CN214337142U - Novel AC/DC low-voltage comprehensive distribution box - Google Patents
Novel AC/DC low-voltage comprehensive distribution box Download PDFInfo
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- CN214337142U CN214337142U CN202121983202.4U CN202121983202U CN214337142U CN 214337142 U CN214337142 U CN 214337142U CN 202121983202 U CN202121983202 U CN 202121983202U CN 214337142 U CN214337142 U CN 214337142U
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Abstract
A novel AC/DC low-voltage comprehensive distribution box comprises a main power supply, a fuse and a voltage reduction control loop; the voltage reduction control loop comprises a change-over switch I, a knob switch, an intermediate relay I, a time relay I, a control and protection switch electrical appliance CPS, an intermediate relay III, a contactor I and a contactor II. The novel AC/DC low-voltage comprehensive distribution box of the utility model realizes the basic functions of the low-voltage distribution box, and simultaneously does not need to use a large number of measuring instruments, a large number of relays and contactors, thereby reducing the volume of the low-voltage distribution box and reducing the energy consumption; set up time delay relay in step-down control circuit, with contactor one, contactor two and control and protection switch electrical apparatus CPS cooperation, the disconnection of time delay relay contact time delay makes the auxiliary relay coil in control and protection switch electrical apparatus CPS lose the electricity, and the main contact disconnection withdraws from the start-up process, normal operating under full pressure, through the step-down start control system after the improvement, the practicality is stronger.
Description
Technical Field
The utility model belongs to the technical field of electric power system and equipment, specifically, relate to a novel block terminal is synthesized to alternating current-direct current low pressure.
Background
The distribution box is a low-voltage distribution device formed by assembling switch equipment, measuring instruments, protective electrical appliances and auxiliary equipment in a closed or semi-closed metal box or on a screen according to the electrical wiring requirement, so that the low-voltage comprehensive distribution box is an essential device in circuit design construction.
The alternating-current low-voltage distribution box is suitable for power users of power plants, transformer substations, industrial and mining enterprises and the like, and is used for converting, distributing and controlling electric energy of power, lighting and distribution equipment. The low-voltage direct-current distribution box can locally absorb distributed new energy, avoids multi-stage power conversion of a traditional alternating-current distribution network, and has the potential advantages of high maximum transmission power, low line loss, high electric energy quality and the like. At present, low-voltage direct current distribution is applied to large-scale data centers, commercial buildings and industrial parks, and provides reliable and efficient power supply for novel direct current loads such as electric automobiles, 5G base stations and direct current household appliances.
However, the conventional comprehensive distribution box is realized by adopting a relay and a contactor, and has the defects of large volume, large energy consumption and incomplete functions, for example, the remote control cannot be realized.
SUMMERY OF THE UTILITY MODEL
Utility model purpose: the utility model aims at providing a novel block terminal is synthesized to alternating current-direct current low pressure has solved the block terminal among the prior art bulky, the power consumption is big, the function is not healthy, the unstable problem of work.
The technical scheme is as follows: the utility model provides a novel AC/DC low-voltage comprehensive distribution box, which comprises a main power supply, a fuse and a voltage reduction control loop, wherein the fuse is connected on the trunk of the main power supply, and the voltage reduction control loop is connected with the main power supply; wherein, the voltage reduction control loop comprises a first change-over switch, a knob switch, a first intermediate relay, a first time relay, a CPS, a third intermediate relay, a first contactor and a second contactor, a branch formed by coils of the first change-over switch, the knob switch and the first intermediate relay is connected between a zero line and a live line of a main power supply in series, a branch formed by coils of the first change-over switch, the knob switch and the first time relay is connected between the zero line and the live line of the main power supply in series, the CPS is connected between the zero line and the live line of the main power supply, the CPS is connected with the first change-over switch, the third intermediate relay is connected between the CPS and the zero line of the main power supply, the first contactor is connected with the second contactor in parallel, and a cross point at one end of the first contactor and one end of the second contactor is connected with the zero line of the main power supply, and the intersection point of the other ends of the first contactor and the second contactor is connected with the knob switch. The utility model discloses a novel block terminal is synthesized to alternating current-direct current low pressure can carry out the on-line inspection protection to electrical faults such as short circuit, electric leakage that the block terminal takes place, and the preliminary examination can lock the power that has the total load of trouble, and trouble content and trouble branch road are told to the pilot lamp, and audible and visual alarm, this circuit design logical nature is strong, intelligent degree is high, multiple functional, safety insurance, sexual valence relative altitude, are worth wideling popularize and apply.
