CN112305364A - Multifunctional wire selecting device for transformer test - Google Patents
Multifunctional wire selecting device for transformer test Download PDFInfo
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- CN112305364A CN112305364A CN202011311622.8A CN202011311622A CN112305364A CN 112305364 A CN112305364 A CN 112305364A CN 202011311622 A CN202011311622 A CN 202011311622A CN 112305364 A CN112305364 A CN 112305364A
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- 238000012360 testing method Methods 0.000 title claims abstract description 111
- 238000009413 insulation Methods 0.000 claims abstract description 34
- 238000005259 measurement Methods 0.000 claims abstract description 13
- 229920001342 Bakelite® Polymers 0.000 claims abstract description 12
- 239000004637 bakelite Substances 0.000 claims abstract description 12
- 229920003023 plastic Polymers 0.000 claims abstract description 10
- KXGFMDJXCMQABM-UHFFFAOYSA-N 2-methoxy-6-methylphenol Chemical compound [CH]OC1=CC=CC([CH])=C1O KXGFMDJXCMQABM-UHFFFAOYSA-N 0.000 claims abstract description 6
- 229920001568 phenolic resin Polymers 0.000 claims abstract description 6
- 239000005011 phenolic resin Substances 0.000 claims abstract description 6
- 239000000088 plastic resin Substances 0.000 claims abstract description 6
- 230000009466 transformation Effects 0.000 claims description 27
- 238000004804 winding Methods 0.000 claims description 9
- 238000009434 installation Methods 0.000 claims description 5
- 239000000758 substrate Substances 0.000 claims description 5
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims description 4
- 229910052802 copper Inorganic materials 0.000 claims description 4
- 239000010949 copper Substances 0.000 claims description 4
- 239000004033 plastic Substances 0.000 claims description 4
- 238000000034 method Methods 0.000 abstract description 3
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- 230000008439 repair process Effects 0.000 description 1
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R31/00—Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
- G01R31/003—Environmental or reliability tests
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R1/00—Details of instruments or arrangements of the types included in groups G01R5/00 - G01R13/00 and G01R31/00
- G01R1/02—General constructional details
- G01R1/04—Housings; Supporting members; Arrangements of terminals
- G01R1/0408—Test fixtures or contact fields; Connectors or connecting adaptors; Test clips; Test sockets
- G01R1/0416—Connectors, terminals
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R27/00—Arrangements for measuring resistance, reactance, impedance, or electric characteristics derived therefrom
- G01R27/02—Measuring real or complex resistance, reactance, impedance, or other two-pole characteristics derived therefrom, e.g. time constant
- G01R27/26—Measuring inductance or capacitance; Measuring quality factor, e.g. by using the resonance method; Measuring loss factor; Measuring dielectric constants ; Measuring impedance or related variables
- G01R27/2688—Measuring quality factor or dielectric loss, e.g. loss angle, or power factor
- G01R27/2694—Measuring dielectric loss, e.g. loss angle, loss factor or power factor
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R29/00—Arrangements for measuring or indicating electric quantities not covered by groups G01R19/00 - G01R27/00
- G01R29/20—Measuring number of turns; Measuring transformation ratio or coupling factor of windings
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R31/00—Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
- G01R31/12—Testing dielectric strength or breakdown voltage ; Testing or monitoring effectiveness or level of insulation, e.g. of a cable or of an apparatus, for example using partial discharge measurements; Electrostatic testing
- G01R31/1227—Testing dielectric strength or breakdown voltage ; Testing or monitoring effectiveness or level of insulation, e.g. of a cable or of an apparatus, for example using partial discharge measurements; Electrostatic testing of components, parts or materials
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R31/00—Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
- G01R31/50—Testing of electric apparatus, lines, cables or components for short-circuits, continuity, leakage current or incorrect line connections
- G01R31/52—Testing for short-circuits, leakage current or ground faults
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- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Environmental & Geological Engineering (AREA)
- Testing Electric Properties And Detecting Electric Faults (AREA)
- Testing Of Short-Circuits, Discontinuities, Leakage, Or Incorrect Line Connections (AREA)
Abstract
A multifunctional wire selection device for a transformer test comprises 1 insulating bottom plate, 1 device main box body, 8 wiring terminals from the transformer, 1 4P double throw disconnecting link, 1 4P short circuit disconnecting link, 7 indicator lamps in two rows, 1 power panel and 1 single chip microcomputer control module; the insulation board is of a cuboid structure, is made of plastic or phenolic resin and bakelite, can resist 40kV direct current high voltage, and can meet the requirement of insulation resistance measurement; the device comprises a device box body and a cuboid structure, wherein a bottom plate is an insulating part, the other 5 plates are insulating bakelite parts, and a hole-formed assembling part is a carrier of a device frame structure, each electrical element and each circuit board; the internal space of the box body can be used for storing common wires, and each door of the box body is connected to the box body through a hinge. The invention has the advantages that: the operation is simple, the working procedures can be reduced, the time is saved, and the working efficiency is improved. Through sharing the test channel, the time-sharing route selection is connected with each instrument, the electrical contact frequency is reduced, and the operation efficiency and safety are improved.
Description
Technical Field
The invention relates to the field of power equipment, in particular to a multifunctional line selection device for a transformer test.
Background
Transformers are important equipment in power systems and require necessary testing to confirm their quality before commissioning, their health during service and after major repairs. Different test lines are generally required to be replaced according to different test items, the transformer and the test instrument are closely matched by personnel, and the efficiency is not high and certain safety risks exist.
Disclosure of Invention
The invention aims to solve the problems that during transformer test, the transformer and each instrument perform repeated wire disconnection, wire changing, wire releasing, wire taking and wire taking repeatedly, the efficiency is low, the number of wires is large, the electrical contact is frequent, and the safety risk is high. Through the application of the device, the transformer is connected to the device for one-time wiring sharing, and the device is connected to each instrument for one-time wiring, so that repeated connection and disconnection and wire changing of the transformer side are reduced, the operation efficiency is improved, the frequency and risk of electrical contact are reduced, and the operation safety is improved. The invention provides a multifunctional wire selection device for a transformer test.
The invention provides a multifunctional wire selection device for a transformer test, which is characterized in that: the multifunctional line selection device for the transformer test comprises 1 insulation base plate, 1 device main box body, 8 wiring terminals to a transformer, 4 wiring terminals to a direct current resistance tester, 4 wiring terminals to a transformation ratio tester, 4 current terminals to a no-load test, 2 micro-button switches, 4 three-gear ship-shaped switches, 1 4P double throw disconnecting link, 1 4P short circuit disconnecting link, 7 indicator lamps in two rows, 1 power supply plate, 1 single chip microcomputer control module, 8 solid-state relays and 1 circuit board substrate; the insulation board is of a cuboid structure, is made of plastic or phenolic resin and bakelite, can resist 40kV direct current high voltage, has the leakage current of less than 10 muA, the normal temperature of less than 40 ℃ and the humidity of less than 80 percent, has the insulation resistance of more than 20G omega, and can meet the measurement requirement of the insulation resistance; the device comprises a device box body and a cuboid structure, wherein a bottom plate is an insulating part, the other 5 plates are insulating bakelite parts, and a hole-formed assembling part is a carrier of a device frame structure, each electrical element and each circuit board; the internal space of the box body can be used for storing common wires, and each door of the box body is connected to the box body through a hinge.
The mechanical rotary door lock is used for effectively closing each door of the box body and manually unlocking the structure; the stay bar is of a telescopic rod structure and is used for opening each door and enabling the main panel to be horizontal.
To the binding post of transformer, the foraminiferous terminal of 50A is selected for use to the current terminal, and the inserted sheet of being convenient for compresses tightly to be connected or the plug is connected the selection, and yellow green red black four-color is distinguished, accords with the electrical requirement, and the foraminiferous terminal of 5A is selected for use to the voltage terminal, other with the current terminal.
Connecting terminal of DC resistance tester: selecting a red-black structure, and connecting other terminals to the transformer; the connecting terminal of the transformation ratio tester is selected from the same voltage terminal and used for testing transformation ratio items and no-load items
The current wiring terminal for the no-load test, the same current terminal and the wiring terminal to the transformation ratio tester are jointly used for the no-load test and the loss measurement through the mutual inductor.
2.5mm of AC voltage-resistant short-circuit line2And the copper conducting wires are used for short-circuiting all current terminals after passing through the disconnecting link and connecting the current terminals with the high-voltage end of a test transformer or other alternating-current voltage withstand devices.
The three-gear ship-shaped switch adopts a 10A black plastic shell piece and is used for switching a direct resistance side and a transformation ratio side of a voltage terminal; 4P double throw disconnecting link: a 63A 690V 4-pole double-throw switch is adopted and used for switching a no-load test side and a direct resistance side of a current terminal; 4P short circuit knife switch: a4-pole single-throw common knife switch of 10A 380 is adopted, and a transformer winding for alternating current voltage resistance is short-circuited through a terminal.
And the micro button switch is used for circularly selecting different channels to communicate the transformer winding terminal and the direct-current resistance tester terminal, and the circuit can be switched by clicking the button after wiring is realized.
The indicator lamp adopts a high-brightness red LED lamp, so that gated channel identification is facilitated under strong light or in different occasions of dark environments; and the solid-state relay selects 40A 250V, is controlled by the single-chip microcomputer control module, and is connected with different required channels according to program setting.
The singlechip control module is used for setting a program and controlling the solid-state relay; a circuit board: providing an installation carrier and a wiring space for the control module, the solid-state relay and the power supply module; a power supply module: the power supply required by the singlechip control module and the control coil of the solid-state relay is provided; threading holes: the device is used for directly connecting the common wiring to each wiring terminal, the device side is not detached, and the device can be rapidly stored after being used; and the alternating current 220V power line is used for providing an alternating current power supply for the power supply module.
The operator makes the terminal of the transformer on the complete equipment pass through proper test line according to the phase color, specially makes the same type or proper direct resistance test line, and connects with the corresponding terminal of the tested transformer; the operator can reliably connect each terminal corresponding to the device with each instrument through a proper test line according to different test items required; the transformation ratio and no-load multiplex voltage terminals, which cannot be connected to 2 instruments simultaneously. In addition, the insulation resistance and alternating current withstand voltage test voltage are high and dangerous, and the device cannot be connected with other instruments at the same time; the operator closes each switch and the knife switch to the required position; one of the instruments was powered on and measurements of different test items were started. Note that: when measuring the direct current resistance, an alternating current 220V power line of the device needs to be plugged into a power strip/socket for connection; after a certain test item is finished, the power supply of the instrument is disconnected; operating the switches and the disconnecting link to the required position and switching to another instrument; the newly switched instrument is connected with a power supply, and the test of a new test item can be carried out; repeating the third step to the fifth step until all the test items which can be carried out by the device are completed; alternating current withstand voltage, direct current leakage current and conventional dielectric loss test items generally need to carry out insulating support on the device and a connection test line between the device and a transformer. The insulation resistor needs to perform insulation support on a connection test line between the device and the transformer, and the device can be subjected to insulation support together when necessary; and (4) dismantling the transformer side and the instrument side of each test connecting line, and dismantling the device side of each test connecting line or accommodating the device side into the device box through a threading hole/a rotating door lock according to actual conditions.
The invention has the advantages that: according to the multifunctional wire selecting device for the transformer test, the connecting wire test channel from the device to the transformer is reused, so that the wire changing, disconnecting, taking up and paying off operations on the transformer side are greatly reduced; the switch, the disconnecting link and the button of the device are controlled to be simply operated, so that the operation of changing the wires at the instrument side of an operator is reduced; the device can reduce the using amount of wires matched with each instrument, reduce the weight and save the space; the wiring is clear, the operation is simple, the working procedures can be reduced, the time is saved, and the working efficiency is improved. The operation mode that each instrument is provided with a set of special test wires, and the respective special test channels are applied to repeatedly change the wiring and disconnecting on the transformer terminal in the traditional transformer test is changed. Through sharing the test channel, the time-sharing line selection is communicated with each instrument, the electrical contact frequency is reduced, the working procedures are optimized, the operation is reduced, the wire rods are saved, and the operation efficiency and safety are improved.
Drawings
The invention is described in further detail below with reference to the following figures and embodiments:
FIG. 1 is an expanded view of a multifunctional wire selecting device for a transformer test;
FIG. 2 is a schematic bottom view of the multifunctional line selection device for transformer testing;
FIG. 3 is a schematic view of the support of the multifunctional line selection device for the transformer test on the operation site;
FIG. 4 is a schematic view of the multifunctional line selection device for transformer testing directly fixed on a high-voltage bushing of a testing transformer in an operation site;
FIG. 5 is a single wire schematic;
in the figure, 1 insulating board, 2 device boxes, 3 hinges, 4 mechanical revolving door locks, 5 support rods, 6 connecting terminals to a transformer, 7 connecting terminals to a direct current resistance tester, 8 connecting terminals to a transformation ratio tester, 9 current connecting terminals for no-load tests, 10 alternating current voltage-resistant short-circuit lines, 11 three-gear ship-shaped switches, 124P double throw disconnecting link, 134P short-circuit disconnecting link, 14 micro-button switches, 15 indicator lamps, 16 solid state relays, 17 single chip microcomputer control modules, 18 circuit boards, 19 power supply modules and 20 threading holes.
Detailed Description
Example 1
The invention provides a multifunctional wire selection device for a transformer test, which is characterized in that: the multifunctional line selection device for the transformer test comprises 1 insulation base plate, 1 device main box body, 8 wiring terminals to a transformer, 4 wiring terminals to a direct current resistance tester, 4 wiring terminals to a transformation ratio tester, 4 current terminals to a no-load test, 2 micro-button switches, 4 three-gear ship-shaped switches, 1 4P double throw disconnecting link, 1 4P short circuit disconnecting link, 7 indicator lamps in two rows, 1 power supply plate, 1 single chip microcomputer control module, 8 solid-state relays and 1 circuit board substrate; the insulation board is of a cuboid structure, is made of plastic or phenolic resin and bakelite, can resist 40kV direct current high voltage, has the leakage current of less than 10 muA, the normal temperature of less than 40 ℃ and the humidity of less than 80 percent, has the insulation resistance of more than 20G omega, and can meet the measurement requirement of the insulation resistance; the device comprises a device box body and a cuboid structure, wherein a bottom plate is an insulating part, the other 5 plates are insulating bakelite parts, and a hole-formed assembling part is a carrier of a device frame structure, each electrical element and each circuit board; the internal space of the box body can be used for storing common wires, and each door of the box body is connected to the box body through a hinge.
The mechanical rotary door lock is used for effectively closing each door of the box body and manually unlocking the structure; the stay bar is of a telescopic rod structure and is used for opening each door and enabling the main panel to be horizontal.
To the binding post of transformer, the foraminiferous terminal of 50A is selected for use to the current terminal, and the inserted sheet of being convenient for compresses tightly to be connected or the plug is connected the selection, and yellow green red black four-color is distinguished, accords with the electrical requirement, and the foraminiferous terminal of 5A is selected for use to the voltage terminal, other with the current terminal.
Connecting terminal of DC resistance tester: selecting a red-black structure, and connecting other terminals to the transformer; the connecting terminal of the transformation ratio tester is selected from the same voltage terminal and used for testing transformation ratio items and no-load items
The current wiring terminal for the no-load test, the same current terminal and the wiring terminal to the transformation ratio tester are jointly used for the no-load test and the loss measurement through the mutual inductor.
2.5mm of AC voltage-resistant short-circuit line2And the copper conducting wires are used for short-circuiting all current terminals after passing through the disconnecting link and connecting the current terminals with the high-voltage end of a test transformer or other alternating-current voltage withstand devices.
The three-gear ship-shaped switch adopts a 10A black plastic shell piece and is used for switching a direct resistance side and a transformation ratio side of a voltage terminal; 4P double throw disconnecting link: a 63A 690V 4-pole double-throw switch is adopted and used for switching a no-load test side and a direct resistance side of a current terminal; 4P short circuit knife switch: a4-pole single-throw common knife switch of 10A 380 is adopted, and a transformer winding for alternating current voltage resistance is short-circuited through a terminal.
And the micro button switch is used for circularly selecting different channels to communicate the transformer winding terminal and the direct-current resistance tester terminal, and the circuit can be switched by clicking the button after wiring is realized.
The indicator lamp adopts a high-brightness red LED lamp, so that gated channel identification is facilitated under strong light or in different occasions of dark environments; and the solid-state relay selects 40A 250V, is controlled by the single-chip microcomputer control module, and is connected with different required channels according to program setting.
The singlechip control module is used for setting a program and controlling the solid-state relay; a circuit board: providing an installation carrier and a wiring space for the control module, the solid-state relay and the power supply module; a power supply module: the power supply required by the singlechip control module and the control coil of the solid-state relay is provided; threading holes: the device is used for directly connecting the common wiring to each wiring terminal, the device side is not detached, and the device can be rapidly stored after being used; and the alternating current 220V power line is used for providing an alternating current power supply for the power supply module.
The operator makes the terminal of the transformer on the complete equipment pass through proper test line according to the phase color, specially makes the same type or proper direct resistance test line, and connects with the corresponding terminal of the tested transformer; the operator can reliably connect each terminal corresponding to the device with each instrument through a proper test line according to different test items required; the transformation ratio and no-load multiplex voltage terminals, which cannot be connected to 2 instruments simultaneously. In addition, the insulation resistance and alternating current withstand voltage test voltage are high and dangerous, and the device cannot be connected with other instruments at the same time; the operator closes each switch and the knife switch to the required position; one of the instruments was powered on and measurements of different test items were started. Note that: when measuring the direct current resistance, an alternating current 220V power line of the device needs to be plugged into a power strip/socket for connection; after a certain test item is finished, the power supply of the instrument is disconnected; operating the switches and the disconnecting link to the required position and switching to another instrument; the newly switched instrument is connected with a power supply, and the test of a new test item can be carried out; repeating the third step to the fifth step until all the test items which can be carried out by the device are completed; alternating current withstand voltage, direct current leakage current and conventional dielectric loss test items generally need to carry out insulating support on the device and a connection test line between the device and a transformer. The insulation resistor needs to perform insulation support on a connection test line between the device and the transformer, and the device can be subjected to insulation support together when necessary; and (4) dismantling the transformer side and the instrument side of each test connecting line, and dismantling the device side of each test connecting line or accommodating the device side into the device box through a threading hole/a rotating door lock according to actual conditions.
Example 2
The invention provides a multifunctional wire selection device for a transformer test, which is characterized in that: the multifunctional line selection device for the transformer test comprises 1 insulation base plate, 1 device main box body, 8 wiring terminals to a transformer, 4 wiring terminals to a direct current resistance tester, 4 wiring terminals to a transformation ratio tester, 4 current terminals to a no-load test, 2 micro-button switches, 4 three-gear ship-shaped switches, 1 4P double throw disconnecting link, 1 4P short circuit disconnecting link, 7 indicator lamps in two rows, 1 power supply plate, 1 single chip microcomputer control module, 8 solid-state relays and 1 circuit board substrate; the insulation board is of a cuboid structure, is made of plastic or phenolic resin and bakelite, can resist 40kV direct current high voltage, has the leakage current of less than 10 muA, the normal temperature of less than 40 ℃ and the humidity of less than 80 percent, has the insulation resistance of more than 20G omega, and can meet the measurement requirement of the insulation resistance; the device comprises a device box body and a cuboid structure, wherein a bottom plate is an insulating part, the other 5 plates are insulating bakelite parts, and a hole-formed assembling part is a carrier of a device frame structure, each electrical element and each circuit board; the internal space of the box body can be used for storing common wires, and each door of the box body is connected to the box body through a hinge.
The mechanical rotary door lock is used for effectively closing each door of the box body and manually unlocking the structure; the stay bar is of a telescopic rod structure and is used for opening each door and enabling the main panel to be horizontal.
To the binding post of transformer, the foraminiferous terminal of 50A is selected for use to the current terminal, and the inserted sheet of being convenient for compresses tightly to be connected or the plug is connected the selection, and yellow green red black four-color is distinguished, accords with the electrical requirement, and the foraminiferous terminal of 5A is selected for use to the voltage terminal, other with the current terminal.
Connecting terminal of DC resistance tester: selecting a red-black structure, and connecting other terminals to the transformer; the connecting terminal of the transformation ratio tester is selected from the same voltage terminal and used for testing transformation ratio items and no-load items
The current wiring terminal for the no-load test, the same current terminal and the wiring terminal to the transformation ratio tester are jointly used for the no-load test and the loss measurement through the mutual inductor.
2.5mm of AC voltage-resistant short-circuit line2And the copper conducting wires are used for short-circuiting all current terminals after passing through the disconnecting link and connecting the current terminals with the high-voltage end of a test transformer or other alternating-current voltage withstand devices.
The three-gear ship-shaped switch adopts a 10A black plastic shell piece and is used for switching a direct resistance side and a transformation ratio side of a voltage terminal; 4P double throw disconnecting link: a 63A 690V 4-pole double-throw switch is adopted and used for switching a no-load test side and a direct resistance side of a current terminal; 4P short circuit knife switch: a4-pole single-throw common knife switch of 10A 380 is adopted, and a transformer winding for alternating current voltage resistance is short-circuited through a terminal.
And the micro button switch is used for circularly selecting different channels to communicate the transformer winding terminal and the direct-current resistance tester terminal, and the circuit can be switched by clicking the button after wiring is realized.
The singlechip control module is used for setting a program and controlling the solid-state relay; a circuit board: providing an installation carrier and a wiring space for the control module, the solid-state relay and the power supply module; a power supply module: the power supply required by the singlechip control module and the control coil of the solid-state relay is provided; threading holes: the device is used for directly connecting the common wiring to each wiring terminal, the device side is not detached, and the device can be rapidly stored after being used; and the alternating current 220V power line is used for providing an alternating current power supply for the power supply module.
The operator makes the terminal of the transformer on the complete equipment pass through proper test line according to the phase color, specially makes the same type or proper direct resistance test line, and connects with the corresponding terminal of the tested transformer; the operator can reliably connect each terminal corresponding to the device with each instrument through a proper test line according to different test items required; the transformation ratio and no-load multiplex voltage terminals, which cannot be connected to 2 instruments simultaneously. In addition, the insulation resistance and alternating current withstand voltage test voltage are high and dangerous, and the device cannot be connected with other instruments at the same time; the operator closes each switch and the knife switch to the required position; one of the instruments was powered on and measurements of different test items were started. Note that: when measuring the direct current resistance, an alternating current 220V power line of the device needs to be plugged into a power strip/socket for connection; after a certain test item is finished, the power supply of the instrument is disconnected; operating the switches and the disconnecting link to the required position and switching to another instrument; the newly switched instrument is connected with a power supply, and the test of a new test item can be carried out; repeating the third step to the fifth step until all the test items which can be carried out by the device are completed; alternating current withstand voltage, direct current leakage current and conventional dielectric loss test items generally need to carry out insulating support on the device and a connection test line between the device and a transformer. The insulation resistor needs to perform insulation support on a connection test line between the device and the transformer, and the device can be subjected to insulation support together when necessary; and (4) dismantling the transformer side and the instrument side of each test connecting line, and dismantling the device side of each test connecting line or accommodating the device side into the device box through a threading hole/a rotating door lock according to actual conditions.
Example 3
The invention provides a multifunctional wire selection device for a transformer test, which is characterized in that: the multifunctional line selection device for the transformer test comprises 1 insulation base plate, 1 device main box body, 8 wiring terminals to a transformer, 4 wiring terminals to a direct current resistance tester, 4 wiring terminals to a transformation ratio tester, 4 current terminals to a no-load test, 2 micro-button switches, 4 three-gear ship-shaped switches, 1 4P double throw disconnecting link, 1 4P short circuit disconnecting link, 7 indicator lamps in two rows, 1 power supply plate, 1 single chip microcomputer control module, 8 solid-state relays and 1 circuit board substrate; the insulation board is of a cuboid structure, is made of plastic or phenolic resin and bakelite, can resist 40kV direct current high voltage, has the leakage current of less than 10 muA, the normal temperature of less than 40 ℃ and the humidity of less than 80 percent, has the insulation resistance of more than 20G omega, and can meet the measurement requirement of the insulation resistance; the device comprises a device box body and a cuboid structure, wherein a bottom plate is an insulating part, the other 5 plates are insulating bakelite parts, and a hole-formed assembling part is a carrier of a device frame structure, each electrical element and each circuit board; the internal space of the box body can be used for storing common wires, and each door of the box body is connected to the box body through a hinge.
The mechanical rotary door lock is used for effectively closing each door of the box body and manually unlocking the structure; the stay bar is of a telescopic rod structure and is used for opening each door and enabling the main panel to be horizontal.
To the binding post of transformer, the foraminiferous terminal of 50A is selected for use to the current terminal, and the inserted sheet of being convenient for compresses tightly to be connected or the plug is connected the selection, and yellow green red black four-color is distinguished, accords with the electrical requirement, and the foraminiferous terminal of 5A is selected for use to the voltage terminal, other with the current terminal.
Connecting terminal of DC resistance tester: selecting a red-black structure, and connecting other terminals to the transformer; the connecting terminal of the transformation ratio tester is selected from the same voltage terminal and used for testing transformation ratio items and no-load items
And the micro button switch is used for circularly selecting different channels to communicate the transformer winding terminal and the direct-current resistance tester terminal, and the circuit can be switched by clicking the button after wiring is realized.
The indicator lamp adopts a high-brightness red LED lamp, so that gated channel identification is facilitated under strong light or in different occasions of dark environments; and the solid-state relay selects 40A 250V, is controlled by the single-chip microcomputer control module, and is connected with different required channels according to program setting.
The singlechip control module is used for setting a program and controlling the solid-state relay; a circuit board: providing an installation carrier and a wiring space for the control module, the solid-state relay and the power supply module; a power supply module: the power supply required by the singlechip control module and the control coil of the solid-state relay is provided; threading holes: the device is used for directly connecting the common wiring to each wiring terminal, the device side is not detached, and the device can be rapidly stored after being used; and the alternating current 220V power line is used for providing an alternating current power supply for the power supply module.
Claims (10)
1. The utility model provides a transformer is experimental with multi-functional route selection device which characterized in that: the multifunctional line selection device for the transformer test comprises 1 insulation base plate, 1 device main box body, 8 wiring terminals to a transformer, 4 wiring terminals to a direct current resistance tester, 4 wiring terminals to a transformation ratio tester, 4 current terminals to a no-load test, 2 micro-button switches, 4 three-gear ship-shaped switches, 1 4P double throw disconnecting link, 1 4P short circuit disconnecting link, 7 indicator lamps in two rows, 1 power supply plate, 1 single chip microcomputer control module, 8 solid-state relays and 1 circuit board substrate; the insulation board is of a cuboid structure, is made of plastic or phenolic resin and bakelite, can resist 40kV direct current high voltage, has the leakage current of less than 10 muA, the normal temperature of less than 40 ℃ and the humidity of less than 80 percent, has the insulation resistance of more than 20G omega, and can meet the measurement requirement of the insulation resistance; the device comprises a device box body and a cuboid structure, wherein a bottom plate is an insulating part, the other 5 plates are insulating bakelite parts, and a hole-formed assembling part is a carrier of a device frame structure, each electrical element and each circuit board; the internal space of the box body can be used for storing common wires, and each door of the box body is connected to the box body through a hinge.
2. The multifunctional wire selection device for the transformer test according to claim 1, characterized in that: the mechanical rotary door lock is used for effectively closing each door of the box body and manually unlocking the structure; the stay bar is of a telescopic rod structure and is used for opening each door and enabling the main panel to be horizontal.
3. The multifunctional wire selection device for the transformer test according to claim 1, characterized in that: to the binding post of transformer, the foraminiferous terminal of 50A is selected for use to the current terminal, and the inserted sheet of being convenient for compresses tightly to be connected or the plug is connected the selection, and yellow green red black four-color is distinguished, accords with the electrical requirement, and the foraminiferous terminal of 5A is selected for use to the voltage terminal, other with the current terminal.
4. The multifunctional wire selection device for the transformer test according to claim 1, characterized in that: connecting terminal of DC resistance tester: selecting a red-black structure, and connecting other terminals to the transformer; and the wiring terminal of the transformation ratio tester and the voltage terminal are selected and used for testing transformation ratio items and no-load items.
5. The multifunctional wire selection device for the transformer test according to claim 1, characterized in that: the current wiring terminal for the no-load test, the same current terminal and the wiring terminal to the transformation ratio tester are jointly used for the no-load test and the loss measurement through the mutual inductor.
6. According to the claimsAsk 1 the experimental multi-functional route selection device of using of transformer which characterized in that: 2.5mm of AC voltage-resistant short-circuit line2And the copper conducting wires are used for short-circuiting all current terminals after passing through the disconnecting link and connecting the current terminals with the high-voltage end of a test transformer or other alternating-current voltage withstand devices.
7. The multifunctional wire selection device for the transformer test according to claim 1, characterized in that: the three-gear ship-shaped switch adopts a 10A black plastic shell piece and is used for switching a direct resistance side and a transformation ratio side of a voltage terminal; 4P double throw disconnecting link: a 63A 690V 4-pole double-throw switch is adopted and used for switching a no-load test side and a direct resistance side of a current terminal; 4P short circuit knife switch: a4-pole single-throw common knife switch of 10A 380 is adopted, and a transformer winding for alternating current voltage resistance is short-circuited through a terminal.
8. The multifunctional wire selection device for the transformer test according to claim 1, characterized in that: and the micro button switch is used for circularly selecting different channels to communicate the transformer winding terminal and the direct-current resistance tester terminal, and the circuit can be switched by clicking the button after wiring is realized.
9. The multifunctional wire selection device for the transformer test according to claim 1, characterized in that: the indicator lamp adopts a high-brightness red LED lamp, so that gated channel identification is facilitated under strong light or in different occasions of dark environments; and the solid-state relay selects 40A 250V, is controlled by the single-chip microcomputer control module, and is connected with different required channels according to program setting.
10. The multifunctional wire selection device for the transformer test according to claim 1, characterized in that: the singlechip control module is used for setting a program and controlling the solid-state relay; a circuit board: providing an installation carrier and a wiring space for the control module, the solid-state relay and the power supply module; a power supply module: the power supply required by the singlechip control module and the control coil of the solid-state relay is provided; threading holes: the device is used for directly connecting the common wiring to each wiring terminal, the device side is not detached, and the device can be rapidly stored after being used; and the alternating current 220V power line is used for providing an alternating current power supply for the power supply module.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011311622.8A CN112305364A (en) | 2020-11-20 | 2020-11-20 | Multifunctional wire selecting device for transformer test |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011311622.8A CN112305364A (en) | 2020-11-20 | 2020-11-20 | Multifunctional wire selecting device for transformer test |
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| Publication Number | Publication Date |
|---|---|
| CN112305364A true CN112305364A (en) | 2021-02-02 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202011311622.8A Pending CN112305364A (en) | 2020-11-20 | 2020-11-20 | Multifunctional wire selecting device for transformer test |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117590281A (en) * | 2024-01-18 | 2024-02-23 | 保定市斯麦尔电气有限公司 | Industrial control type grounding line selection device for low-current grounding system |
-
2020
- 2020-11-20 CN CN202011311622.8A patent/CN112305364A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117590281A (en) * | 2024-01-18 | 2024-02-23 | 保定市斯麦尔电气有限公司 | Industrial control type grounding line selection device for low-current grounding system |
| CN117590281B (en) * | 2024-01-18 | 2024-04-05 | 保定市斯麦尔电气有限公司 | Industrial control type grounding line selection device for low-current grounding system |
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