WO2016035131A1 - 遮断器特性監視装置 - Google Patents
遮断器特性監視装置 Download PDFInfo
- Publication number
- WO2016035131A1 WO2016035131A1 PCT/JP2014/073004 JP2014073004W WO2016035131A1 WO 2016035131 A1 WO2016035131 A1 WO 2016035131A1 JP 2014073004 W JP2014073004 W JP 2014073004W WO 2016035131 A1 WO2016035131 A1 WO 2016035131A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- time
- circuit breaker
- closing
- movable contact
- opening
- Prior art date
Links
Images
Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H71/00—Details of the protective switches or relays covered by groups H01H73/00 - H01H83/00
- H01H71/04—Means for indicating condition of the switching device
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H1/00—Contacts
- H01H1/0015—Means for testing or for inspecting contacts, e.g. wear indicator
-
- 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
- G01R31/28—Testing of electronic circuits, e.g. by signal tracer
- G01R31/2851—Testing of integrated circuits [IC]
- G01R31/2882—Testing timing characteristics
-
- 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
- G01R31/327—Testing of circuit interrupters, switches or circuit-breakers
- G01R31/3271—Testing of circuit interrupters, switches or circuit-breakers of high voltage or medium voltage devices
- G01R31/3272—Apparatus, systems or circuits therefor
- G01R31/3274—Details related to measuring, e.g. sensing, displaying or computing; Measuring of variables related to the contact pieces, e.g. wear, position or resistance
-
- 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
- G01R31/327—Testing of circuit interrupters, switches or circuit-breakers
- G01R31/3277—Testing of circuit interrupters, switches or circuit-breakers of low voltage devices, e.g. domestic or industrial devices, such as motor protections, relays, rotation switches
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H71/00—Details of the protective switches or relays covered by groups H01H73/00 - H01H83/00
- H01H71/10—Operating or release mechanisms
- H01H71/12—Automatic release mechanisms with or without manual release
- H01H71/24—Electromagnetic mechanisms
-
- 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
- G01R31/327—Testing of circuit interrupters, switches or circuit-breakers
- G01R31/3271—Testing of circuit interrupters, switches or circuit-breakers of high voltage or medium voltage devices
- G01R31/3275—Fault detection or status indication
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H71/00—Details of the protective switches or relays covered by groups H01H73/00 - H01H83/00
- H01H71/04—Means for indicating condition of the switching device
- H01H2071/044—Monitoring, detection or measuring systems to establish the end of life of the switching device, can also contain other on-line monitoring systems, e.g. for detecting mechanical failures
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H2300/00—Orthogonal indexing scheme relating to electric switches, relays, selectors or emergency protective devices covered by H01H
- H01H2300/052—Controlling, signalling or testing correct functioning of a switch
Definitions
- the present invention relates to a circuit breaker characteristic monitoring device for monitoring the characteristics of a circuit breaker installed in a substation, a switching station or the like.
- the circuit breaker contact is closed after the command is issued, which is the time from when the command is issued during the circuit breaker operation until the circuit breaker contact opens.
- the closing time which is the time until the pole is opened
- the opening speed which is the speed when the circuit breaker contact starts moving and the opening speed
- the closing speed which is the speed when the circuit breaker contact starts moving.
- Patent Document 2 detects a rising point and a minimum point of a control current waveform at the time of turning on, an operation start point of a rotation operation shaft, a predetermined angle rotation point, and a full angle rotation point, and a time between each point.
- An invention is disclosed in which a sign of an abnormality of a circuit breaker is grasped by comparing the distance or distance with a reference value.
- the present invention has been made in view of the above, and an object of the present invention is to obtain a circuit breaker characteristic monitoring device capable of detecting the timing at which a consumable part of a circuit breaker needs to be replaced.
- the present invention monitors the circuit breaker characteristics by monitoring the operation of the circuit breaker and estimating the amount of consumption of the movable contact and the fixed contact included in the circuit breaker.
- a closing time that is a time required from when the circuit breaker starts a closing operation to the closing, and a required time from when the circuit breaker starts the opening operation to the opening.
- An operation time measurement unit that measures at least one of a certain opening time, a measurement result in the operation time measurement unit, and a moving speed of the movable contact in a closing operation or an opening operation from which the measurement result is obtained
- a contact consumption amount estimation unit that estimates consumption amounts of the movable contact and the fixed contact.
- the present invention it is possible to estimate the consumption amount of the consumables constituting the circuit breaker, and it is possible to replace the consumables at an appropriate timing.
- the figure which shows the structural example of the system to which the circuit breaker characteristic monitoring apparatus concerning this invention is applied.
- FIG. 1 is a diagram showing a configuration example of a system to which a circuit breaker characteristic monitoring device according to the present invention is applied.
- the circuit breaker characteristic monitoring device 1 monitors the characteristics of a circuit breaker installed in a substation, a switching station or the like, specifically, a circuit breaker including the operation device 2 and the arc extinguishing chamber 3.
- the circuit breaker characteristic monitoring device 1 includes an operation time measurement unit 11 and a contact consumption amount estimation unit 12, and is configured to be connected to an external device such as a personal computer (PC).
- PC personal computer
- the operation device 2 includes an opening electromagnet 21, a closing electromagnet 22, an output lever 23, and an operation speed measurement unit 24.
- the arc extinguishing chamber 3 includes a movable contact 31 and a fixed contact 32.
- the output lever 23 is configured to be rotatable around a rotation axis (not shown).
- a movable contact 31 is connected to the output lever 23. That is, the movable contact 31 moves with the rotation of the output lever 23. Therefore, when performing the opening operation for switching from the state in which the movable contact 31 and the fixed contact 32 are electrically connected to the state in which they are not connected, the output lever 23 is rotated in the first direction.
- the output lever 23 is in the second direction opposite to the first direction.
- the controller device 2 performs an opening operation or a closing operation when a predetermined condition is satisfied. For example, when it is detected that the current flowing through a load (not shown) connected via the fixed contact 32 exceeds a certain value, the opening operation is performed. In the opening operation, a current is supplied to the opening electromagnet 21 to generate a magnetic field, and the output lever 23 is rotated in the first direction.
- the operation speed measurement unit 24 measures the moving speed of the movable contact 31 in the opening operation and the closing operation.
- the moving speed is calculated based on the position of the movable contact 31.
- the position can be measured by a method similar to the conventional method described in Patent Documents 1 and 2, for example.
- a bar code may be attached to a movable part such as the output lever 23 and the movable contact 31, and the measurement may be performed by optically reading the bar code.
- the operation speed measurement unit 24 measures the position of the movable contact 31 a plurality of times in the opening operation and the closing operation, and calculates the moving speed based on the measurement time and the measurement result.
- the operation speed measurement unit 24 notifies the circuit breaker characteristic monitoring device 1 of the moving speed of the movable contact 31.
- the operation time measuring unit 11 starts the opening time, which is a required time from when the circuit breaker starts the opening operation to the opening state, and the circuit breaker starts the closing operation. Then, the closing time, which is the time required until the closing state is reached, is measured.
- the opening time is a time required until the movable contact 31 and the fixed contact 32 are separated after a control current instructing the opening flows.
- the closing time is a time required from when a control current for instructing closing flows until the movable contact 31 and the fixed contact 32 come into contact with each other.
- the opening time can be measured based on the control current and load current flowing through the open circuit electromagnet 21.
- the operating time measuring unit 11 determines that the opening operation has started when a control current for instructing opening of the opening electromagnet 21 flows, starts measuring the opening time, and when the load current becomes zero. It is determined that the contact has been opened, and the measurement is terminated.
- the closing time can be measured based on the control current flowing through the closing electromagnet 22 and the load current.
- the operating time measuring unit 11 determines that the closing operation starts when the control current for instructing closing flows to the closing electromagnet 22 and starts measuring the closing time. When the load current flows, the operating time measuring unit 11 starts closing. It is determined that the state has been reached and the measurement is terminated.
- the distance that the movable contact 31 moves is fixed.
- the movable contact 31 continues to move even after coming into contact with the fixed contact 32 and stops when it reaches the first specified position.
- the movable contact 31 continues to move after being separated from the fixed contact 32 and stops when it reaches the second specified position. That is, the movable contact 31 moves from the second specified position to the first specified position in the closing operation, and moves from the first specified position to the second specified position in the opening operation.
- the closing operation after the movable contact 31 moves beyond the first specified position, it returns to the opposite direction by a minute distance and then stops at the first specified position.
- the contact consumption amount estimation unit 12 determines the operation time that is the opening time or the closing time measured by the operation time measurement unit 11 and the moving speed of the movable contact 31 during the opening operation or the closing operation. Based on this, the consumption amount of the movable contact 31 and the fixed contact 32 is estimated.
- FIG. 2 is a diagram for explaining a method of estimating the consumption amount based on the closing time.
- FIG. 3 is a diagram for explaining a method of estimating the consumption amount based on the opening time.
- “contact point” shown on the vertical axis indicates a contact state between the movable contact 31 and the fixed contact 32. Low indicates an open state where the movable contact 31 and the fixed contact 32 are not in contact, and High indicates a closed state where the movable contact 31 and the fixed contact 32 are in contact.
- the timing at which the movable contact 31 and the fixed contact 32 come into contact is expressed as a contact ON, and the timing at which the movable contact 31 and the fixed contact 32 leave is expressed as a contact OFF.
- “Travel” indicates the position of the movable contact 31 when the second predetermined position, which is the position where the movable contact 31 is farthest from the fixed contact 32, is used as a reference. As the movable contact 31 approaches the fixed contact 32, the value of “travel” increases. That is, “travel” corresponds to the distance from the second specified position to the movable contact 31.
- the “control current waveform” indicates the waveform of the control current flowing through the opening electromagnet 21 or the closing electromagnet 22. The “control current waveform” in FIG.
- control current waveform in FIG. 3 shows the waveform of the control current flowing through the coil constituting the open circuit electromagnet 21. As shown in the figure, it is known that the control current increases at the start of the closing operation and at the start of the opening operation.
- the closing time becomes longer as the consumption amount of the movable contact 31 and the fixed contact 32 becomes larger. That is, after the movable contact 31 starts moving toward the fixed contact 32, the timing at which the contact is turned on by contacting the fixed contact 32 (timing for closing) is delayed.
- the opening time is shortened as the consumption amount of the movable contact 31 and the fixed contact 32 is increased. That is, the opening timing is accelerated.
- the contact consumption estimation unit 12 determines the consumption of the movable contact 31 and the fixed contact 32 based on the closing time or opening time and the moving speed of the movable contact 31. Is estimated.
- the contact consumption amount estimation unit 12 performs the closing operation based on the moving speed of the movable contact 31.
- the moving time of the movable contact 31 is calculated.
- the moving time of the movable contact 31 in the closing operation is compared with the closing time.
- the moving time of the movable contact 31 in the closing operation is the distance between the position of the movable contact 31 at the start of the closing operation and the position of the movable contact 31 at the end of the closing operation. This is the time required to move.
- this time is referred to as operation time.
- the contact consumption amount estimation unit 12 moves the moving speed measured by the operation speed measurement unit 24, that is, the moving amount in the closing operation.
- the operation time can be calculated based on the moving speed of the contact 31.
- the distance that the movable contact 31 moves in the closing operation is stored in, for example, a storage unit (not shown).
- the movable contact 31 and the fixed contact 32 which are consumables, are inspected using a display unit (not shown) or a connected PC or other means. Notify outside that replacement is required.
- information on the operation time of the movable contact 31 in the closing operation is calculated in advance, for example, illustration is omitted. You may make it hold
- the contact consumption amount estimation unit 12 estimates the consumption amount by comparing with the closing time measured in the past by the operation time measurement unit 11. Good. In this case, the difference between the previously measured closing time and the newly measured closing time is the estimated consumption amount.
- the closing time measured in the past is the closing time measured in the first closing operation after replacing the consumables.
- the contact consumption amount estimation unit 12 moves the movable contact during the opening time based on the moving speed of the movable contact 31. Calculate time. Then, the moving time of the movable contact 31 in the opening operation and the opening time are compared. The moving time of the movable contact 31 in the opening operation is equal to the above-described “moving time of the movable contact 31 in the closing operation”.
- the operation time information of the movable contact 31 in the opening operation may be calculated in advance, and may be stored in advance, for example, in a storage unit (not shown).
- the contact consumption amount estimation unit 12 estimates the consumption amount by comparing with the opening time measured in the past by the operation time measurement unit 11. Good. In this case, the difference between the previously measured opening time and the newly measured opening time is the estimation result of the consumption amount.
- the opening time measured in the past is the opening time measured in the first opening operation after exchanging consumables.
- the consumption amount estimation by the contact consumption amount estimation unit 12 may be performed in both the closing operation and the opening operation, or may be performed in either one of the operations.
- the circuit breaker characteristic monitoring device has a closing time, which is a time from the start of the closing operation to the closing, and from the start of the opening operation to the opening of the opening. Based on both or one of the opening times that are the time and the moving speed of the movable contact, the movable contact and the fixed contact that are consumables that are consumed when the closing operation and the opening operation are performed. The amount of consumption was estimated. In addition, when the consumption amount reaches a specified value, it is notified to the outside that the consumable item needs to be replaced. Thereby, it becomes possible to exchange consumables at an appropriate timing. In addition, it is possible to realize a reduction in work cost for maintenance and inspection and a reduction in parts cost.
Landscapes
- Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- General Physics & Mathematics (AREA)
- Theoretical Computer Science (AREA)
- Computer Hardware Design (AREA)
- Microelectronics & Electronic Packaging (AREA)
- General Engineering & Computer Science (AREA)
- Electromagnetism (AREA)
- Arc-Extinguishing Devices That Are Switches (AREA)
- Keying Circuit Devices (AREA)
Abstract
Description
図1は、本発明にかかる遮断器特性監視装置を適用したシステムの構成例を示す図である。遮断器特性監視装置1は、変電所、開閉所などに設置されている遮断器、具体的には操作装置2および消弧室3を備えている遮断器の特性を監視するものである。
Claims (7)
- 遮断器の動作を監視して当該遮断器が備えている可動接触子および固定接触子の消耗量を推定する遮断器特性監視装置であって、
前記遮断器が閉極動作を開始してから閉極するまでの所要時間である閉極時間および前記遮断器が開極動作を開始してから開極するまでの所要時間である開極時間の少なくともいずれか一方を計測する動作時間計測部と、
前記動作時間計測部における計測結果と、当該計測結果が得られた閉極動作または開極動作における前記可動接触子の移動速度に基づいて、前記可動接触子および前記固定接触子の消耗量を推定する接触子消耗量推定部と、
を備えることを特徴とする遮断器特性監視装置。 - 前記動作時間計測部は、
閉極動作で使用する閉路用電磁石に流れる第1の制御電流および前記遮断器を介して負荷に流れる電流である負荷電流に基づいて閉極時間を計測する第1の処理、および、開極動作で使用する開路用電磁石に流れる第2の制御電流および前記負荷電流に基づいて開極時間を計測する第2の処理、の少なくとも一方を実行する、
ことを特徴とする請求項1に記載の遮断器特性監視装置。 - 前記接触子消耗量推定部は、
推定した消耗量が一定の値を超えている場合、前記可動接触子および固定接触子の交換が必要な旨を外部へ通知する、
ことを特徴とする請求項1に記載の遮断器特性監視装置。 - 前記閉極動作の開始時点における前記可動接触子の位置から前記閉極動作の終了時点における前記可動接触子の位置までの距離である移動距離を記憶しておき、
前記接触子消耗量推定部は、
前記動作時間計測部が前記閉極時間を計測した場合、
前記移動距離および前記閉極時間を計測した閉極動作における前記可動接触子の移動速度に基づいて、当該閉極動作における前記可動接触子の移動時間を算出し、当該算出した移動時間と前記閉極時間とを比較することにより前記消耗量を推定する、
ことを特徴とする請求項1に記載の遮断器特性監視装置。 - 前記接触子消耗量推定部は、
前記移動時間と前記閉極時間の差がしきい値以下の場合、前記消耗量が一定の値を超えていると判断する、
ことを特徴とする請求項4に記載の遮断器特性監視装置。 - 前記開極動作の開始時点における前記可動接触子の位置から前記開極動作の終了時点における前記可動接触子の位置までの距離である移動距離を記憶しておき、
前記接触子消耗量推定部は、
前記動作時間計測部が前記開極時間を計測した場合、
前記移動距離および前記開極時間を計測した開極動作における前記可動接触子の移動速度に基づいて、当該開極動作における前記可動接触子の移動時間を算出し、当該算出した移動時間と前記開極時間とを比較することにより前記消耗量を推定する、
ことを特徴とする請求項1に記載の遮断器特性監視装置。 - 前記接触子消耗量推定部は、
前記移動時間と前記開極時間の差がしきい値以上の場合、前記消耗量が一定の値を超えていると判断する、
ことを特徴とする請求項6に記載の遮断器特性監視装置。
Priority Applications (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US15/507,634 US10224165B2 (en) | 2014-09-02 | 2014-09-02 | Circuit breaker characteristic monitoring device |
PCT/JP2014/073004 WO2016035131A1 (ja) | 2014-09-02 | 2014-09-02 | 遮断器特性監視装置 |
JP2015517300A JP5868553B1 (ja) | 2014-09-02 | 2014-09-02 | 遮断器特性監視装置 |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
PCT/JP2014/073004 WO2016035131A1 (ja) | 2014-09-02 | 2014-09-02 | 遮断器特性監視装置 |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2016035131A1 true WO2016035131A1 (ja) | 2016-03-10 |
Family
ID=55360895
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/JP2014/073004 WO2016035131A1 (ja) | 2014-09-02 | 2014-09-02 | 遮断器特性監視装置 |
Country Status (3)
Country | Link |
---|---|
US (1) | US10224165B2 (ja) |
JP (1) | JP5868553B1 (ja) |
WO (1) | WO2016035131A1 (ja) |
Families Citing this family (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN107976684B (zh) * | 2016-10-25 | 2023-08-04 | 日立能源瑞士股份公司 | 用于监测电路断路器的系统和方法 |
EP3460822B1 (en) * | 2017-09-26 | 2021-04-07 | ABB Schweiz AG | Method for operating a medium voltage circuit breaker or recloser and medium voltage circuit breaker or recloser itself |
CN107884709A (zh) * | 2017-11-07 | 2018-04-06 | 国网重庆市电力公司电力科学研究院 | 一种断路器检测系统 |
CN109556845A (zh) * | 2018-11-30 | 2019-04-02 | 西门子电力自动化有限公司 | 开关设备的断路器的监测方法、监测装置和开关设备 |
CN111007444A (zh) * | 2019-12-04 | 2020-04-14 | 萨康电子(上海)有限公司 | 一种磁感应开关的距离测量方法 |
CN111103535B (zh) * | 2019-12-25 | 2022-09-02 | 深圳供电局有限公司 | 断路器监测装置 |
Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS58178929A (ja) * | 1982-04-13 | 1983-10-20 | 日新電機株式会社 | コンタクトの寿命判定方法 |
JPH0150332B2 (ja) * | 1984-01-31 | 1989-10-30 | Hyuuman Indasutorii Koohoreeshon Kk | |
JPH01171369U (ja) * | 1988-05-23 | 1989-12-05 | ||
JPH06331675A (ja) * | 1993-05-20 | 1994-12-02 | Mitsubishi Electric Corp | ワイプ量測定装置 |
WO2005111641A1 (ja) * | 2004-05-13 | 2005-11-24 | Mitsubishi Denki Kabushiki Kaisha | 状態把握装置およびこの状態把握装置を使用した電力開閉機器の開閉制御装置 |
Family Cites Families (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS54145967A (en) | 1978-05-09 | 1979-11-14 | Fuji Electric Co Ltd | Preventive maintenance apparatus for breaker |
JPS61203517A (ja) | 1985-03-06 | 1986-09-09 | 株式会社日立製作所 | 開閉装置診断方法 |
JPH0795410B2 (ja) | 1986-03-27 | 1995-10-11 | 日新電機株式会社 | 遮断器類の予測保全装置 |
JPS63249068A (ja) | 1987-04-06 | 1988-10-17 | Fuji Electric Co Ltd | 開閉機器の予防保全方法 |
JPS6450332A (en) * | 1987-08-20 | 1989-02-27 | Toshiba Corp | Stroke measurement device for power on-off device |
FR2919421B1 (fr) * | 2007-07-23 | 2018-02-16 | Schneider Electric Industries Sas | Actionneur electromagnetique a au moins deux bobinages |
-
2014
- 2014-09-02 US US15/507,634 patent/US10224165B2/en active Active
- 2014-09-02 WO PCT/JP2014/073004 patent/WO2016035131A1/ja active Application Filing
- 2014-09-02 JP JP2015517300A patent/JP5868553B1/ja active Active
Patent Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS58178929A (ja) * | 1982-04-13 | 1983-10-20 | 日新電機株式会社 | コンタクトの寿命判定方法 |
JPH0150332B2 (ja) * | 1984-01-31 | 1989-10-30 | Hyuuman Indasutorii Koohoreeshon Kk | |
JPH01171369U (ja) * | 1988-05-23 | 1989-12-05 | ||
JPH06331675A (ja) * | 1993-05-20 | 1994-12-02 | Mitsubishi Electric Corp | ワイプ量測定装置 |
WO2005111641A1 (ja) * | 2004-05-13 | 2005-11-24 | Mitsubishi Denki Kabushiki Kaisha | 状態把握装置およびこの状態把握装置を使用した電力開閉機器の開閉制御装置 |
Also Published As
Publication number | Publication date |
---|---|
US20170287666A1 (en) | 2017-10-05 |
JP5868553B1 (ja) | 2016-02-24 |
JPWO2016035131A1 (ja) | 2017-04-27 |
US10224165B2 (en) | 2019-03-05 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
JP5868553B1 (ja) | 遮断器特性監視装置 | |
US9117609B2 (en) | Electromagnetic opening/closing device | |
JP2011210546A (ja) | リレーの寿命予測装置 | |
US20130103334A1 (en) | Method for Diagnosing an Operating State of a Contactor and Contactor for Implementing Said Method | |
JP2012199115A (ja) | 電磁開閉装置 | |
US9048049B2 (en) | Electromagnetic opening/closing device | |
US9425012B2 (en) | Electromagnetic operation device for vacuum circuit breaker | |
CN104459524A (zh) | 辅助单元、含断路器和辅助单元的电力系统及确定断路器断开原因的方法 | |
JP2020501251A (ja) | 自動化システムの電気機械コンポーネントをモニタリングするための方法 | |
CN104272414A (zh) | 用于功能监控分级开关的方法 | |
JP2012020825A (ja) | エレベータのブレーキ制御装置 | |
WO2014014081A1 (ja) | 励磁突入電流抑制装置及びその抑制方法 | |
US20180323551A1 (en) | System and method for determining the current condition of power contacts | |
CN110192260B (zh) | 真空开关装置及其异常监视方法 | |
KR101415079B1 (ko) | 차단기 제어 회로 전원의 변화를 고려한 차단기 진단 장치 | |
WO2020137260A1 (ja) | 継電器状態予測装置、継電器状態予測システム、継電器状態予測方法、およびプログラム | |
WO2020121768A1 (ja) | 継電器状態判定装置、継電器状態判定システム、継電器状態判定方法、およびプログラム | |
EP3069364B1 (en) | Method for controlling a contactor device, and control unit | |
CN102024624A (zh) | 监视电触点状态的装置和方法 | |
JP6438365B2 (ja) | 遮断器システム | |
US9476943B2 (en) | Solenoid status determination methods and systems | |
US20210302277A1 (en) | Method of status monitoring | |
JP2009212024A (ja) | 開閉装置 | |
EP3185383B1 (en) | A method for detecting a fault in a recloser | |
WO2016038988A1 (ja) | 蒸気タービン、制御方法及びプログラム |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
ENP | Entry into the national phase |
Ref document number: 2015517300 Country of ref document: JP Kind code of ref document: A |
|
121 | Ep: the epo has been informed by wipo that ep was designated in this application |
Ref document number: 14901112 Country of ref document: EP Kind code of ref document: A1 |
|
WWE | Wipo information: entry into national phase |
Ref document number: 15507634 Country of ref document: US |
|
NENP | Non-entry into the national phase |
Ref country code: DE |
|
122 | Ep: pct application non-entry in european phase |
Ref document number: 14901112 Country of ref document: EP Kind code of ref document: A1 |