Furthermore, according to the novel alternating current/direct current low-voltage comprehensive distribution box, a power supply operation indicator lamp is connected between the zero line and the live line of the main power supply.
Furthermore, the novel alternating current-direct current low-voltage comprehensive distribution box is characterized in that a full-voltage indicator lamp is connected between the knob switch and a zero line of the main power supply.
Furthermore, according to the novel alternating current/direct current low-voltage comprehensive distribution box, a normally closed contact of the contactor II and a normally open contact of the intermediate relay I are connected in series on a branch circuit formed by the coil of the change-over switch I, the coil of the knob switch and the coil of the time relay I.
Furthermore, the novel alternating current-direct current low-voltage comprehensive distribution box is characterized in that the control and protection switch electric appliance CPS is composed of a second intermediate relay, a short circuit output contact and a fault contact, a coil of the second intermediate relay is connected with the first change-over switch, and a normally closed contact of a first time relay is connected between the coil of the second intermediate relay and the first change-over switch.
Further, in the novel alternating current/direct current low-voltage comprehensive distribution box, the short-circuit output contact is connected between the zero line and the live line of the main power supply, and a short-circuit indicator lamp is arranged between the short-circuit output contact and the zero line of the main power supply; the fault contact is connected between the zero line and the live line of the main power supply, and a fault indicator lamp is arranged between the fault contact and the zero line of the main power supply.
Furthermore, foretell novel block terminal is synthesized to alternating current-direct current low pressure, be connected with the step-down pilot lamp between the zero line of knob switch and main power supply, be connected with the normally open contact of contactor one on the branch road at step-down pilot lamp place.
Furthermore, the novel alternating current-direct current low voltage comprehensive distribution box is characterized in that a branch where the full voltage indicator lamp is located is connected with a normally open contact of a contactor II.
Above-mentioned technical scheme can find out, the utility model discloses following beneficial effect has: the novel AC/DC low-voltage comprehensive distribution box of the utility model realizes the basic functions of the low-voltage distribution box, and simultaneously does not need to use a large number of measuring instruments, a large number of relays and contactors, thereby reducing the volume of the low-voltage distribution box and reducing the energy consumption; set up time delay relay in step-down control circuit, with contactor one, contactor two and control and protection switch electrical apparatus CPS cooperation, the disconnection of time delay relay contact time delay makes the auxiliary relay coil in control and protection switch electrical apparatus CPS lose the electricity, and the main contact disconnection withdraws from the start-up process, normal operating under full pressure, through the step-down start control system after the improvement, the practicality is stronger.
Drawings
Fig. 1 is the electric schematic diagram of novel block terminal is synthesized to alternating current-direct current low pressure.
In the figure: the automatic control system comprises a main power supply 1, a fuse 2, a voltage reduction control loop 3, a first change-over switch 4, a knob switch 5, a first intermediate relay 6, a first time relay 7, a control and protection switch CPS8, a third intermediate relay 9, a first contactor 10, a second contactor 11, a power supply operation indicator lamp 12, a full-voltage indicator lamp 13, a second intermediate relay 14, a short-circuit output contact 15, a fault contact 16, a short-circuit indicator lamp 17, a fault indicator lamp 18 and a voltage reduction indicator lamp 19.
Detailed Description
Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the drawings are exemplary and intended to be used for explaining the present invention, and should not be construed as limiting the present invention.
In the description of the present invention, it is to be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "clockwise", "counterclockwise" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and to simplify the description, but do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore should not be construed as limiting the present invention.
