WO2018158942A1 - Branching unit for bus duct - Google Patents
Branching unit for bus duct Download PDFInfo
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- WO2018158942A1 WO2018158942A1 PCT/JP2017/008544 JP2017008544W WO2018158942A1 WO 2018158942 A1 WO2018158942 A1 WO 2018158942A1 JP 2017008544 W JP2017008544 W JP 2017008544W WO 2018158942 A1 WO2018158942 A1 WO 2018158942A1
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- bus duct
- measuring device
- cable
- circuit breaker
- branch unit
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02H—EMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS
- H02H3/00—Emergency protective circuit arrangements for automatic disconnection directly responsive to an undesired change from normal electric working condition with or without subsequent reconnection ; integrated protection
- H02H3/16—Emergency protective circuit arrangements for automatic disconnection directly responsive to an undesired change from normal electric working condition with or without subsequent reconnection ; integrated protection responsive to fault current to earth, frame or mass
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J13/00—Circuit arrangements for providing remote indication of network conditions, e.g. an instantaneous record of the open or closed condition of each circuitbreaker in the network; Circuit arrangements for providing remote control of switching means in a power distribution network, e.g. switching in and out of current consumers by using a pulse code signal carried by the network
Definitions
- This invention relates to a branch unit of a bus duct used in a DC power distribution system.
- a protection device is provided to monitor and protect the circuit power.
- to monitor the supply status of power to equipment in factories, buildings, data centers, etc. configure power reception and branch wiring with power distribution boards and distribution boards, and measure power at the power distribution boards and distribution panels. The power distribution status is monitored.
- branch wiring is performed by using a bus duct and providing a branch unit that can be connected to the bus duct as a power trunk system that can relatively easily cope with an increase in power demand.
- this bus duct power distribution method can be applied to a DC circuit, it is also used in a DC power distribution system in a data center or the like. Even in a system that distributes DC power using a bus duct and a branch unit without providing a distribution board or a distribution board, it is necessary to protect against an overload of the distribution line, particularly a ground fault, from the viewpoint of safety. For fault detection, it is possible to detect a fault by installing a protective relay on the switchboard before the branch of the bus duct. . Moreover, although a protection relay can be provided in the space for storing the load equipment after branch wiring, there is a problem that the storage efficiency is deteriorated because the storage space is reduced.
- a plug-in unit for branch load extraction that can be attached to and detached from the bus duct is provided, and branching is performed by a power measuring device in the plug-in unit.
- Japanese Patent Application Laid-Open No. 2004-133867 obtains information including the voltage value and current value of a circuit that has been measured and monitors whether there is an abnormality in the connection portion of the wiring based on information on the voltage value and current value at a power receiving point measured separately. Proposed.
- an object of the present invention is to provide a ground fault protection function in a branch unit, and to efficiently operate air conditioning while detecting and protecting each branch circuit.
- the present invention provides a bus duct branch unit of a bus duct power distribution system, a cable connecting an input terminal connected to a conductor of the bus duct and an output terminal connected to a load, and an electric circuit provided in an electric circuit by the cable Circuit breaker, a current sensor for detecting the current value flowing through the cable, and a measuring device for detecting the ground fault from the detected value of the current sensor and operating the circuit breaker, and for each branch unit for bus duct It is designed to be able to deal with ground faults.
- FIG. 1 is a schematic diagram showing the configuration of the branch unit 1.
- the branch unit 1 and the conductor 2 of the bus duct are connected by a cable 4.
- One terminal of the cable 4 is connected to the conductor 2 of the bus duct using the junction 3 as an input terminal.
- the cable 4 is provided with a circuit breaker 5 and a sensor 6.
- the other terminal of the cable 4 is configured such that a load-side cable is connected as the output terminal 7.
- the sensor 6 detects a current flowing through the cable 4 and outputs a detection value to the measuring device 8.
- the measuring device 8 is provided with a liquid crystal screen 9 and a status display lamp 10 and is configured to display the operating state of the measuring device 8.
- the sensor 6 and the measuring device 8 are connected by a sensor connecting cable 11, and the detection value of the sensor 6 is sent to the measuring device 8 by the sensor connecting cable 11. Further, the measuring device 8 and the circuit breaker 5 are connected by a circuit breaker opening signal line 12, and the circuit breaker 5 is configured to be turned off according to a signal from the measuring device 8. . Further, the measuring device 8 is provided with an information output terminal 13 for outputting a signal to the outside, and is configured to output a signal according to the measurement result of the measuring device 8.
- the liquid crystal screen 9 and the status display lamp 10 are not necessarily required for the measuring device 8.
- the detected value of the ground fault current 14 detected by the sensor 6 is transmitted to the measuring device 8 through the sensor connecting cable 11.
- the detected value of the ground fault current 14 is compared with a first threshold 15 set in the measuring device 8 in advance. If the detected value is equal to or greater than the first threshold 15, an alarm signal is output from the information output terminal 13 to the outside.
- the detection state is displayed by the liquid crystal screen 9 and the state display lamp 10 provided in the measuring device 8. Further, when the signal value is equal to or greater than the second threshold value 16, a cutting operation signal is transmitted from the measuring device 8 to the circuit breaker 5 through the circuit breaker opening signal line 12, and the circuit breaker 5 is turned off.
- the failure state is displayed by the liquid crystal screen 9 provided in the measuring device 8 and the state display lamp 10.
- the measuring device 8 includes information processing means 81 inside.
- the information processing means 81 is constituted by a CPU (Central Processing Unit), and can process information by itself without any exchange of information with the outside. For this reason, by providing the measuring device 8 in the branch unit 1, it is possible to monitor and detect electric leakage and ground fault for each branch. In addition, the number of wires between devices at the time of field installation can be reduced as compared with the case where a ground fault protection relay is installed outside. Further, by providing the measuring device with a display function and a signal output function, it is possible to display when a failure occurs and to output a signal to the outside.
- a CPU Central Processing Unit
- FIG. 3 is a schematic diagram showing the configuration of the branch unit 1 according to the second embodiment.
- the branch unit 1 and the conductor 2 of the bus duct are connected by a cable 4.
- One terminal of the cable 4 is connected to the conductor 2 of the bus duct with the junction 3 as an input terminal.
- the cable 4 is branched into a plurality of parts, and the branched cable 4 is provided with a circuit breaker 5 and a sensor 6, respectively.
- a plurality of other terminals of the cable 4 are configured as output terminals 7 so that a load side cable is connected thereto.
- a sensor 6 provided in each branched cable 4 detects a current flowing through the cable 4 and outputs a detection value to the measuring device 8.
- the measuring device 8 is provided with a liquid crystal screen 9 and a status display lamp 10 and is configured to display the operating state of the measuring device 8.
- Each of the plurality of sensors 6 and the measuring device 8 are connected to each other by a sensor connecting cable 11, and a detection value of each sensor 6 is sent to the measuring device 8.
- the plurality of circuit breakers 5 and the measuring device 8 are connected to each other by a circuit breaker opening signal line 12 so that the circuit breaker 5 is turned off according to a signal from the measuring device 8.
- the measuring device 8 is provided with an information output terminal 13 for outputting a signal to the outside, and is configured to output a signal according to the measurement result of the measuring device 8.
- the liquid crystal screen 9 and the status display lamp 10 are not necessarily required for the measuring device 8.
- a plurality of branch circuit breakers 5 are housed in the branch unit 1, and a sensor 6 is provided for each breaker 5, and signals from the plurality of sensors 6 are received.
- the monitoring is performed by one measuring device 8.
- a single measuring device 8 monitors the ground fault currents of a plurality of branches, and as shown in FIG. 2, the detected values of the ground fault current signals 14 by the sensors 6, the first threshold value 15 and the first threshold value 15 The threshold value 16 of 2 is compared, an alarm is output when the first threshold value is 15 or more, and the circuit breaker 5 is turned off when the second threshold value is 16 or more.
- each current value is collected from the sensor 6 for a plurality of branched circuits. Further, the information output terminal 13 is provided in the measuring device 8 so that remote monitoring is possible. This is a configuration common to the first embodiment and the second embodiment.
- the detected value of the ground fault current 14 detected by the sensor 6 of a certain branch circuit is transmitted to the measuring device 8 via the sensor connecting cable 11, and the detected value of the ground fault current 14 is set in the measuring device 8 in advance. If the first threshold value is 15 or more, the alarm signal is output to the outside via the information output terminal 13 for outputting the signal to the outside, and the liquid crystal screen 9 provided in the measuring device 8 and the state The detection state is displayed by the display lamp 10. Further, when the detected value of the detected ground fault current 14 becomes a signal value equal to or higher than the second threshold value 16, the interruption in the branch circuit that has detected the signal via the circuit breaker opening signal line 12.
- a disconnection operation signal is transmitted to the device 5 so that the circuit breaker 5 is turned off, and a failure state is displayed by the liquid crystal screen 9 and the state display lamp 10 provided in the measuring device 8. Note that the alarm output and the circuit breaker 5 disconnection operation are performed only for the branch circuit in which an abnormality has occurred.
- one branch unit 1 a plurality of cables 4 are branched, and a circuit breaker 5 and a sensor 6 are provided for each of the branched cables 4, and a plurality of circuits can be measured by one unit.
- the measuring device 8 the installation space of the branch unit 1 is reduced, and the number of devices to be used is reduced.
- the number of branches is described as three circuits in order to simplify the drawing, but the number of branch circuits is not particularly limited.
- Embodiment 3 As a third embodiment, a usage example of the information output terminal 13 shown in the first and second embodiments will be described with reference to FIG.
- FIG. 4 shows a configuration in the case where the load is cooled using the information obtained from the information output terminal 13. That is, a plurality of branch units 1 are connected to the bus duct conductor 2, and a load 18 is connected to each branch unit 1 by the cable 17. A current 19 corresponding to the load is supplied to each connected load 18. As described in the first embodiment and the second embodiment, the state of the current 19 is measured by the measuring device 8 and the data is transmitted from the information output terminal 13 to an external monitoring device or the like. In response to the signal, a monitoring device or the like identifies a load with high power consumption and controls the cooling air volume 20. Thereby, it is possible to concentrate and cool loads with high power consumption.
- any constituent element of the embodiment can be appropriately changed or omitted within the scope of the invention.
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Abstract
Description
この発明は、直流電力の配電システムなどに使用されるバスダクトの分岐ユニットに関するものである。 This invention relates to a branch unit of a bus duct used in a DC power distribution system.
電力配電システムでは回路の電力監視や保護のため保護装置が設けられている。一般に、工場、ビル、データセンター等における設備機器への電源の供給状態を監視するため受電盤や分電盤によって受電および分岐配線を構成し、受電盤および分電盤において電力を計測することによって電力の配電状態を監視している。 In the power distribution system, a protection device is provided to monitor and protect the circuit power. In general, to monitor the supply status of power to equipment in factories, buildings, data centers, etc., configure power reception and branch wiring with power distribution boards and distribution boards, and measure power at the power distribution boards and distribution panels. The power distribution status is monitored.
一方、電力需要の増加に比較的容易に対応できる電力幹線システムとして、バスダクトを使用し、バスダクトに接続可能な分岐ユニットを設けることで、分岐配線が行われている。 On the other hand, branch wiring is performed by using a bus duct and providing a branch unit that can be connected to the bus duct as a power trunk system that can relatively easily cope with an increase in power demand.
このバスダクトによる配電方法は、直流回路にも適用することができるため、データセンターなどにおける直流配電システムにも用いられている。
分電盤や配電盤を設けることなく、バスダクトと分岐ユニットを使用して直流電力を配電するシステムであっても、安全の観点から配電線路の過負荷、特に地絡に対する保護が必要である。故障検知のために、バスダクトの分岐前の配電盤に保護リレーを設けて、故障を検知することができるが、この場合には故障発生個所がどの分岐部分であるのかの特定が難しく、効率的でない。また、分岐配線後の負荷設備を収納するスペースに保護リレーを設けることもできるが、収納スペースが減ってしまうため、収納効率が悪くなるといった問題がある。
Since this bus duct power distribution method can be applied to a DC circuit, it is also used in a DC power distribution system in a data center or the like.
Even in a system that distributes DC power using a bus duct and a branch unit without providing a distribution board or a distribution board, it is necessary to protect against an overload of the distribution line, particularly a ground fault, from the viewpoint of safety. For fault detection, it is possible to detect a fault by installing a protective relay on the switchboard before the branch of the bus duct. . Moreover, although a protection relay can be provided in the space for storing the load equipment after branch wiring, there is a problem that the storage efficiency is deteriorated because the storage space is reduced.
バスダクトによって配電を行う電源供給システムにおいて、バスなどの配線接続の異常を監視するために、バスダクトに着脱可能な分岐負荷引出用のプラグインユニットを設け、このプラグインユニット内の電力計測装置によって分岐された回路の電圧値および電流値を含む情報を取得し、別に計測される受電点における電圧値および電流値の情報に基づいて配線の接続部の異常の有無を監視するものが特許文献１に提案されている。 In a power supply system that distributes power through a bus duct, in order to monitor abnormalities in wiring connections such as buses, a plug-in unit for branch load extraction that can be attached to and detached from the bus duct is provided, and branching is performed by a power measuring device in the plug-in unit. Japanese Patent Application Laid-Open No. 2004-133867 obtains information including the voltage value and current value of a circuit that has been measured and monitors whether there is an abnormality in the connection portion of the wiring based on information on the voltage value and current value at a power receiving point measured separately. Proposed.
バスダクトによる配電システムにおいて、特許文献１の提案のように、受電点における電圧値および電流値と、個々の分岐された回路の電圧値および電流値の情報を収集して異常を監視する構成では、分岐の回路からの配線の引き回しが複雑になるという問題があった。また、分岐の回路が増設されるたびに情報の処理を変更させる必要があり、保守における作業が複雑になるという問題があった。
In the distribution system using bus ducts, as proposed in
この発明は、このような問題を解決するために、分岐ユニットに地絡保護機能を設け、分岐回路毎に故障検知と保護を行いつつ、効率的に空調の運用を行うことを目的とする。 In order to solve such problems, an object of the present invention is to provide a ground fault protection function in a branch unit, and to efficiently operate air conditioning while detecting and protecting each branch circuit.
この発明は、バスダクトの配電システムのバスダクト用分岐ユニットの構成として、バスダクトの導体に接続される入力端子と負荷に接続される出力端子との間を接続するケーブル、前記ケーブルによる電路に設けられ電路を遮断する遮断器、前記ケーブルを流れる電流値を検出する電流センサ、および前記電流センサの検出値から地絡を検出して前記遮断器を切操作する計測装置を備え、バスダクト用分岐ユニット毎に地絡に対応した処置ができるようにしたものである。 The present invention provides a bus duct branch unit of a bus duct power distribution system, a cable connecting an input terminal connected to a conductor of the bus duct and an output terminal connected to a load, and an electric circuit provided in an electric circuit by the cable Circuit breaker, a current sensor for detecting the current value flowing through the cable, and a measuring device for detecting the ground fault from the detected value of the current sensor and operating the circuit breaker, and for each branch unit for bus duct It is designed to be able to deal with ground faults.
この発明によれば、バスダクトを使用した直流電力の配電システムにおいて、分岐ユニット毎に独立して地絡への対応が可能となるため、分岐電路が増設されても、問題がなくなる。 According to the present invention, in a DC power distribution system using a bus duct, it becomes possible to cope with a ground fault independently for each branch unit, so that no problem occurs even if a branch circuit is added.
この発明の実施の形態について、以下に詳細を説明する。 Details of the embodiment of the present invention will be described below.
実施の形態１
この発明の実施の形態１の構成について、図１に基づいて説明する。
図１は、分岐ユニット１の構成を示した概略図である。分岐ユニット１とバスダクトの導体２は、ケーブル４で接続される。ケーブル４の一方の端子は、ジャンクション３を入力端子として、バスダクトの導体２に接続される。ケーブル４には、遮断器５およびセンサ６が設けられている。ケーブル４の他方の端子は、出力端子７として、負荷側ケーブルが接続されるように構成されている。センサ６は、ケーブル４を流れる電流を検出し、計測装置８に検出値を出力する。計測装置８には液晶画面９と状態表示ランプ１０が設けられており、計測装置８の動作状態を表示するように構成されている。
The structure of
FIG. 1 is a schematic diagram showing the configuration of the
センサ６と計測装置８とはセンサ接続用ケーブル１１によって接続されており、このセンサ接続用ケーブル１１によってセンサ６の検出値が計測装置８に送られる。また、計測装置８と遮断器５との間は、遮断器開放用信号線１２によって接続されており、計測装置８からの信号に応じて遮断器５が切操作されるように構成されている。さらに、計測装置８には外部に信号を出力するための情報出力端子１３が設けられており、計測装置８の計測結果に応じて、信号を出力するように構成されている。
The
なお、この発明の実施の形態１において、計測装置８には、液晶画面９や状態表示ランプ１０が、必ずしも必要ではない。
In the first embodiment of the present invention, the
この発明の実施の形態１の動作を、図１および図２に基づいて説明する。センサ６によって検出された地絡電流１４の検出値は、センサ接続用ケーブル１１を通して計測装置８に送信される。その地絡電流１４の検出値は、予め計測装置８に設定された第１の閾値１５と比較され、第１の閾値１５以上であれば、警報信号が、情報出力端子１３から外部へ出力される。また、計測装置８に設けられた液晶画面９、および状態表示ランプ１０により検出状態が表示される。さらに、第２の閾値１６以上の信号値となった場合には、計測装置８から遮断器開放用信号線１２を通じて遮断器５に切操作信号が送信され、遮断器５が切状態となると共に、計測装置８に設けられた液晶画面９、および状態表示ランプ１０により故障状態が表示される。
The operation of the first embodiment of the present invention will be described with reference to FIG. 1 and FIG. The detected value of the
計測装置８は、内部に情報処理手段８１を備えている。この情報処理手段８１は、ＣＰＵ（Ｃｅｎｔｒａｌ Ｐｒｏｃｅｓｓｉｎｇ Ｕｎｉｔ）によって構成されており、外部との情報のやり取りがなくても装置単独で情報を処理することが可能である。このため、計測装置８を分岐ユニット１に設けることで、分岐毎に漏電や地絡の監視・検出を行うことが可能となる。また、外部に地絡保護リレーを設置する場合と比較して、現地据付時の機器間の配線本数を減らすことが可能となる。さらには、計測装置に表示機能と信号出力機能を持たせることにより、故障発生時に表示を行うと共に、外部へ信号を出力することが可能となる。
The
実施の形態２
この発明の実施の形態２の構成について、図３に基づいて説明する。図３は、実施の形態２による分岐ユニット１の構成を示した概略図である。分岐ユニット１とバスダクトの導体２は、ケーブル４で接続される。ケーブル４の一方の端子は、ジャンクション３を入力端子として、バスダクトの導体２に接続されている。ケーブル４は、複数に分岐されており、分岐されたケーブル４には、それぞれ遮断器５およびセンサ６が設けられている。ケーブル４の複数の他方の端子は、出力端子７として、負荷側ケーブルが接続されるように構成されている。それぞれの分岐されたケーブル４に設けられたセンサ６は、ケーブル４を流れる電流を検出し、計測装置８に検出値を出力する。計測装置８には液晶画面９と状態表示ランプ１０が設けられており、計測装置８の動作状態を表示するように構成されている。
The structure of
複数のセンサ６のそれぞれと計測装置８とは、それぞれセンサ接続用ケーブル１１によって接続されており、それぞれのセンサ６の検出値が計測装置８に送られる。また、複数の遮断器５と計測装置８との間は、それぞれ遮断器開放用信号線１２によって接続されており、計測装置８からの信号に応じて遮断器５が切操作されるように構成されている。さらに、計測装置８には外部に信号を出力するための情報出力端子１３が設けられており、計測装置８の計測結果に応じて、信号を出力するように構成されている。
Each of the plurality of
なお、この発明の実施の形態２においても、計測装置８には、液晶画面９や状態表示ランプ１０が、必ずしも必要ではない。
この発明の実施の形態２では、分岐ユニット１の内部に、複数の分岐回路用の遮断器５を収納し、遮断器５毎に対応してセンサ６を設け、これら複数のセンサ６の信号を１台の計測装置８で監視する構成としている。ここでは、計測装置８が１台で複数の分岐の地絡電流を監視し、図２に示したと同様に、それぞれのセンサ６による地絡電流信号１４の検出値と第１の閾値１５および第２の閾値１６とを比較し、第１の閾値１５以上で警報を出力、第２の閾値１６以上で遮断器５を切操作するように構成している。なお、警報出力、および遮断器５の切操作は、異常が発生した分岐回路のみ行う構成としている。また、計測装置８においては、複数に分岐された回路について、それぞれの電流値をセンサ６から収集している。
また、計測装置８に情報出力端子１３を持たせることによって、遠隔からの監視が可能な構成としている。これは、実施の形態１、および実施の形態２共通の構成である。
In the second embodiment of the present invention, the
In the second embodiment of the present invention, a plurality of
Further, the
この発明の実施の形態２の動作を、図２および図３に基づいて説明する。ある分岐回路のセンサ６により検出された地絡電流１４の検出値が、センサ接続用ケーブル１１を介して計測装置８に送信され、その地絡電流１４の検出値が予め計測装置８に設定された第１の閾値１５以上であれば、警報信号が外部へ信号を出力するための情報出力端子１３を経由して外部へ出力されると共に、計測装置８に設けられた液晶画面９、および状態表示ランプ１０により検出状態が表示される。また、検出された地絡電流１４の検出値が、第２の閾値１６以上の信号値となった場合には、遮断器開放用信号線１２を介して、信号を検出した分岐回路にある遮断器５に切操作信号が送信され、遮断器５が切状態となると共に、計測装置８に設けられた液晶画面９、および状態表示ランプ１０により故障状態が表示される。なお、警報出力、および遮断器５の切操作は、異常が発生した分岐回路のみ行われる。
The operation of the second embodiment of the present invention will be described with reference to FIGS. The detected value of the ground fault current 14 detected by the
この実施の形態２においては、一つの分岐ユニット１内において、ケーブル４を複数に分岐し、分岐したケーブル４のそれぞれに遮断器５とセンサ６を設け、１台で複数の回路計測が可能な計測装置８を設けることで、分岐ユニット１の設置スペースを削減すると共に、使用する機器の点数を削減している。
なお、この発明の説明においては、図面を簡略化するため、分岐数を３回路で記載しているが、分岐回路数については、特に制限されるものではない。
In the second embodiment, in one
In the description of the present invention, the number of branches is described as three circuits in order to simplify the drawing, but the number of branch circuits is not particularly limited.
実施の形態３
実施の形態３として、実施の形態１および実施の形態２において示した情報出力端子１３の使用例について図４を用いて説明する。
図４は、この情報出力端子１３から得た情報を利用して、負荷の冷却を行う場合の構成を示している。すなわち、バスダクト導体２には複数の分岐ユニット１が接続され、それぞれの分岐ユニット１にはケーブル１７によって負荷１８が接続される。それぞれ接続されている負荷１８には、負荷に応じた電流１９が供給される。この電流１９の状態は、実施の形態１および実施の形態２において説明したように、計測装置８によって計測され、そのデータが情報出力端子１３から外部の監視装置等に送信される。その信号を受けて、監視装置等によって、消費電力が高い負荷を特定し、冷却の風量２０を制御する。これによって、消費電力の高い負荷を集中して冷却することができる。
As a third embodiment, a usage example of the
FIG. 4 shows a configuration in the case where the load is cooled using the information obtained from the
なお、この発明は、その発明の範囲内において、実施の形態の任意の構成要素を適宜、変更または省略することが可能である。 In the present invention, any constituent element of the embodiment can be appropriately changed or omitted within the scope of the invention.
Claims (5)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| PCT/JP2017/008544 WO2018158942A1 (en) | 2017-03-03 | 2017-03-03 | Branching unit for bus duct |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| PCT/JP2017/008544 WO2018158942A1 (en) | 2017-03-03 | 2017-03-03 | Branching unit for bus duct |
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| Publication Number | Publication Date |
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| WO2018158942A1 true WO2018158942A1 (en) | 2018-09-07 |
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| Application Number | Title | Priority Date | Filing Date |
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| PCT/JP2017/008544 Ceased WO2018158942A1 (en) | 2017-03-03 | 2017-03-03 | Branching unit for bus duct |
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| WO (1) | WO2018158942A1 (en) |
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| GB2609090A (en) * | 2021-07-08 | 2023-01-25 | Cummins Power Generation Inc | Systems and methods for providing ground fault protection on direct current power feeds of engine components |
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| JP2014204545A (en) * | 2013-04-04 | 2014-10-27 | 富士電機株式会社 | Power measuring device and power measuring system |
| JP2014202572A (en) * | 2013-04-04 | 2014-10-27 | 富士電機株式会社 | Power measurement device and power measurement system |
| US20150070820A1 (en) * | 2013-09-06 | 2015-03-12 | Eaton Corporation | Modular bus plug apparatus |
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| JP2014204545A (en) * | 2013-04-04 | 2014-10-27 | 富士電機株式会社 | Power measuring device and power measuring system |
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| CN112670974A (en) * | 2019-10-14 | 2021-04-16 | 通用汽车环球科技运作有限责任公司 | Fault isolation, prediction and mitigation for vehicle component electrical power circuits |
| CN112670974B (en) * | 2019-10-14 | 2024-06-11 | 通用汽车环球科技运作有限责任公司 | Fault isolation, prediction and mitigation for vehicle component electric power circuits |
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