| 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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| 05/18/1994 | EP0596879A1 Process and arrangement for recognizing defects in power converters. |
| 05/18/1994 | CN2165562Y Overvoltage protector for output loop of electronic instrument |
| 05/18/1994 | CN2165555Y Multifunctional protector for electric appliances |
| 05/18/1994 | CN2165554Y Intelligent phase-interruption overload protection timer |
| 05/18/1994 | CN2165553Y Phase interruption protector |
| 05/18/1994 | CN2165552Y Multifunctional remote-controlled all-shutdown controller for household electric appliances |
| 05/18/1994 | CN2165551Y Phase wire protector for household electric appliances |
| 05/18/1994 | CN2165550Y Safety device for household electric appliances |
| 05/18/1994 | CN2165549Y Multifunctional electricity-use monitor |
| 05/18/1994 | CN2165527Y Universal safety switch |
| 05/17/1994 | US5313112 Low voltage inhibiting circuit for a microcomputer |
| 05/17/1994 | CA2103018A1 High current ground fault circuit interrupter |
| 05/11/1994 | EP0596643A1 Overcurrent protection device with visual indicators for trip and programming functions |
| 05/11/1994 | EP0596474A2 Circuit arrangement for controlled switch-off of a metal-oxide semiconductor field effect transistor |
| 05/11/1994 | CN2164606Y Multi-function electric protector |
| 05/11/1994 | CN2164605Y Phase-loose protector |
| 05/11/1994 | CN2164604Y Multi-function safety current limiter |
| 05/11/1994 | CN2164600Y Multi-purpose three-proof power socket |
| 05/10/1994 | US5311392 Dual processor electric power trip unit |
| 05/05/1994 | DE4312814C1 Fuse monitoring system for AC network - has central evaluation of phase conditions and individual evaluation of phase fuses |
| 05/04/1994 | EP0595603A1 Overcurrent protection device with programmable communications and inactivity feature |
| 05/04/1994 | CN2164123Y Automatic cut-off warning plug for electrical leakage |
| 05/03/1994 | US5309312 Overcurrent protection relay with communications |
| 05/03/1994 | US5309311 Electrical apparatus for differential current protection |
| 05/03/1994 | US5309109 Forcible grounding generation equipment and grounding occurrence detection equipment using the same |
| 04/27/1994 | EP0593588A1 Circuit protection arrangement. |
| 04/27/1994 | CN2163471Y Multifunction anti-stealing power and leakage protector |
| 04/27/1994 | CN2163470Y 3-phase break automatic protector |
| 04/27/1994 | CN2163469Y Safety fire-proof alarming switch for electrical carpet |
| 04/27/1994 | CN2163468Y A.C electricity limiter |
| 04/27/1994 | CN2163467Y Passive protector |
| 04/27/1994 | CN2163461Y Multifunction distributor |
| 04/26/1994 | US5306998 Protection control circuit for a variable speed hoisting device |
| 04/26/1994 | CA2010571C Power transmission and distribution digital protection system |
| 04/20/1994 | EP0592927A2 Control method to limit the driving force of a drive, in particular for a door or a swinging wing and associated security circuit |
| 04/20/1994 | CN2162736Y Voltage-stabilizing rectifier for motorcyle generator |
| 04/20/1994 | CN2162730Y Voltage regulation device with overvoltage under-roll protection |
| 04/20/1994 | CN2162729Y Null line breaking protection device for three-phase four-way power supply system |
| 04/20/1994 | CN1085701A Remotely actuated switch and protection circuit |
| 04/19/1994 | US5305175 Faulted current indicator with protection against temporary overloads and transients |
| 04/19/1994 | US5305174 Method of and device for protecting electrical power system |
| 04/14/1994 | WO1994008380A1 Sensor for registration of leak current |
| 04/14/1994 | WO1994008379A1 Digital protective relay arrangement |
| 04/14/1994 | DE4334386A1 Overcurrent protection for power semiconductor module - includes current detection electrode, transmitting detector signal w.r.t. main current flow over main current path |
| 04/13/1994 | EP0592337A1 Electronic trip device comprising earth protection |
| 04/13/1994 | CN2162022Y Induction phase interruption relay |
| 04/13/1994 | CN2162021Y Automatic protector for three phase AC load phase fault |
| 04/13/1994 | CN2162020Y Low frenquency power supply combined protector |
| 04/13/1994 | CN2162019Y Leakage ultra-temp. control device |
| 04/13/1994 | CN2162010Y Electric protective plug |
| 04/13/1994 | CN2161992Y Automatic protective switch |
| 04/13/1994 | CN1085364A Switching arrangement for a communications channel |
| 04/12/1994 | US5303115 PTC circuit protection device comprising mechanical stress riser |
| 04/12/1994 | US5303114 Overload protection circuit capable of sustaining high inrush current in the load circuit |
| 04/12/1994 | US5303112 Fault detection method and apparatus |
| 04/07/1994 | DE4334162A1 Electric continuous flow water heater - has safety relay between heaters and 3-phase supply, triggered by voltage monitoring unit and water flow monitor |
| 04/06/1994 | EP0591075A1 Electronic trip device for low voltage circuit breaker |
| 04/06/1994 | EP0591011A1 Device for detecting faults on an electric energy distributing underground network |
| 04/06/1994 | EP0590937A2 Electrical switching apparatus with digital trip unit and memory reset |
| 04/06/1994 | EP0590936A2 Electrical switching apparatus with digital trip unit and automatic frequency selection |
| 04/06/1994 | EP0590545A2 Earth leakage or differential current circuit breaker |
| 04/06/1994 | EP0590435A2 Fault current acquiring device, responding to any current, with alternating or pulsating fault current acquiring device, unaffected by DC fault currents |
| 04/06/1994 | EP0590227A1 Stalling detection for direct current motors |
| 04/06/1994 | CN2161011Y Safety isolation transformer |
| 04/06/1994 | CN2161005Y Multifunctional timing electrocontrol box |
| 04/06/1994 | CN2160990Y Multifunctional electricity-saving contactor |
| 04/06/1994 | CN1085019A High-effect long distance power supply and short circuit protecting method for illumination and signal of coal mine well |
| 03/31/1994 | WO1994007254A1 A memory or signature circuit for switchgear |
| 03/31/1994 | DE4303018C1 Determining thermal resistance of safety switches taking account of phase current harmonics - using analogue measurement, computerised digital processing of phase currents and rapid Fourier transformation |
| 03/31/1994 | DE4232476A1 Three=phase network monitoring arrangement for low voltage and phase failure - has single IC component which detects and evaluates each half wave of all phases |
| 03/31/1994 | DE4232104A1 Relay control circuit at set threshold voltage - switches from external to internal voltage supply in event of voltage falling below set threshold level, providing emergency power supply. |
| 03/30/1994 | EP0589797A1 Self testable switching system |
| 03/30/1994 | EP0589374A1 Method and appliance for monitoring an alternating signal |
| 03/30/1994 | EP0589347A2 Circuit breaker and method of controlling the same |
| 03/30/1994 | CN2160162Y Multifunctional controller for household electric appliance |
| 03/30/1994 | CN2160151Y 多功能断路器 Multifunction breaker |
| 03/30/1994 | CN1084679A Main motor driving circuit of toaster |
| 03/30/1994 | CN1024104C Electric shock protector having self-detecting function |
| 03/29/1994 | US5299088 Protective circuit and protective plug for telecommunication installations |
| 03/29/1994 | US5299087 Overload protection circuit |
| 03/24/1994 | DE4244119C1 Protecting relay contacts against overloading - using controlled switch with switching path in parallel with contacts and monitoring elements for load current circuit |
| 03/24/1994 | DE4244116C1 Protecting relay contacts against overloading - using controllable switch with path in parallel with contacts and electronic control |
| 03/23/1994 | EP0588529A2 Fuse or circuit breaker status indicator |
| 03/23/1994 | CN2159626Y Protector for electric motor |
| 03/23/1994 | CN2159624Y Automatic protecting solid delay for loss of phase |
| 03/23/1994 | CN2159618Y Movable safety distributing box |
| 03/22/1994 | US5296996 Device for motor and short-circuit protection |
| 03/17/1994 | WO1994006026A1 Detecting faults in power lines |
| 03/17/1994 | WO1994005551A1 Container for a hanger-supported garment |
| 03/17/1994 | DE4230649A1 Signal correction, esp. of signals with light arcing noise - involves detecting noise patterns and replacing affected signal section with noise free section |
| 03/16/1994 | CN2159077Y Multifunction household power regulating and controlling device |
| 03/16/1994 | CN2159076Y Multifunction leakage break protector |
| 03/16/1994 | CN2159028Y Fault-monitoring device for logical circuit for automobile |
| 03/15/1994 | US5295037 Molded case circuit breaker-process loop unit |
| 03/09/1994 | CN2158572Y Protection contactor for voltage falling or leakage of phase |
| 03/08/1994 | US5293522 Ground fault circuit breaker with test spring/contacts directly mounted to test circuit of printed circuit board |
| 03/08/1994 | US5293295 Digital protective relay apparatus |
| 03/02/1994 | CN2158147Y Protector for electric appliance |
| 03/02/1994 | CN2158087Y Electric current meter |
| 03/01/1994 | US5291365 Power supply with overvoltage protection circuit |