CN209358246U - Low current is used to simulate the device of power transmission for supply main - Google Patents
Low current is used to simulate the device of power transmission for supply main Download PDFInfo
- Publication number
- CN209358246U CN209358246U CN201822190413.7U CN201822190413U CN209358246U CN 209358246 U CN209358246 U CN 209358246U CN 201822190413 U CN201822190413 U CN 201822190413U CN 209358246 U CN209358246 U CN 209358246U
- Authority
- CN
- China
- Prior art keywords
- switch
- power transmission
- supply main
- low current
- frequency converter
- 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
Landscapes
- Stand-By Power Supply Arrangements (AREA)
Abstract
The device that the utility model uses low current to simulate power transmission for supply main includes: battery；Inverter, inverter are connected to battery；Frequency converter, frequency converter are connected to inverter by first switch；Second switch, second switch are change-over switch, and the input terminal of second switch is connected to frequency converter by third switch, and the output end of second switch is equipped with a main contacts and three auxiliary contacts；For connecting three indicating devices of supply main, the first end of three indicating devices is connected to three auxiliary contacts one to one.By using the utility model, simulation power transmission can be carried out before sending formal electricity, to detect to cable or bus, subsequent handling can be made preposition, carry out commissioning test in advance, the device is simple and convenient, can effectively shorten the duration, improve efficiency.
Description
Technical field
The utility model relates to building electric engineering fields, and in particular to a kind of that low current is used to send for supply main simulation
The device of electricity.
Background technique
After building electric engineering installation, generally require to carry out supply main cable, bus and distribution box (cabinet)
Commissioning test is to determine whether engineering meets prescribed requirement, if can lead to formal electricity and put into operation.In previous engineering, often
Often need etc. formally be electrically accessed after can be tested, centre have one section of cycle in time can not utilize and test job need to spend compared with
More times carry out, and cause time waste, delay construction progress.
Therefore, it is necessary to provide a kind of scheme, solve the problems, such as just carry out commissioning test after must being formally electrically accessed.
Utility model content
Just wasting, dragging to solve the time caused by can carrying out commissioning test after must being formally electrically accessed in the prior art
The problem of prolonging construction progress, the utility model provide a kind of device for using low current to simulate power transmission for supply main.
The device provided by the utility model for using low current to simulate power transmission for supply main, comprising:
Battery；
Inverter, the inverter are connected to the battery；
Frequency converter, the frequency converter are connected to the inverter by first switch；
Second switch, the second switch are change-over switch, and the input terminal of the second switch is switched by third to be connected
A main contacts and three auxiliary contacts are equipped in the output end of the frequency converter, the second switch；
For connecting three indicating devices of supply main, the first end of three indicating devices is connected to three one to one
A auxiliary contact.
By using the utility model, simulation power transmission can be carried out before sending formal electricity, to examine to cable or bus
Survey, subsequent handling can be made preposition, carry out commissioning test in advance, the device is simple and convenient, can effectively shorten the duration, improve efficiency.
The utility model use low current for supply main simulate power transmission device further improvement lies in that, described first
Switch is change-over switch, and the input terminal of the first switch is switchably connected to single-phase alternating current or the inverter, described the
The output end of one switch is connected to the frequency converter.
The utility model use low current for supply main simulate power transmission device further improvement lies in that, the third
Switch is change-over switch, and the input terminal of third switch is switchably connected to three-phase mains or the frequency converter, described the
The output end of three switches is connected to the input terminal of the second switch.
The utility model use low current for supply main simulate power transmission device further improvement lies in that, the secondary touching
Ammeter is connected between point and the first end of the indicating device.
The utility model uses low current to be for the further improvement of the device of supply main simulation power transmission, the electricity
Fuse is connected between flow table and the first end of the indicating device.
The utility model use low current for supply main simulate power transmission device further improvement lies in that, the electric power storage
Pond is 24V battery.
The utility model uses low current to be for the further improvement of the device of supply main simulation power transmission, the storage
Battery includes concatenated two pieces of 12V lead-acid accumulators.
The utility model use low current for supply main simulate power transmission device further improvement lies in that, further include shell
Body, the battery, the inverter, the frequency converter, the first switch, the second switch, the third switch and
The indicating device is respectively arranged in the shell, is set on the shell there are four electric connection, four electric connections connect respectively
Be connected to three indicating devices second end and the main contacts.
The utility model use low current for supply main simulate power transmission device further improvement lies in that, the instruction
Device is indicator light.
Detailed description of the invention
Fig. 1 be the utility model embodiment use low current for supply main simulate power transmission device structural representation
Figure.
Specific embodiment
Just wasting, dragging to solve the time caused by can carrying out commissioning test after must being formally electrically accessed in the prior art
The problem of prolonging construction progress, the utility model provide a kind of device for using low current to simulate power transmission for supply main.
Use low current for the dress of supply main simulation power transmission the utility model in the following with reference to the drawings and specific embodiments
It sets and is described further.Those skilled in the art can be understood easily its of the utility model by content disclosed by this specification
His advantage and effect.
As shown in connection with fig. 1, the utility model uses low current for the device of supply main simulation power transmission, comprising:
Battery 10；
Inverter 20, inverter 20 are connected to battery 10；
Frequency converter 30, frequency converter 30 are connected to inverter 20 by first switch；
Second switch, second switch are change-over switch, and the input terminal of second switch is connected to frequency converter by third switch
30, the output end of second switch is equipped with a main contacts and three auxiliary contacts；
For connecting three indicating devices of supply main, the first end of three indicating devices is connected to three pairs one to one
Contact.
In the utility model, battery 10 supplies direct current, and direct current is converted to alternating current 220V single-phase electricity by inverter 20,
Alternating current 220V single-phase electricity is converted to 380V three-phase electricity by frequency converter 30, and frequency converter 30 is followed by second switch, and second switch is connected to
Indicating device.In use, the first end of zero curve is connected to main contacts, the first end of three-phase cable to be measured is connected to
Three auxiliary contacts are arranged the zero terminal that the second end of zero curve is connected to distribution box 50, by the second end of three-phase cable to be measured
It is connected to the three-phase electricity terminal block of distribution box 50, starting uses low current to simulate the device of power transmission for supply main, observes
Whether meeting the requirements for three-phase cable simultaneously judged for the working condition of indicating device.
Further, first switch is change-over switch, the input terminal of first switch be switchably connected to single-phase alternating current or
Inverter 20, the output end of first switch are connected to frequency converter 30.
In the present embodiment, by first switch, frequency converter 30 may connect to inverter 20, battery 10, by inverter 20
The electric energy that battery 10 provides is converted into alternating current 220V single-phase electricity and is supplied to frequency converter 30；Frequency converter 30 can also pass through first
Switch is directly connected in single-phase alternating current, directly provides alternating current 220V single-phase electricity to frequency converter 30 from single-phase alternating current.According to live real
Border situation selects inverter 20 or single-phase alternating current using first switch.
Further, third switch be change-over switch, third switch input terminal be switchably connected to three-phase mains or
The output end of frequency converter 30, third switch is connected to the input terminal of second switch.
It in the present embodiment, is switched by third, second switch may connect to frequency converter 30, what reception was provided by frequency converter 30
380V three-phase electricity；Second switch can also be directly connected in three-phase mains by first switch, directly be opened from three-phase mains to second
It closes and exchange 380V three-phase electricity is provided.According to on-site actual situations, selection frequency converter 30 or three-phase mains are switched using third.
Further, ammeter is connected between auxiliary contact and the first end of indicating device.
In the present embodiment, electric current is no more than 2A in circuit, is low current, using ammeter real-time detection and observes circuit electricity
Stream, prevents electric current excessive.
Further, fuse is connected between ammeter and the first end of indicating device.
In the present embodiment, 2A fuse is set after ammeter, guarantees that the devices such as frequency converter 30 are not burnt out because electric current is excessive.
Further, battery 10 is 24V battery.Further, battery 10 includes concatenated two blocks of 12V plumbic acids
Battery.
It further, further include shell 40, battery 10, inverter 20, frequency converter 30, first switch, second switch,
Three switches and indicating device are respectively arranged in shell 40, are set on shell 40 there are four electric connection, four electric connections are connected to
The second end and main contacts of three indicating devices.
Further, indicating device is indicator light (a lamp, b lamp, c lamp).
In the present embodiment, three-phase cable and zero curve are directly connected in electric connection i.e. and may connect to simulation power transmission circuit.Preferably
Ground, shell 40 can be directly by storing when if you need to detect air-valve action situation equipped with the electric connection for being connected to 10 output end of battery
Battery 10 is connected to air-valve input terminal for DC24V voltage, by the electric connection, can be detected whether air-valve can work normally.
In the present embodiment, battery 10, inverter 20, frequency converter 30, first switch, second switch, third switch and refer to
Show that device is mounted in trolley case, is provided in series power supply by two pieces of 12V lead-acid accumulators；One inverter 20 can be by DC24V electricity
Pressure rises to AC220V；AC220V single-phase electricity can be transformed into 380V three-phase electricity by one frequency converter 30；After drawing three phase mains conducting wire
Connect quadrupole second switch, 3A indicator type current meter and 220V 15W incandescent lamp bulb (indicator light), device output 4 wire clamps of termination
(three-phase electricity and zero curve) is used to connect with the line nose of to be measured section of cable.It is right to observe three-phase cable (L1 line, L2 line and L3 line) institute
The three groups of indicator lights (a lamp, b lamp, c lamp) answered, which light situation and detect phase voltage respectively with linking probe, can determine cable under test
With the presence or absence of short circuit and breaking problem；It is existing to prevent from occurring in power transmission unexpected caused by cable short circuit or ground connection and tripping etc.
As.It is attached using crocodile wire clamp and to be measured section of cable, there is preferable portability, connection disassembling is convenient and safe and reliable.
In the present embodiment, it can be combined by battery 10 with inverter 20 and AC220V single-phase electricity is provided, as scene satisfies the requirements
Adjustable first switch is directly by single-phase mains-supplied.In the present embodiment, 380V three-phase electricity can be provided by 0.45KW frequency converter 30,
As scene satisfy the requirements also can adjust third switch directly powered by three-phase mains.
Three phase mains conducting wire is drawn after frequency converter 30 connects second switch, 3A indicator type current meter and 220V15W incandescent lamp bulb,
Electric current is no more than 2A in circuit, is low current, 2A fuse is arranged after ammeter, guarantee the devices such as frequency converter 30 not because of electric current mistake
It burns out greatly.
Three-phase cable (L1, L2, L3 line) can be connect respectively with linking probe at distribution box 50 with zero curve, instruction can be passed through
Lamp lights situation detection open circuit.L1 line is connect with linking probe with zero curve, is connect L2 line with zero curve with linking probe, is used
L3 line is connect by linking probe with zero curve.
Using the utility model carry out simulation power transmission concrete application during it is as follows:
Step 1: four groups of crocodile wire clamps of output end are connected on the line nose of to be measured section of cable (cable or bus)；To
It surveys the cable other side and accesses distribution box 50, three cable cores guarantee not to be connected to mutually and earth-free.
Step 2: closing the switch of operating circuit, and three groups of indicator lights of observation light situation, as a result will will appear following four
Situation:
1. wherein an indicator light is lighted, then prove that there are grounding phenomenons for that corresponding root cable of this indicator light.Reason is
Because grounding phenomenon occurs for single cable, indicator light voltage difference of the two ends is 220V, therefore indicator light can be lighted.
2. wherein two indicator lights are lighted, then proving this corresponding both threads cable of two indicator lights, there are phase faults to show
As.Reason is that phase fault phenomenon occurs because of both threads cable, and two each indicator light series voltages are line voltage 380V, because indicator light is
Same specification is identical with model resistance, therefore it is about 190V that each indicator light, which bears voltage, therefore two groups of indicator lights can light (but brightness
It can slightly reduce).
3. wherein three indicator lights are lighted, then prove that there are phase fault phenomenons for corresponding three cables of this three indicator lights
(such phenomenon probability of happening is very low), the same second situation of reason are no longer described in detail.
4. three indicator lights are non-lit up, then prove that this three cables are access or open circuit.
