CN214798523U - Intelligent insulation testing device for closed switch cabinet - Google Patents
Intelligent insulation testing device for closed switch cabinet Download PDFInfo
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- CN214798523U CN214798523U CN202120091799.5U CN202120091799U CN214798523U CN 214798523 U CN214798523 U CN 214798523U CN 202120091799 U CN202120091799 U CN 202120091799U CN 214798523 U CN214798523 U CN 214798523U
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Abstract
In order to guarantee the personal and equipment safety, improve and stop power transmission work efficiency, the utility model provides a closed cubical switchboard intelligence insulation test device. The device comprises an input module, an output module, a measuring module, a control module and a power supply module which are connected with each other; the handcart breaker and the closed switch cabinet can be tested without separating the handcart breaker from the closed switch cabinet, and the circuit breaker power transmission operation program is logically locked according to the measurement result, so that the personal safety and the equipment safety can be ensured, and the power transmission and power transmission working efficiency can be improved.
Description
Technical Field
The utility model belongs to intelligence observes and controls the field, in particular to closed cubical switchboard intelligence insulation test device.
Background
At present, in a power supply and distribution network with a nominal voltage of more than 6Kv and less than 35Kv, a withdrawable alternating-current metal-enclosed switchgear is widely adopted, and the switchgear is characterized in that: the handcart type switch has the advantages that the protection, measurement, metering and signal devices are installed on the fixed panel on the upper portion of the switch cabinet, equipment such as a circuit breaker and a voltage transformer are directly installed on a handcart on the middle lower portion of the switch cabinet, the handcart can be pushed in or moved out according to needs, and the handcart type switch improves interchangeability between switches compared with a fixed switch structure, so that a power supply and distribution system is more reliable.
According to the operation rule of the power system, after the circuit breaker is withdrawn from operation for more than 24 hours, the fracture and the ground insulation of the circuit breaker must be tested again before the circuit breaker is put into operation again, and the circuit breaker can be put into operation after the requirements are met. For a closed metal switch, under normal conditions, a breaker handcart needs to be completely drawn out for switch fracture insulation test and ground insulation test of a power supply loop, then an electricity testing rod is used for testing electricity of a part to be tested, finally a megohmmeter is used for insulation test, and recovery is carried out after the test is finished; during load end return circuit insulation test, often need pull out the circuit breaker handcart after, personnel get into the cubical switchboard in, manually pull open the contact closing plate and test, not only waste time and energy, still often can cause the personal and equipment incident because the testing personnel misoperation.
SUMMERY OF THE UTILITY MODEL
In order to guarantee the personal and equipment safety, improve and stop power transmission work efficiency, the utility model provides a closed cubical switchboard intelligence insulation test device.
The utility model discloses a closed cubical switchboard intelligence insulation test device's technical scheme as follows:
an intelligent insulation test device of a closed switch cabinet comprises an input module, an output module, a measuring module, a control module and a power supply module which are connected with each other;
the input module comprises a starting test switch signal end, a handcart test position switch signal end, a handcart working position switch signal end and a handcart closing switch signal end; and the starting test switch signal end is used for providing a starting and stopping signal for the intelligent insulation test device of the closed switch cabinet. When the signal end of the starting test switch receives a starting signal, the intelligent insulation test device of the closed switch cabinet starts to work, and when the signal end of the starting test switch receives a stopping signal, the intelligent insulation test device of the closed switch cabinet stops working. The signal end of the start test switch can be connected with a plurality of external switching values, and the external switching values can be connected in parallel or in series to realize different functions. If the remote switch and the field switch are connected in parallel and then connected to a signal end of the starting test switch, the function that when one switch is started, the intelligent insulation test device of the closed switch cabinet starts to work is realized. The starting test switch signal ends can be multiple, are respectively connected with different external switch values, and realize the switch function through the control module. The position of the handcart breaker relative to the closed switch cabinet can be divided into a test position, a working position and a disengagement position. When the handcart circuit breaker is connected with the closed switch cabinet and a first lead and a second lead of the handcart circuit breaker and a lead of the closed switch cabinet are in a disconnected state, the handcart circuit breaker and the closed switch cabinet are test positions; when the handcart circuit breaker is connected with the closed switch cabinet and a first lead and a second lead of the handcart circuit breaker are in a connected state with a lead of the closed switch cabinet, the handcart circuit breaker is in a working position; when the handcart breaker is separated from the closed switch cabinet, the handcart breaker is in a separation position. The handcart circuit breaker provides two position status signals, indicating the current position of the handcart circuit breaker. After the handcart test position switch signal end and the handcart working position switch signal end are respectively connected with two position state signals of the handcart circuit breaker, the closed switch cabinet intelligent insulation testing device can know the position information of the handcart circuit breaker, and therefore corresponding operation is executed. And the signal end of the handcart closing switch is connected with a state signal of an electric brake of the handcart breaker and used for judging the opening and closing state of the electric brake.
The output module comprises a closing switch control end; when the handcart circuit breaker is tested by the intelligent insulation testing device of the closed switch cabinet and meets the starting standard, the control end of the closing switch sends out a starting permission signal.
The measurement module is connected with the voltage detection unit and the insulation detection unit and used for acquiring data of the voltage detection unit and the insulation detection unit;
the power supply module is used for providing electric power for the intelligent insulation testing device of the closed switch cabinet;
the voltage detection unit is used for detecting the voltage between a first lead and a second lead of the handcart circuit breaker; the first lead and the second lead of the handcart circuit breaker can be a plurality of groups. When the first lead and the second lead of the handcart circuit breaker are in multiple groups, the voltage detection unit respectively detects the voltage between the first lead and the second lead of each group.
The insulation detection unit is used for detecting the insulation between the first lead and the second lead of the handcart circuit breaker and the insulation between the second lead and the ground. The first lead and the second lead of the handcart circuit breaker can be a plurality of groups. When the first lead and the second lead of the handcart circuit breaker are in multiple groups, the insulation detection unit respectively detects the insulation between the first lead and the second lead of each group and the insulation between the second lead of each group and the ground.
The utility model discloses a closed cubical switchboard intelligence insulation test device, input module, output module, measuring module, control module and power module can set up in closed cubical switchboard, and voltage detection unit, insulating detecting element can set up on the handcart circuit breaker.
During the use, at first detect handcart circuit breaker's insulating nature, including circuit breaker test position looks fracture insulation measurement, circuit breaker test position insulation measurement to ground relatively and circuit breaker operating position load circuit insulation measurement to ground.
During insulation measurement of a phase fracture at a circuit breaker test position, the requirements that a switch signal end of a handcart test position is 1, a switch signal end of a handcart working position is 0, a handcart closing switch signal end is 0, no voltage exists between a first lead and a second lead, and an insulation detection unit is located at the measurement position of the first lead and the second lead are met. And under the condition of meeting the conditions, setting the signal end of the starting test switch to be 1, and starting insulation measurement of the phase fracture at the test position of the circuit breaker by the control module.
When the test position of the circuit breaker is measured in a relatively insulating mode, the requirements that the switch signal end of the handcart test position is 1, the switch signal end of the handcart working position is 0, the switch signal end of the handcart closing switch is 0, no voltage exists between the first lead and the second lead, and the insulating detection unit is located at the measuring position of the second lead and the ground are met. And under the condition that the above conditions are met, setting a signal end of a starting test switch to be 1, and starting insulation measurement of the test position of the circuit breaker by the control module relatively.
When the load loop at the working position of the circuit breaker is subjected to ground insulation measurement, the requirements that the switch signal end at the handcart test position is 0, the switch signal end at the handcart working position is 1, the switch signal end at the handcart closing position is 0, no voltage exists between the first lead and the second lead, and the insulation detection unit is located at the measurement position of the second lead and the ground are met. And under the condition that the conditions are met, setting a signal end of a starting test switch to be 1, and starting the insulation measurement of a load loop of the working position of the circuit breaker to the ground by the control module.
And when all the 3 measurements are qualified and the signal end of the handcart closing switch is 0, the closing switch control end sends out a starting permission signal. And when the 3 measurements are unqualified or the signal end of the handcart closing switch is 1, the closing switch control end sends out a start-forbidding signal. A timer can be added in the 3 measurements, and when the measurement is not completed within a specified time period, the measurement is automatically ended, so that the problem of halt is prevented.
The utility model discloses a closed cubical switchboard intelligence insulation test device can accomplish the necessary test of dropping into the operation under the condition of not separating handcart circuit breaker and closed cubical switchboard, carries out logic shutting to circuit breaker power transmission operating procedure according to measuring result simultaneously, can guarantee personal and equipment safety, can improve again and stop power transmission work efficiency.
Furthermore, in order to ensure the safety and reliability of the intelligent insulation testing device of the closed switch cabinet, the input module further comprises a self-checking switch signal end; the control module comprises a self-checking module. When the self-checking switch signal end is set to be 1, the self-checking module is started to perform self-checking on the intelligent insulation testing device of the closed switch cabinet. When the insulation measurement of a phase fracture at a circuit breaker test position, the insulation measurement of a phase fracture at a circuit breaker test position relative to the ground and the insulation measurement of a load loop at a circuit breaker working position relative to the ground are carried out, the self-checking is required to be simultaneously satisfied and passed.
Furthermore, the intelligent insulation test device for the closed switch cabinet further comprises a timing module. The timing module is used for recording insulation measurement of a phase fracture at a latest circuit breaker test position, insulation measurement of a circuit breaker test position relative to the ground, and duration from the insulation measurement of a load loop at a circuit breaker working position to the current time. When judging whether the closing is allowed, the condition that the closing switch control end sends out the start-allowing signal also comprises that the time length cannot exceed the allowed time length. The condition that the control end of the closing switch sends out the start inhibiting signal also comprises or exceeds the allowed time length.
Furthermore, the voltage detection unit comprises an electric field strength detection sensor and a signal processor which are respectively arranged at the outer sides of the insulating layers outside the first lead and the second lead; each electric field strength detection sensor is connected with the signal processor.
The voltage detection unit can be installed on the handcart circuit breaker, and after the signal processor receives electric field strength signals measured by the electric field strength detection sensors, the signal processor can carry out vector correction and amplification processing on the electric field strength signals and finally send the electric field strength signals to the measurement module. The measuring module sends the data to the control module.
Furthermore, the intelligent insulation test device for the closed switch cabinet comprises an insulation detection unit, a measurement circuit and a selection switch, wherein the insulation detection unit comprises a first probe connected with a first lead, a second probe connected with a second lead, a third probe connected with the ground, the measurement circuit and the selection switch; the first probe is connected with the first contact of the selection switch; the third probe is connected with the second contact of the selection switch; the second probe is connected with one end of the measurement loop; the third contact of the selector switch is connected to the other end of the measuring circuit. The insulation detection unit can be mounted on the handcart circuit breaker, and can be switched between the first probe and the third probe through the selector switch to realize conversion of different measurement modes.
Furthermore, the intelligent insulation test device for the closed switch cabinet comprises an input module, an output module, a measuring module, a control module and a power supply module which are connected with each other through a back plugboard. The back-inserted structure is beneficial to maintenance of the intelligent insulation test device of the closed switch cabinet. When one of the input module, the output module, the measurement module, the control module and the power module breaks down, only the broken module needs to be replaced.
Further, the intelligent insulation test device for the closed switch cabinet specifically adopts a 32-bit singlechip and adopts C language as programming language.
Further, the intelligent insulation test device for the closed switch cabinet specifically further comprises a human-computer interface used for sending commands and displaying information.
Further, the intelligent insulation testing device for the closed switch cabinet specifically comprises a communication module, and all information of the intelligent insulation testing device for the closed switch cabinet is transmitted to the remote transmission system management machine through the communication module.
Furthermore, closed cubical switchboard intelligence insulation test device, in order to shield signal interference, input module, output module, measurement module, control module and power module set up in the almag shell.
Drawings
Fig. 1 is a schematic diagram of the intelligent insulation testing device for the closed switch cabinet of the present invention;
fig. 2 is the utility model discloses a closed cubical switchboard intelligence insulation test device's voltage detection unit, insulation detection unit's schematic diagram.
Detailed Description
The present invention will be described in further detail with reference to the following drawings and specific embodiments. The advantages and features of the present invention will become more fully apparent from the following description and appended claims. It should be noted that the drawings are in simplified form and are not to precise scale, and are provided for convenience and clarity in order to facilitate the description of the embodiments of the present invention.
Example (b):
referring to fig. 1 and 2, an intelligent insulation testing device for a closed switch cabinet comprises an input module 1, an output module 2, a measuring module 3, a control module 4 and a power module 5 which are connected with each other;
the input module 1 comprises a starting test switch signal end 11, a handcart test position switch signal end 12, a handcart working position switch signal end 13 and a handcart closing switch signal end 14; and the starting test switch signal terminal 11 is used for providing a starting and stopping signal for the intelligent insulation test device of the closed switch cabinet. When the start test switch signal terminal 11 receives a start signal, the intelligent insulation test device of the closed switch cabinet starts to work, and when the start test switch signal terminal 11 receives a stop signal, the intelligent insulation test device of the closed switch cabinet stops working. The start test switch signal terminal 11 may be connected to a plurality of external switching values, and the external switching values may be connected in parallel or in series to achieve different functions. If the remote switch and the field switch are connected in parallel and then connected to the signal end 11 of the starting test switch, the function that when one switch is started, the intelligent insulation test device of the closed switch cabinet starts to work is realized. The number of the start test switch signal terminals 11 may be multiple, and the start test switch signal terminals are respectively connected to different external switching values, and the switching function is realized through the control module 4. The position of the handcart breaker a relative to the enclosed switchgear cabinet can be divided into a test position, a working position, and a disengaged position. When the handcart circuit breaker a is connected with the closed switch cabinet and the first lead a1 and the second lead a2 of the handcart circuit breaker a are in a disconnected state with the leads of the closed switch cabinet, the handcart circuit breaker a is a test position; when the handcart circuit breaker a is connected with the closed switch cabinet and the first lead a1 and the second lead a2 of the handcart circuit breaker a are in a connected state with the leads of the closed switch cabinet, the handcart circuit breaker a is in a working position; when the handcart breaker a is separated from the closed switch cabinet, the handcart breaker a is in a separation position. The handcart circuit breaker a provides two position status signals, indicating the current position of the handcart circuit breaker a. After the handcart test position switch signal end 12 and the handcart working position switch signal end 13 are respectively connected with two position state signals of the handcart circuit breaker a, the intelligent insulation testing device of the closed switch cabinet can know the position information of the handcart circuit breaker a, and accordingly corresponding operation is executed. The handcart closing switch signal end 14 is connected with a state signal of a switch a3 of a handcart breaker a and used for judging the opening and closing state of a switch a 3.
The output module 2 comprises a closing switch control end 21; when the handcart circuit breaker a is tested by the intelligent insulation testing device of the closed switch cabinet and meets the starting standard, the closing switch control end 21 sends out a starting permission signal.
The measurement module 3 is connected with the voltage detection unit 6 and the insulation detection unit 7 and is used for acquiring data of the voltage detection unit 6 and the insulation detection unit 7;
the power supply module 5 is used for providing electric power for the intelligent insulation testing device of the closed switch cabinet;
the voltage detection unit 6 is used for detecting the voltage between the first lead a1 and the second lead a2 of the handcart circuit breaker a; the first lead a1 and the second lead a2 of the handcart circuit breaker a can be in multiple groups. When the first lead a1 and the second lead a2 of the handcart circuit breaker a are multiple sets, the voltage detection unit 6 respectively detects the voltage between the first lead a1 and the second lead a2 of each set.
The insulation detection unit 7 is configured to detect insulation between the first lead a1 and the second lead a2 of the handcart circuit breaker a, and insulation between the second lead a2 and the ground. The first lead a1 and the second lead a2 of the handcart circuit breaker a can be in multiple groups. When the first lead a1 and the second lead a2 of the handcart circuit breaker a are multiple sets, the insulation detection unit 7 detects the insulation between each set of the first lead a1 and the second lead a2 and the insulation between each set of the second lead a2 and the ground.
The intelligent insulation testing device for the closed switch cabinet comprises an input module 1, an output module 2, a measuring module 3, a control module 4 and a power module 5, wherein the input module, the output module, the measuring module 3, the control module 4 and the power module 5 can be arranged in the closed switch cabinet, and a voltage detection unit 6 and an insulation detection unit 7 can be arranged on a handcart circuit breaker a.
During the use, at first detect handcart circuit breaker a's insulating nature, including circuit breaker test position looks fracture insulation measurement, circuit breaker test position insulation measurement to ground relatively and circuit breaker operating position load circuit insulation measurement to ground.
During insulation measurement of a phase fracture at a test position of the circuit breaker, it needs to be satisfied that a switch signal end 12 at a test position of the handcart is 1, a switch signal end 13 at a working position of the handcart is 0, a switch signal end 14 at a closing position of the handcart is 0, no voltage exists between the first lead a1 and the second lead a2, and the insulation detection unit 7 is located at a measurement position of the first lead a1 and the second lead a 2. Under the condition that the above conditions are met, the signal terminal 11 of the starting test switch is set to be 1, and then the control module 4 starts insulation measurement of the phase fracture at the test position of the circuit breaker.
When the test position of the circuit breaker is measured in a relatively ground insulation manner, it needs to be satisfied that the handcart test position switch signal end 12 is 1, the handcart working position switch signal end 13 is 0, the handcart closing switch signal end 14 is 0, no voltage exists between the first lead a1 and the second lead a2, and the insulation detection unit 7 is located at the measurement position of the second lead a2 and the ground. If the above conditions are met, the start test switch signal terminal 11 is set to 1, and the control module 4 starts insulation measurement of the circuit breaker test position relatively.
When the circuit breaker working position load loop is subjected to ground insulation measurement, it needs to be satisfied that the handcart test position switch signal end 12 is 0, the handcart working position switch signal end 13 is 1, the handcart closing switch signal end 14 is 0, no voltage exists between the first lead a1 and the second lead a2, and the insulation detection unit 7 is located at the measurement position of the second lead a2 and the ground. When the above conditions are met, the signal terminal 11 of the starting test switch is set to 1, and the control module 4 starts the insulation measurement of the load loop to the ground at the working position of the circuit breaker.
When all the 3 measurements are qualified and the handcart closing switch signal end 14 is 0, the closing switch control end 21 sends out an allowable starting signal. When the above 3 measurements are unqualified or the handcart closing switch signal end 14 is 1, the closing switch control end 21 sends out a start-forbidding signal. A timer can be added in the 3 measurements, and when the measurement is not completed within a specified time period, the measurement is automatically ended, so that the problem of halt is prevented.
The intelligent insulation testing device for the closed switch cabinet can complete necessary tests for operation without separating the handcart circuit breaker a from the closed switch cabinet, and can carry out logic locking on a circuit breaker power transmission operation program according to a measurement result, so that personal and equipment safety can be guaranteed, and the power transmission and power transmission working efficiency can be improved.
In a preferred embodiment, in order to ensure the safety and reliability of the intelligent insulation test device for the closed switch cabinet, the input module 1 further includes a self-checking switch signal terminal 15; the control module 4 includes a self-test module 41. When the self-checking switch signal terminal 15 is set to 1, the self-checking module 41 is started to perform self-checking on the intelligent insulation testing device of the closed switch cabinet. When the insulation measurement of a phase fracture at a circuit breaker test position, the insulation measurement of a phase fracture at a circuit breaker test position relative to the ground and the insulation measurement of a load loop at a circuit breaker working position relative to the ground are carried out, the self-checking is required to be simultaneously satisfied and passed.
In a preferred embodiment, the control module 4 further includes a timing module 42. The timing module 42 is used for recording the insulation measurement of the phase fracture at the latest test position of the circuit breaker, the insulation measurement of the phase ground at the test position of the circuit breaker, and the time length from the insulation measurement of the load loop to the ground at the working position of the circuit breaker to the current time. When determining whether to allow closing, the condition that the closing switch control end 21 sends out the start-allowing signal also includes that the time length cannot exceed the allowed time length. The condition that the closing switch control terminal 21 sends out the start prohibiting signal further includes, or the duration exceeds the allowable duration.
In a preferred embodiment, the intelligent insulation testing device for the closed switch cabinet comprises a voltage detection unit 6, a signal processor 62, and an electric field intensity detection sensor 61, which are respectively arranged outside an insulation layer a4 outside a first lead a1 and a second lead a 2; each electric field strength detection sensor 61 is connected to the signal processor 62.
The voltage detection unit 6 can be installed on the handcart breaker a, and after receiving the electric field strength signals measured by the electric field strength detection sensors 61, the signal processor 62 performs vector correction and amplification processing on the electric field strength signals and finally sends the electric field strength signals to the measurement module 3. The measurement module 3 sends the data to the control module 4.
In a preferred embodiment, the intelligent insulation testing device for the closed switch cabinet comprises an insulation detection unit 7, a first probe 71 connected with a first lead a1, a second probe 72 connected with a second lead a2, a third probe 73 connected with the ground, a measurement circuit 74 and a selection switch 75; the first probe 71 is connected to the first contact 751 of the selection switch 75; the third probe 73 is connected to the second contact 752 of the selection switch 75; the second probe 72 is connected to one end of a measurement loop 74; the third contact 753 of the selector switch 75 is connected to the other end of the measuring circuit 74.
The insulation detection unit 7 can be installed on the handcart circuit breaker a, and the insulation detection unit 7 can be switched between the first probe 71 and the third probe 73 through the selection switch 75 to realize the conversion of different measurement modes.
In a preferred embodiment, the input module 1, the output module 2, the measurement module 3, the control module 4, and the power module 5 are connected to each other through a backplane. The back-inserted structure is beneficial to maintenance of the intelligent insulation test device of the closed switch cabinet. When one of the input module 1, the output module 2, the measurement module 3, the control module 4 and the power module 5 fails, only the failed module needs to be replaced.
As a preferred embodiment, the intelligent insulation testing device for the closed switch cabinet specifically adopts a 32-bit single chip microcomputer and adopts C language as programming language for the control module 4.
As a preferred embodiment, the intelligent insulation testing device for the closed switch cabinet further comprises a human-computer interface 8 for sending commands and displaying information.
As a preferred embodiment, the intelligent insulation testing device for the closed switch cabinet specifically further comprises a communication module 9, and each piece of information of the intelligent insulation testing device for the closed switch cabinet is transmitted to the remote transmission system management machine b through the communication module 9.
In a preferred embodiment, in order to shield signal interference, the input module 1, the output module 2, the measurement module 3, the control module 4, and the power module 5 are disposed in an aluminum-magnesium alloy housing.
The above description is only for the preferred embodiment of the present invention and is not intended to limit the scope of the present invention, and any modification and modification made by those skilled in the art according to the above disclosure are all within the scope of the claims.
Claims (9)
1. An intelligent insulation testing device of a closed switch cabinet is characterized by comprising an input module (1), an output module (2), a measuring module (3), a control module (4) and a power supply module (5) which are connected with each other;
the input module (1) comprises a starting test switch signal end (11), a handcart test position switch signal end (12), a handcart working position switch signal end (13) and a handcart closing switch signal end (14);
the output module (2) comprises a closing switch control end (21);
the measurement module (3) is connected with the voltage detection unit (6) and the insulation detection unit (7) and is used for acquiring data of the voltage detection unit (6) and the insulation detection unit (7);
the power supply module (5) is used for providing electric power for the intelligent insulation testing device of the closed switch cabinet;
the voltage detection unit (6) is used for detecting the voltage between the first lead (a1) and the second lead (a2) of the handcart circuit breaker (a);
the insulation detection unit (7) is used for detecting the insulation between the first lead (a1) and the second lead (a2) of the handcart circuit breaker (a) and the insulation between the second lead (a2) and the ground;
the handcart switch cabinet comprises an input module (1), an output module (2), a measuring module (3), a control module (4) and a power module (5), wherein the input module, the output module, the measuring module, the control module and the power module are arranged in the closed switch cabinet, and a voltage detection unit (6) and an insulation detection unit (7) are arranged on a handcart circuit breaker (a).
2. The intelligent insulation test device of the closed switch cabinet as claimed in claim 1, wherein the input module (1) further comprises a self-checking switch signal terminal (15); the control module (4) comprises a self-test module (41).
3. The intelligent insulation test device of a closed switch cabinet according to claim 1, characterized in that the control module (4) further comprises a timing module (42).
4. The intelligent insulation test device of the closed switch cabinet as claimed in claim 1, wherein the voltage detection unit (6) comprises an electric field strength detection sensor (61) and a signal processor (62) respectively arranged at the outer sides of the insulation layers (a4) outside the first lead (a1) and the second lead (a 2); each electric field strength detection sensor (61) is connected to a signal processor (62).
5. The intelligent insulation test device of the closed switch cabinet as claimed in claim 1, wherein the insulation detection unit (7) comprises a first probe (71) connected with a first lead (a1), a second probe (72) connected with a second lead (a2), a third probe (73) connected with the ground, a measurement loop (74), and a selection switch (75); the first probe (71) is connected with a first contact (751) of the selection switch (75); the third probe (73) is connected with the second contact (752) of the selection switch (75); the second probe (72) is connected with one end of the measuring loop (74); the third contact (753) of the selector switch (75) is connected to the other end of the measuring circuit (74).
6. The intelligent insulation test device of the closed switch cabinet as claimed in claim 1, wherein the input module (1), the output module (2), the measurement module (3), the control module (4) and the power supply module (5) are connected with each other through a back panel.
7. The intelligent insulation test device of the closed switch cabinet as recited in claim 1, further comprising a human-machine interface (8) for sending commands and displaying information.
8. The intelligent insulation testing device of the closed switch cabinet as claimed in claim 1, further comprising a communication module (9), wherein the information of the intelligent insulation testing device of the closed switch cabinet is transmitted to the remote transmission system manager (b) through the communication module (9).
9. The intelligent insulation test device of the closed switch cabinet according to claim 1, wherein the input module (1), the output module (2), the measurement module (3), the control module (4) and the power supply module (5) are arranged in an aluminum-magnesium alloy shell.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120091799.5U CN214798523U (en) | 2021-01-14 | 2021-01-14 | Intelligent insulation testing device for closed switch cabinet |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120091799.5U CN214798523U (en) | 2021-01-14 | 2021-01-14 | Intelligent insulation testing device for closed switch cabinet |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN214798523U true CN214798523U (en) | 2021-11-19 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202120091799.5U Active CN214798523U (en) | 2021-01-14 | 2021-01-14 | Intelligent insulation testing device for closed switch cabinet |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN214798523U (en) |
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2021
- 2021-01-14 CN CN202120091799.5U patent/CN214798523U/en active Active
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