| 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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| 02/11/1988 | WO1988001108A1 Driving circuit for an electric consumer |
| 02/11/1988 | WO1988001077A1 Universal solid state power controller |
| 02/11/1988 | WO1988001075A1 Current-limiting circuit |
| 02/10/1988 | EP0255659A1 Electronic overcurrent tripping relay |
| 02/10/1988 | EP0255658A1 Device for influencing a switching apparatus |
| 02/10/1988 | CN86210795U Household energy-saving overvoltage protector |
| 02/10/1988 | CN86207820U Simple and reliable electronic reclosing device |
| 02/10/1988 | CN86200176U Automatic power network disconnecting device avoiding backward power supply for a self-providing power plant |
| 02/09/1988 | US4724391 Method for determining the time of reclosing a circuit breaker and device for carrying out this method |
| 02/03/1988 | EP0255505A1 Control and monitoring device for electrical power distribution installation |
| 02/03/1988 | EP0254992A2 Alternating current power loss detector |
| 02/03/1988 | CN87200476U Overvoltage crowbar |
| 02/02/1988 | US4723189 Negative sequence detector for a continuous wave frequency transducer |
| 01/28/1988 | DE3624353A1 Method and device for monitoring fuses in an intermediate-circuit converter |
| 01/26/1988 | US4722059 Programmed overcurrent protection control apparatus and method of operating the same |
| 01/26/1988 | US4722024 Device for detecting excess-current in a direct-current generator with controlled rectifier |
| 01/26/1988 | US4722021 Safety circuit for hand tools, and method for safe operation thereof |
| 01/26/1988 | US4722018 Blocked condenser airflow protection for refrigeration systems |
| 01/20/1988 | EP0253009A1 Inverse-time relay |
| 01/19/1988 | US4720758 Load dependent current limiter for the power supply of a multi-module electronic system |
| 01/14/1988 | WO1988000406A1 Circuit protector |
| 01/14/1988 | DE3623424A1 Method for switching off a single-phase or multi-phase electrical switching installation (switch gear) and a device for switching off |
| 01/13/1988 | EP0252693A1 Earth leakage protective circuit |
| 01/13/1988 | EP0252541A1 Electronically controlled electrical overcurrent automator |
| 01/13/1988 | CN87201745U Protecting type fusing plug |
| 01/13/1988 | CN87200479U Protective device for leakage of electricity and overvoltage |
| 01/12/1988 | US4719580 Detection and location of a fault point based on a travelling wave model of the high voltage transmission line |
| 01/12/1988 | US4719555 Electric power control apparatus with first and second fixed time intervals |
| 01/12/1988 | US4719531 Overcurrent protective circuit for modulated-conductivity type MOSFET |
| 01/07/1988 | EP0250932A1 Power supply system |
| 01/07/1988 | DE3621589A1 Circuit for supplying voltage to an electrical module |
| 01/06/1988 | CN86104447A Electric welding machine electricity saving security switch |
| 01/05/1988 | US4717985 Circuit breaker with digitized solid-state trip unit with inverse time tripping function |
| 12/31/1987 | CN87208813U Over-voltage protection socket for household electric appliances |
| 12/31/1987 | CN87208113U Automatic disconnector in power-off |
| 12/30/1987 | WO1987007987A1 Electronic control system, in particular for a printer |
| 12/30/1987 | CN86104241A Toroidal core a.c. magnetic biasing circuit |
| 12/29/1987 | US4716488 Primary switched-mode power supply unit |
| 12/29/1987 | US4716487 Apparatus for monitoring motor winding leakage |
| 12/29/1987 | US4716372 Circuit arrangement for monitoring the current supply of an electric consumer |
| 12/26/1987 | CN87202630U Power-saving and life-prolonging socket for remote-controlled colour television |
| 12/22/1987 | US4714975 Self-contained ground fault test feature in circuit breaker |
| 12/16/1987 | EP0249215A1 Digital calculation type differential relay |
| 12/16/1987 | EP0248849A1 Adaptive switching circuit |
| 12/16/1987 | CN86210693U Electricity saving switch |
| 12/15/1987 | US4713720 Fast acting solid state AC circuit breaker |
| 12/15/1987 | US4713719 Fast acting overcurrent protector and method |
| 12/15/1987 | US4713718 Microprocessor based motor protective relay with maximum number of starts per time interval limiter |
| 12/15/1987 | US4713607 Current sensing circuit |
| 12/12/1987 | CN86209229U Simple protector for refrigerator |
| 12/12/1987 | CN86208691U Power leakage protective plug with alarm |
| 12/09/1987 | EP0248320A1 Fault current detector |
| 12/09/1987 | CN86209713U Autoprotection power-saving switch in the case of power-off |
| 12/09/1987 | CN86105323A Full-automatic electric shock safety equipment |
| 12/08/1987 | US4712151 System for detection of ground faults in circuit breakers |
| 12/05/1987 | CN86209849U Electricity leakage protection switch |
| 12/05/1987 | CN86207483U Electricity leakage protector |
| 12/02/1987 | EP0247289A1 Error protection for a branch of a medium voltage transformer |
| 12/02/1987 | EP0247080A1 Device and method of protecting circuits against changes in operating conditions |
| 12/02/1987 | CN86107664A 100 a multi-function electrical leakage disconnector |
| 12/01/1987 | US4710845 Circuit breaker with solid-state trip unit with sampling and latching at the last signal peak |
| 12/01/1987 | US4710844 Electronic circuit breaker trip function adjusting circuit |
| 12/01/1987 | US4710843 Selectable integrating characteristic timer |
| 12/01/1987 | US4710841 System for production of induction machines against damage from residual voltage effects |
| 11/25/1987 | EP0246769A2 Electric motor underload protection system |
| 11/25/1987 | EP0246644A2 Device for recording current-impulses which go through the earth-circuit of overvoltage arresters in high-voltage networks |
| 11/25/1987 | EP0246463A1 Circuit arrangement for recording a fault current |
| 11/25/1987 | CN87206118U Automotic energy-saving protector for refrigerator |
| 11/24/1987 | US4709320 Low voltage shutdown circuit |
| 11/24/1987 | US4709296 Protection arrangement for a telephone subscriber line interface circuit |
| 11/24/1987 | US4709295 Digital protective relay system |
| 11/24/1987 | US4709292 Trouble detector apparatus for an air-conditioner including a counter and a timer |
| 11/19/1987 | EP0245819A2 Fast acting solid state ac circuit breaker |
| 11/17/1987 | US4707761 Method and apparatus for detecting the rate of rise of direct current |
| 11/17/1987 | US4707760 Mains protection device |
| 11/17/1987 | US4707759 Universal fault circuit interrupter |
| 11/17/1987 | US4707758 Fail-safe system in a power regulation circuit for an automotive electronic circuit |
| 11/11/1987 | EP0244649A1 Method and device for protecting a power tramsmission line |
| 11/11/1987 | CN87103164A Solid state instantaneous trip apparatus for current-limit circuit breaker |
| 11/11/1987 | CN86202359U Step-by-step interlocking device |
| 11/11/1987 | CN86108252A Energy-saving type multifunctional electronic thermorelay |
| 11/10/1987 | US4706160 Noise tolerant fast acting optical overcurrent protector and method |
| 11/10/1987 | US4706158 Circuit breaker with self-contained electronic trip actuator and undervoltage release control circuit |
| 11/10/1987 | US4706156 Protection apparatus |
| 11/10/1987 | US4706154 Circuit arrangement for protecting a CRT and associated circuitry from damage due to arcing |
| 11/10/1987 | US4706153 Leakage detecting device for electrical appliance |
| 11/07/1987 | CN86207848U Fully automatic multipurpose electric protection device |
| 11/07/1987 | CN86200183U Automatic protector of refrigerator against instantaneous power-off, undervoltage or overvoltage |
| 11/05/1987 | WO1987006777A1 Protection system for electrically-operated devices |
| 11/05/1987 | DE3614552A1 Protection switching apparatus in installation technology |
| 11/04/1987 | EP0244284A1 Static instantaneous tripping unit for a limiting circuit breaker |
| 11/04/1987 | EP0243412A1 Intertripping system |
| 11/04/1987 | CN87200227U Over-voltage protector for field breakdown |
| 11/04/1987 | CN87200083U Multifunctional safeguard for electrical equipments |
| 11/04/1987 | CN87100748A Protector for leakage of electricity and loss of phase |
| 11/04/1987 | CN85107841A Security switch without threshold |
| 11/03/1987 | US4704652 Hybrid electrical power controller |
| 10/31/1987 | CN86210241U Combined automatic switching-off apparatus for overvoltage proctecting |
| 10/28/1987 | EP0242759A2 Current limiter for constant current for switching driving devices |
| 10/28/1987 | CN86207845U Integrated circuit (ic) short-circuit automatic protector |