CN220628945U - Multi-output test power supply - Google Patents
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- CN220628945U CN220628945U CN202322196041.XU CN202322196041U CN220628945U CN 220628945 U CN220628945 U CN 220628945U CN 202322196041 U CN202322196041 U CN 202322196041U CN 220628945 U CN220628945 U CN 220628945U
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Abstract
The utility model discloses a multi-output test power supply, which comprises: the device comprises a first power input end used for being connected with a live wire, a second power input end used for being connected with a zero line, a first power output end used for being connected with the positive electrode of a load, a second power output end used for being connected with the negative electrode of the load, a storage battery, a change-over switch used for being communicated with or disconnected from a control circuit to change the output voltage of a test power supply, a first voltage conversion module used for converting direct current output by the storage battery into 220V direct current, a second voltage conversion module used for converting direct current output by the storage battery into 110V direct current, a first relay, a second relay and a third relay, wherein the first power input end is used for being connected with the live wire; by adopting the structure, the utility model can control the closing of different relays by controlling the change-over switch, so that the electric output interface can switch and output 220V alternating current, 220V direct current or 110V direct current, and the utility model has wider application range compared with the existing test power supply.
Description
Technical Field
The utility model relates to the technical field of mobile power supplies, in particular to a multi-output test power supply.
Background
At present, in a high-voltage power distribution system, a control power supply of most high-voltage circuit breakers adopts a floor type direct-current power supply cabinet or a wall-mounted direct-current power supply cabinet to carry out switching-on and switching-off control, and in the power utilization process, the situation that the control power supply cannot be timely provided is often encountered, for example, in the debugging process of a newly-installed power distribution room of some electrical equipment, after the electrical equipment is installed, a special control power supply cabinet is not in stock, so that debugging work is interrupted, a high-voltage relay protector and the like cannot be debugged according to a construction period, and thus the debugging progress, acceptance and production work of the whole project are influenced; for example, during normal maintenance of the high-voltage equipment, the situation that the direct-current power supply equipment is paralyzed is frequently encountered, so that a control power supply cannot be provided for normal maintenance of the equipment controlled by the high-voltage circuit breaker, the high-voltage equipment cannot control opening and closing by electrically operating the control power supply, manual operation is forced on the high-voltage circuit breaker, and great potential safety hazards exist for personnel and equipment.
In the prior art, the Chinese patent document with the publication number of CN201918795U describes a portable mobile power supply which only has the function of providing direct current power supply, and has the advantages of narrow application range and poor universality; the chinese patent publication No. CN 204013201U describes a portable ac/dc power supply having an ac output terminal and a dc output terminal, but the circuits for outputting ac and dc are separately provided, and the circuit structure is relatively complex.
Disclosure of Invention
The utility model aims to disclose a multi-output test power supply, which solves the technical problems of poor universality and complex circuit structure of a power supply device for temporary use in the prior art.
In order to achieve the above purpose, the utility model adopts the following technical scheme:
a multiple output test power supply comprising: the device comprises a first power input end used for being connected with a live wire, a second power input end used for being connected with a zero line, a first power output end used for being connected with the positive electrode of a load, a second power output end used for being connected with the negative electrode of the load, a storage battery, a change-over switch used for being communicated with or disconnected from a control circuit to change the output voltage of a test power supply, a first voltage conversion module used for converting direct current output by the storage battery into 220V direct current, a second voltage conversion module used for converting direct current output by the storage battery into 110V direct current, a first relay, a second relay and a third relay, wherein the first power input end is used for being connected with the live wire; the first power input end is connected with the first power output end after passing through a first controlled switch of the first relay, and the second power input end is connected with the second power output end after passing through a second controlled switch of the first relay; the first interface of the change-over switch is connected with the first power input end, and the second interface of the change-over switch is connected with the second power input end after passing through the control end of the first relay; the seventh interface of the change-over switch is connected with the positive electrode of the storage battery after passing through the control end of the second relay, and the eighth interface of the change-over switch is connected with the positive electrode of the storage battery; an eleventh interface of the change-over switch is connected with the positive electrode of the storage battery after passing through the control end of the third relay, and a twelfth interface of the change-over switch is connected with the positive electrode of the storage battery; the positive electrode of the storage battery is also connected with the positive input end of the first voltage conversion module and the positive input end of the second voltage conversion module respectively, and the negative electrode of the storage battery is also connected with the negative input end of the first voltage conversion module and the negative input end of the second voltage conversion module respectively; the positive output end of the first voltage conversion module is connected with the first power supply output end after passing through a first controlled switch of the second relay; the negative output end of the first voltage conversion module is connected with the second power supply output end after passing through a second controlled switch of the second relay; the positive output end of the second voltage conversion module is connected with the first power supply output end after passing through the first controlled switch of the third relay; the negative output end of the second voltage conversion module is connected with the second power supply output end after passing through a second controlled switch of the third relay.
