CN208459444U - Three-phase through-flow protective device - Google Patents
Three-phase through-flow protective device Download PDFInfo
- Publication number
- CN208459444U CN208459444U CN201821193937.5U CN201821193937U CN208459444U CN 208459444 U CN208459444 U CN 208459444U CN 201821193937 U CN201821193937 U CN 201821193937U CN 208459444 U CN208459444 U CN 208459444U
- Authority
- CN
- China
- Prior art keywords
- normal opened
- normally closed
- opened contact
- arrester
- contact
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
- 230000001681 protective effect Effects 0.000 title claims abstract description 13
- 238000012423 maintenance Methods 0.000 claims abstract description 11
- 230000005611 electricity Effects 0.000 claims description 8
- 238000005259 measurement Methods 0.000 description 8
- 238000012360 testing method Methods 0.000 description 7
- 239000004020 conductor Substances 0.000 description 6
- GOLXNESZZPUPJE-UHFFFAOYSA-N spiromesifen Chemical compound CC1=CC(C)=CC(C)=C1C(C(O1)=O)=C(OC(=O)CC(C)(C)C)C11CCCC1 GOLXNESZZPUPJE-UHFFFAOYSA-N 0.000 description 4
- 230000005540 biological transmission Effects 0.000 description 3
- 238000010586 diagram Methods 0.000 description 2
- 238000009413 insulation Methods 0.000 description 2
- 230000007935 neutral effect Effects 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 238000000605 extraction Methods 0.000 description 1
- 238000012812 general test Methods 0.000 description 1
- 238000002955 isolation Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 230000001012 protector Effects 0.000 description 1
- 239000000725 suspension Substances 0.000 description 1
Landscapes
- Keying Circuit Devices (AREA)
Abstract
The utility model three-phase through-flow protective device belongs to three-phase through-flow protective device technical field；Including route beginning equipment and line end equipment；The input terminal of route beginning equipment is connected with three-phase maintenance power supply, and the input terminal of route beginning equipment is provided with three-phase current input terminal, including input terminal P1A, P1B, P1C；Be internally provided with the contactor ZJ1 and the normal opened contact of contactor ZJ2, the contactor ZJ1 of route beginning equipment are ZJ1-1, ZJ1-2, ZJ1-3, ZJ1-4, ZJ1-5, ZJ1-6；The normal opened contact of the contactor ZJ2 is ZJ2-1, ZJ2-2, ZJ2-3, and the normally closed contact of the contactor ZJ2 is ZJ2-4, ZJ2-5, ZJ2-6；The output end of route beginning equipment is connected with line side three-phase conducting wire, and the output end of route beginning equipment is provided with three-phase current output terminal, including output terminal P2A, P2B, P2C；The utility model is applied to the occasion of three-phase through-flow.
Description
Technical field
The utility model three-phase through-flow protective device belongs to three-phase through-flow protective device technical field.
Background technique
Using the balanced three-phase voltage in maintenance power box in substation station, applying electric current to equipment by current limiting measures is
A kind of very efficient loop check means, but when adding electric current to transmission line of electricity, induced voltage is to test present on route
The safety of personnel constitutes a threat to, thus design it is a kind of can to the protective device that induced voltage is measured in real time, by it is non-often with
There is realistic meaning.
Utility model content
In order to overcome the deficiencies in the prior art, technical problem to be solved in the utility model are as follows: provide one kind
Three-phase through-flow protective device；In order to solve the above-mentioned technical problem, the technical solution adopted in the utility model are as follows: three-phase through-flow protection
Device, including route beginning equipment and line end equipment；
The input terminal of route beginning equipment is connected with three-phase maintenance power supply, and the input terminal of route beginning equipment is set
It is equipped with three-phase current input terminal, including input terminal P1A, P1B, P1C；
Route beginning equipment is internally provided with contactor ZJ1 and contactor ZJ2, and the contactor ZJ1's is normally opened
Contact is ZJ1-1, ZJ1-2, ZJ1-3, ZJ1-4, ZJ1-5, ZJ1-6；
The normal opened contact of the contactor ZJ2 is ZJ2-1, ZJ2-2, ZJ2-3, and the normally closed contact of the contactor ZJ2 is
ZJ2-4,ZJ2-5,ZJ2-6；
The output end of route beginning equipment is connected with line side three-phase conducting wire, the output end of route beginning equipment
It is provided with three-phase current output terminal, including output terminal P2A, P2B, P2C；
The circuit structure of route beginning equipment are as follows:
One end of the normal opened contact ZJ1-1 is connected with input terminal P1A, the other end of the normal opened contact ZJ1-1 with
The end of incoming cables of ammeter A1 is connected, the leading-out terminal of the ammeter A1 and connect behind one end of arrester F1 with normal opened contact ZJ2-1
One end be connected, the other end of the normal opened contact ZJ2-1 is connected with one end of normal opened contact ZJ1-4, the normal opened contact
The other end of ZJ1-4 and the one end for meeting arrester F4, one end of voltmeter V1, behind the end of incoming cables of ammeter A4 with output terminal
P2A is connected；The output end of the ammeter A4 is connected with one end of normally closed contact ZJ2-4, and the normally closed contact ZJ2-4's is another
Hold and connect the other end of voltmeter V1, the other end of arrester F4 is grounded after the other end of arrester F1；
One end of the normal opened contact ZJ1-2 is connected with input terminal P1B, the other end of the normal opened contact ZJ1-2 with
The end of incoming cables of ammeter A2 is connected, the leading-out terminal of the ammeter A2 and connect behind one end of arrester F2 with normal opened contact ZJ2-2
One end be connected, the other end of the normal opened contact ZJ2-2 is connected with one end of normal opened contact ZJ1-5, the normal opened contact
The other end of ZJ1-5 and the one end for meeting arrester F5, one end of voltmeter V2, behind the end of incoming cables of ammeter A5 with output terminal
P2B is connected；The output end of the ammeter A5 is connected with one end of normally closed contact ZJ2-5, and the normally closed contact ZJ2-5's is another
Hold and connect the other end of voltmeter V2, the other end of arrester F5 is grounded after the other end of arrester F2；
One end of the normal opened contact ZJ1-3 is connected with input terminal P1C, the other end of the normal opened contact ZJ1-3 with
The end of incoming cables of ammeter A3 is connected, the leading-out terminal of the ammeter A3 and connect behind one end of arrester F3 with normal opened contact ZJ2-3
