CN115561629A - Portable motor no-load test device - Google Patents
Portable motor no-load test device Download PDFInfo
- Publication number
- CN115561629A CN115561629A CN202211128231.1A CN202211128231A CN115561629A CN 115561629 A CN115561629 A CN 115561629A CN 202211128231 A CN202211128231 A CN 202211128231A CN 115561629 A CN115561629 A CN 115561629A
- Authority
- CN
- China
- Prior art keywords
- motor
- switch
- circuit
- series
- control circuit
- 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.)
- Granted
Links
Images
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
- G01R31/34—Testing dynamo-electric machines
- G01R31/343—Testing dynamo-electric machines in operation
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Tests Of Circuit Breakers, Generators, And Electric Motors (AREA)
Abstract
The application discloses portable motor no-load test device includes: the soft starter comprises an input end, an output end, a first control end and a second control end; the input end is electrically connected with a three-phase power supply; the output end of the motor to be tested is electrically connected with the input end of the motor to be tested, and the first control end of the motor to be tested is electrically connected with a first switch; the soft starter is used for starting when the first switch is closed so as to start the motor to be tested; the control circuit comprises a starting switch, a stopping switch and a first electromagnet coil which are sequentially connected in series; the control circuit is used for conducting when the starting switch is closed and controlling the first switch to be closed based on the first electromagnet coil; the detection end of the vibration sensor is connected with the motor to be detected; the output end is electrically connected with the processor; the vibration parameter detection device is used for detecting a vibration signal of the motor after the motor is started, outputting the vibration signal to the processor, and processing the vibration signal by using the processor to obtain the vibration parameter. The device in this application can make things convenient for, swift carry out no-load test to the motor that awaits measuring.
Description
Technical Field
The invention relates to the technical field of motor no-load detection, in particular to a portable motor no-load test device.
Background
At present, the number of the motors of the domestic nuclear power plant is as large as 3400 (pumps, fans and the like) taking a million kilowatt-level unit as an example, the safe and reliable operation of the motors is related to important items such as nuclear safety, power generation efficiency and the like, and the motors are required to be maintained regularly whether in-service equipment or stored strategic equipment and spare parts. The motor is required to be subjected to no-load tests after the motor is disassembled and replaced daily, and the purpose is to confirm the steering direction of the motor, measure the bearing temperature, the body temperature, the running current, the existence of abnormal sounds and the like of the motor, so that the qualification rate of motor maintenance is judged, and the irreversible damage of load equipment caused by disqualification when the load equipment is connected for function re-identification is avoided.
Traditional motor no-load test mode is direct start and need transport the motor near suitable capacity's maintenance power, connects interim cable to carry out no-load test, from this needs transport and hoist and mount motor, extravagant manpower and materials, and the incident takes place easily in-process and causes the damage equipment to direct start motor power loss is great. For in-service equipment, a motive power cable is usually used for carrying out an idle load test, but most motors of a nuclear power plant are started and stopped and are associated with instrument control logic protection of a DCS (distributed control system) of a main control room, the process of 'temporary control change-TCA' is required to be handled in the idle load test of the motors, the process is required to be carried out in the DCS, professional personnel are required to carry out the process, the safety risk of the system is high when the change is carried out, a special implementation scheme is required to be established, leaders at all levels are required to examine and approve the change process, the process time is long, more personnel are involved, the safety risk of the system is high, the starting mode of the motors is direct starting after the protection is removed, and the electric energy loss is high.
Therefore, a portable motor no-load test device is urgently needed to solve the problems that in the prior art, a motor no-load test is not convenient enough and the test consumes long time.
Disclosure of Invention
In view of the above, the invention provides a portable motor no-load test device, and mainly aims to solve the problems that the existing motor no-load test is not convenient enough and the test consumes long time.
In order to solve the above problem, the present application provides a portable motor no-load test device, including:
the soft starter comprises an input end, an output end, a first control end and a second control end; the input end is electrically connected with a three-phase power supply; the output end is electrically connected with the input end of the motor to be tested, and the first control end is electrically connected with a first switch; the soft starter is used for starting when the first switch is closed so as to start the motor to be tested;
the control circuit comprises a starting switch, a stopping switch and a first electromagnet coil which are sequentially connected in series; the control circuit is used for conducting when the starting switch is closed and controlling the first switch to be closed based on the first electromagnet coil;
the detection end of the vibration sensor is connected with the motor to be detected; the output end is electrically connected with the processor; the vibration detection device is used for detecting a vibration signal of the motor after the motor is started and outputting the vibration signal to the processor so as to process the vibration signal by the processor to obtain a vibration parameter.
