| 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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| 08/30/1989 | CN2043795U Multifunctional protector for electricity leakage |
| 08/30/1989 | CN2043794U Domestic protector for user of power supply |
| 08/30/1989 | CN2043793U Voltage relay with high rate |
| 08/30/1989 | CN2043792U Protector for electricity leakage |
| 08/29/1989 | US4862312 Circuit breaker with overcurrent protection |
| 08/29/1989 | US4862308 Power bus fault detection and protection system |
| 08/23/1989 | EP0328838A1 Control device for a DC motor, especially one for the control of openings in a vehicle |
| 08/23/1989 | EP0207086B1 Circuit for monitoring the electric current supply of a consumer |
| 08/23/1989 | CN2043431U Electric overcurrent timing autocontrol device |
| 08/23/1989 | CN1035025A Intelligent monitor |
| 08/22/1989 | US4860154 Device for protecting an integrated circuit against overload and short circuit currents |
| 08/22/1989 | US4860153 Current sensing device |
| 08/22/1989 | US4860146 Differential current protection circuit breaker |
| 08/22/1989 | CA1258703A1 Current-sensing arrangement and method for a circuit- interrupter control circuit |
| 08/16/1989 | CN2043021U Vector difference type electric shock protector |
| 08/16/1989 | CN2043020U One-way leakage of electricity protection switch |
| 08/16/1989 | CN2043019U Protector for electric leakage |
| 08/16/1989 | CN2043018U Multifunction integrated circuit general protector for household electric appliance |
| 08/16/1989 | CN1034834A Judge circuit for digital circuit cutout |
| 08/16/1989 | CN1034833A Frequency doubling circuit and frequency square circuit for digital circuit cutout |
| 08/15/1989 | US4858058 Circuit breaker including selectively operable long-time-delay tripping circuit |
| 08/15/1989 | US4858057 Multiphase tripping device with short-circuit detection |
| 08/15/1989 | US4858054 Protective circuits and devices for the prevention of fires |
| 08/15/1989 | US4857985 MOS IC reverse battery protection |
| 08/15/1989 | US4857896 Polyphase circuit fuse condition indicating device |
| 08/15/1989 | US4857854 Digital fault locator |
| 08/15/1989 | CA1258489A1 Solid-state trip device with test circuit for an electrical circuit breaker |
| 08/10/1989 | DE3802324A1 Electronic trip-indicator for mounting on fuses |
| 08/09/1989 | CN2042638U Electricity leakage protector |
| 08/09/1989 | CN2042637U Multi-function power quantitative measuring & controlling device |
| 08/09/1989 | CN1034639A Solid-state trip device of molded case circuit breaker |
| 08/08/1989 | US4855860 Ground-fault protected ballast |
| 08/08/1989 | US4855722 Alternating current power loss detector |
| 08/08/1989 | US4855653 Obstruction detection in automatic portal control apparatus employing induction motor power factor |
| 08/02/1989 | EP0326459A1 Static tripping device with a circuit for instantaneous tripping independent of the supply voltage |
| 08/02/1989 | EP0326334A2 Circuit breaker with over temperature protection and low error 12t calculator |
| 08/02/1989 | EP0326237A2 Control circuit with validity-determining arrangement |
| 08/02/1989 | CN2042249U Fully-automatic protector for domestic appliance |
| 08/02/1989 | CN2042248U Power-rationing device made of ics |
| 08/02/1989 | CN1034450A Open-type load switch with multiple protective functions |
| 08/01/1989 | US4853820 Electronic circuit breaker systems |
| 08/01/1989 | US4853819 Overcurrent tripping unit for a circuit breaker |
| 07/27/1989 | DE3801776A1 Protection circuit for a load resistor (load), which is connected to a motor vehicle battery, and its switching output stage |
| 07/26/1989 | EP0324805A1 I?2 t MONITORING CIRCUIT |
| 07/26/1989 | CN2041865U Automatic control switch for electric power |
| 07/26/1989 | CN2041863U Protective device for quantity of electricity |
| 07/26/1989 | CN2041862U Multifunction safety appliances for household appliances |
| 07/26/1989 | CN2041861U Reaction type multifunction magnitude of current safety appliances |
| 07/26/1989 | CN2041860U Multifunction protector for magnitude of current |
| 07/26/1989 | CN1034274A 智能化保护器 Intelligent protection |
| 07/25/1989 | US4851952 Circuit for prevention of undesired operation in multiple power drivers |
| 07/25/1989 | US4851950 Electrical apparatus for magnetothermal and differential protection |
| 07/25/1989 | US4851949 Brush bounce detection in active shaft ground system |
| 07/25/1989 | CA1257891A1 High speed current limiting circuit interrupter |
| 07/19/1989 | EP0324376A2 Electronic overcurrent trip-system |
| 07/19/1989 | EP0324012A1 Shorted-coaxial-cable detector for local-area networks. |
| 07/19/1989 | CN2041459U Electromagnetic type leakage protector |
| 07/19/1989 | CN2041458U Controlling center for household power supply |
| 07/19/1989 | CN2041457U Automatic off switch for service interruption |
| 07/19/1989 | CN2041456U Protector for electric appliances |
| 07/19/1989 | CN2041452U Safety protection socket for electric leakage |
| 07/18/1989 | US4849850 Circuit for protecting electronic devices against overload |
| 07/18/1989 | US4849849 Apparatus for detecting malfunctions of an electrical device, and methods of constructing and utilizing same |
| 07/18/1989 | US4849848 Circuit breaker |
| 07/18/1989 | US4849847 Power supply switch for wafer scale applications |
| 07/18/1989 | US4849845 Transient suppressor |
| 07/13/1989 | WO1989006452A1 System for protection servo amplifier |
| 07/13/1989 | DE3744615A1 Method and device for the fault location of short circuits and earth leaks in high- and medium-voltage networks |
| 07/12/1989 | CN2041080U Multifunction combination safety cut-out |
| 07/12/1989 | CN2041079U Integrated device for mining explosion-proof electric-drill transformer |
| 07/12/1989 | CN2041074U Electric outlet |
| 07/12/1989 | CN1033880A Fault detection |
| 07/11/1989 | US4847725 Circuit breaker |
| 07/11/1989 | US4847723 Volt-per-hertz protection apparatus |
| 07/11/1989 | US4847720 Power supply output protection circuitry with signaling |
| 07/06/1989 | DE3842920A1 Digital protective relay |
| 07/05/1989 | EP0323379A1 Attenuator of excess voltage with a double effect |
| 07/05/1989 | EP0323221A2 Instantaneous voltage drop detector for DC power source |
| 07/05/1989 | EP0322518A1 Digital protective relay |
| 07/04/1989 | US4845594 Reclosing relay with nonvolatile memory of operations |
| 06/29/1989 | WO1989006060A1 Voltage fault detector |
| 06/29/1989 | WO1989006059A1 Current fault protection system |
| 06/29/1989 | WO1989005982A1 Power failure detector circuit |
| 06/28/1989 | EP0151565B1 Phase relay for ac power transmission line protection |
| 06/28/1989 | CN2040279U Electricity-steal preventing multi-functional electric appliance protecting switch |
| 06/27/1989 | CA1256551A1 Primary switched-mode power supply unit |
| 06/26/1989 | EP0216816A4 Circuit for dissipating stored inductive energy. |
| 06/22/1989 | DE3814251C1 Protective circuit for capacitive loads |
| 06/21/1989 | CN2039882U Voltage stabilizer and load protector |
| 06/21/1989 | CN1033498A Safety circuit for charged casing of electric devices |
| 06/20/1989 | US4841405 Protective relaying apparatus for providing fault-resistance correction |
| 06/20/1989 | US4841404 Pump and electric motor protector |
| 06/15/1989 | WO1989005535A1 Fault detection |
| 06/14/1989 | EP0320409A1 Static release with external supply |
| 06/14/1989 | CN2039475U Simple all-mechanical phase-failure protector |
| 06/14/1989 | CN2039474U Fully automatic protector for refrigerator |
| 06/14/1989 | CN2039473U Fullyautomatic energy-saving protector |
| 06/14/1989 | CN1033427A Protector circuit against electric leakage |
| 06/13/1989 | US4839770 Control circuit with validity-determining arrangement |
| 06/13/1989 | CA1255782A1 Microprocessor controlled circuit breaker trip unit |