One end be connected, the other end of the normal opened contact ZJ2-3 is connected with one end of normal opened contact ZJ1-6, the normal opened contact
The other end of ZJ1-6 and the one end for meeting arrester F6, one end of voltmeter V3, behind the end of incoming cables of ammeter A6 with output terminal
P2C is connected；The output end of the ammeter A6 is connected with one end of normally closed contact ZJ2-6, and the normally closed contact ZJ2-6's is another
Hold and connect the other end of voltmeter V3, the other end of arrester F6 is grounded after the other end of arrester F3；
The inside of route beginning equipment is additionally provided with beginning device control module, the beginning device control module
It is internally provided with air switch DK1, button S1 and its normally closed contact S1-1. button T1 and its normally closed contact T1-1；
The circuit structure of the beginning device control module are as follows: one end of the air switch DK1 and input terminal P1C phase
Even, the other end of the air switch DK1 and it is connected after connecing one end of button S1 with one end of button T1, the button S1's is another
It is connected after the concatenation contactor ZJ2 coil of one end with one end of normally closed contact T1-1, the other end of the button T1 concatenates contactor
It is connected after ZJ1 coil with one end of normally closed contact S1-1, the other end of the normally closed contact T1-1 simultaneously connects normally closed contact S1-1's
It is connected after the other end with maintenance power supply N phase port.
The input terminal of the line end equipment is connected with high-power low-voltage capacitance, the input terminal of the line end equipment
It is provided with three-phase current input terminal, including input terminal P3A, P3B, P3C；
The line end equipment is internally provided with contactor ZJ3, ZJ4, ZJ5, ZJ6；
The normal opened contact of the contactor ZJ3 is ZJ3-1, ZJ3-2；
The normal opened contact of the contactor ZJ4 is ZJ4-1, ZJ4-2；
The normal opened contact of the contactor ZJ5 is ZJ5-1, ZJ5-2；
The normal opened contact of the contactor ZJ6 is ZJ6-1, ZJ6-2, ZJ6-3, and the normally closed contact of the contactor ZJ6 is
ZJ6-4,ZJ6-5,ZJ6-6；
The output end of the line end equipment is connected with line side three-phase conducting wire, the output end of the line end equipment
It is provided with three-phase current output terminal, including output terminal P4A, P4B, P4C；
The circuit structure of the line end equipment are as follows:
One end of the normal opened contact ZJ3-1 is connected with input terminal P3A, the other end of the normal opened contact ZJ3-1 with
The end of incoming cables of ammeter A7 is connected, the leading-out terminal of the ammeter A7 and connect behind one end of arrester F7 with normal opened contact ZJ6-1
One end be connected, the other end of the normal opened contact ZJ6-1 is connected with one end of normal opened contact ZJ3-2, the normal opened contact
The other end of ZJ3-2 and the one end for meeting arrester F10, one end of voltmeter V4, behind the end of incoming cables of ammeter A10 with output terminal
P4A is connected；The output end of the ammeter A10 is connected with one end of normally closed contact ZJ6-4, and the normally closed contact ZJ6-4's is another
One end and the other end for meeting voltmeter V4, the other end of arrester F10 are grounded after the other end of arrester F7；
One end of the normal opened contact ZJ4-1 is connected with input terminal P3B, the other end of the normal opened contact ZJ4-1 with
The end of incoming cables of ammeter A8 is connected, the leading-out terminal of the ammeter A8 and connect behind one end of arrester F8 with normal opened contact ZJ6-2
One end be connected, the other end of the normal opened contact ZJ6-2 is connected with one end of normal opened contact ZJ4-2, the normal opened contact
The other end of ZJ4-2 and the one end for meeting arrester F11, one end of voltmeter V5, behind the end of incoming cables of ammeter A11 with output terminal
P4B is connected；The output end of the ammeter A11 is connected with one end of normally closed contact ZJ6-5, and the normally closed contact ZJ6-5's is another
One end and the other end for meeting voltmeter V5, the other end of arrester F11 are grounded after the other end of arrester F8；
One end of the normal opened contact ZJ5-1 is connected with input terminal P3C, the other end of the normal opened contact ZJ5-1 with
The end of incoming cables of ammeter A9 is connected, the leading-out terminal of the ammeter A9 and connect behind one end of arrester F9 with normal opened contact ZJ6-3
One end be connected, the other end of the normal opened contact ZJ6-3 is connected with one end of normal opened contact ZJ5-2, the normal opened contact
The other end of ZJ5-2 and the one end for meeting arrester F12, one end of voltmeter V6, behind the end of incoming cables of ammeter A12 with output terminal
P4C is connected；The output end of the ammeter A12 is connected with one end of normally closed contact ZJ6-6, and the normally closed contact ZJ6-6's is another
One end and the other end for meeting voltmeter V6, the other end of arrester F12 are grounded after the other end of arrester F9；
The inside of the line end equipment is additionally provided with end-equipment control module, the end-equipment control module
It is internally provided with air switch DK2, button S2 and its normally closed contact S2-1, S2-2, S2-3, button T2 and its normally closed contact T2-
1, button T3 and its normally closed contact T3-1, button T4 and its normally closed contact T4-1；
The circuit structure of the end-equipment control module are as follows: a termination mains supply firewire of the air switch DK2
End, the other end of the air switch DK2 and the one end for meeting button S2, one end of button T2, behind one end of button T3 with button
One end of T4 is connected, and the other end of the button S2 is sequentially connected in series contactor ZJ6 coil, normally closed contact T2-1, normally closed contact T3-
It is connected after 1 with one end of normally closed contact T4-1；
It is connected after the other end concatenation contactor ZJ3 coil of the button T2 with one end of normally closed contact S2-1；
It is connected after the other end concatenation contactor ZJ4 coil of the button T3 with one end of normally closed contact S2-2；
It is connected after the other end concatenation contactor ZJ5 coil of the button T4 with one end of normally closed contact S2-3；
The other end of the normally closed contact T4-1 and the other end for meeting normally closed contact S2-1, normally closed contact S2-2's is another
End, the other end of normally closed contact S2-3 are followed by mains supply zero line side.