Optionally, the third interface, the fifth interface and the ninth interface of the change-over switch are all connected with the first power input end; the fourth interface and the sixth interface of the change-over switch are connected with the live wire connecting end of the first voltage conversion module; the tenth interface of the change-over switch is connected with the live wire connecting end of the second voltage conversion module; the zero line connecting end of the first voltage conversion module and the zero line connecting end of the second voltage conversion module are both connected with the second power input end.
Optionally, the method further comprises: the first indicator lamp, the second indicator lamp and the third indicator lamp; two ends of the first indicator lamp are respectively connected with two control ends of the first relay; two ends of the second indicator lamp are respectively connected with two control ends of the second relay; and two ends of the third indicator lamp are respectively connected with two control ends of the third relay.
Optionally, the relay further comprises a first voltmeter and a second voltmeter, wherein two ends of the first voltmeter are respectively connected with two ends of the first relay; and two ends of the second voltmeter are respectively connected with the first power supply output end and the second power supply output end.
Optionally, the first relay further comprises a first normally closed controlled switch and a second normally closed controlled switch; the first controlled switch of the second relay and the first controlled switch of the third relay are connected with the first power supply output end after passing through the first normally closed controlled switch; the second controlled switch of the second relay and the second controlled switch of the third relay are connected with the second power supply output end after passing through the second normally closed controlled switch.
Optionally, the safety protection device further comprises a first safety switch, a second safety switch and a third safety switch; the first power input end is connected with the live wire after passing through the first safety switch, and the second power input end is connected with the zero line after passing through the first safety switch; the positive electrode of the storage battery is respectively connected with the positive input end of the first voltage conversion module and the positive input end of the second voltage conversion module after passing through the second safety switch; the negative electrode of the storage battery is connected with the negative input end of the first voltage conversion module and the negative input end of the second voltage conversion module respectively after passing through the second safety switch; the first power output end is connected with the positive electrode of the load after passing through the third safety switch, and the second power output end is connected with the negative electrode of the load after passing through the second safety switch.
Optionally, the method further comprises: the top of the shell is fixedly provided with a handle; the bottom of the shell is provided with a plurality of pulleys.
Optionally, the side of shell still is equipped with a plurality of pilot lamps, electric input interface and electric output interface.
Compared with the prior art, the utility model has the beneficial effects that:
1. according to the switching control circuit, through the arrangement of the change-over switch, the first relay, the second relay, the third relay, the first voltage conversion module and the second voltage conversion module, different relays can be controlled to be closed through controlling the change-over switch, so that the electric output interface can switch and output 220V alternating current, 220V direct current or 110V direct current, and the switching output between different levels of voltages is realized by adopting the unified electric output interface, so that the switching control circuit is more convenient to use.
2. A group of normally-closed terminals are arranged in the first relay, the normally-open terminals of the second relay and the third relay are electrically connected to the anode and the cathode of the electric output interface after passing through the normally-closed terminals, and the normally-closed terminals are in a disconnection state in the process of outputting alternating current by the electric output interface, so that electric isolation is realized, the output voltage is ensured to be the only output voltage, and the use process is safer;
3. this application sets up the handle at the top of test power supply shell, sets up the pulley in test power supply's bottom, can improve test power supply's transport, the convenience of removal.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present utility model, the drawings that are needed in the description of the embodiments will be briefly described below, it being obvious that the drawings in the following description are only some embodiments of the present utility model, and that other drawings may be obtained according to these drawings without inventive effort to a person skilled in the art.
FIG. 1 is a schematic diagram of the internal circuitry of a multiple output test power supply of the present utility model;
FIG. 2 is a perspective view of a multiple output test power supply according to the present utility model;
in the figure, 1, a first power input end; 2. a second power input; 3. a first power supply output; 4. a second power supply output terminal; 5. a storage battery; 6. a change-over switch; 7. a first voltage conversion module; 8. a second voltage conversion module; 9. a first relay; 10. a second relay; 11. a third relay; 12. a first indicator light; 13. a second indicator light; 14. a third indicator light; 15. a first voltmeter; 16. a second voltmeter; 17. a first safety switch; 18. a second safety switch; 19. a third safety switch; 20. a housing; 21. a handle; 22. a pulley; 23. an indicator light; 24. an electrical input interface; 25. an electrical output interface.
Detailed Description
In the present utility model, unless explicitly specified and limited otherwise, the terms "mounted," "connected," "secured," and the like are to be construed broadly and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communication between two elements. The specific meaning of the above terms in the present utility model can be understood by those of ordinary skill in the art according to the specific circumstances. The terms "first," "second," and the like, are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include one or more such feature.
In the present utility model, unless expressly stated or limited otherwise, a first feature "above" or "below" a second feature may include both the first and second features being in direct contact, as well as the first and second features not being in direct contact but being in contact with each other through additional features therebetween. Moreover, a first feature being "above," "over" and "on" a second feature includes the first feature being directly above and obliquely above the second feature, or simply indicating that the first feature is higher in level than the second feature. The first feature being "under", "below" and "beneath" the second feature includes the first feature being directly under and obliquely below the second feature, or simply means that the first feature is less level than the second feature. The terms "vertical," "horizontal," "left," "right," "up," "down," and the like are used for descriptive purposes only and are not to indicate or imply that the devices or elements being referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore should not be construed as limiting the utility model.
The following description of the embodiments of the present utility model will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present utility model, but not all embodiments.
Example 1
A multiple output test power supply as shown in fig. 1, comprising: a first power input terminal 1 for connection to a live wire, a second power input terminal 2 for connection to a neutral wire, a first power output terminal 3 for connection to an anode of a load, a second power output terminal 4 for connection to a cathode of the load, a battery 5, a change-over switch 6 for controlling line communication or disconnection to change a test power output voltage, a first voltage conversion module 7 for converting a direct current output from the battery into a 220V direct current, a second voltage conversion module 8 for converting a direct current output from the battery into a 110V direct current, a first relay 9, a second relay 10, and a third relay 11;
the first power input end 1 is connected with the first power output end 3 after passing through a first controlled switch of the first relay 9, and the second power input end 2 is connected with the second power output end 4 after passing through a second controlled switch of the first relay 9;
the first interface of the change-over switch 6 is connected with the first power input end 1, and the second interface of the change-over switch 6 is connected with the second power input end 2 after passing through the control end of the first relay 9; the seventh interface of the change-over switch 6 is connected with the positive electrode of the storage battery 5 after passing through the control end of the second relay 10, and the eighth interface of the change-over switch 6 is connected with the positive electrode of the storage battery 5; an eleventh interface of the change-over switch 6 is connected with the anode of the storage battery 5 after passing through the control end of the third relay 11, and a twelfth interface of the change-over switch 6 is connected with the anode of the storage battery 5;
the positive electrode of the storage battery 5 is also respectively connected with the positive input end of the first voltage conversion module 7 and the positive input end of the second voltage conversion module 8, and the negative electrode of the storage battery 5 is also respectively connected with the negative input end of the first voltage conversion module 7 and the negative input end of the second voltage conversion module 8;
the positive output end of the first voltage conversion module 7 is connected with the first power supply output end 3 after passing through a first controlled switch of the second relay 10; the negative output end of the first voltage conversion module 7 is connected with the second power supply output end 4 after passing through a second controlled switch of the second relay 10;
the positive output end of the second voltage conversion module 8 is connected with the first power supply output end 3 after passing through a first controlled switch of the third relay 11; the negative output end of the second voltage conversion module 8 is connected with the second power supply output end 4 after passing through the second controlled switch of the third relay 11.
Specifically, the change-over switch 6 is used to control the circuit connection structure inside the power supply during actual use.
When the change-over switch 6 is positioned at the first gear, the first interface and the second interface of the change-over switch 6 are connected with each other, so that the first relay 9 (KA 1 in the figure) is turned on, the normally closed switch in the circuit is opened, and the normally open switch in the circuit is closed; the two power output ends are directly connected with the two power input ends, so that the voltage output by the two power output ends is untreated 220V alternating current.
When the change-over switch 6 is in the second gear, the seventh interface and the eighth interface of the change-over switch 6 are connected to each other, so that the second relay 10 (KA 2 in the figure) is connected to two ends of the storage battery 5 to be turned on, and the controlled switch of the second relay 10 is turned on, that is, the two power output ends are connected to the output end of the first voltage conversion module 7 (MK 1 in the figure) after passing through the controlled switch of the second relay 10. The first voltage conversion module 7 is used for converting 24V direct current output by the storage battery 5 into 220V direct current, the positive and negative interfaces on the left side of the first voltage conversion module 7 are respectively connected with the storage battery 5, and the positive and negative interfaces on the right side of the first voltage conversion module 7 are respectively connected with the output end to realize transformation and output of the direct current.
When the change-over switch 6 is in the third gear, the eleventh interface and the twelfth interface of the change-over switch 6 are connected, so that the third relay 11 (KA 3 in the figure) is connected with two ends of the storage battery 5 to be conducted, the controlled switch of the third relay 11 is closed, that is, two power output ends are connected with the output end of the second voltage conversion module 8 (MK 2 in the figure) after passing through the controlled switch of the third relay 11, the function of the second voltage conversion module 8 is to convert 24V direct current output by the storage battery 5 into 110V direct current, the positive interface and the negative interface on the left side of the second voltage conversion module 8 are respectively connected with the storage battery 5, and the positive interface and the negative interface on the right side of the second voltage conversion module 8 are respectively connected with the output ends to realize transformation and output of the direct current.
In summary, the application discloses a multi-output test power supply, through the three gears of adjusting change-over switch 6, the voltage that will export is adjusted to 220V alternating current, 220V direct current or 110V direct current, compares the test power supply among the prior art has extensive application.
Further, the third interface, the fifth interface and the ninth interface of the change-over switch 6 are all connected with the first power input end 1; the fourth interface and the sixth interface of the change-over switch 6 are connected with the live wire connecting end of the first voltage conversion module 7; the tenth interface of the change-over switch 6 is connected with the live wire connecting end of the second voltage conversion module 8; the zero line connection end of the first voltage conversion module 7 and the zero line connection end of the second voltage conversion module 8 are both connected with the second power input end 2.
Specifically, since the battery 5 is provided in the test power supply, in order to prevent the battery 5 from being unable to be charged in time, in the actual use process, if the test power supply is connected to the utility power, the battery 5 is charged through the voltage conversion module, so as to avoid a large burden on the voltage conversion module in the charging and discharging process of the battery 5, and therefore, the battery needs to be charged by using the voltage conversion module which does not work.
When the change-over switch 6 is in the first gear, the first voltage conversion module 7 and the second voltage conversion module 8 do not work, the fifth interface and the sixth interface in the change-over switch 6 are connected, and the electric energy is input to the storage battery 5 through the live wire connection end of the first voltage conversion module 7 to charge the storage battery 5, as known by those skilled in the art, the fifth interface and the sixth interface can also be connected with the second voltage conversion module 8, so that the storage battery 5 is charged through the second voltage conversion module 8.
When the change-over switch 6 is in the second gear, the first voltage conversion module 7 is in a working state, the second voltage conversion module 8 does not work, the third interface and the fourth interface in the change-over switch 6 are connected, the storage battery 5 is charged through the live wire connecting end of the second voltage conversion module 8, a loop is formed with the zero wire connecting end, and electric energy is input through the live wire connecting end of the second voltage conversion module 8 to charge the storage battery 5.
When the change-over switch 6 is in the third gear, the first voltage conversion module 7 does not work, the second voltage conversion module 8 is in a working state, an eleventh interface in the change-over switch 6 is connected with a twelfth interface, the storage battery 5 is charged through a live wire connecting end of the first voltage conversion module 7, a loop is formed with a zero wire connecting end, and electric energy is input through the live wire connecting end of the first voltage conversion module 7 to charge the storage battery 5.
Further, the method further comprises the following steps: a first indicator lamp 12, a second indicator lamp 13, and a third indicator lamp 14; the two ends of the first indicator lamp 12 are respectively connected with the two control ends of the first relay 9; two ends of the second indicator lamp 13 are respectively connected with two control ends of the second relay 10; the two ends of the third indicator lamp 14 are respectively connected with the two control ends of the third relay 11.
Specifically, the first indicator lamp 12, the second indicator lamp 13, and the third indicator lamp 14 correspond to three operation status words of the power supply, respectively.
Further, the relay further comprises a first voltmeter 15 and a second voltmeter 16, wherein two ends of the first voltmeter 15 are respectively connected with two ends of the first relay 9; the two ends of the second voltmeter 16 are respectively connected with the first power supply output end 3 and the second power supply output end 4.
Specifically, the first voltmeter 15 is used for testing the voltage of the ac power at the input end, the second voltmeter 16 is used for detecting the voltage at the output end, and the output end outputs both the dc power and the ac power, so the second voltmeter 16 is a general purpose voltmeter for ac and dc power.
Further, the first relay 9 further includes a first normally closed controlled switch and a second normally closed controlled switch; the first controlled switch of the second relay 10 and the first controlled switch of the third relay 11 are connected with the first power output end 3 after passing through the first normally closed controlled switch; the second controlled switch of the second relay 10 and the second controlled switch of the third relay 11 are connected with the second power output terminal 4 after passing through the second normally closed controlled switch.
As shown in fig. 1, the normally open switches of the first relay 9 are respectively disposed at the connection positions between the input end and the output end, that is, when the normally open switches are closed in the working process of the first relay 9, the normally closed switches are opened, so that the output end of the power supply and the internal circuit of the power supply can be electrically isolated, and mutual interference is avoided.
Further, the safety protection device also comprises a first safety switch 17, a second safety switch 18 and a third safety switch 19; the first power input end 1 is connected with a live wire after passing through a first safety switch 17, and the second power input end 2 is connected with a zero wire after passing through the first safety switch 17; the positive electrode of the storage battery 5 is respectively connected with the positive input end of the first voltage conversion module 7 and the positive input end of the second voltage conversion module 8 after passing through the second safety switch 18; the negative electrode of the storage battery 5 is respectively connected with the negative input end of the first voltage conversion module 7 and the negative input end of the second voltage conversion module 8 after passing through the second safety switch 18; the first power output end 3 is connected with the positive electrode of the load after passing through the third safety switch 19, and the second power output end 4 is connected with the negative electrode of the load after passing through the second safety switch 18.
Example 2
Further, as shown in fig. 2, another embodiment of the present application further includes: a housing 20, wherein a handle 21 is fixedly arranged at the top of the housing 20; the bottom of the housing 20 is provided with a number of pulleys 22.
The handle 21 at the top can conveniently lift the mobile power supply to move, and the pulley 22 below enables the power supply to slide on a flat ground, so that the physical strength of operators is saved.
Further, the side of the housing 20 is further provided with a plurality of indicator lamps 23, an electrical input interface 24 and an electrical output interface 25.
Specifically, three indicator lamps 23 on the housing 20 are respectively corresponding to the first indicator lamp 12, the second indicator lamp 13 and the third indicator lamp 14 one by one, and can respectively indicate the operating states of different relays, and further indicate the voltage output by the power supply. The electrical input interface 24 corresponds to the first power input terminal 1 and the second power input terminal 2 in embodiment 1, and the electrical output interface 25 corresponds to the first power output terminal 3 and the second power output terminal 4 in embodiment 1.
To sum up, this application is through setting up change over switch 6, first relay 9, second relay 10, third relay 11 to and first voltage conversion module 7 and second voltage conversion module 8, through controlling change over switch 6, can control different relay closures, thereby electric output interface can switch out 220V alternating current, 220V direct current or 110V direct current, adopts unified electric output interface 25 to realize the switching output between the different level voltages, and it is more convenient to use. A group of normally-closed terminals are arranged in the first relay 9, and normally-open terminals of the second relay 10 and the third relay 11 are electrically connected to the positive electrode and the negative electrode of the electric output interface 25 after passing through the normally-closed terminals, so that the normally-closed terminals are in a disconnection state in the process of outputting alternating current by the electric output interface 25, the electric isolation is realized, the output voltage is ensured to be the only output voltage, and the use process is safer; this application sets up handle 21 at the top of test power supply shell 20, sets up pulley 22 in test power supply's bottom, can improve test power supply's transport, the convenience of removal.
The present utility model is not limited to the above-described embodiments, but, if various modifications or variations of the present utility model are not departing from the spirit and scope of the present utility model, the present utility model is intended to include such modifications and variations as fall within the scope of the claims and the equivalents thereof.
Claims (8)
1. A multiple output test power supply, comprising: the device comprises a first power input end used for being connected with a live wire, a second power input end used for being connected with a zero line, a first power output end used for being connected with the positive electrode of a load, a second power output end used for being connected with the negative electrode of the load, a storage battery, a change-over switch used for being communicated with or disconnected from a control circuit to change the output voltage of a test power supply, a first voltage conversion module used for converting direct current output by the storage battery into 220V direct current, a second voltage conversion module used for converting direct current output by the storage battery into 110V direct current, a first relay, a second relay and a third relay, wherein the first power input end is used for being connected with the live wire;
the first power input end is connected with the first power output end after passing through a first controlled switch of the first relay, and the second power input end is connected with the second power output end after passing through a second controlled switch of the first relay;
the first interface of the change-over switch is connected with the first power input end, and the second interface of the change-over switch is connected with the second power input end after passing through the control end of the first relay; the seventh interface of the change-over switch is connected with the positive electrode of the storage battery after passing through the control end of the second relay, and the eighth interface of the change-over switch is connected with the positive electrode of the storage battery; an eleventh interface of the change-over switch is connected with the positive electrode of the storage battery after passing through the control end of the third relay, and a twelfth interface of the change-over switch is connected with the positive electrode of the storage battery;
the positive electrode of the storage battery is also connected with the positive input end of the first voltage conversion module and the positive input end of the second voltage conversion module respectively, and the negative electrode of the storage battery is also connected with the negative input end of the first voltage conversion module and the negative input end of the second voltage conversion module respectively;
the positive output end of the first voltage conversion module is connected with the first power supply output end after passing through a first controlled switch of the second relay; the negative output end of the first voltage conversion module is connected with the second power supply output end after passing through a second controlled switch of the second relay;
the positive output end of the second voltage conversion module is connected with the first power supply output end after passing through the first controlled switch of the third relay; the negative output end of the second voltage conversion module is connected with the second power supply output end after passing through a second controlled switch of the third relay.
2. The multi-output test power supply of claim 1, wherein the third, fifth and ninth interfaces of the transfer switch are all connected to the first power input terminal;
the fourth interface and the sixth interface of the change-over switch are connected with the live wire connecting end of the first voltage conversion module;
the tenth interface of the change-over switch is connected with the live wire connecting end of the second voltage conversion module;
the zero line connecting end of the first voltage conversion module and the zero line connecting end of the second voltage conversion module are both connected with the second power input end.
3. The multiple output test power supply of claim 1, further comprising: the first indicator lamp, the second indicator lamp and the third indicator lamp;
two ends of the first indicator lamp are respectively connected with two control ends of the first relay;
two ends of the second indicator lamp are respectively connected with two control ends of the second relay;
and two ends of the third indicator lamp are respectively connected with two control ends of the third relay.
4. The multi-output test power supply according to claim 1, further comprising a first voltmeter and a second voltmeter, wherein two ends of the first voltmeter are respectively connected with two ends of the first relay; and two ends of the second voltmeter are respectively connected with the first power supply output end and the second power supply output end.
5. The multiple output test power supply of claim 1, wherein the first relay further comprises a first normally closed controlled switch and a second normally closed controlled switch;
the first controlled switch of the second relay and the first controlled switch of the third relay are connected with the first power supply output end after passing through the first normally closed controlled switch;
the second controlled switch of the second relay and the second controlled switch of the third relay are connected with the second power supply output end after passing through the second normally closed controlled switch.
6. The multiple output test power supply of claim 1, further comprising a first safety switch, a second safety switch, and a third safety switch;
the first power input end is connected with the live wire after passing through the first safety switch, and the second power input end is connected with the zero line after passing through the first safety switch;
the positive electrode of the storage battery is respectively connected with the positive input end of the first voltage conversion module and the positive input end of the second voltage conversion module after passing through the second safety switch; the negative electrode of the storage battery is connected with the negative input end of the first voltage conversion module and the negative input end of the second voltage conversion module respectively after passing through the second safety switch;
the first power output end is connected with the positive electrode of the load after passing through the third safety switch, and the second power output end is connected with the negative electrode of the load after passing through the second safety switch.
7. The multiple output test power supply of claim 1, further comprising: the top of the shell is fixedly provided with a handle; the bottom of the shell is provided with a plurality of pulleys.
8. The multi-output test power supply of claim 7, wherein the side of the housing is further provided with a plurality of indicator lights, electrical input interfaces, and electrical output interfaces.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322196041.XU CN220628945U (en) | 2023-08-15 | 2023-08-15 | Multi-output test power supply |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322196041.XU CN220628945U (en) | 2023-08-15 | 2023-08-15 | Multi-output test power supply |
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| CN220628945U true CN220628945U (en) | 2024-03-19 |
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| CN202322196041.XU Active CN220628945U (en) | 2023-08-15 | 2023-08-15 | Multi-output test power supply |
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- 2023-08-15 CN CN202322196041.XU patent/CN220628945U/en active Active
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