondary side change-over switch, and the secondary side change-over switch is electrically connected with the first output end.
Description
Technical Field
The invention belongs to the technical field of voltage transformation equipment, and particularly relates to a ups combined isolation transformer.
Background
Uninterruptible power supplies require a high level of energy loss in use because the uninterruptible power supply itself is an energy storage device. It is used in emergency situations, so that when the uninterruptible power supply is in operation, it is required that as little power as possible is consumed for the load to provide a longer supply time. However, in practical applications, the transformer at the output of the ups is often fixed, and generally, the output of the ups has only a large isolation transformer, which is used to receive the load. However, the load also has a corresponding transformer, in which case there will be more energy losses, i.e. the energy consumed by the transformer itself, because there are more transformers.
In practical application, a larger power transformer is directly arranged at the output end of the uninterruptible power supply, so that more loads can be applied, but a certain problem exists in a single transformer with larger power, and firstly, for a small-power load, an excessive transformer can generate unnecessary energy loss, because the transformer itself consumes a part of power. This not only increases energy costs, but also is not environmentally friendly.
Second, if the capacity of the transformer is too large, it may generate more reactive power, resulting in voltage fluctuations or other related problems.
In addition, the use of unsuitable transformers may also cause other safety problems, such as overheating, overvoltage, etc., which may cause damage to the equipment or constitute a hazard to personnel.
Therefore, the rated power of the transformer at the output end of the uninterruptible power supply is not too large, or the number of the transformers is too large, so that the unnecessary energy loss and the like are caused.
Disclosure of Invention
In order to solve the technical problems, the invention adopts the basic conception of the technical scheme that:
The ups combined isolation transformer comprises a winding iron core, wherein the winding iron core comprises a primary side and a secondary side, the primary side is used for encircling a primary coil circuit, the secondary side is used for encircling a secondary coil circuit, one end of the primary coil circuit is electrically connected with a first input end, a plurality of positions, far away from the first input end, of the primary coil circuit are electrically connected with primary coil branches, the primary coil branches are electrically connected with a primary switch, the primary switch is electrically connected with a second input end, and the primary switch is used for switching different primary coil branches to be electrically connected with the first input end; the second input end is electrically connected with the first input end through windings with different turns, one end of the secondary coil circuit is electrically connected with the second output end, a plurality of positions, far away from the second output end, of the secondary coil circuit are also electrically connected with secondary coil branches, the secondary coil branches are electrically connected with secondary switching switches, the secondary switching switches are electrically connected with the first output end, and the secondary switching switches are used for switching different secondary coil branches to be electrically connected with the second output end; and the first output end is electrically connected with the second output end through windings with different turns, and the rated power of the isolation transformer is adjusted by adjusting the pair of the turns of the coils on the primary side and the secondary side through the primary side change-over switch and the secondary side change-over switch.
As a preferred embodiment of the present invention, the primary side and the secondary side are made of silicon steel sheet or ferrite material.
As a preferred embodiment of the present invention, the primary coil circuit and the secondary coil circuit are insulated copper wires.
As a preferred embodiment of the present invention, an insulating material is filled between the primary side and the secondary side, and the insulating material includes oil-impregnated paper, epoxy resin, silicone rubber, insulating varnish or insulating tape.
As a preferred embodiment of the present invention, the primary side switch and the secondary side switch may be rotary single-pole multi-throw switches, push-button single-pole multi-throw switches, or track single-pole multi-throw switches.
The adjusting method of the ups combined isolation transformer is as follows:
Firstly, the rated power of the isolation transformer is adjusted to be the lowest according to load requirements, namely, the rated power of the isolation transformer is enabled to be equal to the load requirements, then whether voltage drop and fluctuation instability, energy loss increase and winding overheat exist or not is detected, if the voltage drop and fluctuation instability or energy loss increase or winding overheat exists, the rated power of the isolation transformer is gradually increased until the voltage drop and fluctuation instability or energy loss increase or winding overheat does not occur.
As a preferred embodiment of the present invention, the presence or absence of voltage drop and ripple instability is detected by observing the output signal of the uninterruptible power supply using an oscilloscope to check whether the voltage drop and ripple instability is present.
As a preferred embodiment of the invention, the detection of the presence or absence of an increase in energy loss is performed by measuring the power factor of the transformer using a power factor meter, and if the power factor is too low, it is indicated that the energy loss of the transformer is increased.
As a preferred embodiment of the invention, the detection of the presence of overheating of the winding is performed in particular by measuring the temperature of the transformer using an infrared thermometer.