Route beginning equipment and line end equipment are all set in shell, are provided with electric current on the surface of shell
Table display screen, voltmeter display screen, button and switch.
What the utility model had compared with the existing technology has the beneficial effect that the utility model provides a kind of protective device general
Test wire and testing crew are isolated, and three-phase line leads to closed experiment casing by the Special test conducting wire of all insulation
Interior, which is made of beginning equipment and end-equipment two parts, and the beginning equipment undertakes maintenance power supply and transmission line of electricity connects
Control is connect, the end-equipment mainly completes the connection of transmission line of electricity and capacitive load；The beginning equipment has logical
The functions such as stream, measurement, overvoltage protection, end-equipment have bringing onto load, overvoltage protection, three-phase shortcircuit function；The utility model is adopted
The person isolation for making testing crew and test connection with quarantine measures, ensure that safety；Whole device has overvoltage protection, measurement
Equal multiple functions, it is convenient and simple using button manipulations, suitable for the occasion of three-phase through-flow in need install and use, be suitable for
The operations such as route direction finding amount, current transformer replacement.
Detailed description of the invention
The utility model is described further with reference to the accompanying drawing:
Fig. 1 is the electrical block diagram of the utility model route beginning equipment；
Fig. 2 is the electrical block diagram of the utility model line end equipment；
In figure: 1 being route beginning equipment, 2 be line end equipment, 3 be three-phase maintenance power supply, 4 be that line side three-phase is led
Line, 5 be beginning device control module, 6 be high-power low-voltage capacitance, 7 be end-equipment control module.
Specific embodiment
As depicted in figs. 1 and 2, the utility model three-phase through-flow protective device, including route beginning equipment 1 and line end
Equipment 2；
The input terminal of route beginning equipment 1 is connected with three-phase maintenance power supply 3, the input of route beginning equipment 1
End is provided with three-phase current input terminal, including input terminal P1A, P1B, P1C；
Route beginning equipment 1 is internally provided with contactor ZJ1 and contactor ZJ2, and the contactor ZJ1's is normally opened
Contact is ZJ1-1, ZJ1-2, ZJ1-3, ZJ1-4, ZJ1-5, ZJ1-6；
The normal opened contact of the contactor ZJ2 is ZJ2-1, ZJ2-2, ZJ2-3, and the normally closed contact of the contactor ZJ2 is
ZJ2-4,ZJ2-5,ZJ2-6；
The output end of route beginning equipment 1 is connected with line side three-phase conducting wire 4, route beginning equipment 1 it is defeated
Outlet is provided with three-phase current output terminal, including output terminal P2A, P2B, P2C；
The circuit structure of route beginning equipment 1 are as follows:
One end of the normal opened contact ZJ1-1 is connected with input terminal P1A, the other end of the normal opened contact ZJ1-1 with
The end of incoming cables of ammeter A1 is connected, the leading-out terminal of the ammeter A1 and connect behind one end of arrester F1 with normal opened contact ZJ2-1
One end be connected, the other end of the normal opened contact ZJ2-1 is connected with one end of normal opened contact ZJ1-4, the normal opened contact
The other end of ZJ1-4 and the one end for meeting arrester F4, one end of voltmeter V1, behind the end of incoming cables of ammeter A4 with output terminal
P2A is connected；The output end of the ammeter A4 is connected with one end of normally closed contact ZJ2-4, and the normally closed contact ZJ2-4's is another
Hold and connect the other end of voltmeter V1, the other end of arrester F4 is grounded after the other end of arrester F1；
One end of the normal opened contact ZJ1-2 is connected with input terminal P1B, the other end of the normal opened contact ZJ1-2 with
The end of incoming cables of ammeter A2 is connected, the leading-out terminal of the ammeter A2 and connect behind one end of arrester F2 with normal opened contact ZJ2-2
One end be connected, the other end of the normal opened contact ZJ2-2 is connected with one end of normal opened contact ZJ1-5, the normal opened contact
The other end of ZJ1-5 and the one end for meeting arrester F5, one end of voltmeter V2, behind the end of incoming cables of ammeter A5 with output terminal
P2B is connected；The output end of the ammeter A5 is connected with one end of normally closed contact ZJ2-5, and the normally closed contact ZJ2-5's is another
Hold and connect the other end of voltmeter V2, the other end of arrester F5 is grounded after the other end of arrester F2；
One end of the normal opened contact ZJ1-3 is connected with input terminal P1C, the other end of the normal opened contact ZJ1-3 with
The end of incoming cables of ammeter A3 is connected, the leading-out terminal of the ammeter A3 and connect behind one end of arrester F3 with normal opened contact ZJ2-3
One end be connected, the other end of the normal opened contact ZJ2-3 is connected with one end of normal opened contact ZJ1-6, the normal opened contact
The other end of ZJ1-6 and the one end for meeting arrester F6, one end of voltmeter V3, behind the end of incoming cables of ammeter A6 with output terminal
P2C is connected；The output end of the ammeter A6 is connected with one end of normally closed contact ZJ2-6, and the normally closed contact ZJ2-6's is another
Hold and connect the other end of voltmeter V3, the other end of arrester F6 is grounded after the other end of arrester F3；
The inside of route beginning equipment 1 is additionally provided with beginning device control module 5, the beginning device control module
5 are internally provided with air switch DK1, button S1 and its normally closed contact S1-1. button T1 and its normally closed contact T1-1；
The circuit structure of the beginning device control module 5 are as follows: one end of the air switch DK1 and input terminal P1C
It is connected, the other end of the air switch DK1 is simultaneously connected after connecing one end of button S1 with one end of button T1, the button S1's
It is connected after other end concatenation contactor ZJ2 coil with one end of normally closed contact T1-1, the other end of the button T1 concatenates contact
It is connected after device ZJ1 coil with one end of normally closed contact S1-1, the other end of the normally closed contact T1-1 simultaneously meets normally closed contact S1-1
The other end after with maintenance power supply N phase port be connected.
