公开(公告)号：US20140265630A1

公开(公告)日：2014-09-18

申请号：US14205531

申请日：2014-03-12

Applicant: HON HAI PRECISION INDUSTRY CO., LTD. ,  HONG FU JIN PRECISION INDUSTRY (ShenZhen) CO., LTD.

Inventor： HAI-QING ZHOU ,  YI-XIN TU

IPC: G01R21/00 ,  H02J1/00

CPC classification number: H02H11/004 ,  H02H3/265 ,  Y10T307/747

Abstract: A phase detection circuit includes first to third power input modules, first to third power input terminals, an alarm module, first to fifth electronic switches, and a power management module. The power input modules are used to convert pulse signals from a multi-phase power supply into direct current voltages and output the direct current voltages to the first to third electronic switches. When the multi-phase power supply operates abnormally, no direct current voltages are output to the first to third electronic switches and the alarm module alarms.

Abstract translation: 相位检测电路包括第一至第三电力输入模块，第一至第三电力输入端子，报警模块，第一至第五电子开关和电源管理模块。 电源输入模块用于将来自多相电源的脉冲信号转换成直流电压，并将直流电压输出到第一至第三电子开关。 当多相电源异常运行时，不会将直流电压输出到第一至第三电子开关，报警模块报警。

公开(公告)号：US20020027432A1

公开(公告)日：2002-03-07

申请号：US09915655

申请日：2001-07-26

Applicant: Sanyo Electric Co., Ltd.

Inventor： Eiji Oohashi

IPC: G01R025/00

CPC classification number: H02H7/097 ,  H02H11/004

Abstract: A power supply negative-phase detecting circuit (10) for electronic equipment (12) using a three-phase AC power supply source includes a pulse generator (13) for generating a first pulse indicating the phase difference between any pair of two phases of three-phase AC power to be supplied to the electronic equipment and a second pulse indicating the phase difference between another pair of two phases of the three-phase AC power, a differentiating circuit (25) for generating a third pulse from the second pulse in synchronism with the rise-up of the second pulse so that the third pulse has a pulse width smaller than the phase difference between the first and second pulses, and a switching unit (14) for subjecting the first pulse and the third pulse to OR operation and turning on/off the power supply to be supplied to the electronic equipment on the basis of the OR operation result of the first and third pulses.

Abstract translation: 用于使用三相AC电源的电子设备（12）的电源负相位检测电路（10）包括：脉冲发生器（13），用于产生指示任意一对三相 提供给电子设备的相位交流电力和指示三相AC电力的另一对两相之间的相位差的第二脉冲，用于从第二脉冲同步产生第三脉冲的微分电路（25） 其中第二脉冲的上升使得第三脉冲具有小于第一和第二脉冲之间的相位差的脉冲宽度;以及用于使第一脉冲和第三脉冲进行“或”运算的切换单元（14），以及 基于第一和第三脉冲的或运算结果，打开/关闭要提供给电子设备的电源。

公开(公告)号：US5062278A

公开(公告)日：1991-11-05

申请号：US636429

申请日：1990-12-31

Applicant: Akiyoshi Sugiyama

Inventor： Akiyoshi Sugiyama

IPC: F04B49/10 ,  F25B49/02 ,  H02H7/09 ,  H02H7/097 ,  H02H11/00 ,  H02P23/00

CPC classification number: H02H11/004 ,  H02H7/09

Abstract: An air-conditioning apparatus includes a control circuit adapted to detect, from among first to third line voltages of a three-phase AC power supply, the second or third line voltage not synchronizing with a serial signal. The control circuit detects a difference between a phase angle of the detected line voltage and that of the serial signal, compares the difference with set values and determines, by that comparison, whether the three-phase AC power supply is in a positive-phase sequence or in a negative-phase sequence. The operation of a compressor is inhibited when the negative-phase sequence is determined by the control circuit.

Abstract translation: 空调装置包括控制电路，适于从三相AC电源的第一至第三线电压中检测与串行信号不同步的第二或第三线电压。 控制电路检测检测到的线路电压的相位角与串行信号的相位角之间的差异，将该差与设定值进行比较，并通过该比较确定三相交流电源是否处于正相序列 或以负相序列。 当由控制电路确定负相序时，抑制压缩机的操作。

公开(公告)号：US4825328A

公开(公告)日：1989-04-25

申请号：US062134

申请日：1987-06-12

Applicant: Lowell F. Izaguirre, Sr.

Inventor： Lowell F. Izaguirre, Sr.

IPC: H02H3/20 ,  H02H11/00 ,  H02H3/24

CPC classification number: H02H11/004 ,  H02H3/207

Abstract: A three phase electrical load protection device is disclosed including an input transducer for detecting each phase voltage and the direction of rotation of the phases of a three phase power system. A control monitor is disclosed for monitoring signals from the input transducer representative of the highest and lowest phase voltages and the direction of rotation of the phases for controlling an output device for disconnecting the electrical load when improper supply conditions are detected and monitored.

Abstract translation: 公开了一种三相电负载保护装置，其包括用于检测三相电力系统的各相的各相电压和相位方向的输入变换器。 公开了用于监测来自表示最高和最低相位电压的输入换能器的信号的控制监视器以及用于当检测和监视不适当的供给条件时用于控制用于断开电负载的输出装置的相位的旋转方向。

公开(公告)号：US4667264A

公开(公告)日：1987-05-19

申请号：US839821

申请日：1986-03-12

Applicant: Sigeru Yamazaki ,  Mitsuhito Nakayama

Inventor： Sigeru Yamazaki ,  Mitsuhito Nakayama

IPC: H02K17/30 ,  H02H7/097 ,  H02H11/00 ,  H02K5/132 ,  H02K11/00 ,  H02K17/32 ,  H02P1/40 ,  H02P23/00 ,  H02H3/353

CPC classification number: H02H11/004 ,  Y10T307/839

Abstract: An apparatus for controlling the starting of a three phase load in its normal phase sequence. The apparatus is connected to the load in a predefined manner and has input terminals for receiving three phase electric energy through external supply lines. There is provided a device within the apparatus which automatically corrects the phase sequence of the electric energy supplied to the load. An open phase protection device is provided which allows the starting of the load in response to the absence of open phase in the received electric energy, and inhibits the starting of the load in response to the presence of open phase in the received electric energy due to, for example, breaking of an external supply line. In one embodiment, the apparatus is built into a submersible motor-pump assembly. The pump is always initiated to rotate its impeller in a proper direction for pumping, regardless of correct or incorrect phase connections between the external supply lines and the input terminals of the apparatus. The open phase sensor and associated switches prevent a single phase mode of operation of the load.

Abstract translation: 一种用于控制其正常相序中的三相负载起动的装置。 该装置以预定方式连接到负载，并具有用于通过外部电源线接收三相电能的输入端子。 在设备内提供了一种自动校正供应给负载的电能的相序的装置。 提供了一种开放相保护装置，其允许响应于接收的电能中不存在开放相而启动负载，并且响应于由于在接收的电能中存在开放相而导致负载的启动，由于 例如，断开外部电源线。 在一个实施例中，该装置内置于潜水电机 - 泵组件中。 始终启动泵，以便在适当的方向旋转其叶轮以进行泵送，而不管外部电源线和设备的输入端之间的正确或不正确的相位连接如何。 开放相位传感器和相关开关可以防止负载的单相工作模式。

公开(公告)号：US4458283A

公开(公告)日：1984-07-03

申请号：US367007

申请日：1982-04-09

Applicant: Takashi Iida

Inventor： Takashi Iida

IPC: H02H3/13 ,  G01R29/16 ,  H02H11/00 ,  H02H3/253

CPC classification number: H02H11/004

Abstract: A static protective relay at least includes a plurality of current transformers inserted in poly-phase AC power lines, a half-wave rectifying circuit for rectifying the output voltages from said current transformers, wave-shaping circuits for wave-shaping two of the pulsate output voltages from the half-wave rectifying circuit into rectangular wave output voltages, and a negative phase failure detecting circuit including a data flip-flop for detecting the level of the rectangular wave output to be phase-retarded at the instant of rising up of the rectangular wave output to be phase-advanced.

Abstract translation: 静态保护继电器至少包括插入多相AC电力线中的多个电流互感器，用于对来自所述电流互感器的输出电压进行整流的半波整流电路，用于波形整形两个脉动输出 电压从半波整流电路转换为矩形波输出电压，以及负相位故障检测电路，包括用于检测矩形波输出的电平的数据触发器，以便在矩形的上升时刻相位延迟 波输出相位提前。

公开(公告)号：US4084205A

公开(公告)日：1978-04-11

申请号：US727694

申请日：1976-09-28

Applicant: Ulrich Bohnert

Inventor： Ulrich Bohnert

IPC: H02H3/253 ,  H02H7/00 ,  H02H7/09 ,  H02H11/00 ,  H02M7/162 ,  H02H3/26

CPC classification number: H02H7/09 ,  H02H11/004 ,  H02H3/253 ,  H02H7/003 ,  H02M7/1623

Abstract: In a phase monitoring arrangement for a three phase network which supplies a controlled d.c. motor through a controlled converter, a power line dependent discriminator along with R-C circuits forms a smoothed, rectified monitoring voltage which depends on the phase sequence and is sensitive thereto and to phase failure along with a supplementary monitoring voltage dependent only on phase failure, the rectified monitoring voltage and supplementary monitoring voltage being supplied to an evaluating circuit comprising differential comparing amplifiers at which the monitoring voltages are compared with constant reference voltages independent of faults and the output thereof used to control switching means and a current regulator so that in the event of incorrect phase sequence or of a phase failure, the switching means feed a blocking signal which suppresses firing pulses to the controlled converter and the current regulator feeds a control signal to control the converter to its operating limit.

公开(公告)号：US3708719A

公开(公告)日：1973-01-02

申请号：US3708719D

申请日：1971-06-21

Applicant: KITO KK

Inventor： ISHIKAWA S

IPC: H02P3/20 ,  B66C13/23 ,  B66D1/46 ,  B66D1/48 ,  H02H11/00 ,  H02H7/09

CPC classification number: H02H11/004 ,  Y10T307/839

Abstract: A safety device includes a resistance, a condenser and a relay winding which are star-connected across a three-phase source of AC potential providing the supply potential for a three-phase motor which is controlled, as to operation in the normal and reverse directions, by a three-phase magnetic contactor connected to the motor by forward or normal and reverse end limit switches. The safety device further includes a normally closed contact which is opened upon energization of the relay winding, and this contact is connected in series in the control circuit of the electromagnetic contactor. This control circuit is connected to the same single phase as is the series connection of the condenser and the relay winding. If the three-phase source of AC potential does not have the proper phase sequence, or if a single phase is inoperative, the relay winding is sufficiently energized to open the normally closed contact and thus interrupt energization of the magnetic contactor with resultant deenergization of the three-phase motor driving the winch.

Abstract translation: 一个安全装置包括电阻，电容器和继电器绕组，它们跨越三相交流电位源星形连接，为三相电动机提供电位，该电动机被控制在正常和反向工作 由三相电磁接触器通过前进或正反端限位开关连接到电动机。 安全装置还包括常闭触点，该继电器绕组通电时断开，该触点串联连接在电磁接触器的控制电路中。 该控制电路连接到与电容器和继电器绕组的串联连接相同的单相。 如果三相交流电源不具有正确的相序，或单相不工作，则继电器绕组充分通电以打开常闭触点，从而中断电磁接触器的通电，从而导致断电 的三相电机驱动绞车。

公开(公告)号：US3596137A

公开(公告)日：1971-07-27

申请号：US3596137D

申请日：1969-06-04

Applicant: WESTINGHOUSE ELECTRIC CORP

Inventor： KIRSCH ANDREW F

IPC: H02H3/253 ,  H02H11/00 ,  H02H3/26

CPC classification number: H02H11/004 ,  H02H3/253 ,  Y10T307/839

Abstract: A reverse phase and single phase detecting device utilizes a silicon controlled rectifier connected with its main current path between at least two of the phases of the polyphase source to be monitored. The control electrode of the SCR receives its energization from a firing circuit connected to a third phase of the polyphase source. Under normal operating conditions the firing signal is delivered early enough in the interval when the SCR is forward biased that sufficient current is passed through the current path to operate a translating device. Under reverse phase or single phase conditions the SCR does not fire until late in the interval when the SCR is forward biased or it does not fire at all so that the detector is not activated. Preferably the firing circuit comprises a pulse generator adjusted to deliver a triggering pulse through the control electrode of the SCR at an instant which provides a greater separation in the response of the device between normal conditions and reverse or single phase conditions. A second SCR can be placed in series with the first with its control electrode receiving its firing signal from a sample and hold circuit connected across the primary SCR so that the translating device will not be operated should the primary SCR fail as a short circuit.

公开(公告)号：US3467833A

公开(公告)日：1969-09-16

申请号：US3467833D

申请日：1967-03-31

Applicant: STENBERG FLYGT AB

Inventor： SANDGREN JAN ERIK

IPC: H02H11/00 ,  H02H1/04 ,  H01H7/16 ,  H02H3/26

CPC classification number: H02H11/004 ,  Y10T307/839