公开(公告)号：US5216352A

公开(公告)日：1993-06-01

申请号：US619844

申请日：1990-11-29

申请人： George H. Studtmann ,  Donald H. Ward

发明人： George H. Studtmann ,  Donald H. Ward

IPC分类号： G05F1/445 ,  G01S1/00 ,  G01S19/02 ,  G01S19/21 ,  H02H3/06 ,  H02H3/093 ,  H02H9/00 ,  H02M5/293

CPC分类号： G01S19/02 ,  G01S19/21 ,  H02H3/066 ,  H02H3/0935 ,  H02H9/001 ,  H02M5/293 ,  Y10S323/901 ,  Y10S323/908

摘要： A solid state circuit interruption arrangement monitors a current path to provide protection to both a load and a solid state switch. The arrangement includes an energy absorber for absorbing energy from the current path in response to the solid state switch interrupting the current path, and a control circuit for periodically generating the interrupt signal to interrupt the current path for prescribed intervals and to control the current supplied to the load between a maximum current level and a minimum current level.

摘要翻译： 固态电路中断装置监视当前路径以向负载和固态开关提供保护。 该装置包括：能量吸收器，用于响应于中断电流路径的固态开关吸收来自电流通路的能量;以及控制电路，用于周期性地产生中断信号以中断电流路径达规定的间隔，并且控制提供给 最大电流电平和最小电流电平之间的负载。

公开(公告)号：US5097380A

公开(公告)日：1992-03-17

申请号：US400256

申请日：1989-08-25

申请人： Richard J. Moran

发明人： Richard J. Moran

IPC分类号： H02H3/06

CPC分类号： H02H3/063

摘要： The sectionalizer control provides a restraint signal responsive to a harmonic current which exceeds a threshold current for less than a preset time.

摘要翻译： 分段控制器提供响应超过阈值电流小于预设时间的谐波电流的约束信号。

公开(公告)号：US4899247A

公开(公告)日：1990-02-06

申请号：US215731

申请日：1988-07-06

申请人： John S. Stewart

发明人： John S. Stewart

IPC分类号： H02H3/06 ,  H02H7/00

CPC分类号： H02H3/06 ,  H02H7/008

摘要： An auto-recloser for a power line has a high voltage closing coil (12) for closing the main contact (14) in the power line, the closing coil being energized via a non-latching switching (18) in turn controlled by a low voltage closing coil (20). A time closing pulse is applied to the low voltage coil (20) to close switch (18) for a very short time period. A coil protection (24) monitors the status of the main contants (14) and if these have not closed after a preselected time period of typically 100 ms then the protection circuit opens a normally closed switch in series with the low voltage coil (20) to prevent further closing pulses being applied in further attempts to close the main contacts (14).

摘要翻译： 用于电力线的自动重合器具有用于闭合电力线中的主触点（14）的高电压闭合线圈（12），闭合线圈通过非锁定开关（18）被依次控制为低电平 电压闭合线圈（20）。 将时间关闭脉冲施加到低电压线圈（20）以在非常短的时间段内闭合开关（18）。 线圈保护（24）监视主要持续人（14）的状态，并且如果它们在通常为100ms的预选时间段之后没有关闭，则保护电路打开与低压线圈（20）串联的常闭开关， 以防止进一步关闭脉冲被进一步尝试关闭主触点（14）。

公开(公告)号：US4724391A

公开(公告)日：1988-02-09

申请号：US696264

申请日：1985-01-30

申请人： Leopold Blahous

发明人： Leopold Blahous

IPC分类号： H02H3/06 ,  H02J3/04 ,  H02J3/42 ,  G01R31/02

CPC分类号： H02J3/42 ,  H02H3/06

摘要： A method for reclosing a temporarily opened circuit breaker in a manner which assures that generation of unwanted overvoltage stresses is avoided during the reclosure process. An oscillating line voltage typically develops in a shunt-compensated line after a circuit breaker connecting the line to a voltage source is opened. When the circuit breaker is reclosed the source voltage and the oscillating voltages must be properly phased to avoid the overstressing problem. In operation, the polarities of the feed voltage and the oscillating line voltage are detected and the instant when the circuit breaker may be reclosed is calculated. The periods T.sub.L and T.sub.S of the line voltage and the feed voltage are measured. Also measured is the time .DELTA.T which elapses from a zero crossing of the line voltage waveform to a subsequent zero crossing of the feed voltage waveform having the same phase angle as that of the line voltage zero crossing. The circuit breaker is reclosed upon satisfying the relationship:.vertline.nT.sub.L -(.DELTA.T+mT.sub.S).vertline..ltoreq.(T.sub.L -T.sub.S)/2where m, n are natural numbers which are sequentially entered in the above equation.

摘要翻译： 一种以确保在重新闭合过程期间避免产生不想要的过电压应力的方式重新闭合临时断路器的方法。 在将线路连接到电压源的断路器断开之后，振荡线路电压通常在分流补偿线路中产生。 当断路器重新闭合时，源电压和振荡电压必须正确分阶段，以避免过应力问题。 在操作中，检测馈电电压和振荡线电压的极性，并计算断路器可能重新闭合的瞬间。 测量线路电压和馈电电压的周期TL和TS。 还测量了从线电压波形的过零点到具有与线电压零交叉相同的相位角的馈电电压波形的后续过零点所经过的时间DELTA T. 断路器在满足以下关系时重新闭合：| nTL-（DELTA T + mTS）|

公开(公告)号：US4710841A

公开(公告)日：1987-12-01

申请号：US790151

申请日：1985-10-23

申请人： Gerald W. Bottrell

发明人： Gerald W. Bottrell

IPC分类号： H02H3/06 ,  H02H7/08

CPC分类号： H02H3/06 ,  H02H7/08 ,  Y10T307/729 ,  Y10T307/97

摘要： Protection of induction motors and generators is provided to allow rapid reclosure of the power supply or fast transfer from one power supply to an alternate supply. A switching sequence is disclosed in which motor stator windings are short circuited immediately following interruption of the supply voltage. Said short circuit quickly discharges to a safe value the energy stored in the rotor of the induction machine, allowing the short circuit to be removed and safe reconnection to the power supply to be accomplished without further delay.

摘要翻译： 提供感应电机和发电机的保护，以便快速重新关闭电源或从一个电源快速传输到另一个电源。 公开了一种开关顺序，其中电机定子绕组在电源电压中断之后立即短路。 所述短路快速放电到能够存储在感应电机的转子中的能量的安全值，从而允许短路被去除并且与电源的安全重新连接以便进一步延迟。

公开(公告)号：US4268787A

公开(公告)日：1981-05-19

申请号：US52004

申请日：1979-06-25

申请人： Albert H. Sloan

发明人： Albert H. Sloan

IPC分类号： H02H3/06 ,  H02H3/20 ,  H02H3/247 ,  B62D63/04 ,  H02J1/00 ,  H02J3/00

CPC分类号： H02H3/247 ,  H02H3/066 ,  H02H3/207

摘要： An adjustable speed propulsion engine for a boat also drives an electric generator which supplies electric power to an electric load circuit on the boat. A solid state electronic control circuit senses when generator voltage departs from a voltage "window" or range defined by preselected low and high voltages (as a result of a departure in engine speed from a cruise speed range to some lower or high speed) and operates a contactor to disconnect the generator from the load circuit to prevent low or high voltage damage to electrical equipment on board. The electronic control circuit operates the contactor to reconnect the generator to the load circuit only when generator voltage rises to a preselected initial turn-on voltage which is above the preselected low voltage but below the normal rated voltage of the generator. The electronic control circuit includes time delay means to prevent a transient low voltage condition ("flicker") from causing disconnection of the generator from the load circuit.

摘要翻译： 用于船的可调速推进发动机还驱动向船上的电负载回路供电的发电机。 固态电子控制电路检测发生器电压何时脱离由预选的低电压和高电压限定的电压“窗口”或范围（由于发动机速度从巡航速度范围偏离到某种较低或高速），并且操作 接触器将发电机与负载电路断开，以防止对电气设备的低压或高压损坏。 电子控制电路操作接触器，只有当发电机电压上升到高于预选的低电压但低于发电机的正常额定电压的预选初始接通电压时，才将发生器重新连接到负载电路。 电子控制电路包括用于防止瞬态低电压状况（“闪烁”）引起发电机与负载电路断开的时间延迟装置。

公开(公告)号：US4234904A

公开(公告)日：1980-11-18

申请号：US058617

申请日：1979-07-18

申请人： Kjell T. Fahlesson

发明人： Kjell T. Fahlesson

IPC分类号： H02H3/06 ,  H01H47/26

CPC分类号： H02H3/06 ,  Y10T307/469

摘要： A process for the protection of electrical systems upon return of power after power interruptions, through the immediate disconnection of secondary consuming units by an audio-frequency control receiver, and the subsequent reconnection thereof in timed sequence. The audio-frequency control receivers have, in addition to a normal control path, a second path, through which, upon return of the voltage, the switch relay for secondary consuming units is disconnected upon reaching 2/3 of the system voltage. The process may be implemented through the use of a two-state D.C. relay, which is controlled by a secondary path including a cold lead to the system voltage. The process may alternatively be implemented through the use of a two-state A.C. relay which is controlled through a half-wave secondary path including a capacitor/resistor parallel circuit.

摘要翻译： 用于在电源中断之后通过音频控制接收器立即断开次级消耗单元的电力中断后保护电气系统的过程，以及随后按照时序重新连接。 除了正常的控制路径之外，音频控制接收机还具有第二路径，当达到电压的2/3时，二次消耗单元的开关继电器在电压返回时被断开。 该过程可以通过使用两状态直流继电器来实现，其由包括系统电压的冷引导线的次级路径控制。 该过程可以替代地通过使用通过包括电容器/电阻器并联电路的半波次级路径控制的双态交流继电器来实现。

公开(公告)号：US4048663A

公开(公告)日：1977-09-13

申请号：US654423

申请日：1976-02-02

申请人： Winfred R. Lemke

发明人： Winfred R. Lemke

IPC分类号： H02H1/00 ,  H02H3/04 ,  H02H3/06 ,  H02H3/08 ,  H02H3/093 ,  H02H7/085 ,  H02H7/08

CPC分类号： H02H3/083 ,  H02H1/00 ,  H02H3/044 ,  H02H3/06 ,  H02H3/093 ,  H02H7/085

摘要： A self-powered solid state overload relay having current transformers energized by current to a motor to be protected. The transformer has secondary windings connected through diodes to charge a capacitor in a circuit which senses the magnitude of motor current and capacitors in a trip-reset circuit which causes the circuit to be interrupted when the motor current exceeds a pre-programmed value. The diodes in capacitor charging circuits are poled so that the capacitor in the sensing circuit and the capacitor trip-reset circuit are charged by opposite polarity rectified half wave current pulses. The cores of the transformers are sized and impedances are included in the charging circuits to cause the capacitors in the trip-reset circuit to be fully charged before the capacitor in the sensing circuit is charged to a level which would cause the relay to operate to interrupt the motor circuit and the cores of the transformers to saturate in one direction on their associated hysteresis loops when the capacitors in the trip-reset circuit are being charged and in the opposite direction after the capacitor in the sensing circuit is charged.

公开(公告)号：US4040116A

公开(公告)日：1977-08-02

申请号：US637829

申请日：1975-12-04

申请人： Donald Charles Sheldon

发明人： Donald Charles Sheldon

IPC分类号： H02H3/06 ,  H02H3/24 ,  H02H9/02 ,  H02H7/127

CPC分类号： H02H3/06 ,  H02H3/24 ,  H02H9/02

摘要： A short circuit detector is provided for a compact power supply system in which a plurality of power supplies may be operated in parallel. The detector senses when a voltage drop in a bus indicates a possible short and then energizes solid state devices to turn the system off for a prescribed period of time. After the prescribed period of time has passed, the system will attempt to restart. If the ground has been cleared, system operation will be restored. If not, the system will again be shut down for the prescribed period.

公开(公告)号：US3962611A

公开(公告)日：1976-06-08

申请号：US578827

申请日：1975-05-19

申请人： Bruce Jeffrey Miller

发明人： Bruce Jeffrey Miller

IPC分类号： G06F1/24 ,  G06F1/30 ,  H02H3/06 ,  H03H7/30

CPC分类号： H02H3/066 ,  G06F1/24 ,  G06F1/30

摘要： The present disclosure describes electrical circuit means for providing an automatic power restart for unattended electrical equipment, such as computer cabinets, after an AC power failure and subsequent power restoration. The restart function is performed without interfering with the normal cabinet power sequencing during attended operation or maintenance. The circuit which utilizes a latch-in type relay to "remember" the last manually selected power control setting has general utility in new installations, as well as being adaptable to existing cabinet power systems.

摘要翻译： 本公开描述了用于在AC电源故障和随后的电源恢复之后为无人值守的电气设备（例如计算机机柜）提供自动功率重启的电路装置。 在参加操作或维护期间，不会干扰正常的机柜电源排序，执行重新启动功能。 利用闩锁式继电器“记住”最后一个手动选择的功率控制设置的电路在新的安装中具有通用性，并且适用于现有的柜式电力系统。