Optionally, the soft starter further includes a second control end;
the second control end is connected with a bypass protection electromagnetic coil in series; the bypass protection electromagnetic coil is used for being conducted after the soft starter is started;
the control circuit is also connected with a thermal relay switch in series;
the input end and the output end of the soft starter are connected with an overcurrent protection circuit in parallel; the overcurrent protection circuit comprises a bypass thermal relay coil and a first bypass contact switch which are sequentially connected in series; the first bypass contact switch is used for being closed when the bypass protection coil is conducted so as to conduct the overcurrent protection circuit; and the thermal relay coil is used for controlling the thermal relay switch in the control circuit to be switched off when the motor to be tested is short-circuited during overload, so that the control circuit is switched off to enable the three asynchronous motors to be in soft shutdown.
Optionally, a normally closed emergency stop switch is further connected in series between the control circuit and the power supply.
Optionally, a miniature circuit breaker is further connected in series between the control circuit and the power supply.
Optionally, a switch isolation power supply is further connected in parallel between the control circuit and the power supply.
Optionally, a fuse is further connected in series between the control circuit and the power supply.
Optionally, the second control end of the soft starter is further electrically connected to a fault indication circuit; the fault indication circuit comprises a second electromagnet coil and a fault indicator lamp connected with the second electromagnet coil in parallel.
Optionally, the portable motor no-load test device further comprises an operation indicating circuit; the operation indicating circuit comprises an operation indicating lamp and a second bypass contact switch connected with the operation indicating lamp in series; the second bypass contact switch is used for being closed when the bypass protection coil is conducted, and the operation indicating circuit is conducted so as to enable the operation indicating lamp to be lightened.
Optionally, the portable motor no-load test device further includes a stop indication circuit, where the stop indication circuit includes a stop indication lamp and a second switch connected in series with the stop indication lamp; the second switch is used for being switched off when the first electromagnet coil is switched on so as to enable the stop indicator lamp to be turned off; and is closed when the first electromagnet coil is opened, so that the stop indicator lamp is lighted.
Optionally, the portable motor no-load test device further comprises a temperature acquisition sensor, and an inspection end of the temperature sensor is connected with the motor to be tested and used for detecting the temperature of the motor to be tested.
Portable motor no-load test device in this application, when the motor that awaits measuring needs to carry out the no-load test, only need to await measuring the motor and be connected on the soft starter of the portable motor no-load test device in this application, and the motor that will await measuring is connected with the detection end of the vibration sensor in this application, can realize the start-up of the motor that awaits measuring and the detection of vibration parameter from this, realize the no-load experiment to the motor that awaits measuring, convenient and fast, the experimental time reduces greatly, need not to transport or hoist and mount the motor again, manpower and materials are saved.
When needs detect the valve under test, confirm whether the valve performance satisfies the requirement, just can be connected the valve under test with the valve detection device in this application to the realization utilizes the device in this application to carry out the performance detection to the valve automatically, need not the manual work and detects according to the experience, improved detection efficiency, and the testing result is more accurate.
The above description is only an overview of the technical solutions of the present invention, and the present invention can be implemented in accordance with the content of the description so as to make the technical means of the present invention more clearly understood, and the above and other objects, features, and advantages of the present invention will be more clearly understood.
Drawings
Various additional advantages and benefits will become apparent to those of ordinary skill in the art upon reading the following detailed description of the preferred embodiments. The drawings are only for purposes of illustrating the preferred embodiments and are not to be construed as limiting the invention. Also, like reference numerals are used to refer to like parts throughout the drawings. In the drawings:
fig. 1 is an overall schematic diagram of a portable motor no-load test device according to an embodiment of the present application;
fig. 2 is a schematic circuit diagram of a portable motor no-load test device in an embodiment of the present application.
Detailed Description
Various aspects and features of the present application are described herein with reference to the drawings.