The input terminal of the line end equipment 2 is connected with high-power low-voltage capacitance 6, the line end equipment 2 it is defeated
Enter end and is provided with three-phase current input terminal, including input terminal P3A, P3B, P3C；
The line end equipment 2 is internally provided with contactor ZJ3, ZJ4, ZJ5, ZJ6；
The normal opened contact of the contactor ZJ3 is ZJ3-1, ZJ3-2；
The normal opened contact of the contactor ZJ4 is ZJ4-1, ZJ4-2；
The normal opened contact of the contactor ZJ5 is ZJ5-1, ZJ5-2；
The normal opened contact of the contactor ZJ6 is ZJ6-1, ZJ6-2, ZJ6-3, and the normally closed contact of the contactor ZJ6 is
ZJ6-4,ZJ6-5,ZJ6-6；
The output end of the line end equipment 2 is connected with line side three-phase conducting wire 4, the line end equipment 2 it is defeated
Outlet is provided with three-phase current output terminal, including output terminal P4A, P4B, P4C；
The circuit structure of the line end equipment 2 are as follows:
One end of the normal opened contact ZJ3-1 is connected with input terminal P3A, the other end of the normal opened contact ZJ3-1 with
The end of incoming cables of ammeter A7 is connected, the leading-out terminal of the ammeter A7 and connect behind one end of arrester F7 with normal opened contact ZJ6-1
One end be connected, the other end of the normal opened contact ZJ6-1 is connected with one end of normal opened contact ZJ3-2, the normal opened contact
The other end of ZJ3-2 and the one end for meeting arrester F10, one end of voltmeter V4, behind the end of incoming cables of ammeter A10 with output terminal
P4A is connected；The output end of the ammeter A10 is connected with one end of normally closed contact ZJ6-4, and the normally closed contact ZJ6-4's is another
One end and the other end for meeting voltmeter V4, the other end of arrester F10 are grounded after the other end of arrester F7；
One end of the normal opened contact ZJ4-1 is connected with input terminal P3B, the other end of the normal opened contact ZJ4-1 with
The end of incoming cables of ammeter A8 is connected, the leading-out terminal of the ammeter A8 and connect behind one end of arrester F8 with normal opened contact ZJ6-2
One end be connected, the other end of the normal opened contact ZJ6-2 is connected with one end of normal opened contact ZJ4-2, the normal opened contact
The other end of ZJ4-2 and the one end for meeting arrester F11, one end of voltmeter V5, behind the end of incoming cables of ammeter A11 with output terminal
P4B is connected；The output end of the ammeter A11 is connected with one end of normally closed contact ZJ6-5, and the normally closed contact ZJ6-5's is another
One end and the other end for meeting voltmeter V5, the other end of arrester F11 are grounded after the other end of arrester F8；
One end of the normal opened contact ZJ5-1 is connected with input terminal P3C, the other end of the normal opened contact ZJ5-1 with
The end of incoming cables of ammeter A9 is connected, the leading-out terminal of the ammeter A9 and connect behind one end of arrester F9 with normal opened contact ZJ6-3
One end be connected, the other end of the normal opened contact ZJ6-3 is connected with one end of normal opened contact ZJ5-2, the normal opened contact
The other end of ZJ5-2 and the one end for meeting arrester F12, one end of voltmeter V6, behind the end of incoming cables of ammeter A12 with output terminal
P4C is connected；The output end of the ammeter A12 is connected with one end of normally closed contact ZJ6-6, and the normally closed contact ZJ6-6's is another
One end and the other end for meeting voltmeter V6, the other end of arrester F12 are grounded after the other end of arrester F9；
The inside of the line end equipment 2 is additionally provided with end-equipment control module 7, the end-equipment control module
7 are internally provided with air switch DK2, button S2 and its normally closed contact S2-1, S2-2, S2-3, button T2 and its normally closed contact
T2-1, button T3 and its normally closed contact T3-1, button T4 and its normally closed contact T4-1；
The circuit structure of the end-equipment control module 7 are as follows: a termination mains supply firewire of the air switch DK2
End, the other end of the air switch DK2 and the one end for meeting button S2, one end of button T2, behind one end of button T3 with button
One end of T4 is connected, and the other end of the button S2 is sequentially connected in series contactor ZJ6 coil, normally closed contact T2-1, normally closed contact T3-
It is connected after 1 with one end of normally closed contact T4-1；
It is connected after the other end concatenation contactor ZJ3 coil of the button T2 with one end of normally closed contact S2-1；
It is connected after the other end concatenation contactor ZJ4 coil of the button T3 with one end of normally closed contact S2-2；
It is connected after the other end concatenation contactor ZJ5 coil of the button T4 with one end of normally closed contact S2-3；
The other end of the normally closed contact T4-1 and the other end for meeting normally closed contact S2-1, normally closed contact S2-2's is another
End, the other end of normally closed contact S2-3 are followed by mains supply zero line side.
Route beginning equipment 1 and line end equipment 2 are all set in shell, are provided with electricity on the surface of shell
Flow table display screen, voltmeter display screen, button and switch.
In route beginning equipment 1, described P1A, P1B, P1C are the three-phase current input terminal of equipment, and N phase is the neutral conductor
Terminal；The three phase mains and N line inputted from three-phase maintenance power supply 3 is connect with terminal；Described P2A, P2B, P2C are that three-phase current is defeated
Terminal out is connected to triple line terminal by insulated conductor.
Setting is there are two button S1 and T1 in route beginning equipment, S1 button press rear equipment output terminal P2A, P2B,
P2C terminal is no longer grounded, and T1 presses input terminal P1A, P1B, P1C of rear equipment and output terminal P2A, P2B, P2C are connected；Together
When button S1 and T1 can be latched mutually by respective normally closed contact S1-1, T1-1；G terminal in equipment is ground terminal.
There are two contactor ZJ1 and ZJ2, the contactor ZJ1 to be responsible for control for setting altogether inside route beginning equipment 1
The connection and disconnection of the input terminal and the output terminal processed, the normal opened contact ZJ1-1, ZJ1-2, ZJ1-3, ZJ1-4, ZJ1-5,
ZJ1-6 is the six secondary normal opened contacts of contactor ZJ1 respectively.
The contactor ZJ1 is controlled by button T1, and button T1 presses rear auxiliary contact conducting, the indicator light point in button
Bright, when pressing again, auxiliary contact is disconnected, and the indicator light in button extinguishes.
The three secondary normal opened contacts that described ZJ2-1, ZJ2-2, ZJ2-3 are contactor ZJ2 are serially connected in three-phase input and defeated respectively
Out between circuit, the three secondary normally closed contacts that described ZJ2-4, ZJ2-5, ZJ2-6 are contactor ZJ2, control three-phase output end P2A,
P2B, P2C terminal be connected to and disconnect.
Contactor ZJ2 is controlled by button S1, and after the button S1 is pressed, auxiliary contact is connected, the indicator light point in button
Bright, when pressing again, auxiliary contact is disconnected, and the indicator light in button extinguishes.
Described A1, A2, A3 are ammeter, the three-phase current being responsible between measurement the input terminal and the output terminal；
Described A4, A5, A6 are ammeter, the three-phase loop current after being responsible for measurement three-phase output end ground connection；
Described V1, V2, V3 are voltmeter, are responsible for the voltage-to-ground of measurement three-phase terminal P2A, P2B, P2C terminal；
Described F1, F2, F3, F4, F5, F6 are arrester, are punctured when the voltage on circuit is greater than 380V；
The DK1 is device job control power supply air switch, after the switch closes, the electrification of device control loop.
When route beginning equipment 1 is not charged, output terminal P2A, P2B, P2C secondary normally closed connect by the three of contactor ZJ2
Point ZJ2-4, ZJ2-5, ZJ2-6 ground connection；Other three pair normal opened contact ZJ2-1, ZJ2-2, ZJ2-3 of the contactor ZJ2 is opened,
It is latched through-flow circuit, short circuit occurs after preventing three phase mains from accessing；After lower button S1, the normally closed contact of contactor ZJ2 is opened,
Three-phase ground is opened；Normal opened contact closure, preparation.
After lower button T1, the starting of contactor ZJ1 contactor, normal opened contact closure, by three-phase input terminal and output end
Sub-loop is connected, and the work of this side is completed.
Two buttons of S1 and T1 are concatenated into mutual normally closed contact as mutual locked loop, operation error can be prevented.
It is carrying out as follows when specific operation:
Step 1: first by the G terminal reliable ground of equipment；
Step 2: three-phase line is connect by insulated conductor in external grounding switch or ground line reliable ground
It, when specific operation can be by by three single aviation plugs and equipment to output terminal P2A, P2B, P2C terminal of equipment
Connection, to increase safety；
Step 3: three phase mains is accessed P1A, P1B, P1C three-phase terminal, the neutral conductor accesses N-terminal.
It is removed step 4: pulling open or being grounded the grounding switch of route, checks the numerical values recited of ammeter A4, A5, A6,
It can work when (being less than 1A) within safe range, when being greater than 1A, forbid work.
Step 5: closing air switch DK1, S1 button is pressed, the ground connection of equipment is opened, and checks V1, V2, V3 couple of equipment
Ground voltage table size can work when less than 50V, forbid work when greater than 50V.
Step 6: connection route opposite side, will connect side apparatus, and meet operating condition, and press T1 button, and start to lead to
Stream；T1 button is pressed after wait work again, contactor returns；S1 push-button reset is pressed, output terminal restores ground connection.
In route end-equipment 2, described P3A, P3B, P3C are that the threephase load of equipment accesses terminal；The P4A,
P4B, P4C are that three-phase line accesses terminal, are connected to triple line terminal by insulated conductor.
Setting is there are four button S2 and T2, T3, T4 in the line end equipment 2, equipment after button S2 is pressed
P4A, P4B, P4C terminal are no longer grounded, and the P3A terminal Yu P4A terminal of equipment are connected after button T2 is pressed, when button T3 is pressed
The P3B terminal Yu P4B terminal of equipment are connected afterwards, and the P3C terminal Yu P4C terminal of equipment are connected after button T4 is pressed.
The button S2 and T2, T3, T4 button are closed mutually by respective normally closed contact S2-1, T2-1, T3-1, T4-1
Lock.
The mains electricity input end of access is specially that AC terminal connects AC power source, is drawn by socket type.
The inside of line end equipment 2 is arranged altogether there are four contactor ZJ3, ZJ4, ZJ5, ZJ6,
Wherein contactor ZJ3 is responsible for terminal INA and terminal OUTA connection and disconnection；
Contactor ZJ4 is responsible for terminals P 3B and terminals P 4B connection and disconnection；
Contactor ZJ5 is responsible for terminals P 3C and terminals P 4C connection and disconnection.
Contactor ZJ6 is responsible for output terminal P4A, P4B, P4C and ground terminal connection and disconnection.
Described ZJ6-1, ZJ6-2, ZJ6-3, ZJ6-4, ZJ6-5, ZJ6-6 are the three secondary normal opened contacts of contactor ZJ6 respectively
With three width normally closed contacts.The contactor ZJ6 is controlled by button S2, and button S2 presses rear auxiliary contact conducting, the finger in button
Show that lamp is lighted, when pressing again, auxiliary contact is disconnected, and the indicator light in button extinguishes.
Described ZJ3-1, ZJ3-2 are two secondary normal opened contacts of ZJ3 contactor, are serially connected in A phase P3A and P4A terminal respectively and return
Between road, contactor ZJ3 is started and is returned by T2 button；Described ZJ4-1, ZJ4-2 are two secondary normal opened contacts of ZJ4 contactor,
It is serially connected between B phase P3B and P4B terminal circuit respectively, contactor ZJ4 is started and returned by T3 button；Described ZJ5-1, ZJ5-2
For two secondary normal opened contacts of ZJ5 contactor, be serially connected between C phase P3C and P4C terminal circuit respectively, ZJ5 by the starting of T4 button and
It returns.
Described A7, A8, A9 are ammeter, three be responsible between measurement terminal P3A, P3B, P3C and terminals P 4A, P4B, P4C
Phase current；
Described A10, A11, A12 are ammeter, the three-phase loop current after being responsible for measurement P4A, P4B, P4C terminal ground.
Described V4, V5, V6 are voltmeter, are responsible for the voltage-to-ground of measurement three-phase terminal P4A, P4B, P4C terminal.
Described F7, F8, F9, F10, F11, F12 are arrester, are punctured when the voltage on circuit is greater than 380V.
The DK2 is device job control power supply air switch, after the switch closes, the electrification of device control loop.
When line end equipment 2 is not charged, output terminal P4A, P4B, P4C pass through the three width normally closed contact ZJ6- of ZJ6
4, ZJ6-5, ZJ6-6 are grounded, and other three width normal opened contact ZJ6-1, ZJ6-2, ZJ6-3 of contactor ZJ6 is opened, and are latched through-flow time
After preventing three phase mains from accessing short circuit occurs for road.After pressing S2 button, the starting of ZJ6 contactor, normally closed contact ZJ6-4, ZJ6-5,
ZJ6-6 is opened, and P4A, P4B, P4C terminal of equipment and G terminal circuit disconnect, normal opened contact ZJ6-1, ZJ6-2, ZJ6-3 closure,
Prepare through-flow.
After pressing T2 button, the starting of ZJ3 contactor, A, which is communicated, to be flowed back to road P3A terminal and connects with P4A terminal；
After pressing T3 button, the starting of ZJ4 contactor, B, which is communicated, to be flowed back to road P3B terminal and connects with P4B terminal；
After pressing T4 button, the starting of ZJ5 contactor, C, which is communicated, to be flowed back to road P3C terminal and connects with P4C terminal；
T2, T3, T4 button are pressed again, and each contactor returns.
Described three through-flow start button T2, T3, T4 have concatenated mutual normally closed contact with S2 button as mutually locking
Circuit can prevent operation error.
It is carrying out as follows when specific operation:
Step 1: first by the G terminal reliable ground of equipment；
Step 2: three-phase line is connect by insulated conductor in external grounding switch or ground line reliable ground
To P4A, P4B, P4C terminal of equipment；
Step 3: threephase load is accessed P3A, P3B, P3C three-phase terminal.AC power source access.
It is removed step 4: pulling open or being grounded the grounding switch of route, checks that the numerical value of ammeter A10, A11, A12 are big
It is small, it can work when (being less than 1A) within safe range, when being greater than 1A, forbid work.
Step 5: closing DK2 air switch, S2 button is pressed, the ground connection of equipment is opened, and checks V4, V5, V6 couple of equipment
Ground voltage table size can work when less than 50V, forbid work when greater than 50V.
Step 6: connection route opposite side, will connect side apparatus, and meet operating condition, and press T2, T3, T4 respectively
Button starts through-flow；T2, T3, T4 button are pressed after work again, contactor returns；S2 push-button reset is pressed, route is extensive
Multiple connection.
The utility model two sides are connected to the test wire of three-phase line using 6 squares of all insulation conducting wires, and front end uses insulating bar
Suspension；With using aviation plug to connect when device connection, guarantee the current-carrying part of human body not contact test line, the aviation used is inserted
Head can pass through 40A electric current；Entire shell keeps good ground connection, has the extraction of Special grounding terminal, configures Special grounding conducting wire,
Line footpath uses 16 squares, and length is 10 meters.
Shell is divided into two parts: manipulation part and flow passage component, two parts are properly isolated from, it is ensured that human body behaviour
When control under safe voltage, the utility model uses 380V, 40KA specification using the arrester of configuration.
When Line over-voltage, can be discharged by the pressure limiting equipment of setting in a device, actual use 380V, 40KA wave
Surge protector；
The utility model can measure the induced current and induced voltage of line-to-ground by installing all types of meters, when super
It can stop working when crossing limit value；The operation of device is carried out by button manipulations contactor, can be carried out with route every
From.
The shell of whole device can carry out reliable ground, ensure that the safe operation of staff.
Finally, it should be noted that the above various embodiments is only to illustrate the technical solution of the utility model, rather than it is limited
System；Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should
Understand: it is still possible to modify the technical solutions described in the foregoing embodiments, or to some or all of
Technical characteristic is equivalently replaced；And these are modified or replaceed, it does not separate the essence of the corresponding technical solution, and this is practical new
The range of each embodiment technical solution of type.
Claims (3)
1. three-phase through-flow protective device, it is characterised in that: including route beginning equipment (1) and line end equipment (2)；
The input terminal of route beginning equipment (1) and three-phase maintenance power supply (3) are connected, route beginning equipment (1) it is defeated
Enter end and is provided with three-phase current input terminal, including input terminal P1A, P1B, P1C；
Route beginning equipment (1) is internally provided with contactor ZJ1 and contactor ZJ2, and the normally opened of contactor ZJ1 connects
Point is ZJ1-1, ZJ1-2, ZJ1-3, ZJ1-4, ZJ1-5, ZJ1-6；
The normal opened contact of the contactor ZJ2 is ZJ2-1, ZJ2-2, ZJ2-3, and the normally closed contact of the contactor ZJ2 is ZJ2-
4,ZJ2-5,ZJ2-6；
The output end of route beginning equipment (1) is connected with line side three-phase conducting wire (4), route beginning equipment (1)
Output end is provided with three-phase current output terminal, including output terminal P2A, P2B, P2C；
The circuit structure of route beginning equipment (1) are as follows:
One end of the normal opened contact ZJ1-1 is connected with input terminal P1A, the other end and electric current of the normal opened contact ZJ1-1
The end of incoming cables of Table A 1 is connected, the leading-out terminal of the ammeter A1 and connect behind one end of arrester F1 with normal opened contact ZJ2-1 one
End is connected, and the other end of the normal opened contact ZJ2-1 is connected with one end of normal opened contact ZJ1-4, the normal opened contact ZJ1-4's
The other end and the one end for meeting arrester F4, one end of voltmeter V1 are connected behind the end of incoming cables of ammeter A4 with output terminal P2A；
The output end of the ammeter A4 is connected with one end of normally closed contact ZJ2-4, and the other end of the normally closed contact ZJ2-4 simultaneously connects electricity
The other end of Table V 1 is pressed, the other end of arrester F4 is grounded after the other end of arrester F1；
One end of the normal opened contact ZJ1-2 is connected with input terminal P1B, the other end and electric current of the normal opened contact ZJ1-2
The end of incoming cables of Table A 2 is connected, the leading-out terminal of the ammeter A2 and connect behind one end of arrester F2 with normal opened contact ZJ2-2 one
End is connected, and the other end of the normal opened contact ZJ2-2 is connected with one end of normal opened contact ZJ1-5, the normal opened contact ZJ1-5's
The other end and the one end for meeting arrester F5, one end of voltmeter V2 are connected behind the end of incoming cables of ammeter A5 with output terminal P2B；
The output end of the ammeter A5 is connected with one end of normally closed contact ZJ2-5, and the other end of the normally closed contact ZJ2-5 simultaneously connects electricity
The other end of Table V 2 is pressed, the other end of arrester F5 is grounded after the other end of arrester F2；
One end of the normal opened contact ZJ1-3 is connected with input terminal P1C, the other end and electric current of the normal opened contact ZJ1-3
The end of incoming cables of Table A 3 is connected, the leading-out terminal of the ammeter A3 and connect behind one end of arrester F3 with normal opened contact ZJ2-3 one
End is connected, and the other end of the normal opened contact ZJ2-3 is connected with one end of normal opened contact ZJ1-6, the normal opened contact ZJ1-6's
The other end and the one end for meeting arrester F6, one end of voltmeter V3 are connected behind the end of incoming cables of ammeter A6 with output terminal P2C；
The output end of the ammeter A6 is connected with one end of normally closed contact ZJ2-6, and the other end of the normally closed contact ZJ2-6 simultaneously connects electricity
The other end of Table V 3 is pressed, the other end of arrester F6 is grounded after the other end of arrester F3；
The inside of route beginning equipment (1) is additionally provided with beginning device control module (5), the beginning device control module
(5) be internally provided with air switch DK1, button S1 and its normally closed contact S1-1. button T1 and its normally closed contact T1-1；
The circuit structure of the beginning device control module (5) are as follows: one end of the air switch DK1 and input terminal P1C phase
Even, the other end of the air switch DK1 and it is connected after connecing one end of button S1 with one end of button T1, the button S1's is another
It is connected after the concatenation contactor ZJ2 coil of one end with one end of normally closed contact T1-1, the other end of the button T1 concatenates contactor
It is connected after ZJ1 coil with one end of normally closed contact S1-1, the other end of the normally closed contact T1-1 simultaneously connects normally closed contact S1-1's
It is connected after the other end with maintenance power supply N phase port.
2. three-phase through-flow protective device according to claim 1, it is characterised in that: the line end equipment (2) it is defeated
Enter end to be connected with high-power low-voltage capacitance (6), the input terminal of the line end equipment (2) is provided with three-phase current input terminal
Son, including input terminal P3A, P3B, P3C；
The line end equipment (2) is internally provided with contactor ZJ3, ZJ4, ZJ5, ZJ6；
The normal opened contact of the contactor ZJ3 is ZJ3-1, ZJ3-2；
The normal opened contact of the contactor ZJ4 is ZJ4-1, ZJ4-2；
The normal opened contact of the contactor ZJ5 is ZJ5-1, ZJ5-2；
The normal opened contact of the contactor ZJ6 is ZJ6-1, ZJ6-2, ZJ6-3, and the normally closed contact of the contactor ZJ6 is ZJ6-
4,ZJ6-5,ZJ6-6；
The output end of the line end equipment (2) is connected with line side three-phase conducting wire (4), the line end equipment (2)
Output end is provided with three-phase current output terminal, including output terminal P4A, P4B, P4C；
The circuit structure of the line end equipment (2) are as follows:
One end of the normal opened contact ZJ3-1 is connected with input terminal P3A, the other end and electric current of the normal opened contact ZJ3-1
The end of incoming cables of Table A 7 is connected, the leading-out terminal of the ammeter A7 and connect behind one end of arrester F7 with normal opened contact ZJ6-1 one
End is connected, and the other end of the normal opened contact ZJ6-1 is connected with one end of normal opened contact ZJ3-2, the normal opened contact ZJ3-2's
The other end and the one end for meeting arrester F10, one end of voltmeter V4, behind the end of incoming cables of ammeter A10 with output terminal P4A phase
Even；The output end of the ammeter A10 is connected with one end of normally closed contact ZJ6-4, and the other end of the normally closed contact ZJ6-4 is simultaneously
Connect the other end of voltmeter V4, the other end of arrester F10 is grounded after the other end of arrester F7；
One end of the normal opened contact ZJ4-1 is connected with input terminal P3B, the other end and electric current of the normal opened contact ZJ4-1
The end of incoming cables of Table A 8 is connected, the leading-out terminal of the ammeter A8 and connect behind one end of arrester F8 with normal opened contact ZJ6-2 one
End is connected, and the other end of the normal opened contact ZJ6-2 is connected with one end of normal opened contact ZJ4-2, the normal opened contact ZJ4-2's
The other end and the one end for meeting arrester F11, one end of voltmeter V5, behind the end of incoming cables of ammeter A11 with output terminal P4B phase
Even；The output end of the ammeter A11 is connected with one end of normally closed contact ZJ6-5, and the other end of the normally closed contact ZJ6-5 is simultaneously
Connect the other end of voltmeter V5, the other end of arrester F11 is grounded after the other end of arrester F8；
One end of the normal opened contact ZJ5-1 is connected with input terminal P3C, the other end and electric current of the normal opened contact ZJ5-1
The end of incoming cables of Table A 9 is connected, the leading-out terminal of the ammeter A9 and connect behind one end of arrester F9 with normal opened contact ZJ6-3 one
End is connected, and the other end of the normal opened contact ZJ6-3 is connected with one end of normal opened contact ZJ5-2, the normal opened contact ZJ5-2's
The other end and the one end for meeting arrester F12, one end of voltmeter V6, behind the end of incoming cables of ammeter A12 with output terminal P4C phase
Even；The output end of the ammeter A12 is connected with one end of normally closed contact ZJ6-6, and the other end of the normally closed contact ZJ6-6 is simultaneously
Connect the other end of voltmeter V6, the other end of arrester F12 is grounded after the other end of arrester F9；
The inside of the line end equipment (2) is additionally provided with end-equipment control module (7), the end-equipment control module
(7) be internally provided with air switch DK2, button S2 and its normally closed contact S2-1, S2-2, S2-3, button T2 and its normally closed connect
Point T2-1, button T3 and its normally closed contact T3-1, button T4 and its normally closed contact T4-1；
The circuit structure of the end-equipment control module (7) are as follows: a termination mains supply firewire of the air switch DK2
End, the other end of the air switch DK2 and the one end for meeting button S2, one end of button T2, behind one end of button T3 with button
One end of T4 is connected, and the other end of the button S2 is sequentially connected in series contactor ZJ6 coil, normally closed contact T2-1, normally closed contact T3-
It is connected after 1 with one end of normally closed contact T4-1；
It is connected after the other end concatenation contactor ZJ3 coil of the button T2 with one end of normally closed contact S2-1；
It is connected after the other end concatenation contactor ZJ4 coil of the button T3 with one end of normally closed contact S2-2；
It is connected after the other end concatenation contactor ZJ5 coil of the button T4 with one end of normally closed contact S2-3；
The other end of the normally closed contact T4-1 and the other end for meeting normally closed contact S2-1, the other end of normally closed contact S2-2, often
The other end for closing contact S2-3 is followed by mains supply zero line side.
3. three-phase through-flow protective device according to claim 2, it is characterised in that: route beginning equipment (1) and line
Road end-equipment (2) is all set in shell, be provided on the surface of shell ammeter display screen, voltmeter display screen, by
Button and switch.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821193937.5U CN208459444U (en) | 2018-07-26 | 2018-07-26 | Three-phase through-flow protective device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821193937.5U CN208459444U (en) | 2018-07-26 | 2018-07-26 | Three-phase through-flow protective device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN208459444U true CN208459444U (en) | 2019-02-01 |
Family
ID=65178582
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201821193937.5U Active CN208459444U (en) | 2018-07-26 | 2018-07-26 | Three-phase through-flow protective device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN208459444U (en) |
-
2018
- 2018-07-26 CN CN201821193937.5U patent/CN208459444U/en active Active
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN108631311A (en) | A kind of communication base station for electric installation | |
| CN208459444U (en) | Three-phase through-flow protective device | |
| CN206002564U (en) | A kind of dielectric loss and insulation resistance test conversion equipment and pilot system | |
| CN108152779A (en) | Electronic current mutual inductor check system and method | |
| CN204789832U (en) | CVT high -voltage testing's line changing device and CVT high -voltage testing device | |
| CN103730879A (en) | Protection device for power utilization system of transformer substation | |
| CN206863201U (en) | A kind of transformer common test instrument comparison device for being applied to scene | |
| CN201663438U (en) | Two-port household appliance signal surge protective device irrespective of input and output | |
| Radulovic et al. | Influence of combination wave generator's current undershoot on overvoltage protective characteristics | |
| CN208112265U (en) | charger protection circuit and charger | |
| CN203259547U (en) | Wiring board for high-voltage electric test of transformer | |
| CN206541730U (en) | Unbalanced type three-phase coenosarc once through-flow pressure build-up test transformer | |
| CN109283437A (en) | PT broken string and singlephase earth fault simulator and method | |
| CN204882693U (en) | Trip protections equipment and electroscope thereof | |
| CN211743552U (en) | American case becomes inlet wire cable earthing device | |
| CN204377325U (en) | Interference prevention device and system thereof | |
| CN203660505U (en) | Electric system protection device for transformer substation | |
| CN207353825U (en) | A kind of hand-held reactor protection device | |
| CN102110975A (en) | Microcomputer monitoring motor protector | |
| CN202815071U (en) | High-voltage live detection indication system | |
| CN205301429U (en) | Intelligent substation presses and becomes automatic nuclear phase ware of secondary | |
| CN202206133U (en) | Lightning protection isolator for direct-to-home signal line and power socket with same | |
| CN201813031U (en) | Protection type plug board | |
| CN205724871U (en) | Three phase mains signal shares surge protector | |
| CN205958636U (en) | Put small -size circuit voltage acquisition device of cabinet in distributed generator circuit |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |