CN210490116U - GCK low-voltage draw-out type switch cabinet - Google Patents
GCK low-voltage draw-out type switch cabinet Download PDFInfo
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- CN210490116U CN210490116U CN201921541251.5U CN201921541251U CN210490116U CN 210490116 U CN210490116 U CN 210490116U CN 201921541251 U CN201921541251 U CN 201921541251U CN 210490116 U CN210490116 U CN 210490116U
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Abstract
The utility model discloses a GCK low-voltage draw-out switch cabinet, which comprises a cabinet body, wherein a circuit board is arranged at the upper end of the inner part of the cabinet body, and a power supply module is arranged on the circuit board; the power supply module comprises a voltage input end, a first capacitor, a first voltage-regulator tube, a first triode, a first resistor, a second triode, a third triode, a fourth triode, a second voltage-regulator tube, a third resistor, a fifth triode, a second resistor, a fourth potentiometer, a second capacitor and a voltage output end, wherein the voltage input end is respectively connected with one end of the first capacitor, the anode of the first voltage-regulator tube and one end of the fifth resistor, the emitting electrode of the first triode is respectively connected with the other end of the first capacitor and the cathode of the first voltage-regulator tube, and the collecting electrode of the first triode is respectively connected with the emitting electrode of the second triode, the base electrode of the third triode and the collecting electrode of the fifth triode. Implement the utility model discloses a GCK low pressure pull-out type cubical switchboard has following beneficial effect: the safety and the reliability of the circuit are higher.
Description
Technical Field
The utility model relates to a cubical switchboard field, in particular to GCK (G is cabinet type structure, and C is the pull-out type, and K is control center) low pressure pull-out type cubical switchboard.
Background
The GCK low-voltage draw-out type switch cabinet is widely applied to power distribution centers PC and motor control centers MCC of power plants, substations, factories and mining enterprises and high-rise and buildings, and is used as a low-voltage complete set of power distribution device for power distribution and motor centralized control and reactive compensation in power generation and power supply systems with the alternating current of 50-60Hz, the rated working voltage of 660 and below and the rated current of 4000A and below. The power supply part of the traditional GCK low-voltage draw-out type switch cabinet lacks corresponding circuit protection functions, such as: the safety and reliability of the circuit are poor due to the lack of the current-limiting protection function.
SUMMERY OF THE UTILITY MODEL
The to-be-solved technical problem of the utility model lies in, to prior art's above-mentioned defect, provide the higher GCK low pressure pull-out type cubical switchboard of security and reliability of a circuit.
The utility model provides a technical scheme that its technical problem adopted is: the GCK low-voltage draw-out type switch cabinet comprises a cabinet body, wherein the cabinet body is divided into a left cavity and a right cavity by a vertical partition plate, a plurality of drawer units are arranged in the left cavity from top to bottom, an operating handle and an electrical parameter display screen are arranged on the outer side of a panel of each drawer unit, the right cavity is a cable chamber, a leakage indicator lamp is installed on the outer wall of the cabinet body, insulating layers are respectively arranged on the inner wall of each drawer unit and the inner wall of the cable chamber, an observation window is further arranged on the panel of each drawer unit, a circuit board is installed at the upper end of the inner part of the cabinet body, and a;
the power supply module comprises a voltage input end, a first capacitor, a first voltage-regulator tube, a first triode, a first resistor, a second triode, a third triode, a fourth triode, a second voltage-regulator tube, a third resistor, a fifth triode, a second resistor, a fourth potentiometer, a second capacitor and a voltage output end, wherein the voltage input end is respectively connected with one end of the first capacitor, the anode of the first voltage-regulator tube and one end of the fifth resistor, the emitter of the first triode is respectively connected with the other end of the first capacitor and the cathode of the first voltage-regulator tube, the collector of the first triode is respectively connected with the emitter of the second triode, the base of the third triode and the collector of the fifth triode, the base of the second triode is respectively connected with one end of the first resistor and the cathode of the second voltage-regulator tube, the anode of the second voltage-regulator tube is connected with one end of the third resistor, the other end of the voltage input end is respectively connected with the other end of the first resistor, the collector of the second triode, the collector of the third triode and the collector of the fourth triode, and the base of the fifth triode is respectively connected with the emitter of the fourth triode and one end of the second resistor;
the other end of the fifth resistor is respectively connected with a fixed end of a fourth potentiometer, one end of a second capacitor and one end of a voltage output end, the base of the first triode is connected with the sliding end of the fourth potentiometer, the other fixed end of the fourth potentiometer is respectively connected with the emitting electrode of the fifth triode, the other end of the second resistor, the other end of the third resistor, the other end of the second capacitor and the other end of the voltage output end, and the resistance value of the fifth resistor is 48k omega.
In the GCK low-voltage draw-out type switch cabinet of the present invention, the power supply module further includes a second diode, an anode of the second diode is connected to a sliding end of the fourth potentiometer, a cathode of the second diode is connected to a base of the first triode, and a model of the second diode is S-272T.
GCK low pressure pull-out type cubical switchboard in, power module still includes sixth resistance, the one end of sixth resistance with the collecting electrode of first triode is connected, the other end of sixth resistance with the base of third triode is connected, the resistance of sixth resistance is 37k omega.
In the GCK low voltage draw-out type switch cabinet of the present invention, the first triode is an NPN type triode.
In the GCK low voltage draw-out type switch cabinet of the present invention, the second triode is an NPN type triode.
In the GCK low voltage draw-out type switch cabinet of the present invention, the third triode is an NPN type triode.
In the GCK low voltage draw-out type switch cabinet of the present invention, the fourth triode is an NPN type triode.
In the GCK low voltage draw-out type switch cabinet of the present invention, the fifth triode is an NPN type triode.
Implement the utility model discloses a GCK low pressure pull-out type cubical switchboard has following beneficial effect: the cabinet body is arranged, the upper end in the cabinet body is provided with the circuit board, and the circuit board is provided with the power supply module; the power supply module comprises a voltage input end, a first capacitor, a first voltage-regulator tube, a first triode, a first resistor, a second triode, a third triode, a fourth triode, a second voltage-regulator tube, a third resistor, a fifth triode, a second resistor, a fourth potentiometer, a second capacitor and a voltage output end, and the fifth resistor is used for current-limiting protection, so that the safety and the reliability of the circuit are high.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.
Fig. 1 is a schematic structural diagram of an embodiment of the GCK low-voltage drawer-type switch cabinet of the present invention;
fig. 2 is a schematic circuit diagram of the power supply module in the embodiment.
Detailed Description
The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.
In the embodiment of the GCK low-voltage drawer-type switch cabinet of the present invention, the schematic structural diagram of the GCK low-voltage drawer-type switch cabinet is shown in fig. 1. In fig. 1, this GCK low-voltage draw-out type switch cabinet includes the cabinet body 1, two cavitys about dividing into through erecting the baffle in the cabinet body 1, left side cavity top-down is equipped with a plurality of drawer unit 2, all be equipped with operating handle 22 and electrical parameter display screen 24 on each drawer unit 2's the panel outside, the right side cavity is cable chamber 3, leakage indicator 5 is installed to the outer wall of the cabinet body 1, be equipped with insulating layer 4 on drawer unit 2's the inner wall and the 3 inner walls of cable chamber respectively, can prevent that the cabinet body 1 is electrified, insulating layer 4 is used for separating inside electrical apparatus and the cabinet body 1, further reduction cabinet body 1 electrified probability. The panel of the drawer unit 2 is also provided with an observation window 23.
The GCK low-voltage draw-out type switch cabinet is suitable for power users of power plants, transformer substations, industrial and mining enterprises and the like to be used in a power distribution system with the alternating current of 50Hz, the maximum working voltage of 660V and the maximum working current of 3150A, and is used for power distribution, motor control, illumination and other power conversion distribution control of power distribution equipment.
The GCK low-voltage draw-out switch cabinet has the advantages of high breaking capacity, good dynamic and thermal stability, more loops contained in one cabinet body 1, occupied area saving, attractive appearance, high protection level, safety, reliability, convenience in maintenance and the like.
The circuit board 6 is installed to the inside upper end of the cabinet body 1, is equipped with power module on the circuit board 6. Fig. 2 is a schematic circuit diagram of a power supply module in this embodiment, in fig. 2, the power supply module includes a voltage input terminal Vin, a first capacitor C1, a first voltage regulator D1, a first transistor Q1, a first resistor R1, a second transistor Q2, a third transistor Q3, a fourth transistor Q4, a second voltage regulator D2, a third resistor R3, a fifth resistor R5, a fifth transistor Q5, a second resistor R2, a fourth potentiometer RP4, a second capacitor C2, and a voltage output terminal Vo, wherein the voltage input terminal Vin is respectively connected with one end of the first capacitor C1, an anode of the first capacitor D1, and one end of the fifth resistor R5, an emitter of the first transistor Q1 is respectively connected with the other end of the first capacitor C1 and a cathode of the first voltage regulator D1, a collector of the first transistor 67q 1 is respectively connected with an emitter of the second capacitor Q2, a base of the third transistor Q3, and a collector of the fifth transistor Q5, the base of the second triode Q2 is connected with one end of the first resistor R1 and the cathode of the second triode D2 respectively, the anode of the second triode D2 is connected with one end of the third resistor R3, the other end of the voltage input end Vin is connected with the other end of the first resistor R1, the collector of the second triode Q2, the collector of the third triode Q3 and the collector of the fourth triode Q4 respectively, and the base of the fifth triode Q5 is connected with the emitter of the fourth triode Q4 and one end of the second resistor R2 respectively.
The other end of the fifth resistor R5 is connected to a fixed end of the fourth potentiometer RP4, one end of the second capacitor C2 and one end of the voltage output Vo, the base of the first transistor Q1 is connected to the sliding end of the fourth potentiometer RP4, and the other fixed end of the fourth potentiometer RP4 is connected to the emitter of the fifth transistor Q5, the other end of the second resistor R2, the other end of the third resistor R3, the other end of the second capacitor C2 and the other end of the voltage output Vo.
The fifth resistor R5 is a current limiting resistor for current limiting protection. The current limiting protection principle is as follows: when the current of the branch where the fifth resistor R5 is located is large, the current of the branch where the fifth resistor R5 is located can be reduced by the fifth resistor R5, so that the branch can be kept in a normal operating state, and the components in the circuit cannot be burnt out due to the large current, so that the safety and reliability of the circuit are high. It should be noted that, in the present embodiment, the resistance of the fifth resistor R5 is 48k Ω. Of course, in practical applications, the resistance of the fifth resistor R5 may be adjusted according to specific situations, that is, the resistance of the fifth resistor R5 may be increased or decreased according to specific situations.
The working principle of the power supply module is as follows: the power supply module is additionally provided with a third triode Q2 and a second voltage-regulator tube D2 besides a basic voltage-regulator circuit formed by electronic elements such as a fourth triode Q4 and a fifth triode Q5, so that the voltage of a collector of the first triode Q1 is stable, and the influence of input voltage variation is reduced; the base voltage of the third triode Q3 is equal to the output voltage plus the stable voltage of the second voltage regulator tube D2, and the emitter voltage of the first triode Q1 cannot be influenced even if the input voltage changes, so that the stable output of the voltage is ensured.
In this embodiment, the first transistor Q1 is an NPN transistor, the second transistor Q2 is an NPN transistor, the third transistor Q3 is an NPN transistor, the fourth transistor Q4 is an NPN transistor, and the fifth transistor Q5 is an NPN transistor. Certainly, in practical applications, the first transistor Q1, the second transistor Q2, the third transistor Q3, the fourth transistor Q4 and the fifth transistor Q5 are all PNP transistors, but the structure of the circuit is also changed correspondingly.
In this embodiment, the power supply module further includes a second diode D2, an anode of the second diode D2 is connected to the sliding end of the fourth potentiometer RP4, and a cathode of the second diode D2 is connected to the base of the first transistor Q1. The second diode D2 is a current limiting diode for current limiting protection of the base current of the first transistor Q1. The current limiting protection principle is as follows: when the base current of the first triode Q1 is large, the second diode D2 can reduce the base current of the first triode Q1 to keep the base current in a normal working state, so that the elements in the circuit are not burnt out due to too large current, and the safety and reliability of the circuit are further enhanced. It should be noted that in the present embodiment, the second diode D2 has a model number of S-272T. Of course, in practical applications, the second diode D2 may also be another type of diode with similar functions.
In this embodiment, the power supply module further includes a sixth resistor R6, one end of the sixth resistor R6 is connected to the collector of the first transistor Q1, and the other end of the sixth resistor R6 is connected to the base of the third transistor Q3. The sixth resistor R6 is a current limiting resistor for current limiting protection. The current limiting protection principle is as follows: when the current of the branch where the sixth resistor R6 is located is large, the magnitude of the current of the branch where the sixth resistor R6 is located can be reduced by the sixth resistor R6, so that the branch can be kept in a normal operating state, and the component in the circuit can not be burned out due to the large current, so that the safety and reliability of the circuit can be further enhanced. It should be noted that, in the present embodiment, the resistance of the sixth resistor R6 is 37k Ω. Of course, in practical applications, the resistance of the sixth resistor R6 may be adjusted according to specific situations, that is, the resistance of the sixth resistor R6 may be increased or decreased according to specific situations.
In short, in this embodiment, since the current-limiting resistor is provided in the power supply module, the safety and reliability of the circuit are high.
The above description is only a preferred embodiment of the present invention, and should not be taken as limiting the invention, and any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (8)
1. A GCK low-voltage draw-out type switch cabinet is characterized by comprising a cabinet body, wherein the cabinet body is divided into a left cavity and a right cavity by a vertical partition plate, a plurality of drawer units are arranged in the left cavity from top to bottom, an operating handle and an electrical parameter display screen are arranged on the outer side of a panel of each drawer unit, the right cavity is a cable chamber, a leakage indicator lamp is arranged on the outer wall of the cabinet body, insulating layers are respectively arranged on the inner wall of each drawer unit and the inner wall of the cable chamber, an observation window is further arranged on the panel of each drawer unit, a circuit board is arranged at the upper end of the inner part of the cabinet body, and a;
the power supply module comprises a voltage input end, a first capacitor, a first voltage-regulator tube, a first triode, a first resistor, a second triode, a third triode, a fourth triode, a second voltage-regulator tube, a third resistor, a fifth triode, a second resistor, a fourth potentiometer, a second capacitor and a voltage output end, wherein the voltage input end is respectively connected with one end of the first capacitor, the anode of the first voltage-regulator tube and one end of the fifth resistor, the emitter of the first triode is respectively connected with the other end of the first capacitor and the cathode of the first voltage-regulator tube, the collector of the first triode is respectively connected with the emitter of the second triode, the base of the third triode and the collector of the fifth triode, the base of the second triode is respectively connected with one end of the first resistor and the cathode of the second voltage-regulator tube, the anode of the second voltage-regulator tube is connected with one end of the third resistor, the other end of the voltage input end is respectively connected with the other end of the first resistor, the collector of the second triode, the collector of the third triode and the collector of the fourth triode, and the base of the fifth triode is respectively connected with the emitter of the fourth triode and one end of the second resistor;
the other end of the fifth resistor is respectively connected with a fixed end of a fourth potentiometer, one end of a second capacitor and one end of a voltage output end, the base of the first triode is connected with the sliding end of the fourth potentiometer, the other fixed end of the fourth potentiometer is respectively connected with the emitting electrode of the fifth triode, the other end of the second resistor, the other end of the third resistor, the other end of the second capacitor and the other end of the voltage output end, and the resistance value of the fifth resistor is 48k omega.
2. The GCK low-voltage draw-out switchgear according to claim 1, wherein the power supply module further comprises a second diode, an anode of the second diode is connected with a sliding end of the fourth potentiometer, a cathode of the second diode is connected with a base electrode of the first triode, and the second diode is S-272T in type.
3. The GCK low-voltage draw-out type switch cabinet according to claim 2, wherein the power supply module further comprises a sixth resistor, one end of the sixth resistor is connected with a collector of the first triode, the other end of the sixth resistor is connected with a base of the third triode, and the resistance value of the sixth resistor is 37k Ω.
4. A GCK low voltage draw out switchgear as claimed in any one of claims 1 to 3 wherein the first transistor is an NPN transistor.
5. A GCK low voltage draw out switchgear as claimed in any one of claims 1 to 3 wherein the second transistor is an NPN transistor.
6. A GCK low voltage draw out switchgear as claimed in any one of claims 1 to 3 wherein the third transistor is an NPN transistor.
7. A GCK low voltage draw out switchgear as claimed in any one of claims 1 to 3 wherein the fourth transistor is an NPN transistor.
8. A GCK low voltage draw out switchgear as claimed in any one of claims 1 to 3 wherein the fifth transistor is an NPN transistor.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921541251.5U CN210490116U (en) | 2019-09-17 | 2019-09-17 | GCK low-voltage draw-out type switch cabinet |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921541251.5U CN210490116U (en) | 2019-09-17 | 2019-09-17 | GCK low-voltage draw-out type switch cabinet |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN210490116U true CN210490116U (en) | 2020-05-08 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201921541251.5U Expired - Fee Related CN210490116U (en) | 2019-09-17 | 2019-09-17 | GCK low-voltage draw-out type switch cabinet |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN210490116U (en) |
-
2019
- 2019-09-17 CN CN201921541251.5U patent/CN210490116U/en not_active Expired - Fee Related
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| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20200508 Termination date: 20210917 |
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| CF01 | Termination of patent right due to non-payment of annual fee |