Indicator light lights situation and simulation power transmission result in one step 2 of table
| Indicator light lights situation | Simulate power transmission result |
| Only a lamp is bright | L1 line ground connection |
| Only b lamp is bright | L2 line ground connection |
| Only c lamp is bright | L3 line ground connection |
| Only a lamp, b lamp are bright | Phase fault occurs between L1 line and L2 line |
| Only a lamp, c lamp are bright | Phase fault occurs between L1 line and L3 line |
| Only b lamp, c lamp are bright | Phase fault occurs between L2 line and L3 line |
| A lamp, b lamp, c lamp are all bright | Phase fault occurs between L1 line, L2 line and L3 line |
| A lamp, b lamp, c lamp all do not work | L1 line, L2 line and L3 line are access or open circuit |
Step 3: if in step 2, three indicator lights are non-lit up, then prove that this three cables are access or open circuit；For
Check whether there are open circuit conditions, the probe that need to be connected with two be detected respectively at distribution box 50 L1 line and zero curve, L2 line with
Zero curve, L3 line and zero curve.If three indicator lights are lighted, prove that corresponding three cables of this three indicator lights are access, otherwise
For open circuit.
Indicator light lights situation and simulation power transmission result in two step 3 of table
| Indicator light lights situation | Simulate power transmission result |
| Only a lamp is bright | L2 line, L3 line open circuit |
| Only b lamp is bright | L1 line, L3 line open circuit |
| Only c lamp is bright | L1 line, L2 line open circuit |
| Only a lamp, b lamp are bright | L3 line open circuit |
| Only a lamp, c lamp are bright | L2 line open circuit |
| Only b lamp, c lamp are bright | L1 line open circuit |
| A lamp, b lamp, c lamp are all bright | L1 line, L2 line and L3 line are access |
| A lamp, b lamp, c lamp all do not work | Zero line break or L1 line, L2 line and L3 line are breaking |
If a lamp, b lamp, c lamp are all bright, prove that L1 line, L2 line and L3 line are access, three-phase cable meets construction requirement.
The utility model can detect cable, debugging distribution.Can carry out simulation power transmission before sending formal electricity, thus to cable or
Bus is detected, and subsequent handling can be made preposition, carries out the action situation of commissioning test or detection blower fan air-valve, the device in advance
It is simple and convenient, be suitable for various power utilization environments, can effectively shorten the duration, cost efficiency, improve efficiency.
The above is only the preferred embodiment of the present utility model, not does limit in any form to the utility model
System, although the utility model has been disclosed with preferred embodiment as above, is not intended to limit the utility model, any to be familiar with sheet
Technical professional, in the range of not departing from technical solutions of the utility model, when the technology contents using the disclosure above
It makes a little change or is modified to the equivalent embodiment of equivalent variations, but is all without departing from technical solutions of the utility model
Hold, any simple modification, equivalent change and modification made by the above technical examples according to the technical essence of the present invention, still
It is within the scope of the technical solutions of the present invention.
It should be noted that this specification structure depicted in this specification institute accompanying drawings, ratio, size etc., only to cooperate
The bright revealed content of book is not intended to limit the utility model implementable so that those skilled in the art understands and reads
Qualifications, therefore do not have technical essential meaning, the modification of any structure, the change of proportionate relationship or the adjustment of size,
In the case where not influencing the effect of the utility model can be generated and the purpose that can reach, should all still fall in disclosed in the utility model
Technology contents obtain and can cover in the range of.
Claims (9)
1. a kind of device for using low current to simulate power transmission for supply main characterized by comprising
Battery；
Inverter, the inverter are connected to the battery；
Frequency converter, the frequency converter are connected to the inverter by first switch；
Second switch, the second switch are change-over switch, and the input terminal of the second switch is connected to institute by third switch
Frequency converter is stated, the output end of the second switch is equipped with a main contacts and three auxiliary contacts；
For connecting three indicating devices of supply main, the first end of three indicating devices is connected to three institutes one to one
State auxiliary contact.
2. low current is used to simulate the device of power transmission for supply main as described in claim 1, it is characterised in that: described first
Switch is change-over switch, and the input terminal of the first switch is switchably connected to single-phase alternating current or the inverter, described the
The output end of one switch is connected to the frequency converter.
3. low current is used to simulate the device of power transmission for supply main as described in claim 1, it is characterised in that: the third
Switch is change-over switch, and the input terminal of third switch is switchably connected to three-phase mains or the frequency converter, described the
The output end of three switches is connected to the input terminal of the second switch.
4. low current is used to simulate the device of power transmission for supply main as described in claim 1, it is characterised in that: the secondary touching
Ammeter is connected between point and the first end of the indicating device.
5. low current is used to simulate the device of power transmission for supply main as claimed in claim 4, it is characterised in that: the electric current
Fuse is connected between table and the first end of the indicating device.
6. low current is used to simulate the device of power transmission for supply main as described in claim 1, it is characterised in that: the electric power storage
Pond is 24V battery.
7. low current is used to simulate the device of power transmission for supply main as claimed in claim 6, it is characterised in that: the electric power storage
Pond includes concatenated two pieces of 12V lead-acid accumulators.
8. using low current for the device of supply main simulation power transmission as described in any one of claims 1 to 7, feature exists
In: it further include shell, it is the battery, the inverter, the frequency converter, the first switch, the second switch, described
Third switch and the indicating device are respectively arranged in the shell, are set on the shell there are four electric connection, four electricity
Connector be connected to three indicating devices second end and the main contacts.
9. using low current for the device of supply main simulation power transmission as described in any one of claims 1 to 7, feature exists
In: the indicating device is indicator light.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201822190413.7U CN209358246U (en) | 2018-12-26 | 2018-12-26 | Low current is used to simulate the device of power transmission for supply main |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201822190413.7U CN209358246U (en) | 2018-12-26 | 2018-12-26 | Low current is used to simulate the device of power transmission for supply main |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN209358246U true CN209358246U (en) | 2019-09-06 |
Family
ID=67800828
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201822190413.7U Active CN209358246U (en) | 2018-12-26 | 2018-12-26 | Low current is used to simulate the device of power transmission for supply main |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN209358246U (en) |
-
2018
- 2018-12-26 CN CN201822190413.7U patent/CN209358246U/en active Active
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| WO2017219629A1 (en) | Photovoltaic inverter aging test system | |
| CN107462412B (en) | Mechanical property instrument for handcart switch integrated test | |
| CN206773076U (en) | High-voltage insulating resistance online monitoring alarm instrument | |
| CN208384025U (en) | A kind of test macro of direct-current charging post | |
| CN209358246U (en) | Low current is used to simulate the device of power transmission for supply main | |
| CN103312188B (en) | For power supply and the method for testing thereof of reactor performance test in power electronic equipment | |
| CN112506731A (en) | Design method of power distribution switch simulation interface device | |
| CN206788308U (en) | Full-automatic multiloop secondary cable Insulation test servicing unit | |
| CN205583687U (en) | Power transformer with secondary wiring is pulled out and is inserted function | |
| CN203251092U (en) | Multifunctional transition source box | |
| CN207601193U (en) | It is a kind of from mutual nuclear phase display device | |
| CN209182402U (en) | The rectified feedback unit online testing device of frequency converter | |
| CN102082431B (en) | Automatic N (neutral) line selection circuit | |
| CN219918412U (en) | Short-circuit protection device is prevented to electric test bench | |
| CN220381198U (en) | Electrified display device applied to transformer protection tripping outlet | |
| CN210222166U (en) | Portable fault diagnosis device for terminal box heater of transformer substation | |
| CN212675153U (en) | Intelligent switching device for secondary wiring in current transformer test | |
| CN205038275U (en) | Brake unit testing device | |
| CN216699499U (en) | Discharging circuit for DC protection electrical equipment level difference coordination tester | |
| CN203299303U (en) | Device for performing full load test of high-capacity static var generator without direction application of distribution network | |
| CN215375546U (en) | Multifunctional electricity meter with uninterrupted power supply verification function | |
| CN219533295U (en) | Online charge-discharge detection device of solar street lamp | |
| CN216696496U (en) | Double-power switching and checking device for alternating current power supply system of transformer substation | |
| CN212031702U (en) | On-site detector for high-voltage electroscope | |
| CN208654252U (en) | A kind of fully automatic electric source adapter high reliability burn-in inspection apparatus |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |