CN204720060U - A kind of low voltage electric energy measure device is installed and test training device - Google Patents
A kind of low voltage electric energy measure device is installed and test training device Download PDFInfo
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- CN204720060U CN204720060U CN201520327769.4U CN201520327769U CN204720060U CN 204720060 U CN204720060 U CN 204720060U CN 201520327769 U CN201520327769 U CN 201520327769U CN 204720060 U CN204720060 U CN 204720060U
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- 238000012549 training Methods 0.000 title claims abstract description 104
- 238000012360 testing method Methods 0.000 title claims abstract description 25
- 238000012795 verification Methods 0.000 claims abstract description 4
- 238000000819 phase cycle Methods 0.000 abstract description 12
- 238000009530 blood pressure measurement Methods 0.000 abstract description 5
- 238000004088 simulation Methods 0.000 abstract description 3
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- 229910000906 Bronze Inorganic materials 0.000 description 7
- 239000010974 bronze Substances 0.000 description 7
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- 230000005611 electricity Effects 0.000 description 5
- 238000005516 engineering process Methods 0.000 description 4
- 230000006870 function Effects 0.000 description 3
- 238000009434 installation Methods 0.000 description 3
- 238000012986 modification Methods 0.000 description 3
- 230000004048 modification Effects 0.000 description 3
- 238000012857 repacking Methods 0.000 description 3
- 230000008859 change Effects 0.000 description 2
- 238000004804 winding Methods 0.000 description 2
- 230000015556 catabolic process Effects 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- PCHJSUWPFVWCPO-UHFFFAOYSA-N gold Chemical compound [Au] PCHJSUWPFVWCPO-UHFFFAOYSA-N 0.000 description 1
- 239000010931 gold Substances 0.000 description 1
- 229910052737 gold Inorganic materials 0.000 description 1
- 230000036541 health Effects 0.000 description 1
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Abstract
The utility model relates to a kind of low voltage electric energy measure device and installs and test training device, comprise PLC, virtual power supply and low-voltage electric energy metering table, failure classes training Current Transformer analogue means is provided with between the current output terminal of described virtual power supply and the current input terminal of low-voltage electric energy metering table, the terminal box with impedance fault analog functuion is provided with between the voltage output end of described virtual power supply and the voltage input end of low-voltage electric energy metering table, described PLC is for controlling failure classes training Current Transformer analogue means, and the terminal box with impedance fault analog functuion carries out fault verification.It has various fault simulation, can carry out secondary pressure measurement and fall setting, current transformer polarity set, phase sequence setting.
Description
Technical field
The utility model relates to a kind of instructional device of power industry educational training, and particularly a kind of low voltage electric energy measure device is installed and test training device.
Background technology
Send out in electric system, supply, in the links of electricity consumption, installed a large amount of electric power meters.Be used for measuring generated energy, station-service electricity, delivery, electricity sales amount etc.Electric power meter comprises all kinds electric energy meter, metering voltage, current transformer and secondary circuit thereof, electric energy metering cabinet (case) etc.Existing low-voltage electric energy metering is installed, first test training is normally carried out explaining in conjunction with means such as picture, film, ppT, then carry out the mode watched, teach to student install about low-voltage electric energy metering, the knowledge such as the principle of test and operation.But for electrical equipments such as low-voltage electric energy metering installation, tests, explain and view and emulate the result of training played very limited, student does not know the consequence having what phenomenon and bring under each fault, and be difficult to allow student grasp thoroughly low-voltage electric energy metering installed, the operation of test and its principle of profound understanding thereof.
Utility model content
The purpose of this utility model is the deficiency existed for prior art, provides a kind of low voltage electric energy measure device to install and test training device, has various fault simulation, can carry out secondary pressure measurement and fall setting, current transformer polarity set, phase sequence setting.
The purpose of this utility model is achieved in that a kind of low voltage electric energy measure device is installed and test training device, comprise PLC, virtual power supply and low-voltage electric energy metering table, failure classes training Current Transformer analogue means is provided with between the current output terminal of described virtual power supply and the current input terminal of low-voltage electric energy metering table, the terminal box with impedance fault analog functuion is provided with between the voltage output end of described virtual power supply and the voltage input end of low-voltage electric energy metering table, described PLC is for controlling failure classes training Current Transformer analogue means, and the terminal box with impedance fault analog functuion carries out fault verification.
Polarity set trouble spot is provided with in described failure classes training Current Transformer analogue means.
Described failure classes training Current Transformer analogue means comprises low-voltage current mutual inductor shell, current transformer is provided with in described low-voltage current mutual inductor shell, tenth A.C. contactor (JK10), first A.C. contactor (JK1), the first primary side wiring interface on described low-voltage current mutual inductor shell is connected with the second primary side wiring interface through the normally closed contact of the tenth A.C. contactor, first primary side wiring interface P1 of described low-voltage current mutual inductor shell is connected with the first primary side p1 of current transformer through the first normally opened contact of the tenth A.C. contactor, second primary side wiring interface of described low-voltage current mutual inductor shell is connected with the second primary side p2 of current transformer through the second normally opened contact of the tenth A.C. contactor, first secondary side wiring interface of low-voltage current mutual inductor shell is connected with the first secondary side s1 of current transformer through the first normally opened contact of the first A.C. contactor, first secondary side wiring interface of low-voltage current mutual inductor shell is connected with the second secondary side s2 of current transformer through the first normally closed contact of the first A.C. contactor, second secondary side wiring interface of low-voltage current mutual inductor shell is connected with the second secondary side s2 of current transformer through the second normally opened contact of the first A.C. contactor, second secondary side wiring interface of low-voltage current mutual inductor shell is connected with the first secondary side s1 of current transformer through the second normally closed contact of the first A.C. contactor.
Also comprise dress table class training Current Transformer analogue means, described dress table class training Current Transformer analogue means comprises low-voltage current mutual inductor shell, 11 A.C. contactor and be positioned at the current transformer of low-voltage current mutual inductor shell, the first primary side wiring interface P1 on described low-voltage current mutual inductor shell is connected with the second primary side wiring interface P2 through the normally closed contact of the 11 A.C. contactor, first primary side wiring interface (P1) of described low-voltage current mutual inductor shell is connected with first primary side (p1) of current transformer through the first normally opened contact of the 11 A.C. contactor, second primary side wiring interface of described low-voltage current mutual inductor shell is connected with second primary side (p2) of current transformer through the second normally opened contact of the 11 A.C. contactor, two secondary side wiring interfaces of described low-voltage current mutual inductor shell respectively with two secondary side (s1 of current transformer, s2) connect, 11 A.C. contactor is electrically connected with PLC, described PLC is for controlling energising or the power-off of the 11 A.C. contactor.
The primary side of described dress table class training Current Transformer analogue means is connected between two current output terminals of each phase of virtual power supply with the primary side of failure classes training Current Transformer analogue means.
The carrying out end of described terminal box designs wired impedance fault with leading-out terminal.
The voltage end of incoming cables of described terminal box is connected with the voltage output end of virtual power supply, the voltage leading-out terminal of described terminal box is connected with the voltage input end of low-voltage electric energy metering table, auxiliary reclay between the voltage end of incoming cables of described terminal box and voltage leading-out terminal, resistance, the normally closed contact of auxiliary reclay is connected between the end of incoming cables of terminal box and leading-out terminal, the normally opened contact of auxiliary reclay is in series with a resistor rear in parallel with its normally closed contact, the electric current end of incoming cables of described terminal box is connected with the second secondary side wiring interface of low-voltage current mutual inductor shell, the current outlet end of described terminal box is connected with the current input terminal of low-voltage electric energy metering table, A.C. contactor between the electric current end of incoming cables of described terminal box and current outlet end, resistance, the normally closed contact of A.C. contactor is connected between the end of incoming cables of terminal box and leading-out terminal, the normally opened contact of A.C. contactor is in series with a resistor rear in parallel with its normally closed contact, auxiliary reclay, A.C. contactor is all connected with PLC.
The end of incoming cables of described virtual power supply is connected with power inleting terminal, and the leading-out terminal of virtual power supply is connected with the primary side wiring interface on low-voltage current mutual inductor shell, low voltage voltage transformer casing respectively.
Be in series with scram button and auxiliary reclay (J20) between the end of incoming cables of described virtual power supply and power inleting terminal, auxiliary reclay (J20) is connected with PLC.
Adopt such scheme, the utility model is had the following advantages: because low voltage electric energy measure device of the present utility model is installed and test training device, comprise PLC, virtual power supply and low-voltage electric energy metering table, the current output terminal of described virtual power supply is connected through the current input terminal of low-voltage current mutual inductor analogue means with low-voltage electric energy metering table, and the voltage output end of described virtual power supply is connected with the voltage input end of low-voltage electric energy metering table.Terminal box is provided with between the voltage output end of described virtual power supply and low-voltage electric energy metering table.Low-voltage current mutual inductor analogue means, terminal box have various fault simulation, secondary pressure measurement can be carried out and fall setting, current transformer polarity set, phase sequence setting etc., the utility model can be met needs that dress table connects the relevant work posts such as electric real training, current transformer test training, phase sequence negative pressure real training, low-voltage electrical safe distance real training and management training, examination and technical appraisement.Be practiced as emphasis form of teaching because this patent can meet with real training, make student can understand electrical safety knowledge completely, real grasp electrical safety technology, the life security during guarantee student works afterwards and health.Improve the performance of enterprises, improve safety, the stable operation level of electrical network.
This actual training device based on various electrical safety rudimentary knowledge, apply current advanced person electric, electronic technology and develop integrate training and learning, actual training device that theoretical validation, practical operation, examination are identified.
Below in conjunction with drawings and Examples, the utility model is described in further detail.
Accompanying drawing explanation
Fig. 1 is the main circuit diagram of low voltage electric energy measure device of the present utility model installation and test training device;
Fig. 1 a is the P portion enlarged drawing of Fig. 1;
Fig. 2 is the wiring schematic diagram of U phase fault class training Current Transformer analogue means of the present utility model, dress table class training Current Transformer analogue means;
Fig. 3 is the wiring schematic diagram of V phase fault class training Current Transformer analogue means of the present utility model, dress table class training Current Transformer analogue means;
Fig. 4 is the wiring schematic diagram of W phase fault class training Current Transformer analogue means of the present utility model, dress table class training Current Transformer analogue means;
The schematic diagram of Fig. 5 failure classes training of the present utility model Current Transformer analogue means;
The schematic diagram of Fig. 6 dress table of the present utility model class training Current Transformer analogue means;
Fig. 7 is the back panel wiring schematic diagram of terminal box of the present utility model;
Fig. 8 is the schematic diagram that virtual power supply of the present utility model controls;
Fig. 9 is the schematic diagram that PLC of the present utility model controls.
Embodiment
See Fig. 1 to Fig. 9, a kind of low voltage electric energy measure device is installed and test training device, comprises PLC, virtual power supply and low-voltage electric energy metering table.The virtual power supply of the present embodiment adopts ZX5050 type three-phase program-controlled precision measurement power supply.Failure classes training Current Transformer analogue means is equipped with between each phase current output terminal of described virtual power supply and the current input terminal of low-voltage electric energy metering table.Failure classes training Current Transformer analogue means is arranged on and is drained through class training face.Be provided with the terminal box with impedance fault analog functuion between the voltage output end of described virtual power supply and the voltage input end of low-voltage electric energy metering table, described PLC carries out fault verification for the terminal box controlling failure classes training Current Transformer analogue means and have an impedance fault analog functuion.This device can be arranged on a cabinet.
Polarity set trouble spot is provided with in described failure classes training Current Transformer analogue means.Described failure classes training Current Transformer analogue means comprises low-voltage current mutual inductor shell, is provided with current transformer, the tenth A.C. contactor (JK10), the first A.C. contactor (JK1) in described low-voltage current mutual inductor shell.Described current transformer is low-voltage current mutual inductor, supporting with low-voltage current mutual inductor shell.The first primary side wiring interface on described low-voltage current mutual inductor shell is connected with the second primary side wiring interface through the normally closed contact of the tenth A.C. contactor, first primary side wiring interface P1 of described low-voltage current mutual inductor shell is connected with the first primary side p1 of current transformer through the first normally opened contact of the tenth A.C. contactor, second primary side wiring interface of described low-voltage current mutual inductor shell is connected with the second primary side p2 of current transformer through the second normally opened contact of the tenth A.C. contactor, first secondary side wiring interface of low-voltage current mutual inductor shell is connected with the first secondary side s1 of current transformer through the first normally opened contact of the first A.C. contactor, first secondary side wiring interface of low-voltage current mutual inductor shell is connected with the second secondary side s2 of current transformer through the first normally closed contact of the first A.C. contactor, second secondary side wiring interface of low-voltage current mutual inductor shell is connected with the second secondary side s2 of current transformer through the second normally opened contact of the first A.C. contactor, second secondary side wiring interface of low-voltage current mutual inductor shell is connected with the first secondary side s1 of current transformer through the second normally closed contact of the first A.C. contactor.It is the best that current transformer and the tenth A.C. contactor (JK10), the first A.C. contactor (JK1) are all arranged on effect in low-voltage current mutual inductor shell.
This actual training device also comprises dress table class training Current Transformer analogue means, is arranged on dress table class training face.Described dress table class training Current Transformer analogue means comprises low-voltage current mutual inductor shell, 11 A.C. contactor and be positioned at the current transformer of low-voltage current mutual inductor shell, the first primary side wiring interface P1 on described low-voltage current mutual inductor shell is connected with the second primary side wiring interface P2 through the normally closed contact of the 11 A.C. contactor, first primary side wiring interface (P1) of described low-voltage current mutual inductor shell is connected with first primary side (p1) of current transformer through the first normally opened contact of the 11 A.C. contactor, second primary side wiring interface of described low-voltage current mutual inductor shell is connected with second primary side (p2) of current transformer through the second normally opened contact of the 11 A.C. contactor, two secondary side wiring interfaces of described low-voltage current mutual inductor shell respectively with two secondary side (s1 of current transformer, s2) connect, 11 A.C. contactor is electrically connected with PLC, described PLC is for controlling energising or the power-off of the 11 A.C. contactor.It is the best that current transformer and the 11 A.C. contactor are all arranged on effect in low-voltage current mutual inductor shell.
The primary side of described dress table class training Current Transformer analogue means is connected between two current output terminals of each phase of virtual power supply with the primary side of failure classes training Current Transformer analogue means.
The A phase current positive output end of described virtual power supply is connected with the first primary side wiring interface of Fisrt fault class training Current Transformer analogue means TA1, the second primary side wiring interface and first of described Fisrt fault class training Current Transformer analogue means TA1 fills the first primary side wiring interface showing class training Current Transformer analogue means TA4 and is connected, the second primary side wiring interface of the first dress table class training Current Transformer analogue means TA4 is connected with the A phase current negative output terminal of virtual power supply, the secondary side wiring interface of Fisrt fault class training Current Transformer analogue means TA1 connects low-voltage electric energy metering table through terminal box.The B phase current positive output end of described virtual power supply is connected with the first primary side wiring interface of the second failure classes training Current Transformer analogue means TA2, the second primary side wiring interface and second of described second failure classes training Current Transformer analogue means TA2 fills the first primary side wiring interface showing class training Current Transformer analogue means TA5 and is connected, the second primary side wiring interface of the second dress table class training Current Transformer analogue means TA5 is connected with the B phase current negative output terminal of virtual power supply, the secondary side wiring interface of the second failure classes training Current Transformer analogue means TA2 connects low-voltage electric energy metering table through terminal box.The C phase current positive output end of described virtual power supply is connected with the first primary side wiring interface of the 3rd failure classes training Current Transformer analogue means TA3, the second primary side wiring interface and the 3rd of described 3rd failure classes training Current Transformer analogue means TA3 fills the first primary side wiring interface showing class training Current Transformer analogue means TA6 and is connected, the second primary side wiring interface of the 3rd dress table class training Current Transformer analogue means TA6 is connected with the C phase current negative output terminal of virtual power supply, the secondary side wiring interface of the 3rd failure classes training Current Transformer analogue means TA3 connects low-voltage electric energy metering table through terminal box.
This electric energy metrical installation testing actual training device has and is drained through class training, the training of dress table class.This actual training device is provided with dress table class training face and is drained through class training face.How it is how to fix a breakdown owing to needing teacher to teach student on this equipment that setting is drained through class training face, wiring.Arranging dress table class training face is because teacher teaches students' union, needs student on this face, start wiring.Failure classes training face needs to train the wrong connection that may occur in the wiring of student's various dress table, and the line in dress table class training face is that student oneself connects entirely, and being does not need fault.TA1, TA2, TA3 are the failure classes training Current Transformer analogue means be drained through on class training face, and TA4, TA5 and TA6 are the dress table class training Current Transformer analogue means on dress table class training face.The A phase current of virtual power supply, after the P1 of TA1, is received on the P1 of TA3 at the P2 by TA1, gets back on virtual power supply at the P2 by TA3, and the secondary of TA1 is surveyed and received in terminal box, and B, C phase of virtual power supply is same principle with A phase.
After reequiping low-voltage current mutual inductor, low-voltage current mutual inductor can be allowed to meet reality.After reequiping inside low-voltage current mutual inductor, the function required for this actual training device can be realized, low-voltage current mutual inductor once survey P1 through JK A.C. contactor often open with normally closed point after, not opening A.C. contactor can make low-voltage current mutual inductor P1 and P2 communicate, but low-voltage current mutual inductor secondary is surveyed does not have electric current, after opening A.C. contactor JK, low-voltage current mutual inductor P1 and P2 can be made to communicate, low-voltage current mutual inductor secondary is surveyed has electric current to export.
See Fig. 7, the carrying out end of described terminal box designs wired impedance fault with leading-out terminal.U, V, W, N phase voltage end of described virtual power supply is connected respectively bus bar, bus bar is respectively equipped with U phase current mutual inductor, V phase current mutual inductor, W phase current mutual inductor.The voltage end of incoming cables of described terminal box is connected with the voltage output end of virtual power supply.The voltage end of incoming cables of described terminal box is connected respectively the primary side p1 of U phase current mutual inductor, V phase current mutual inductor, W phase current mutual inductor.The voltage leading-out terminal of described terminal box is connected with the voltage input end of low-voltage electric energy metering table.Auxiliary reclay, resistance between the voltage end of incoming cables of described terminal box and voltage leading-out terminal, the normally closed contact of auxiliary reclay is connected between the end of incoming cables of terminal box and leading-out terminal, and the normally opened contact of auxiliary reclay is in series with a resistor rear in parallel with its normally closed contact.The electric current end of incoming cables of described terminal box is connected with the second secondary side wiring interface of low-voltage current mutual inductor shell.The electric current end of incoming cables of described terminal box is connected respectively the secondary side of U phase current mutual inductor, V phase current mutual inductor, W phase current mutual inductor, and the secondary side correspondence of U phase current mutual inductor, V phase current mutual inductor, W phase current mutual inductor connects low-voltage current mutual inductor analogue means.The current outlet end of described terminal box is connected with the current input terminal of low-voltage electric energy metering table, A.C. contactor, resistance between the electric current end of incoming cables of described terminal box and current outlet end, the normally closed contact of A.C. contactor is connected between the end of incoming cables of terminal box and leading-out terminal, the normally opened contact of A.C. contactor is in series with a resistor rear in parallel with its normally closed contact, and auxiliary reclay, A.C. contactor are all connected with PLC.
Wired impedance fault is designed according to the end of incoming cables of terminal box and leading-out terminal, same first end of incoming cables of terminal box and leading-out terminal centre are through the first relay, through auxiliary reclay in the middle of when end of incoming cables and leading-out terminal are superpotential, through A.C. contactor in the middle of during electric current, the auxiliary reclay of process or the normally opened contact of A.C. contactor are contacted the first resistance therebetween, wired resistive fault that Here it is.
Power supply due to this device is that virtual power supply is powered, and electric current and the voltage of virtual power supply are what to separate, in order to realize simulating reality, and to bronze medal (wire) through row repacking.
The repacking principle of bronze medal: the voltage and current exported to allow virtual power supply is combined, simulate the single line output voltage in reality and electric current, thus the repacking of bronze medal is exactly that two onesize bronze medals were combined through adding, requirement is that the bronze medal be combined can not communicate, although thus this actual training device electric current is walked together with voltage, they can not disturb mutually.
Processing: add insulation gold paper in the middle of two onesize bronze medals, then through fining-off, two bronze medals are forced together, they can not be dropped, allows them not communicate simultaneously.
The start and stop programmable controller (PLC) controlling virtual power supply controls, and centre is provided with suddenly stops protection power source.See Fig. 8, the end of incoming cables of described virtual power supply is connected with power inleting terminal, and the leading-out terminal of virtual power supply is connected with the primary side wiring interface on low-voltage current mutual inductor shell, low voltage voltage transformer casing respectively.Be in series with scram button and auxiliary reclay (J20) between the end of incoming cables of described virtual power supply and power inleting terminal, auxiliary reclay (J20) is connected with PLC.
To control the start and stop of virtual power supply be that in the middle of electric power incoming line terminal by this device, series winding is anxious stops and J20(auxiliary reclay) normal battle after, on the input terminal receiving virtual power supply, this actual training device up-set condition can be run into like this can press anxious stopping and close virtual power supply, in case virtual power supply damages, series winding J20(auxiliary reclay) in the start and stop by programmable device (PLC) control J20, thus real training opertaing device power supply on computers.The power inleting terminal sub-connection external power supply of this device.
What in Fig. 9, PLC HOsT represented is PLC programmable device main frame, what PLC CTTp represented is PLC programmable device supplementary module, PLC programmable device controls coil electricity or the power-off of auxiliary reclay J1-J19, auxiliary reclay J5-J19 control contactor JK1-JK15 coil electricity or power-off.Real training the running status of opertaing device can be being carried out by computing machine, for real training provides convenient by PLC programmable device and computer communication.
Fault inside this device has secondary pressure measurement to fall setting, is respectively pressure-wire and current line pressure drop.
Pressure-wire: pressure-wire pressure drop with or without, U phase, V phase, W phase, N, can select as requested, as the pressure drop setting during which needs mutually, to select nothing when every needs mutually during pressure drop, expression be set without pressure drop.
Current line: current line pressure drop with or without, Ia enters, Ia goes out, Ib enters, Ib goes out, Ic enters, Ic goes out, can select as requested, as the pressure drop setting during which needs mutually, to select nothing when every needs mutually during pressure drop, expression be set without pressure drop.
Current transformer polarity set, is respectively positive polarity and negative polarity.
Positive polarity: U-just, V-just, W-just, when needs low-voltage electric energy metering installation-test training screen normally run time, just select this.
Negative polarity: U-is negative, V-is negative, W-bears, and when needs negative polarity is tested, arranges the polarity of needs as requested.
Phase sequence sets, in phase sequence setting, have phase three-wire three positive phase sequence, phase three-wire three negative phase sequence, three-phase and four-line positive phase sequence, three-phase and four-line negative phase sequence, the phase sequence required for being set by virtual power supply as requested.
The foregoing is only preferred embodiment of the present utility model, be not limited to the utility model, auxiliary reclay, A.C. contactor can substitute with the switch with identical function, the setting form of fault is also not only confined to above-described embodiment, when realizing same function (setting, current transformer polarity set, phase sequence setting etc. fall in secondary pressure measurement), concrete connected mode can carry out simple variant, obviously, those skilled in the art can carry out various change and modification to the utility model and not depart from spirit and scope of the present utility model.Like this, if these amendments of the present utility model and modification belong within the scope of the utility model claim and equivalent technologies thereof, then the utility model is also intended to comprise these change and modification.
Claims (9)
1. a low voltage electric energy measure device is installed and test training device, it is characterized in that: comprise PLC, virtual power supply and low-voltage electric energy metering table, failure classes training Current Transformer analogue means is provided with between the current output terminal of described virtual power supply and the current input terminal of low-voltage electric energy metering table, the terminal box with impedance fault analog functuion is provided with between the voltage output end of described virtual power supply and the voltage input end of low-voltage electric energy metering table, described PLC carries out fault verification for the terminal box controlling failure classes training Current Transformer analogue means and have an impedance fault analog functuion.
2. low voltage electric energy measure device according to claim 1 is installed and test training device, it is characterized in that: be provided with polarity set trouble spot in described failure classes training Current Transformer analogue means.
3. low voltage electric energy measure device according to claim 2 is installed and test training device, it is characterized in that: described failure classes training Current Transformer analogue means comprises low-voltage current mutual inductor shell, current transformer is provided with in described low-voltage current mutual inductor shell, tenth A.C. contactor (JK10), first A.C. contactor (JK1), the first primary side wiring interface on described low-voltage current mutual inductor shell is connected with the second primary side wiring interface through the normally closed contact of the tenth A.C. contactor, first primary side wiring interface (P1) of described low-voltage current mutual inductor shell is connected with first primary side (p1) of current transformer through the first normally opened contact of the tenth A.C. contactor, second primary side wiring interface of described low-voltage current mutual inductor shell is connected with second primary side (p2) of current transformer through the second normally opened contact of the tenth A.C. contactor, first secondary side wiring interface of low-voltage current mutual inductor shell is connected with first secondary side (s1) of current transformer through the first normally opened contact of the first A.C. contactor, first secondary side wiring interface of low-voltage current mutual inductor shell is connected with second secondary side (s2) of current transformer through the first normally closed contact of the first A.C. contactor, second secondary side wiring interface of low-voltage current mutual inductor shell is connected with second secondary side (s2) of current transformer through the second normally opened contact of the first A.C. contactor, second secondary side wiring interface of low-voltage current mutual inductor shell is connected with first secondary side (s1) of current transformer through the second normally closed contact of the first A.C. contactor.
4. low voltage electric energy measure device according to claim 1 is installed and test training device, it is characterized in that: also comprise dress table class training Current Transformer analogue means, described dress table class training Current Transformer analogue means comprises low-voltage current mutual inductor shell, 11 A.C. contactor (JK11) and be positioned at the current transformer of low-voltage current mutual inductor shell, the first primary side wiring interface (P1) on described low-voltage current mutual inductor shell is connected with the second primary side wiring interface P2 through the normally closed contact of the 11 A.C. contactor, first primary side wiring interface (P1) of described low-voltage current mutual inductor shell is connected with first primary side (p1) of current transformer through the first normally opened contact of the 11 A.C. contactor, second primary side wiring interface of described low-voltage current mutual inductor shell is connected with second primary side (p2) of current transformer through the second normally opened contact of the 11 A.C. contactor, two secondary side wiring interfaces of described low-voltage current mutual inductor shell respectively with two secondary side (s1 of current transformer, s2) connect, 11 A.C. contactor is electrically connected with PLC, described PLC is for controlling energising or the power-off of the 11 A.C. contactor.
5. low voltage electric energy measure device according to claim 4 is installed and test training device, it is characterized in that: the primary side of described dress table class training Current Transformer analogue means is connected between two current output terminals of each phase of virtual power supply with the primary side of failure classes training Current Transformer analogue means.
6. low voltage electric energy measure device according to claim 1 is installed and test training device, it is characterized in that: the carrying out end of described terminal box designs wired impedance fault with leading-out terminal.
7. low voltage electric energy measure device according to claim 6 is installed and test training device, it is characterized in that: the voltage end of incoming cables of described terminal box is connected with the voltage output end of virtual power supply, the voltage leading-out terminal of described terminal box is connected with the voltage input end of low-voltage electric energy metering table, auxiliary reclay between the voltage end of incoming cables of described terminal box and voltage leading-out terminal, resistance, the normally closed contact of auxiliary reclay is connected between the end of incoming cables of terminal box and leading-out terminal, the normally opened contact of auxiliary reclay is in series with a resistor rear in parallel with its normally closed contact, the electric current end of incoming cables of described terminal box is connected with the second secondary side wiring interface of low-voltage current mutual inductor shell, the current outlet end of described terminal box is connected with the current input terminal of low-voltage electric energy metering table, A.C. contactor between the electric current end of incoming cables of described terminal box and current outlet end, resistance, the normally closed contact of A.C. contactor is connected between the end of incoming cables of terminal box and leading-out terminal, the normally opened contact of A.C. contactor is in series with a resistor rear in parallel with its normally closed contact, auxiliary reclay, A.C. contactor is all connected with PLC.
8. low voltage electric energy measure device according to claim 1 is installed and test training device, it is characterized in that: the end of incoming cables of described virtual power supply is connected with power inleting terminal, the leading-out terminal of virtual power supply is connected with the primary side wiring interface on low-voltage current mutual inductor shell, low voltage voltage transformer casing respectively.
9. low voltage electric energy measure device according to claim 8 is installed and test training device, it is characterized in that: be in series with scram button and auxiliary reclay (J20) between the end of incoming cables of described virtual power supply and power inleting terminal, auxiliary reclay (J20) is connected with PLC.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104794968A (en) * | 2015-05-20 | 2015-07-22 | 国家电网公司 | Low-voltage electric energy measuring, mounting and connection analyzing comprehensive practical training device |
| CN106023748A (en) * | 2016-06-21 | 2016-10-12 | 国网浙江省电力公司培训中心 | Low-voltage metering training device |
| CN108777089A (en) * | 2018-06-08 | 2018-11-09 | 国家电网有限公司 | A kind of correct errors with wiring connects electric training system with the dress table of fabrication evaluation |
| CN109493673A (en) * | 2018-12-14 | 2019-03-19 | 国家电网有限公司 | Electric energy metering device wiring is just misidentifying training evaluation system |
| CN113451961A (en) * | 2021-07-19 | 2021-09-28 | 广东电网有限责任公司 | Terminal box |
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2015
- 2015-05-20 CN CN201520327769.4U patent/CN204720060U/en active Active
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104794968A (en) * | 2015-05-20 | 2015-07-22 | 国家电网公司 | Low-voltage electric energy measuring, mounting and connection analyzing comprehensive practical training device |
| CN104794968B (en) * | 2015-05-20 | 2018-03-13 | 国家电网公司 | Low-voltage electric energy metering is installed and wiring analysis comprehensive training device |
| CN106023748A (en) * | 2016-06-21 | 2016-10-12 | 国网浙江省电力公司培训中心 | Low-voltage metering training device |
| CN108777089A (en) * | 2018-06-08 | 2018-11-09 | 国家电网有限公司 | A kind of correct errors with wiring connects electric training system with the dress table of fabrication evaluation |
| CN108777089B (en) * | 2018-06-08 | 2024-03-01 | 国家电网有限公司 | Meter-loading electricity-connection training system with wiring correction and process detection |
| CN109493673A (en) * | 2018-12-14 | 2019-03-19 | 国家电网有限公司 | Electric energy metering device wiring is just misidentifying training evaluation system |
| CN113451961A (en) * | 2021-07-19 | 2021-09-28 | 广东电网有限责任公司 | Terminal box |
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