| Patents for H02H 3 - Emergency protective circuit arrangements for automatic disconnection directly responsive to an undesired change from normal electric working condition, with or without subsequent reconnection (33,031) |
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| 04/28/1999 | CN2316756Y Lighting protector for AC power |
| 04/28/1999 | CN2316754Y Auto-controller for phase sequence of three-phase AC |
| 04/28/1999 | CN2316753Y Full-automatic multifunctional controller for limiting load, over-voltage and electric leakage |
| 04/28/1999 | CN2316752Y Anti-theft apparatus for transforming and distributing line |
| 04/28/1999 | CN2316751Y Universal low-voltage air circuit beaker intelligent controller |
| 04/28/1999 | CN2316743Y High-voltage outdoor closed metering protecting cabinet |
| 04/28/1999 | CN1215508A Device including a thermally protected switching transistor |
| 04/28/1999 | CN1215245A Frequency converter |
| 04/27/1999 | US5898580 Dc/dc converter with a protection circuit |
| 04/27/1999 | US5898557 Switching apparatus |
| 04/27/1999 | US5898556 Protection system for a three-phase distribution transformer insulated in a liquid dielectric |
| 04/27/1999 | CA2151683C Redundant power mixing element with fault detection for dc- to-dc converter |
| 04/24/1999 | CA2250348A1 Control device for switch-breaker apparatus |
| 04/22/1999 | WO1999020083A1 Ground fault protection circuit |
| 04/22/1999 | WO1999019956A1 Slow circuit breaker protection circuit |
| 04/22/1999 | WO1999019781A1 Method and circuit for monitoring the operating condition of electric motors |
| 04/22/1999 | DE19746707A1 Circuit arrangement for automatically setting into operation of, and for monitoring the current supply of, electronic component/apparatus/plant |
| 04/22/1999 | DE19745490A1 Electric motor operation monitoring method |
| 04/21/1999 | EP0910150A2 Circuit device and method for safe monitoring of the controllability of electric motors |
| 04/21/1999 | EP0910149A1 Protective relay system |
| 04/21/1999 | CN2315691Y Protector for automatic breaking by thunder stroke |
| 04/21/1999 | CN2315690Y AC load protector |
| 04/21/1999 | CN2315689Y Protector for three phase electric equipment |
| 04/21/1999 | CN2315688Y Intelligent power arrester |
| 04/20/1999 | US5896302 System and method for providing integrated reclosing of circuit breakers in a power substation |
| 04/20/1999 | US5896262 Arc fault detector with protection against nuisance trips and circuit breaker incorporating same |
| 04/20/1999 | US5895989 Power supply unit and connector connection failure detection method |
| 04/20/1999 | US5895988 Safety system for an electronic device having multiple power inputs |
| 04/15/1999 | WO1999018645A1 Method for monitoring status parameters in a switching mechanism, and corresponding device |
| 04/14/1999 | EP0801832A4 Detection and isolation circuit for a failed bridge power rectifier and an electrical system employing same |
| 04/14/1999 | CN2314505Y Safety protector for electric lines in use |
| 04/14/1999 | CN2314504Y Short circuit protector |
| 04/14/1999 | CN2314503Y A. C. short circuit protector |
| 04/14/1999 | CN2314466Y A. C. contactor with overvoltage protector |
| 04/14/1999 | CN1214154A Ground fault circuit interrupter |
| 04/13/1999 | US5894397 Multi-purpose passive switching device |
| 04/13/1999 | US5894394 Intelligent power switch and switching apparatus |
| 04/13/1999 | US5894392 Power distribution unit with individual GFI modules and a line supervisory circuit |
| 04/13/1999 | US5894174 Protection circuit and method for an electromagnetic interference suppression system |
| 04/08/1999 | WO1999017415A1 Power breaker for power supply and distribution |
| 04/08/1999 | WO1999017413A1 Protective device, especially for protection against lightning |
| 04/08/1999 | DE19743900A1 Fault current circuit breaker for monitoring and interrupting domestic current network |
| 04/08/1999 | DE19743238A1 Electronic fuse circuit for separating consumer from voltage source |
| 04/07/1999 | EP0906651A2 Rotating electrical machine plants |
| 04/07/1999 | CN2313319Y Phase-shortage protection starting controller for three-phase electric appliance |
| 04/07/1999 | CN2313318Y Over-voltage automatic protector |
| 04/07/1999 | CN2313317Y Improved broadcating loudspeaker for alarming |
| 04/07/1999 | CN2313316Y Multifunction domestic-appliance controller |
| 04/06/1999 | US5892647 Overcurrent detection circuit |
| 04/06/1999 | US5892646 Ground fault protection of gas lamp power supplies |
| 04/06/1999 | US5892645 Protection system for power receiving station |
| 04/06/1999 | US5892342 Self-test circuit for a shorted diode protection panel in a diesel electric locomotive |
| 04/01/1999 | WO1999016159A1 Ground safety device for medical ultrasound probes |
| 04/01/1999 | WO1998056095A3 Overcurrent protection circuit |
| 04/01/1999 | DE19744204A1 Over-current trip with display unit e.g. for installing in switch cabinet |
| 04/01/1999 | DE19744011A1 Leistungsschaltereinrichtung zur Energieversorgung und -verteilung Power switch means for power supply and distribution |
| 04/01/1999 | DE19743997A1 Power supply electronic release e.g. for low and medium voltage switchgear and control gear |
| 04/01/1999 | DE19743994A1 Electronic controlled triggering device |
| 03/31/1999 | EP0905927A2 Communication system comprising lightning protection |
| 03/31/1999 | EP0905850A2 Control for an electric motor driven by two phase mains |
| 03/31/1999 | EP0905849A1 Switching device for managing a multi-phase alternating-voltage network having a number of load units |
| 03/31/1999 | EP0905848A1 Earth fault detection circuit having a minimum delay for high fault currents |
| 03/31/1999 | EP0905847A2 Fault-current protective device |
| 03/31/1999 | EP0905846A2 Electronic overcurrent trip device |
| 03/31/1999 | EP0905845A2 Overcurrent trip device with display control depending on the energy |
| 03/31/1999 | EP0905736A1 Control module |
| 03/31/1999 | EP0905500A2 Device for diagnosing defects |
| 03/31/1999 | EP0886903A4 Power dissipation limiter for high frequency switch |
| 03/31/1999 | CN1042771C Circuit device for controlling contactor |
| 03/30/1999 | US5890097 Apparatus for waveform disturbance monitoring for an electric power system |
| 03/30/1999 | US5889940 System and method for reducing the effects of hardware faults in a computer system employing multiple central processing modules |
| 03/30/1999 | US5889643 Apparatus for detecting arcing faults and ground faults in multiwire branch electric power circuits |
| 03/25/1999 | DE19841610A1 Switch trigger unit, e.g. for a circuit breaker and protective relay unit |
| 03/24/1999 | CN2311874Y Automatic regulating load apparatus |
| 03/24/1999 | CN2311873Y Electric dewatering automatic switching control cabinet |
| 03/24/1999 | CN2311867Y Mine anti-explosive switch |
| 03/24/1999 | CN2311866Y Mine anti-explosive switch |
| 03/24/1999 | CN2311855Y Anti-mistrip overcurrent protection controller |
| 03/24/1999 | CN2311854Y Overvoltage and overcurrent automatic cut-off switch |
| 03/24/1999 | CN2311853Y Phase-defect protective connecting device |
| 03/24/1999 | CN1042684C DC power supply circuit |
| 03/24/1999 | CN1042683C Earth leakage unit |
| 03/24/1999 | CN1042682C Ground fault circuit interrupter with immunity to wide band noise |
| 03/23/1999 | US5886860 Circuit breakers with PTC (Positive Temperature Coefficient resistivity |
| 03/18/1999 | WO1999013483A1 Electronic switch for quick, automatic response to current overloads |
| 03/18/1999 | WO1999013350A1 Method and configuration for testing digital protection devices |
| 03/18/1999 | DE19736264A1 Energy-saving apparatus for household and industry |
| 03/17/1999 | EP0902516A2 Ground fault circuit interrupter |
| 03/17/1999 | EP0901706A2 A method and a device for reducing third harmonic phenomena in a rotating electric alternating current machine |
| 03/17/1999 | EP0901698A1 Ground fault protection circuit for a multiple source system |
| 03/17/1999 | CN2311092Y Pulse earth leakage protector |
| 03/16/1999 | US5883578 Loss of potential determination for use in protective relays for electric power systems |
| 03/11/1999 | DE19740425A1 Verfahren und Anordnung zum Testen von digitalen Schutzanordnungen Method and apparatus for testing digital protection arrangements |
| 03/10/1999 | CN2310435Y Double-source electric network power supply cabinet |
| 03/10/1999 | CN2310411Y Microsecond grade overvoltage protector |
| 03/10/1999 | CN2310410Y Passive static voltage, current relay |
| 03/10/1999 | CN1210629A Distance protection method |
| 03/10/1999 | CN1210385A Protector for circuit cut-off overload |
| 03/09/1999 | US5880918 Method and device for monitoring the serviceability of a load |
| 03/09/1999 | US5880678 Warning device for monitoring rotation speed of prime mover |