CN211528468U - Direct current voltage division terminal box - Google Patents
Direct current voltage division terminal box Download PDFInfo
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- CN211528468U CN211528468U CN201921405037.7U CN201921405037U CN211528468U CN 211528468 U CN211528468 U CN 211528468U CN 201921405037 U CN201921405037 U CN 201921405037U CN 211528468 U CN211528468 U CN 211528468U
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Abstract
The utility model discloses a direct current partial pressure terminal box belongs to vary voltage experimental facilities technical field. The direct current voltage division terminal box comprises a box, an input terminal, an output terminal and a voltage division circuit board, wherein the voltage division circuit board is fixed inside the box, the input terminal and the output terminal are respectively arranged at the two ends of the voltage division circuit board, the input terminal and the output terminal penetrate through the box and are positioned at the two sides of the box, the input terminal is connected with equipment to be tested, and the output terminal is connected with a voltage measurement module circuit; direct current partial pressure terminal box can be used to detect the magnitude of voltage about 100V ~ 2000V, direct current partial pressure terminal box small in size as the final stage partial pressure, conveniently dismantles and connects, and the mountable uses with the measuring module circuit connection back in equipment such as electric power detection cabinet the inside. The two ends of the direct current voltage division terminal box are provided with the wiring terminal rows, wiring is quick and convenient during use, and wrong wiring is not easy to connect clearly and definitely.
Description
Technical Field
The utility model relates to a direct current partial pressure terminal box belongs to vary voltage experimental facilities technical field.
Background
In direct current power transmission and transformation, voltage is often required to be monitored; because the voltage to be measured is hundreds of kilovolts, the direct measurement puts high requirements on the insulation strength and the using environment condition of the measuring instrument, and therefore, a voltage division measure is adopted, the high voltage is converted into the voltage below dozens of volts, and the voltage is measured by a general measuring instrument.
The existing high-voltage divider is an independent device, has larger volume and weight, is used for a preceding-stage voltage division link of voltage division, and is suitable for forming a measuring loop or a system together with other equipment after being independently installed. The voltage divider is not suitable for small control cabinets, so that a voltage divider with small volume, quick and convenient wiring and clear identification is urgently needed to be found.
Disclosure of Invention
The utility model aims at providing a direct current partial pressure terminal box, including box 1, input terminal 2, output terminal 3, bleeder circuit board 4 fixes inside box 1, and the both ends of bleeder circuit board 4 are equipped with input terminal 2, output terminal 3 respectively, and input terminal 2 and output terminal 3 pass box 1 and lie in the both sides of box 1, and input terminal 2 is connected with the equipment to be measured, and output terminal 3 is connected with voltage measurement module circuit; the voltage dividing circuit board 4 is provided with more than one voltage dividing circuit.
Preferably, the voltage dividing circuit of the present invention includes a first resistor R1, a second resistor R2, a third resistor R3, a fourth resistor R4, a fifth resistor R5, a sixth resistor R6, and a capacitor C1, wherein one end of the first resistor R1 is connected to the input terminal + Vin1, and the other end is connected in series to the second resistor R2, the third resistor R3, and the fourth resistor R4 in sequence; one end of a fourth resistor R4 is connected with one end of a fifth resistor R5, a sixth resistor R6 and a capacitor C1 and then connected with an output terminal + Vout1, and the other ends of the fifth resistor R5, the sixth resistor R6 and the capacitor C1 are connected and then respectively connected with the output terminal-Vout 1 and an input terminal-Vin 1; other voltage division circuits that meet the requirements can also be used in the present invention.
Preferably, resistance is the metal film precision resistor, can ensure that there are circuit parameter stable, accurate.
Preferably, the resistance values of the first resistor R1, the second resistor R2, the third resistor R3 and the fourth resistor R4 are all 510K Ω, the resistance value of the fifth resistor R5 is 470K Ω, and the resistance value of the sixth resistor R6 is 360K Ω.
Preferably, the first resistor R1, the second resistor R2, the third resistor R3, the fourth resistor R4, the fifth resistor R5, and the sixth resistor R6 are fixed to the voltage dividing circuit board 4 by welding, and may be fixed to the voltage dividing circuit board 4 by other methods according to actual needs.
Preferably, distance between two adjacent resistance is 8 ~ 15mm, keeps the distance and can ensures the dielectric strength under the measuring voltage.
Preferably, the size of box 1 is long 90 ~ 100mm wide 20 ~ 30mm, high 35 ~ 45mm, and the small-size is conveniently put into the switch board the inside and is used.
Preferably, the input terminal 2 and the output terminal 3 of the present invention are marked with "+" and "-" marks, which facilitates quick connection and prevents wrong connection.
Preferably, 1 bottom of box is equipped with a plurality of louvres, the convenient heat dissipation.
The utility model discloses a use: according to actual needs, a direct-current voltage division terminal box is arranged in a control cabinet to be used as final-stage voltage division, an input terminal 2 is connected with equipment to be measured, and an output terminal 3 is connected with a voltage measuring instrument; opening the device can be detected.
The utility model has the advantages that:
(1) direct current partial pressure terminal box can be used to detect the magnitude of voltage about 100V ~ 2000V, direct current partial pressure terminal box small in size, as the final stage partial pressure, conveniently dismantles and connects, and the mountable uses with the measuring module circuit connection back in equipment such as electric power detection cabinet the inside.
(2) Direct current partial pressure terminal box both ends are equipped with binding post row, and it is convenient fast to work a telephone switchboard during the use, and the sign is difficult for connecing wrong line definitely.
Drawings
Fig. 1 is a schematic structural diagram of the present invention.
Fig. 2 is a schematic circuit diagram of the dc voltage-dividing terminal box of the present invention.
In the figure: 1-a box; 2-an input terminal; 3-an output terminal; 4-partial pressure circuit board.
Detailed Description
The present invention will be described in further detail with reference to the following drawings and specific embodiments, but the scope of the present invention is not limited to the above description.
Example 1
The utility model provides a direct current partial pressure terminal box, includes box 1, input terminal 2, output terminal 3, partial pressure circuit board 4, and partial pressure circuit board 4 is fixed inside box 1, and partial pressure circuit board 4's both ends are equipped with input terminal 2, output terminal 3 respectively, and input terminal 2 and output terminal 3 pass box 1 both sides that are located box 1, and input terminal 2 is connected with the equipment that awaits measuring, and output terminal 3 and voltage measurement module circuit are connected. The input terminal 2 and the output terminal 3 are marked with the signs of plus and minus, so that the quick wiring is convenient, wrong wires are not easy to connect, and the box 1 is 95mm long, 25mm wide and 40mm high.
The voltage dividing circuit board 4 of this embodiment is provided with two voltage dividing circuits, each voltage dividing circuit includes a first resistor R1, a second resistor R2, a third resistor R3, a fourth resistor R4, a fifth resistor R5, a sixth resistor R6, and a capacitor C1, one end of the first resistor R1 is connected to the input terminal + Vin1, and the other end is sequentially connected to the second resistor R2, the third resistor R3, and the fourth resistor R4 in series; one end of the fourth resistor R4 is further connected to one end of the fifth resistor R5, the sixth resistor R6 and the capacitor C1 and then connected to the output terminal + Vout1, and the other ends of the fifth resistor R5, the sixth resistor R6 and the capacitor C1 are connected to the output terminal-Vout 1 and the input terminal-Vin 1, respectively.
The voltage dividing circuit II comprises resistors R7, R8, R9, R10, R11, R12 and a capacitor C2, and the circuit and the principle of the voltage dividing circuit II are the same as those of the voltage dividing circuit I, as shown in FIG. 2.
In this embodiment, the resistors are all metal film precision resistors and are commercially available products, and the resistance values of the first resistor R1, the second resistor R2, the third resistor R3 and the fourth resistor R4 are all 510K Ω, the resistance value of the fifth resistor R5 is 470K Ω, and the resistance value of the sixth resistor R6 is 360K Ω. The resistances of the resistors R7, R8, R9, and R10 are all 510K Ω, the resistance of R11 is 470K Ω, and the resistance of R12 is 360K Ω. All resistors are fixed on the voltage division circuit board 4 in a welding mode; the distance between two adjacent resistors is 8 mm.
Example 2
The structure of the embodiment is the same as that of the embodiment 1, the difference is that the size of the box 1 is 98mm long, 25mm wide and 45mm high, the distance between two adjacent resistors is 15mm, and a plurality of heat dissipation holes are formed in the bottom of the box 1.
Claims (9)
1. A direct-current voltage-dividing terminal box is characterized by comprising a box (1), an input terminal (2), an output terminal (3) and a voltage-dividing circuit board (4), wherein the voltage-dividing circuit board (4) is fixed inside the box (1), the input terminal (2) and the output terminal (3) are respectively arranged at two ends of the voltage-dividing circuit board (4), the input terminal (2) and the output terminal (3) penetrate through the box (1) and are positioned at two sides of the box (1), the input terminal (2) is connected with equipment to be tested, and the output terminal (3) is connected with a voltage measuring module circuit; more than one voltage division circuit is arranged on the voltage division circuit board (4).
2. The dc voltage dividing terminal block of claim 1, wherein: the voltage division circuit comprises a first resistor R1, a second resistor R2, a third resistor R3, a fourth resistor R4, a fifth resistor R5, a sixth resistor R6 and a capacitor C1, wherein one end of the first resistor R1 is connected with the input terminal + Vin1, and the other end of the first resistor R1 is sequentially connected with the second resistor R2, the third resistor R3 and the fourth resistor R4 in series; one end of the fourth resistor R4 is further connected to one end of the fifth resistor R5, the sixth resistor R6 and the capacitor C1 and then connected to the output terminal + Vout1, and the other ends of the fifth resistor R5, the sixth resistor R6 and the capacitor C1 are connected to the output terminal-Vout 1 and the input terminal-Vin 1, respectively.
3. The dc voltage dividing terminal block of claim 2, wherein: the resistors are all metal film precision resistors.
4. The dc voltage dividing terminal block of claim 2, wherein: the resistances of the first resistor R1, the second resistor R2, the third resistor R3 and the fourth resistor R4 are all 510K Ω, the resistance of the fifth resistor R5 is 470K Ω, and the resistance of the sixth resistor R6 is 360K Ω.
5. The dc voltage dividing terminal block of claim 2, wherein: the first resistor R1, the second resistor R2, the third resistor R3, the fourth resistor R4, the fifth resistor R5 and the sixth resistor R6 are fixed on the voltage division circuit board (4) in a welding mode.
6. The dc voltage dividing terminal block of claim 2, wherein: the distance between two adjacent resistors is 8-15 mm.
7. The dc voltage dividing terminal block according to claim 1 or 2, wherein: the box (1) has the dimensions of 90-100 mm in length, 20-30 mm in width and 35-45 mm in height.
8. The dc voltage dividing terminal block according to claim 1 or 2, wherein: the input terminal (2) and the output terminal (3) are marked with the signs of "+" and "-".
9. The dc voltage dividing terminal block according to claim 1 or 2, wherein: the bottom of the box (1) is provided with a plurality of heat dissipation holes.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921405037.7U CN211528468U (en) | 2019-08-27 | 2019-08-27 | Direct current voltage division terminal box |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921405037.7U CN211528468U (en) | 2019-08-27 | 2019-08-27 | Direct current voltage division terminal box |
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| Publication Number | Publication Date |
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| CN211528468U true CN211528468U (en) | 2020-09-18 |
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| CN201921405037.7U Active CN211528468U (en) | 2019-08-27 | 2019-08-27 | Direct current voltage division terminal box |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113514692A (en) * | 2021-07-16 | 2021-10-19 | 国网江苏省电力有限公司检修分公司 | Transformer substation secondary circuit node voltage monitoring device |
-
2019
- 2019-08-27 CN CN201921405037.7U patent/CN211528468U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113514692A (en) * | 2021-07-16 | 2021-10-19 | 国网江苏省电力有限公司检修分公司 | Transformer substation secondary circuit node voltage monitoring device |
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