It will be understood that various modifications may be made to the embodiments of the present application. Accordingly, the foregoing description should not be considered as limiting, but merely as exemplifications of embodiments. Those skilled in the art will envision other modifications within the scope and spirit of the application.
The accompanying drawings, which are incorporated in and constitute a part of the specification, illustrate embodiments of the application and, together with a general description of the application given above, and the detailed description of the embodiments given below, serve to explain the principles of the application.
These and other characteristics of the present application will become apparent from the following description of a preferred form of embodiment, given as a non-limiting example, with reference to the attached drawings.
It is also to be understood that although the present application has been described with reference to some specific examples, those skilled in the art are able to ascertain many other equivalents to the practice of the present application.
The above and other aspects, features and advantages of the present application will become more apparent in view of the following detailed description when taken in conjunction with the accompanying drawings.
Specific embodiments of the present application are described hereinafter with reference to the drawings; however, it is to be understood that the disclosed embodiments are merely exemplary of the application, which can be embodied in various forms. Well-known and/or repeated functions and constructions are not described in detail to avoid obscuring the application of unnecessary or unnecessary detail. Therefore, specific structural and functional details disclosed herein are not to be interpreted as limiting, but merely as a basis for the claims and as a representative basis for teaching one skilled in the art to variously employ the present application in virtually any appropriately detailed structure.
The specification may use the phrases "in one embodiment," "in another embodiment," "in yet another embodiment," or "in other embodiments," which may each refer to one or more of the same or different embodiments in accordance with the application.
The embodiment of the application provides a portable motor no-load test device, as shown in fig. 1 and fig. 2, the device in the embodiment includes:
the soft starter CMC can be a three-phase asynchronous motor soft starter, and comprises an input end, an output end, a first control end and a second control end. The input end is electrically connected with three-phase power supplies L1, L2 and L3; the output end is electrically connected with the input end of the motor M to be tested, and the first control end is electrically connected with a first switch KA1-K 1 (ii) a The soft starter is used for a first switch KA1-K 1 Starting when the motor is closed so as to start the motor to be tested;
control circuits, i.e. soft-start-stop control circuitsWhich comprises a starting switch SB connected in series in sequence 1 Stop switch SB 2 And a first electromagnet coil KA1; the control circuit is used for starting the switch SB 1 When the first switch is closed, the first switch is switched on and controlled based on a first electromagnet coil KA1 to be switched on and switched off from KA1 to K 1 . Starting switch SB in this embodiment 1 Being of normally-open type, stop switch SB 2 A switch of the normally closed type. Wherein, the starting switch SB 1 Switches KA1-K are connected in parallel, and the switches KA1-K are connected in parallel to enable the switch to be used at SB 1 At the moment of closing, the first electromagnet coil KA1 is conducted and the switches KA1-K are closed, so that the control circuit is continuously conducted.
The detection end of the vibration sensor T2 is connected with the motor to be detected; the output end is electrically connected with the processor; the vibration detection device is used for detecting a vibration signal of the motor after the motor is started and outputting the vibration signal to the processor so as to process the vibration signal by the processor to obtain a vibration parameter.
In a specific implementation process of this embodiment, the soft starter further includes a second control end, that is, an automatic control end; the second control end/automatic control end is connected with a bypass protection electromagnetic coil KM in series; and the second control end is used for conducting after the soft starter is started, so that the bypass protection electromagnetic coil KM is conducted. The control circuit is also connected with a thermal relay switch FR-K in series; the thermal relay switch FR-K is a normally closed type switch. The input end and the output end of the soft starter are connected with an overcurrent protection circuit in parallel; the overcurrent protection circuit comprises a bypass thermal relay coil FR and a first bypass contact switch KM-K which are sequentially connected in series 1 (ii) a The first bypass contact switch KM-K 1 And the bypass protection coil KM is closed when being conducted, so that the over-current protection circuit is conducted. And the thermal relay coil FR is used for controlling the thermal relay switch FR-K in the control circuit to be switched off when the motor to be tested is in short circuit when being overloaded, so that the control circuit is switched off to enable the three asynchronous motors to be in soft shutdown. The "CMC 6" and "CMC 8" belong to soft start automatic control, and may be referred to as a second control end or a soft start control end. The motor to be tested is controlled to be automatic through the CMC6 7 end after reaching a certain rotating speedBypass operation, the "CMC 8 9" end is used for soft start automatic fault identification.
In this embodiment, a normally closed emergency stop switch KH is further connected in series between the control circuit and the power supply. And a miniature circuit breaker Q1 is also connected in series between the control circuit and the power supply. And a switch isolation power supply R1 (380V/24V) is connected in parallel between the control circuit and the power supply. In addition, a fuse FU is also connected in series between the control circuit and the power supply. The safety of operators can be guaranteed by arranging the switch isolation power supply R1. Through at weak current side installation KH emergency stop button, guarantee whole return circuit emergency braking, set up fuse FU simultaneously and can ensure secondary circuit fault fusing.
In this embodiment, the second control end of the soft starter is further electrically connected to a fault indication circuit; the fault indication circuit comprises a second electromagnet coil KA2 and a fault indication lamp HL1 connected with the second electromagnet coil in parallel.
The portable motor no-load test device in the embodiment further comprises an operation indicating circuit; the operation indicating circuit comprises an operation indicating lamp HL2 and a second bypass contact switch KM-K connected with the operation indicating lamp HL2 in series 2 (ii) a The second bypass contact switch KM-K 2 And the bypass protection coil KM is closed when being conducted, and the operation indicating circuit is conducted so as to enable the operation indicating lamp to be lightened.
In the specific implementation process of the embodiment, the portable motor no-load test device further comprises a stop indication circuit, and the stop indication circuit comprises a stop indication lamp HL3 and second switches KA1-K connected in series with the stop indication lamp 2 (ii) a The second switch KA1-K 2 The first electromagnet coil KA1 is disconnected when being conducted, so that the stop indicator lamp is turned off; when the first solenoid KA1 is turned off, it is closed to turn on the stop lamp.
In this embodiment, the portable motor no-load test device further includes a temperature acquisition sensor T1, and an inspection end of the temperature sensor is connected to the motor to be tested, and is configured to detect a temperature of the motor to be tested.
In a specific implementation process, the portable motor no-load test device further comprises a voltmeter and an ammeter, wherein the voltmeter is used for detecting the voltage of the to-be-detected motor after being started, and the ammeter is used for detecting the current of the to-be-detected motor after being started.
The portable motor no-load test device in this embodiment is further provided with a memory, and the memory is electrically connected with the processor and is used for storing collected parameters of the motor to be tested, such as temperature, vibration times, voltage, current and the like.
In this embodiment, the incoming line power supply of the control box is powered on and then passes through a Q0 (63A/3P) breaker, and the installed voltmeter is used for incoming line voltage measurement. The ammeter is used for auxiliary operation current measurement, and the CMC is a motor soft starter. KM-K1 is bypass contactor/first bypass contact switch for after soft starter "CMC" thyristor all switches on, shift motor load current to protect soft starter, extension soft starter life, installation bypass thermal relay/thermal relay coil FR simultaneously, when the electric current is too big thermal relay coil FR is used for short circuit when the motor that awaits measuring transships, control thermal relay switch FR-K among the control circuit breaks off, thereby high-efficient protection motor. Q1 is the miniature circuit breaker of secondary circuit, for guarantee operating personnel safety installation R1 (380V 24V) switch isolated power, weak current side installation KH emergency stop button ensures whole return circuit emergency braking, FU guarantee secondary circuit fault fusing, SB1, SB2 are for opening the stop button, and T1, T2 are temperature, vibration sensor module respectively. The CMC soft starter has the functions of fault monitoring protection, running current display, overload protection, overheat protection and the like, displays related data on a microcomputer extension module, and mainly can input related running and protection parameters of the motor before the motor runs, thereby realizing ideal display and protection functions.
The portable motor no-load test device in the embodiment is convenient to move, compact in size and light in weight, can realize the starting and normal operation within 60A of the maximum no-load current of a motor below 90KW, the box body is provided with 3 plug-in type cables, the portable motor no-load test device is convenient to select and use according to motors of different specifications, a control panel can automatically input motor parameters (power, rated voltage and trial rotation time), the realization of the protection function (current over-limit alarm, current skip stop exceeding the set value, operation voltage and motor rotation speed) of expected target data (real-time current, phase failure, voltage abnormal skip stop and phase failure response skip stop) can be intelligently displayed, the installation buttons and the operation voltage of the box body of the control cabinet are 24V safe voltages, and the portable motor no-load test device has the motor temperature data acquisition function and the vibration data acquisition function, and historical data can be obtained by powering on after off-line.
Portable motor no-load test device in this embodiment, when the motor that awaits measuring needs to carry out no-load test, only need to await measuring the motor and be connected with portable motor no-load test device's in this application soft starter, and the motor that will await measuring is connected with the detection end of the vibration sensor in this application, can realize the start-up of the motor that awaits measuring and the detection of vibration parameter from this, realize the no-load experiment to the motor that awaits measuring, and is convenient and fast, the experimental time reduces greatly, need not to transport again or hoist and mount the motor, manpower and materials are saved.
The above embodiments are only exemplary embodiments of the present application, and are not intended to limit the present application, and the protection scope of the present application is defined by the claims. Various modifications and equivalents may be made by those skilled in the art within the spirit and scope of the present application and such modifications and equivalents should also be considered to be within the scope of the present application.
Claims (10)
1. A portable motor no-load test device is characterized by comprising:
the soft starter comprises an input end, an output end, a first control end and a second control end; the input end is electrically connected with a three-phase power supply; the output end is electrically connected with the input end of the motor to be tested, and the first control end is electrically connected with a first switch; the soft starter is used for starting when the first switch is closed so as to start the motor to be tested;
the control circuit comprises a starting switch, a stopping switch and a first electromagnet coil which are sequentially connected in series; the control circuit is used for conducting when the starting switch is closed and controlling the first switch to be closed based on the first electromagnet coil;
the detection end of the vibration sensor is connected with the motor to be detected; the output end is electrically connected with the processor; the vibration detection device is used for detecting a vibration signal of the motor after the motor is started and outputting the vibration signal to the processor so as to process the vibration signal by the processor to obtain a vibration parameter.
2. The apparatus of claim 1, wherein the soft starter further comprises a second control terminal;
the second control end is connected with a bypass protection electromagnetic coil in series; the bypass protection electromagnetic coil is used for conducting after the soft starter is started;
the control circuit is also connected with a thermal relay switch in series;
the input end and the output end of the soft starter are connected with an overcurrent protection circuit in parallel; the overcurrent protection circuit comprises a bypass thermal relay coil and a first bypass contact switch which are sequentially connected in series; the first bypass contact switch is used for being closed when the bypass protection coil is conducted so as to conduct the overcurrent protection circuit; and the thermal relay coil is used for controlling the thermal relay switch in the control circuit to be switched off when the motor to be tested is short-circuited during overload, so that the control circuit is switched off to enable the three asynchronous motors to be in soft shutdown.
3. The device as claimed in claim 1, wherein a normally closed type emergency stop switch is further connected in series between the control circuit and the power supply.
4. The apparatus of claim 1, wherein a miniature circuit breaker is also connected in series between the control circuit and the power source.
5. The apparatus of claim 1, wherein a switch isolation power supply is connected in parallel between the control circuit and the power supply.
6. The apparatus of claim 1, wherein a fuse is also connected in series between the control circuit and the power source.
7. The apparatus of claim 1, wherein the second control terminal of the soft starter is further electrically connected to a fault indication circuit; the fault indicating circuit comprises a second electromagnet coil and a fault indicating lamp connected with the second electromagnet coil in parallel.
8. The apparatus of claim 1, wherein said portable motor no-load test apparatus further comprises an operation indication circuit; the operation indicating circuit comprises an operation indicating lamp and a second bypass contact switch connected with the operation indicating lamp in series; the second bypass contact switch is used for being closed when the bypass protection coil is conducted, and the operation indicating circuit is conducted so as to enable the operation indicating lamp to be lightened.
9. The apparatus of claim 1, wherein said portable motor no-load test apparatus further comprises a stop indication circuit comprising a stop indicator light and a second switch in series with said stop indicator light; the second switch is used for being switched off when the first electromagnet coil is switched on so as to enable the stop indicator lamp to be turned off; and is closed when the first electromagnet coil is opened, so that the stop indicator lamp is lightened.