Furthermore, the terms "first", "second" and "first" 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 defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the present invention, unless otherwise specified, "a plurality" means two or more unless explicitly defined otherwise.
In the present invention, unless otherwise expressly specified or limited, the terms "mounted," "connected," and "fixed" are to be construed broadly and may, for example, be fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood according to specific situations by those skilled in the art.
In the present disclosure, unless expressly stated or limited otherwise, the first feature "on" or "under" the second feature may comprise direct contact between the first and second features, or may comprise contact between the first and second features not directly. Also, the first feature being "on," "above" and "over" the second feature includes the first feature being directly on and obliquely above the second feature, or merely indicating that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature includes the first feature being directly under and obliquely below the second feature, or simply meaning that the first feature is at a lesser elevation than the second feature.
Examples
The novel alternating current-direct current low-voltage comprehensive distribution box shown in fig. 1 comprises a main power supply 1, a fuse 2 and a voltage reduction control loop 3, wherein the fuse 2 is connected to a trunk line of the main power supply 1, and the voltage reduction control loop 3 is connected with the main power supply 1; wherein, the voltage-reducing control loop 3 comprises a change-over switch I4, a knob switch 5, an intermediate relay I6, a time relay I7, a control and protection switch electrical apparatus CPS8, an intermediate relay III 9, a contactor I10 and a contactor II 11, a branch formed by the coils of the change-over switch I4, the knob switch 5 and the intermediate relay I6 is connected between a zero line and a live line of the main power supply 1 in series, a branch formed by the coils of the change-over switch I4, the knob switch 5 and the time relay I7 is connected between the zero line and the live line of the main power supply 1 in series, the control and protection switch electrical apparatus CPS8 is connected between the zero line and the live line of the main power supply 1, a control and protection switch electrical apparatus CPS8 is connected with the change-over switch I4, the intermediate relay III 9 is connected between the control and protection switch electrical apparatus CPS8 and the zero line of the main power supply 1, the contactor I10 is connected with the contactor II 11 in parallel, and the intersection point of one end of the first contactor 10 and one end of the second contactor 11 is connected with the zero line of the main power supply 1, and the intersection point of the other end of the first contactor 10 and the other end of the second contactor 11 is connected with the knob switch 5.
The circuit is provided with an indicator lamp capable of clearly indicating the operation of the distribution box, and specifically, a power supply operation indicator lamp 12 is connected between a zero line and a live line of the main power supply 1. And a full-pressure indicator lamp 13 is connected between the knob switch 5 and the zero line of the main power supply 1. And a branch where the full-voltage indicator light 13 is located is connected with a normally open contact of the second contactor 11. A voltage reduction indicator lamp 19 is connected between the knob switch 5 and a zero line of the main power supply 1, and a branch where the voltage reduction indicator lamp 19 is located is connected with a normally open contact of the contactor I10.
In addition, a branch formed by the coils of the first change-over switch 4, the knob switch 5 and the first time relay 7 is connected with a normally closed contact of a second contactor 11 and a normally open contact of a first intermediate relay 6 in series.
In addition, the control and protection switching device CPS8 is composed of a second intermediate relay 14, a short-circuit output contact 15 and a fault contact 16, wherein a coil of the second intermediate relay 14 is connected with a first change-over switch 4, and a normally closed contact of a first time relay 7 is connected between the coil of the second intermediate relay 14 and the first change-over switch 4. The short circuit output contact 15 is connected between the zero line and the live line of the main power supply 1, and a short circuit indicator lamp 17 is arranged between the short circuit output contact 15 and the zero line of the main power supply 1; the fault contact 16 is connected between the neutral and live conductors of the mains power supply 1 and a fault indicator light 18 is provided between the fault contact 16 and the neutral conductor of the mains power supply 1.
The foregoing is only a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, a plurality of modifications can be made without departing from the principles of the present invention, and these modifications should also be regarded as the protection scope of the present invention.
Claims (8)
1. The utility model provides a novel block terminal is synthesized to alternating current-direct current low pressure which characterized in that: the high-voltage-reduction control circuit comprises a main power supply (1), a fuse (2) and a voltage-reduction control circuit (3), wherein the fuse (2) is connected to a trunk line of the main power supply (1), and the voltage-reduction control circuit (3) is connected with the main power supply (1);
wherein the voltage reduction control loop (3) comprises a first change-over switch (4), a knob switch (5), a first intermediate relay (6), a first time relay (7), a control and protection switch electric appliance CPS (8), a third intermediate relay (9), a first contactor (10) and a second contactor (11), a branch formed by coils of the first change-over switch (4), the knob switch (5) and the first intermediate relay (6) is connected between a zero line and a live line of the main power supply (1) in series, a branch formed by coils of the first change-over switch (4), the knob switch (5) and the first time relay (7) is connected between the zero line and the live line of the main power supply (1) in series, the control and protection switch electric appliance CPS (8) is connected between the zero line and the live line of the main power supply (1), and the control and protection switch electric appliance CPS (8) is connected with the first change-over switch (4), the utility model discloses a switch, including main power supply (1), auxiliary relay three (9), contactor one (10) and contactor two (11) one end are crossed the point and are connected with the zero line of main power supply (1), the crossing point and the rotary switch (5) of contactor one (10) and contactor two (11) other end are connected.
2. The novel alternating current-direct current low voltage comprehensive distribution box of claim 1, characterized in that: and a power supply operation indicator lamp (12) is connected between the zero line and the live line of the main power supply (1).
3. The novel alternating current-direct current low voltage comprehensive distribution box of claim 1, characterized in that: and a full-voltage indicator lamp (13) is connected between the knob switch (5) and the zero line of the main power supply (1).
4. The novel alternating current-direct current low voltage comprehensive distribution box of claim 1, characterized in that: and a normally closed contact of the contactor II (11) and a normally open contact of the intermediate relay I (6) are connected in series on a branch circuit formed by the coils of the change-over switch I (4), the knob switch (5) and the time relay I (7).
5. The novel alternating current-direct current low voltage comprehensive distribution box of claim 1, characterized in that: the control and protection switch electrical apparatus CPS (8) is composed of an intermediate relay II (14), a short circuit output contact (15) and a fault contact (16), a coil of the intermediate relay II (14) is connected with a change-over switch I (4), and a normally closed contact of a time relay I (7) is connected between the coil of the intermediate relay II (14) and the change-over switch I (4).
6. The novel AC/DC low-voltage comprehensive distribution box according to claim 5, wherein: the short circuit output contact (15) is connected between a zero line and a live line of the main power supply (1), and a short circuit indicator lamp (17) is arranged between the short circuit output contact (15) and the zero line of the main power supply (1); the fault contact (16) is connected between the zero line and the live line of the main power supply (1), and a fault indicator lamp (18) is arranged between the fault contact (16) and the zero line of the main power supply (1).
7. The novel alternating current-direct current low voltage comprehensive distribution box of claim 1, characterized in that: a voltage reduction indicator lamp (19) is connected between the knob switch (5) and a zero line of the main power supply (1), and a normally open contact of the contactor I (10) is connected to a branch where the voltage reduction indicator lamp (19) is located.
8. The novel AC/DC low-voltage comprehensive distribution box according to claim 3, wherein: and a branch circuit where the full-voltage indicator lamp (13) is located is connected with a normally open contact of the second contactor (11).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121983202.4U CN214337142U (en) | 2021-08-23 | 2021-08-23 | Novel AC/DC low-voltage comprehensive distribution box |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121983202.4U CN214337142U (en) | 2021-08-23 | 2021-08-23 | Novel AC/DC low-voltage comprehensive distribution box |
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| Publication Number | Publication Date |
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| CN214337142U true CN214337142U (en) | 2021-10-01 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202121983202.4U Active CN214337142U (en) | 2021-08-23 | 2021-08-23 | Novel AC/DC low-voltage comprehensive distribution box |
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| CN (1) | CN214337142U (en) |
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- 2021-08-23 CN CN202121983202.4U patent/CN214337142U/en active Active
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