Compared with the prior art, the invention has the following beneficial effects:
The application adjusts the rated power of the isolation transformer by the primary side change-over switch 103 and the secondary side change-over switch 203 by matching the number of turns of the primary side and the secondary side, solves the problem in the prior art that the transformer at the output end of the uninterruptible power supply is always fixed, and generally, the output end of the uninterruptible power supply only has one large isolation transformer which is used for receiving load. However, the load also has a corresponding transformer, in which case there is more energy loss, i.e. the energy consumed by the transformer itself, or other problems of improper transformer, because there are more transformers.
The following describes the embodiments of the present invention in further detail with reference to the accompanying drawings.
Drawings
In the drawings:
fig. 1 is a schematic structural diagram of an embodiment of the present application.
Fig. 2 is a schematic circuit diagram of an embodiment of the present application.
Detailed Description
For the purpose of making the objects, technical solutions and advantages of the embodiments of the present invention more apparent, the technical solutions in the embodiments will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention, and the following embodiments are used to illustrate the present invention.
The application discloses a ups combined type isolation transformer, as shown in fig. 1 and 2, the ups combined type isolation transformer comprises a winding iron core, wherein the winding iron core comprises a primary side 100 and a secondary side 200, the primary side 100 is used for encircling a primary coil circuit 101, and the secondary side 200 is used for encircling a secondary coil circuit 201;
Insulating materials are filled between the primary side 100 and the secondary side 200, and the insulating materials comprise oil-immersed paper, epoxy resin, organic silicon rubber, insulating paint or insulating adhesive tape;
The primary side 100 and the secondary side 200 are made of silicon steel sheets or ferrite materials;
the primary coil circuit 101 and the secondary coil circuit 201 are insulated copper wires;
One end of the primary coil circuit 101 is electrically connected with the first input end 105, a plurality of positions, far away from the first input end 105, on the primary coil circuit 101 are electrically connected with the primary coil branches 102, the primary coil branches 102 are electrically connected with the primary switch 103, the primary switch 103 is electrically connected with the second input end 104, and the primary switch 103 is used for switching different primary coil branches 102 to be electrically connected with the first input end 105; further, the second input end 104 is electrically connected with the first input end 105 through windings with different turns, one end of the secondary coil circuit 201 is electrically connected with the second output end 205, a plurality of positions, far away from the second output end 205, on the secondary coil circuit 201 are also electrically connected with the secondary coil branch 202, the secondary coil branch 202 is electrically connected with the secondary switch 203, the secondary switch 203 is electrically connected with the first output end 204, and the secondary switch 203 is used for switching different secondary coil branches 202 to be electrically connected with the second output end 205; the first output end 204 is electrically connected with the second output end 205 through windings with different turns, and the rated power of the isolation transformer is adjusted by adjusting the pairing of the turns of the coils of the primary side and the secondary side through the primary side change-over switch 103 and the secondary side change-over switch 203;
The primary side switch 103 and the secondary side switch 203 may be of the following types and models: rotary single pole multiple throw switch: the electrical appliance can be controlled to be turned on and off by rotating the switch. Common rotary single pole, multi-throw switches are the siemens brand switches. Push-button single pole multi-throw switch: the on-off state of the electrical appliance can be switched by a key. Common key-type single-pole multi-throw switches are switches of brands such as fly carving, european style and the like. Track type single pole multi throw switch: the on-off state of the electrical appliance can be switched through the sliding block on the track.
The power requirements of the load have an important influence on the selection of the transformer model. Loads of different power requirements require different types of transformers to meet their requirements. If the load is of a high power, a high power transformer needs to be selected to ensure that the load is supplied with sufficient power. If the selected transformer is too low power, overload of the transformer may result, thereby causing safety problems. If the load power is smaller, a smaller power transformer needs to be selected, so that more extra energy consumption can be avoided.
Furthermore, the requirements of different types of loads on the transformer are also different. For example, resistive loads require relatively low requirements for transformers, while inductive loads require selection of transformers with higher current and voltage carrying capabilities.
Therefore, when selecting the type of the transformer, comprehensive consideration needs to be carried out according to the power requirement and the type of the load so as to ensure that the proper transformer is selected and ensure the normal operation and safety of the load.
Therefore, the adjusting method of the ups combined type isolation transformer disclosed by the application is as follows:
Firstly, adjusting the rated power of the isolation transformer to be the lowest according to load requirements, namely, enabling the rated power of the isolation transformer to be equal to the load required power, and then detecting whether the isolation transformer exists or not: 1. voltage drop and ripple instability; 2. increased energy loss: when the load of the transformer is too large, a large amount of copper loss is generated, the efficiency of the transformer is reduced, the energy loss is increased, and the total energy consumption is increased; 3. winding overheat: the coil current in the transformer can be increased due to overload current, the resistor can generate heat, and the temperature in the transformer is increased; if the above problems (1. Voltage drop and fluctuation instability; 2. Loss of energy increase: when the transformer load is too large, a large amount of copper loss is generated, which causes the efficiency of the transformer to drop, loss of energy increase, and thus the total energy consumption to increase; 3. Winding overheat: due to current overload, coil current in the transformer increases, heat is generated by the resistor, and temperature in the transformer increases accordingly), the rated power of the isolation transformer is gradually increased until the detected problem does not occur.
The method for measuring whether the uninterrupted power supply has voltage drop and fluctuation instability is as follows: 1. the observation method comprises the following steps: observing whether the output voltage of the uninterruptible power supply is within a normal range, if the fluctuation range exceeds the allowable value, there may be problems of voltage drop and fluctuation instability. 2. Voltmeter measurement: and measuring the output voltage of the uninterruptible power supply by using a voltmeter, and observing whether the voltage is stable. If the pointer swing amplitude of the voltmeter is large, the voltage fluctuation is unstable. 3. Oscilloscope measurement method: an oscilloscope is used to observe the output signal of the ups to check if the voltage drops and fluctuates unstably. The oscilloscope can display the waveform of the output signal in real time, and if the waveform is unstable, the problem of unstable voltage fluctuation can exist. 4. Current detection method: the output current of the uninterruptible power supply is detected by a current detector, and if the current is too large or too small, the problems of voltage drop and fluctuation instability may exist.
The method for measuring whether the energy loss of the transformer is increased is as follows: 1. the observation method comprises the following steps: observing whether the output power or current of the transformer is within a normal range may result in an increase in energy loss if the output power or current is too large. 2. Amperometric measurement: the ammeter is used for measuring the output current of the transformer, and if the pointer swing amplitude of the ammeter is large, the energy loss is increased. 3. Voltage and current combined measurement method: the transformer is measured by using the voltmeter and ammeter combination, the change condition of voltage and current is observed, and if the fluctuation range of the voltage and the current is large, the problem of increased energy loss can exist. 4. Power factor measurement: the power factor of the transformer is measured using a power factor meter, and if the power factor is too low, it is interpreted that the power loss of the transformer is increased.
The method for measuring whether the winding of the transformer is overheated is as follows: 1. the observation method comprises the following steps: observing whether the transformer housing is hot or not, if the temperature is too high, there may be a problem with overheating of the windings. 2. Thermometer measurement: the winding temperature of the transformer is measured using a thermometer, and if the temperature exceeds an allowable value, there may be a problem in that the winding is overheated. 3. Stethoscope measurement: with stethoscopes listening to sounds inside the transformer, if the sounds are abnormal, there may be problems with overheating of the windings. 4. Infrared thermometer measurement: the temperature of the transformer is measured by using an infrared thermometer, so that whether the winding is overheated or not can be rapidly and accurately judged.
It can be seen that the application adjusts the rated power of the isolation transformer by the primary side switch 103 and the secondary side switch 203 by matching the number of turns of the primary side and the secondary side, which solves the problem of the prior art that the transformer at the output end of the uninterruptible power supply is always fixed, and generally, the output end of the uninterruptible power supply only has one large isolation transformer, and the isolation transformer is used for receiving load. However, the load also has a corresponding transformer, in which case there is more energy loss, i.e. the energy consumed by the transformer itself, or other problems of improper transformer, because there are more transformers.
Embodiments of the application to be protected include;
The ups combined isolation transformer comprises a winding iron core, wherein the winding iron core comprises a primary side 100 and a secondary side 200, the primary side 100 is used for encircling a primary coil circuit 101, the secondary side 200 is used for encircling a secondary coil circuit 201, one end of the primary coil circuit 101 is electrically connected with a first input end 105, a plurality of positions, far away from the first input end 105, on the primary coil circuit 101 are electrically connected with primary coil branches 102, the primary coil branches 102 are electrically connected with a primary switch 103, the primary switch 103 is electrically connected with a second input end 104, and the primary switch 103 is used for switching different primary coil branches 102 to be electrically connected with the first input end 105; further, the second input end 104 is electrically connected with the first input end 105 through windings with different turns, one end of the secondary coil circuit 201 is electrically connected with the second output end 205, a plurality of positions, far away from the second output end 205, on the secondary coil circuit 201 are also electrically connected with the secondary coil branch 202, the secondary coil branch 202 is electrically connected with the secondary switch 203, the secondary switch 203 is electrically connected with the first output end 204, and the secondary switch 203 is used for switching different secondary coil branches 202 to be electrically connected with the second output end 205; and the first output end 204 is electrically connected with the second output end 205 through windings with different turns, and the rated power of the isolation transformer is adjusted by adjusting the pairing of the turns of the primary side coil and the secondary side coil through the primary side change-over switch 103 and the secondary side change-over switch 203.
Preferably, the primary side 100 and the secondary side 200 are made of silicon steel or ferrite material.
Preferably, the primary coil circuit 101 and the secondary coil circuit 201 are insulated copper wires.
Preferably, an insulating material is filled between the primary side 100 and the secondary side 200, and the insulating material includes oil-impregnated paper, epoxy resin, silicone rubber, insulating paint or insulating tape.
Preferably, the primary side switch 103 and the secondary side switch 203 can be rotary single-pole multi-throw switches, push-button single-pole multi-throw switches, track single-pole multi-throw switches.
The adjusting method of the ups combined isolation transformer is as follows: firstly, regulating the rated power of an isolation transformer to be the lowest according to load requirements, namely enabling the rated power of the isolation transformer to be equal to the load required power, then detecting whether voltage drop and fluctuation instability, energy loss increase and winding overheat exist,
If there is a voltage drop and a surge instability or an increase in energy loss or overheating of the windings, the rated power of the isolation transformer is gradually increased until no voltage drop and surge instability or increase in energy loss or overheating of the windings occurs.
Detecting the presence or absence of voltage drop and ripple instability is performed by observing the output signal of the uninterruptible power supply using an oscilloscope to check whether the voltage drops and ripple instability.
The detection of the presence or absence of an increase in energy loss is performed by measuring the power factor of the transformer using a power factor table, and if the power factor is too low, it is interpreted that the energy loss of the transformer is increased.
Detecting whether winding overheating exists is particularly achieved by measuring the temperature of the transformer using an infrared thermometer.
It should be noted that, in the present specification, each embodiment is described in a progressive manner, and identical and similar parts of each embodiment are all referred to each other, and each embodiment is mainly described in a different point from other embodiments. In particular, for the apparatus and system embodiments, since they are substantially similar to the method embodiments, the description is relatively simple, with reference to the description of the method embodiments in part. The apparatus and system embodiments described above are merely illustrative, in which elements illustrated as separate elements may or may not be physically separate, and elements shown as elements may or may not be physical elements, may be located in one place, or may be distributed over a plurality of network elements. Some or all of the modules may be selected according to actual needs to achieve the purpose of the solution of this embodiment. Those of ordinary skill in the art will understand and implement the present invention without undue burden.
It should be noted that, in the present specification, each embodiment is described in a progressive manner, and identical and similar parts of each embodiment are all referred to each other, and each embodiment is mainly described in a different point from other embodiments. In particular, for the apparatus and system embodiments, since they are substantially similar to the method embodiments, the description is relatively simple, with reference to the description of the method embodiments in part. The apparatus and system embodiments described above are merely illustrative, in which elements illustrated as separate elements may or may not be physically separate, and elements shown as elements may or may not be physical elements, may be located in one place, or may be distributed over a plurality of network elements. Some or all of the modules may be selected according to actual needs to achieve the purpose of the solution of this embodiment. Those of ordinary skill in the art will understand and implement the present invention without undue burden.
The foregoing is only one specific embodiment of the present application, but the scope of the present application is not limited thereto, and any changes or substitutions easily contemplated by those skilled in the art within the technical scope of the present application should be covered by the scope of the present application.
Claims (5)
- The method is characterized in that the ups combined isolation transformer comprises a winding iron core, the winding iron core comprises a primary side and a secondary side, the primary side is used for encircling a primary coil circuit, the secondary side is used for encircling a secondary coil circuit, one end of the primary coil circuit is electrically connected with a first input end, a plurality of positions, far away from the first input end, of the primary coil circuit are electrically connected with primary coil branches, the primary coil branches are electrically connected with a primary switch, the primary switch is electrically connected with a second input end, and the primary switch is used for switching different primary coil branches to be electrically connected with the first input end; the second input end is electrically connected with the first input end through windings with different turns, one end of the secondary coil circuit is electrically connected with the second output end, a plurality of positions, far away from the second output end, of the secondary coil circuit are also electrically connected with secondary coil branches, the secondary coil branches are electrically connected with secondary switching switches, the secondary switching switches are electrically connected with the first output end, and the secondary switching switches are used for switching different secondary coil branches to be electrically connected with the second output end; the first output end is electrically connected with the second output end through windings with different turns, and the turns of the coils on the primary side and the secondary side are adjusted through the primary side change-over switch and the secondary side change-over switch to adjust the rated power of the isolation transformer in a pairing mode; the adjusting method of the ups combined isolation transformer comprises the following steps: firstly, regulating the rated power of an isolation transformer to be the lowest according to load requirements, namely enabling the rated power of the isolation transformer to be equal to the load required power, then detecting whether voltage drop and fluctuation instability, energy loss increase and winding overheat exist or not, and gradually increasing the rated power of the isolation transformer until the voltage drop and fluctuation instability or energy loss increase or winding overheat does not occur if the voltage drop and fluctuation instability or energy loss increase or the winding overheat exist; detecting whether voltage drop and fluctuation instability exist or not, and particularly observing an output signal of the uninterruptible power supply by using an oscilloscope to check whether the voltage drop and the fluctuation instability exist or not; detecting whether the energy loss increase exists or not, specifically measuring the power factor of the transformer by using a power factor meter, and if the power factor is too low, indicating the energy loss increase of the transformer; detecting whether winding overheating exists is particularly achieved by measuring the temperature of the transformer using an infrared thermometer.
- 2. The method of adjusting a ups-combined isolation transformer of claim 1, wherein the primary side and the secondary side are made of silicon steel sheets or ferrite materials.
- 3. The method of tuning up-combined isolation transformers of claim 1 wherein the primary and secondary coil circuits are insulated copper wires.
- 4. The method of adjusting a ups-combined isolation transformer of claim 1, wherein an insulating material is filled between the primary side and the secondary side, the insulating material comprising an oil-impregnated paper, an epoxy resin, a silicone rubber, an insulating varnish or an insulating tape.
- 5. The method of claim 1, wherein the primary side switch and the secondary side switch are rotary single-pole multi-throw switches, push-button single-pole multi-throw switches, and track single-pole multi-throw switches.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202410025888.8A CN117711780B (en) | 2024-01-08 | 2024-01-08 | Ups combined isolation transformer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202410025888.8A CN117711780B (en) | 2024-01-08 | 2024-01-08 | Ups combined isolation transformer |
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| Publication Number | Publication Date |
|---|---|
| CN117711780A CN117711780A (en) | 2024-03-15 |
| CN117711780B true CN117711780B (en) | 2024-06-18 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202410025888.8A Active CN117711780B (en) | 2024-01-08 | 2024-01-08 | Ups combined isolation transformer |
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| Country | Link |
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| CN (1) | CN117711780B (en) |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR19980056363A (en) * | 1996-12-28 | 1998-09-25 | 이준영 | Transformers |
| CN101471174A (en) * | 2007-12-27 | 2009-07-01 | 深圳迈瑞生物医疗电子股份有限公司 | Isolation transformer |
Family Cites Families (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2000172350A (en) * | 1998-12-08 | 2000-06-23 | Hitachi Ltd | Uninterruptible power supply unit and its control method |
| JP2005176460A (en) * | 2003-12-09 | 2005-06-30 | Fuji Electric Fa Components & Systems Co Ltd | Uninterruptible power supply unit |
| US7323852B2 (en) * | 2005-09-14 | 2008-01-29 | Hoffman Gary R | Sensing load tap changer (LTC) conditions |
| KR100908783B1 (en) * | 2007-07-25 | 2009-07-22 | 한국전력공사 | Switching device for transformer having an uninterruptible power function and method of voltage control using the same |
| EP2800230B1 (en) * | 2011-12-28 | 2018-06-20 | Vertiv Tech Co., Ltd. | Dc/dc circuit for uninterruptible power supply |
| US10014718B2 (en) * | 2014-06-26 | 2018-07-03 | Toshiba Mitsubishi-Electric Industrial Systems Corporation | Uninterruptible power source |
-
2024
- 2024-01-08 CN CN202410025888.8A patent/CN117711780B/en active Active
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR19980056363A (en) * | 1996-12-28 | 1998-09-25 | 이준영 | Transformers |
| CN101471174A (en) * | 2007-12-27 | 2009-07-01 | 深圳迈瑞生物医疗电子股份有限公司 | Isolation transformer |
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| Publication number | Publication date |
|---|---|
| CN117711780A (en) | 2024-03-15 |
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