CN109406917A - A kind of detection system and method for distribution transforming gear state - Google Patents
A kind of detection system and method for distribution transforming gear state Download PDFInfo
- Publication number
- CN109406917A CN109406917A CN201811572094.4A CN201811572094A CN109406917A CN 109406917 A CN109406917 A CN 109406917A CN 201811572094 A CN201811572094 A CN 201811572094A CN 109406917 A CN109406917 A CN 109406917A
- Authority
- CN
- China
- Prior art keywords
- contact
- gear
- monitoring terminal
- signal processing
- processing module
- 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.)
- Pending
Links
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R31/00—Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Remote Monitoring And Control Of Power-Distribution Networks (AREA)
Abstract
本申请公开了一种配变档位状态的检测系统及方法，包括监测终端和与之传输线连接的机械传动触点装置，监测终端包括电源模块、与之连接的显示模块和信号处理模块，信号处理模块与显示模块连接；机械传动触点装置包括触点本体和指示牌，触点本体设置有主轴，主轴的两端连接手动旋钮和摆针，指示牌与主轴通过摆针活动连接，指示牌设置有多个档位，摆针设有探针；触点本体设有静接触点和触盘，静接触点与触盘分置于主轴的两侧，触盘设置有多个铜片，铜片分别对应指示牌的档位，探针沿着触盘移动，探针与多个铜片依次相接触。通过监测终端远距离控制机械传动触点装置对台区配变的档位监测，能够在不断电的情况下完成对档位状态检测，有效提高工作效率。
The present application discloses a detection system and method for shifting gear status, including a monitoring terminal and a mechanical transmission contact device connected with a transmission line. The monitoring terminal includes a power supply module, a display module and a signal processing module connected to the monitoring terminal, and a signal processing module. The processing module is connected with the display module; the mechanical transmission contact device includes a contact body and an indicator plate. The contact body is provided with a main shaft. Both ends of the main shaft are connected with a manual knob and a swing needle. The indicator plate and the main shaft are movably connected through the swing needle. There are multiple gear positions, and the oscillating needle is provided with a probe; the contact body is provided with a static contact point and a contact disk. The static contact point and the contact disk are located on both sides of the main shaft. The pieces correspond to the gear positions of the sign respectively, the probes move along the contact plate, and the probes are in contact with a plurality of copper pieces in turn. Through the monitoring terminal remote control of the mechanical transmission contact device to monitor the gear position of the distribution change in the station area, the gear status detection can be completed under the condition of uninterrupted power supply, and the work efficiency can be effectively improved.
Description
Technical field
This application involves distribution network technology field more particularly to a kind of detection systems and method of distribution transforming gear state.
Background technique
10kV power distribution network feature maximum in structure is directly connected with user as power grid end.In 10kV power distribution network
In operational process, to guarantee that line end voltage is met the requirements, need to monitor the gear of 10kV distribution transformer, so that selection is most
Excellent voltage pressure regulation method, it is therefore desirable to the gear of 10kV distribution transforming is monitored and be established and improve gear account.Electric power safety
Administrative provisions: should inspect periodically off circuit tap changer moving contact and whether static contact contact loosens with whether tap switch misplaces
Or in neutral gear position.
For existing detection mode generally by artificial detection, specific detection process is as follows: since distribution transformer gear is in shelves
Under the lid of position, it is first turned on gear lid and positioning pin；Formally gear is adjusted again；After tap switch is adjusted again, turn
It is dynamic to judge whether it is secured；Finally by direct-current bridge, each phase winding DC resistance is surveyed, it is ensured that the resistance value energy between each phase
Enough reach balance, completes adjustment work.
When adjusting distribution transforming gear, due to cannot be automatically adjusted, manually adjusted first to corresponding
It is corresponding to be unable to direct viewing since device of under actual working state, entirely transferring the files is covered by a closed metal cap for gear
Gear, need to open metal cap when later period gear checks and checked, and open metal cap and need first to power off, and need
Repeatedly power-off, the efficiency of inspection are especially low.In order to improve detection efficiency, detection system and the side of a kind of distribution transforming gear state are proposed
Method.
Summary of the invention
This application provides the detection systems and method of a kind of distribution transforming gear state, to solve existing detection method detection effect
The low technical problem of rate.
To solve the above-mentioned problems, the application provides technical solution below:
A kind of detection system of distribution transforming gear state, including monitoring terminal and machine driving contact making device, monitoring terminal with
Machine driving contact making device is connected by transmission line, in which: monitoring terminal includes display module, signal processing module and power supply mould
Block, power module are electrically connected with display module, signal processing module respectively, and signal processing module is electrically connected with display module, letter
Number processing module includes multiple signal processing circuits；Machine driving contact making device includes contact bodies and direction board, contact bodies
It is provided with main shaft, the both ends of main shaft are movably connected with manual knob and balancing point, and direction board is flexibly connected with main shaft by balancing point,
Direction board is provided with multiple gears, and balancing point includes balancing point movable part, balancing point connector and balancing point fixing piece, balancing point fixing piece and master
Axis is flexibly connected, and balancing point fixing piece is flexibly connected with balancing point movable part by balancing point connector, and the balancing point close to contact bodies connects
Fitting is provided with probe on one side；Contact bodies are additionally provided with quiet contact point and tactile disk, and quiet contact point and tactile disk are placed in main shaft
The shape of two sides, tactile disk is circle, and tactile disk is provided with multiple copper sheets, and copper sheet respectively corresponds the gear of direction board, and probe is along touching
Disk is mobile, and probe is successively in contact with multiple copper sheets.
Optionally, display module includes display screen and charactron.
Optionally, power module includes 1.5V dry cell and lithium ion battery.
Optionally, the number of copper sheet, the number of gear of direction board are identical with the number of the signal processing circuit of processing module.
Optionally, the number of the signal processing circuit of the number of copper sheet, the number of gear of direction board and processing module is 5
It is a.
A kind of detection method of distribution transforming gear state, method include:
Machine driving contact making device is fixed on tap switch；
Monitoring terminal is opened, and monitoring terminal is calibrated；
Machine driving contact making device is connect with monitoring terminal by transmission line；
Balancing point is turned to the gear of direction board by rotation manual button, the probe of balancing point contacts to form gear with copper sheet
Signal；
Gear signal is sent to the signal processing module of monitoring terminal by machine driving contact making device；
Gear signal is carried out processing and obtains processing signal by the signal processing module for monitoring terminal, and will processing signal transmission
To the display module of monitoring terminal.
The utility model has the advantages that the detection system includes that monitoring is whole this application provides a kind of detection system of distribution transforming gear state
End and machine driving contact making device, monitoring terminal are connect with machine driving contact making device by transmission line.The detection system is used for
Distribution transforming metering automation terminal device can not be transmitted to by solving current distribution transforming gear information, also can not remote transmission to back-stage management
The problem of system, is realized and monitors in gear of the distal end to the distribution transforming of platform area.In use process, machine driving contact making device is pacified first
Loaded in high-voltage isulation equipment, and it will test signal and monitoring terminal be sent to by transmission line, monitoring terminal will be after signal processing
And it shows.The monitoring terminal of processing detection signal includes display module, signal processing module and power module.All parts
Between connection relationship it is as follows: power module is electrically connected with display module, signal processing module respectively, signal processing module and aobvious
Show that module is electrically connected, signal processing module includes multiple signal processing circuits.Detection signal is sent at signal by transmission line
Module is managed, for signal processing module by handling the detection signal of input, driving display module is monitoring gear information
It is shown in terminal.Machine driving contact making device includes contact bodies and direction board, and contact bodies are provided with main shaft, the both ends of main shaft
It is movably connected with manual knob and balancing point, direction board is flexibly connected with main shaft by balancing point, and direction board is provided with multiple gears,
Balancing point includes balancing point movable part, balancing point connector and balancing point fixing piece, and balancing point fixing piece is connect with spindle mobility, balancing point fixing piece
It is flexibly connected with balancing point movable part by balancing point connector, the balancing point connector close to contact bodies is provided with probe on one side；Touching
Point ontology is additionally provided with quiet contact point and tactile disk, and quiet contact point and tactile disk are placed in the two sides of main shaft, and the shape of tactile disk is circle,
Tactile disk is provided with multiple copper sheets, and copper sheet respectively corresponds the gear of direction board, and probe is moved along tactile disk, probe and multiple copper sheets according to
It is secondary to be in contact.Copper sheet on probe and tactile disk constitutes signal detection module, to detect gear signal.Working principle is as follows: hand
Dynamic knob driving spindle rotates together, and main axis drives again rotates together balancing point.When manual knob rotates balancing point
When to direction board position, the specific location of gear inside machine driving contact making device can be determined by observing external gear.It uses
In the process, probe is rotated together with main shaft, and when rotating to some gear, probe can just be connect with the copper sheet on tactile disk, from
And switch is formed, switch is connect with monitoring terminal, and display module can show corresponding gear；The spy when rotating to some gear
When needle can just be connect with the copper sheet on tactile disk, balancing point turns to the respective notch of direction board.In the application, on probe and tactile disk
Copper sheet form certain driving switch and be shown in monitoring modular；Balancing point turns to corresponding gear in direction board, can pass through sight
The specific location that external gear determines gear inside machine driving contact making device is surveyed, can efficiently be completed in case of constant power
Verification and state-detection to gear, effectively improve working efficiency.In the application, passed by the way that monitoring terminal long distance control is mechanical
Movable contact device monitors the gear of platform area distribution transforming, can efficiently complete the verification and state to gear in case of constant power
Detection, effectively improves working efficiency.
Detailed description of the invention
In order to illustrate more clearly of the technical solution of the application, letter will be made to attached drawing needed in the embodiment below
Singly introduce, it should be apparent that, for those of ordinary skills, without any creative labor,
It is also possible to obtain other drawings based on these drawings.
Fig. 1 is a kind of structural schematic diagram of the detection system for distribution transforming gear state that application provides；
Fig. 2 is a kind of structural schematic diagram of the machine driving contact making device for distribution transforming gear state that application provides；
Fig. 3 is a kind of equivalent circuit diagram of the detection system for distribution transforming gear state that application provides；
Detailed description of the invention: 1- monitors terminal, 2- machine driving contact making device, 3- transmission line, 11- display module, at 12- signal
Reason module, 13- power module, 21- contact bodies, 22- direction board, 23- manual knob, 24- balancing point, 211- main shaft, 212- are quiet
Contact point, 213- tactile disk, 241- balancing point movable part, 242- balancing point connector, 243- balancing point fixing piece, 2131- copper sheet, 2421-
Probe.
Specific embodiment
Fig. 1 is a kind of structural schematic diagram of the detection system of distribution transforming gear state provided by the present application, and Fig. 2 mentions for the application
The structural schematic diagram of the machine driving contact making device of a kind of distribution transforming gear state supplied, referring to Fig. 1 and Fig. 2 it is found that the application mentions
A kind of detection system of distribution transforming gear state is supplied, which includes monitoring terminal 1 and machine driving contact making device 2, prison
It surveys terminal 1 and is connect with machine driving contact making device 2 by transmission line 3.The detection system is for solving current distribution transforming gear information
Distribution transforming metering automation terminal device can not be transmitted to, also can not remote transmission to background management system the problem of, realize remote
The gear of the area Duan Duitai distribution transforming monitors.In use process, machine driving contact making device 2 is installed on high-voltage isulation equipment first
On, and will test signal and monitoring terminal 1 is sent to by transmission line 3, monitoring terminal 1 after signal processing and will be shown.Place
The monitoring terminal 1 of reason detection signal includes display module 11, signal processing module 12 and power module 13.Between all parts
Connection relationship is as follows: power module 13 is electrically connected with display module 11, signal processing module 12 respectively, signal processing module 12 with
Display module 11 is electrically connected, and signal processing module 12 includes multiple signal processing circuits.Detection signal is sent to by transmission line 3
Signal processing module 12, signal processing module 12 drive display module 11 by shelves by handling the detection signal of input
Position information is shown in monitoring terminal 1.Machine driving contact making device 2 includes contact bodies 21 and direction board 22, contact bodies 21
It is provided with main shaft 211, the both ends of main shaft 211 are movably connected with manual knob 23 and balancing point 24, and direction board 22 and main shaft 211 are logical
The flexible connection of balancing point 24 is crossed, direction board 22 is provided with multiple gears, and balancing point 24 includes balancing point movable part 241, balancing point connector 242
With balancing point fixing piece 243, balancing point fixing piece 243 is flexibly connected with main shaft 211, and balancing point fixing piece 243 and 24 movable part of balancing point are logical
The flexible connection of balancing point connector 242 is crossed, the balancing point connector 242 close to contact bodies 21 is provided with probe 2421 on one side；Contact
Ontology 21 is additionally provided with quiet contact point 212 and tactile disk 213, and quiet contact point 212 and tactile disk 213 are placed in the two sides of main shaft 211, touching
The shape of disk 213 is circle, and tactile disk 213 is provided with multiple copper sheets 2131, and copper sheet 2131 respectively corresponds the gear of direction board 22, is visited
Needle 2421 is moved along tactile disk 213, and probe 2421 is successively in contact with multiple copper sheets 2131.On probe 2421 and tactile disk 213
Copper sheet 2131 constitutes signal detection module, to detect gear signal.It is a kind of distribution transforming gear shape provided by the present application referring to Fig. 3
The circuit diagram of the detection system of state, it is known that, copper sheet 2131 and probe 2421 on tactile disk 213 collectively constitute multiple switch, equivalent
For S1, S2, S3, S4, S5 in Fig. 2.Positive pole connects current-limiting resistance, current-limiting resistance linking probe 2421.Multiple gears pair
The connected conducting wire of copper sheet 2131 answered is connected with the anode of corresponding common cathode charactron respectively, and the charactron of display module 11 is public
End is connect with master switch S altogether, S connection power cathode.By the acquisition to different stalls information, relevant control circuit is connected,
Display module 11 is driven, to show corresponding gear information.Working principle is as follows: 23 rotate driving main shaft 211 1 of manual knob
Rotation is played, driving rotates together balancing point 24 to the rotation of main shaft 211 again.When balancing point 24 is turned to direction board 22 by manual knob 23
When setting, the specific location of 2 inside gear of machine driving contact making device can be determined by observing external gear.In use process, visit
Needle 2421 is rotated together with main shaft 211, when rotating to some gear probe 2421 can just with the copper sheet on tactile disk 213
2131 connections, to form switch, switch is connect with monitoring terminal 1, and display module 11 can show corresponding gear；Work as rotation
When probe 2421 can just be connect with the copper sheet 2131 on tactile disk 213 when to some gear, balancing point 24 turns to direction board 22
Respective notch.In the application, the copper sheet 2131 on probe 2421 and tactile disk 213 forms certain driving switch and is shown in monitoring mould
Block 1；Balancing point 24 turns to corresponding gear in direction board 22, can determine machine driving contact making device 2 by observing external gear
The specific location of internal gear can efficiently complete verification and state-detection to gear in case of constant power, effectively mention
High working efficiency.When adjusting distribution transforming gear, due to cannot be automatically adjusted, manually adjusts arrive phase first
Gear is answered, it, cannot since under actual working state, entire machine driving contact making device 2 is covered by a closed metal cap
The corresponding gear of direct viewing needs to open metal cap when later period gear checks and is checked, and opens metal cap and need elder generation
Power-off, therefore the efficiency checked is especially low, and needs repeatedly power-off, so reducing to improve routing inspection efficiency due to power-off
Brought loss, machine driving contact making device 2 designed by the application indicate to switch locating by external direction board 22
Gear.But since the environment for switching locating is more severe, direction board 22 will appear damage, error etc. occurs in instruction, in order to improve
Confidence level, the application devise an auxiliary monitoring terminal 1.It can be realized at a distance by the monitoring terminal 1 to gear information
It is detected.In the application, the gear by monitoring 12 pairs of platform area distribution transformings of far distance control machine driving contact making device of terminal is supervised
It surveys, can efficiently complete the verification and state-detection to gear in case of constant power, effectively improve working efficiency.
For convenience in the monitoring display gear of terminal 1, the present embodiment, display module 11 includes display screen and charactron.
Display screen and charactron may be incorporated for the gear information of display detection.It monitors and handles electricity in the signal processing module 12 of terminal 1
Road constitutes associated loop according to the gear information that machine driving contact making device 2 acquires, and drives the display detection of display module 11
Gear information.
In order to power to monitoring terminal 1, in the present embodiment, power module 13 includes 1.5V dry cell and lithium ion battery.
1.5V dry cell and lithium ion battery all can be monitor the power supply of terminal 1, and the light weight of battery, mitigate the matter of monitoring terminal 1
Amount facilitates the carrying of monitoring terminal 1.
In order to facilitate display gear, in the present embodiment, the number of copper sheet 2131, the number of gear of direction board 22 and processing mould
The number of the signal processing circuit of block 12 is identical, and number is 5.At the number of copper sheet 22131 and the signal of processing module 12
The number for managing circuit is identical, so that the number of gear that monitoring terminal 1 is shown is identical as the number of copper sheet 2131, facilitates monitoring terminal
The display of 1 gear.Direction board 22 is identical as the number of copper sheet 2131 so that the number of gear that shows of monitoring terminal 1 with from metal
The outer number of gear observed directly of cover is identical, improves the accuracy of gear detection.
The application additionally provides a kind of distribution transforming gear state other than providing a kind of detection system of distribution transforming gear state
Detection method, this method comprises:
S01: machine driving contact making device is fixed on tap switch；
S02: monitoring terminal is opened, and monitoring terminal is calibrated；
S03: machine driving contact making device is connect with monitoring terminal by transmission line；
Balancing point: being turned to the gear of direction board by rotation manual button by S04, and the probe of balancing point contacts to be formed with copper sheet
Gear signal；
S05: gear signal is sent to the signal processing module of monitoring terminal by machine driving contact making device；
S06: gear signal is carried out processing and obtains processing signal by the signal processing module for monitoring terminal, and will handle signal
It is transferred to the display module of monitoring terminal.
Those skilled in the art will readily occur to its of the application after considering the embodiment of specification and practice here
Its embodiment.This application is intended to cover any variations, uses, or adaptations of the application, these modifications, purposes or
Person's adaptive change follows the general principle of the application and including the not used common knowledge in the art of the application
Or conventional techniques.The description and examples are only to be considered as illustrative, and the true scope and spirit of the application are by following
Claim is pointed out.
It should be understood that the application is not limited to the precise structure that has been described above and shown in the drawings, and
And various modifications and changes may be made without departing from the scope thereof.Scope of the present application is only limited by the accompanying claims.
Claims (6)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811572094.4A CN109406917A (en) | 2018-12-21 | 2018-12-21 | A kind of detection system and method for distribution transforming gear state |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811572094.4A CN109406917A (en) | 2018-12-21 | 2018-12-21 | A kind of detection system and method for distribution transforming gear state |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN109406917A true CN109406917A (en) | 2019-03-01 |
Family
ID=65460484
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811572094.4A Pending CN109406917A (en) | 2018-12-21 | 2018-12-21 | A kind of detection system and method for distribution transforming gear state |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN109406917A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110332353A (en) * | 2019-07-05 | 2019-10-15 | 嵊州市格伦电子机械科技有限公司 | A plug valve with electric signal control function structure of gear switch |
Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2336385Y (en) * | 1997-09-24 | 1999-09-01 | 周宏铎 | Microcomputerized automatic testing and handling device for taps of transformer |
| US6718842B1 (en) * | 1998-07-16 | 2004-04-13 | Fico Triad | Shift lever unit |
| CN202418544U (en) * | 2011-12-12 | 2012-09-05 | 浙江吉利汽车研究院有限公司 | Gear recognition device of manual transmission |
| CN102944743A (en) * | 2012-10-25 | 2013-02-27 | 长兴县供电局 | Detection instrument, detection system and detection method for distribution and transformation tapping point gear |
| CN203397957U (en) * | 2013-07-12 | 2014-01-15 | 广州市德百顺电气科技有限公司 | Shift indicating device of on-load tap-changer |
| CN206193110U (en) * | 2016-11-22 | 2017-05-24 | 云南电网有限责任公司电力科学研究院 | Distribution transformer gear measuring device |
| CN106783018A (en) * | 2016-11-22 | 2017-05-31 | 云南电网有限责任公司电力科学研究院 | A kind of distribution transformer gear visual device |
| CN206236567U (en) * | 2016-10-17 | 2017-06-09 | 平高集团有限公司 | A kind of shunting switch and its gear detecting mechanism |
| CN206992997U (en) * | 2017-07-25 | 2018-02-09 | 国网江西省电力公司萍乡市湘东区供电分公司 | A kind of band distribution transformer gear adjusting device that mechanically and electrically double source indicates |
| CN108269705A (en) * | 2018-02-11 | 2018-07-10 | 宁波安德奥电力设备有限公司 | The more gears of pull-type have load strip-shape tap switch |
-
2018
- 2018-12-21 CN CN201811572094.4A patent/CN109406917A/en active Pending
Patent Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2336385Y (en) * | 1997-09-24 | 1999-09-01 | 周宏铎 | Microcomputerized automatic testing and handling device for taps of transformer |
| US6718842B1 (en) * | 1998-07-16 | 2004-04-13 | Fico Triad | Shift lever unit |
| CN202418544U (en) * | 2011-12-12 | 2012-09-05 | 浙江吉利汽车研究院有限公司 | Gear recognition device of manual transmission |
| CN102944743A (en) * | 2012-10-25 | 2013-02-27 | 长兴县供电局 | Detection instrument, detection system and detection method for distribution and transformation tapping point gear |
| CN203397957U (en) * | 2013-07-12 | 2014-01-15 | 广州市德百顺电气科技有限公司 | Shift indicating device of on-load tap-changer |
| CN206236567U (en) * | 2016-10-17 | 2017-06-09 | 平高集团有限公司 | A kind of shunting switch and its gear detecting mechanism |
| CN206193110U (en) * | 2016-11-22 | 2017-05-24 | 云南电网有限责任公司电力科学研究院 | Distribution transformer gear measuring device |
| CN106783018A (en) * | 2016-11-22 | 2017-05-31 | 云南电网有限责任公司电力科学研究院 | A kind of distribution transformer gear visual device |
| CN206992997U (en) * | 2017-07-25 | 2018-02-09 | 国网江西省电力公司萍乡市湘东区供电分公司 | A kind of band distribution transformer gear adjusting device that mechanically and electrically double source indicates |
| CN108269705A (en) * | 2018-02-11 | 2018-07-10 | 宁波安德奥电力设备有限公司 | The more gears of pull-type have load strip-shape tap switch |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110332353A (en) * | 2019-07-05 | 2019-10-15 | 嵊州市格伦电子机械科技有限公司 | A plug valve with electric signal control function structure of gear switch |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| RU2690003C2 (en) | Method and system of modular energy saving | |
| US20140035607A1 (en) | Handheld Devices, Systems, and Methods for Measuring Parameters | |
| CN205282326U (en) | Dual -power automatic transfer switch | |
| CN109406917A (en) | A kind of detection system and method for distribution transforming gear state | |
| CN108012398A (en) | A kind of ion blower for possessing automated cleaning ion pin function | |
| CN204945283U (en) | The dynamic electric conductivity checkout equipment of rolling bearing | |
| CN108501042A (en) | A kind of bionic eye of array of magnetic dipoles control | |
| CN104849611A (en) | Polarity test system of current transformer | |
| CN207689624U (en) | A kind of assembly line surveys high pressure resistant device automatically | |
| CN207611091U (en) | Resistive performance detection device and system | |
| CN115480136A (en) | Portable Insulation Testing Device for Magnetic Bearings | |
| CN207096399U (en) | One kind station switchs Online Transaction Processing with low-voltage alternating-current ATS is become | |
| CN201955466U (en) | Multifunctional electric apparatus parameter test instrument | |
| CN205003934U (en) | Protection device is gathered to intelligence electric quantity | |
| CN205562767U (en) | Test battery capacity's analog switch | |
| CN204903694U (en) | Current transformer polarity test system | |
| CN203840061U (en) | Air switch position acquisition device | |
| CN209841974U (en) | Energy storage loop real-time monitoring device | |
| CN203720310U (en) | MOS tube test circuit | |
| CN209928757U (en) | Portable electric wiring troubleshooting training box | |
| CN207967744U (en) | Operation rod for electricity inspection | |
| CN208752176U (en) | Portable permanent magnet switch complete equipment maintenance device | |
| CN220207830U (en) | Rotor tail rotor collector ring test equipment | |
| CN110470930A (en) | The hand-held reaying protection test instrument of low cost | |
| CN207133366U (en) | Intelligent terminal response time test system |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20190301 |