10. The device as claimed in claim 1, wherein the portable motor no-load test device further comprises a temperature acquisition sensor, and the inspection end of the temperature sensor is connected with the motor to be tested and used for detecting the temperature of the motor to be tested.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211128231.1A CN115561629B (en) | 2022-09-16 | 2022-09-16 | Portable motor no-load test device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211128231.1A CN115561629B (en) | 2022-09-16 | 2022-09-16 | Portable motor no-load test device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN115561629A true CN115561629A (en) | 2023-01-03 |
| CN115561629B CN115561629B (en) | 2023-09-01 |
Family
ID=84740195
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202211128231.1A Active CN115561629B (en) | 2022-09-16 | 2022-09-16 | Portable motor no-load test device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN115561629B (en) |
Citations (15)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6586905B1 (en) * | 2000-06-28 | 2003-07-01 | Siemens Energy & Automation | Automatic sensing of bypassing of soft starter or controller |
| CN202435320U (en) * | 2011-09-28 | 2012-09-12 | 四川瑞能硅材料有限公司 | Protection circuit of soft starter |
| CN103532445A (en) * | 2013-10-28 | 2014-01-22 | 广东申菱空调设备有限公司 | Start control device for heavy load start of motor and control method of device |
| CN204244113U (en) * | 2014-09-26 | 2015-04-01 | 宁波宝新不锈钢有限公司 | A kind of control circuit of soft initiator |
| CN105099279A (en) * | 2014-05-06 | 2015-11-25 | 江苏腾源建筑工程机械有限公司 | Soft start control circuit of construction elevator |
| CN207037032U (en) * | 2017-06-01 | 2018-02-23 | 广州中船文冲船坞有限公司 | For testing the device of alternating current generator |
| CN207083029U (en) * | 2017-07-11 | 2018-03-09 | 浙江正泰电器股份有限公司 | Soft-starter control system |
| CN207664894U (en) * | 2018-01-05 | 2018-07-27 | 安徽华尔泰化工股份有限公司 | A kind of soft strater control circuit |
| CN208015122U (en) * | 2018-04-19 | 2018-10-26 | 大唐陕西发电有限公司渭河热电厂 | A kind of motor experiment power control cabinet |
| CN110380649A (en) * | 2019-07-26 | 2019-10-25 | 六盘水金星机电设备有限公司 | A kind of energy-saving soft start cabinet |
| US20200204104A1 (en) * | 2017-05-22 | 2020-06-25 | Siemens Aktiengesellschaft | Diagnosable soft starter, diagnostic method, and motor arrangement |
| CN213151719U (en) * | 2020-07-30 | 2021-05-07 | 中核检修有限公司 | Power supply control circuit and power supply cabinet for motor no-load test |
| CN215817504U (en) * | 2021-06-30 | 2022-02-11 | 内蒙古乌海化工有限公司 | Motor soft start circuit and motor start cabinet |
| CN114446728A (en) * | 2021-12-20 | 2022-05-06 | 河南平高电气股份有限公司 | GIS circuit breaker dish spring hydraulic pressure mechanism energy storage pressure control device and circuit breaker |
| CN217332757U (en) * | 2022-03-31 | 2022-08-30 | 国能神东煤炭集团有限责任公司 | No-load test system for mining high-voltage motor |
-
2022
- 2022-09-16 CN CN202211128231.1A patent/CN115561629B/en active Active
Patent Citations (15)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6586905B1 (en) * | 2000-06-28 | 2003-07-01 | Siemens Energy & Automation | Automatic sensing of bypassing of soft starter or controller |
| CN202435320U (en) * | 2011-09-28 | 2012-09-12 | 四川瑞能硅材料有限公司 | Protection circuit of soft starter |
| CN103532445A (en) * | 2013-10-28 | 2014-01-22 | 广东申菱空调设备有限公司 | Start control device for heavy load start of motor and control method of device |
| CN105099279A (en) * | 2014-05-06 | 2015-11-25 | 江苏腾源建筑工程机械有限公司 | Soft start control circuit of construction elevator |
| CN204244113U (en) * | 2014-09-26 | 2015-04-01 | 宁波宝新不锈钢有限公司 | A kind of control circuit of soft initiator |
| US20200204104A1 (en) * | 2017-05-22 | 2020-06-25 | Siemens Aktiengesellschaft | Diagnosable soft starter, diagnostic method, and motor arrangement |
| CN207037032U (en) * | 2017-06-01 | 2018-02-23 | 广州中船文冲船坞有限公司 | For testing the device of alternating current generator |
| CN207083029U (en) * | 2017-07-11 | 2018-03-09 | 浙江正泰电器股份有限公司 | Soft-starter control system |
| CN207664894U (en) * | 2018-01-05 | 2018-07-27 | 安徽华尔泰化工股份有限公司 | A kind of soft strater control circuit |
| CN208015122U (en) * | 2018-04-19 | 2018-10-26 | 大唐陕西发电有限公司渭河热电厂 | A kind of motor experiment power control cabinet |
| CN110380649A (en) * | 2019-07-26 | 2019-10-25 | 六盘水金星机电设备有限公司 | A kind of energy-saving soft start cabinet |
| CN213151719U (en) * | 2020-07-30 | 2021-05-07 | 中核检修有限公司 | Power supply control circuit and power supply cabinet for motor no-load test |
| CN215817504U (en) * | 2021-06-30 | 2022-02-11 | 内蒙古乌海化工有限公司 | Motor soft start circuit and motor start cabinet |
| CN114446728A (en) * | 2021-12-20 | 2022-05-06 | 河南平高电气股份有限公司 | GIS circuit breaker dish spring hydraulic pressure mechanism energy storage pressure control device and circuit breaker |
| CN217332757U (en) * | 2022-03-31 | 2022-08-30 | 国能神东煤炭集团有限责任公司 | No-load test system for mining high-voltage motor |
Non-Patent Citations (2)
| Title |
|---|
| 沈立宸，黄渝祝: "电动执行机构力矩校验台校验技术", 《电工技术》, pages 45 - 46 * |
| 牟淑杰，荆珂主编: "《电气控制与PLC技术》", 电子科技大学出版社, pages: 45 - 46 * |
Also Published As
| Publication number | Publication date |
|---|---|
| CN115561629B (en) | 2023-09-01 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US8547107B2 (en) | Self-diagnostic apparatus for electrical storage system | |
| RU2553669C2 (en) | Automatic circuit breaker with fault indication and secondary power supply source | |
| US7683603B1 (en) | Automatic disconnect system, transfer system and method | |
| CN214622949U (en) | Testing arrangement suitable for direct current breaker with electronic control board | |
| JP3590389B2 (en) | Winding rare short monitor for electrical equipment | |
| CN215300162U (en) | Low-voltage transformer area load uninterrupted switching system | |
| KR20150077771A (en) | Battery management device and power supplying system including the same | |
| CN115561629A (en) | Portable motor no-load test device | |
| Proctor | Application of undervoltage protection to critical motors | |
| CN115808643A (en) | Regulator cubicle function test platform with real-time data acquisition | |
| EP2889174A1 (en) | Battery management device and power supplying system including the same, electrically isolating each battery unit upon fault | |
| CA2214471C (en) | Control of a device in an inaccessible location | |
| CN111443281B (en) | Electrical blocking device and circuit breaker or isolating switch | |
| CN113985132A (en) | Insulation resistance measuring device and method for standby motor | |
| CN214480355U (en) | Power supply fault rapid isolation and protection device with brake load protection function and permanent magnet synchronous generator set thereof | |
| CN111740642B (en) | Dual-motor control system and engineering equipment | |
| CN111211545A (en) | Method and system for protecting single-phase broken line at high-voltage side of transformer with balance winding | |
| CN110887644A (en) | Load switch gear state detection method and system | |
| JP2006345699A (en) | Protection device for load circuits | |
| CN112583310A (en) | Power supply fault rapid isolation and protection device with brake load protection function | |
| CN216848013U (en) | Centralized insulation device that surveys of motor suitable for 400V voltage class | |
| CN217882826U (en) | Relay protection device and wind turbine generator system | |
| KR20020074689A (en) | Apparatus and method for detecting electrovic relay | |
| RU2751534C1 (en) | Frequency converter | |
| CA3101286C (en) | Smart capacitor |
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 | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |