| 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) |
|---|
| 02/28/1990 | CN2053807U Current limiter |
| 02/28/1990 | CN2053806U Safety protection device for electric refrigerator |
| 02/28/1990 | CN2053805U Multifunction single-phase norm power supply arrangement |
| 02/28/1990 | CN1040117A Distance current divider type current fault testing safety device |
| 02/27/1990 | US4905117 Circuit and method for DC content protection of parallel VSCF power systems |
| 02/27/1990 | US4905115 For use in a vehicle |
| 02/27/1990 | CA1266301A1 Detection of high resistance faults in electric power supply network |
| 02/22/1990 | DE3827881A1 Circuit for monitoring electrical parameters of a voltage supply |
| 02/22/1990 | DE3827856A1 Method and arrangement for monitoring an electric line |
| 02/21/1990 | EP0243412A4 Intertripping system. |
| 02/21/1990 | CN2053390U Safety power supply |
| 02/21/1990 | CN2053389U Current-type electric leakage protector for multi-circuit high voltage |
| 02/21/1990 | CN2053388U Electric leakage protector with high-frequency current method |
| 02/21/1990 | CN2053342U Multifunctional electric apparatus for avoiding or indicating fraudulent use |
| 02/21/1990 | CN1006944B Seeurity switch without threshold |
| 02/21/1990 | CN1006940B Arcless circuit interrupter |
| 02/20/1990 | US4903163 Directional harmonic overcurrent relay device |
| 02/20/1990 | US4903161 Surge suppression for low voltage signal circuits |
| 02/20/1990 | CA1266117A1 Automatic ground fault protection for an electric power system |
| 02/14/1990 | CN2052971U Uver-voltage protector |
| 02/14/1990 | CN1039665A Bidirectional dc power controller with fault protection |
| 02/13/1990 | US4901184 Trip control apparatus of circuit breaker |
| 02/07/1990 | CN2052581U Potentiostat for all-automatic save energy refrigerator |
| 02/07/1990 | CN2052539U Detector for protector of leakage of electricity |
| 02/06/1990 | US4899383 Apparatus and method for secure digital communication |
| 02/06/1990 | US4899247 Auto recloser coil burn-out protection |
| 02/06/1990 | US4899246 Solid-state trip device comprising a zero sequence current detection circuit |
| 02/01/1990 | DE3923594A1 Earth current monitor for three=phase drive motor - has two parallel signal processing circuits controlling automatic cut=out device |
| 01/31/1990 | EP0352987A2 Solid state circuit protector |
| 01/31/1990 | EP0352951A2 A.C. generator fault detector |
| 01/31/1990 | CN2052161U 电流限制器 Current Limiter |
| 01/31/1990 | CN2052155U Multifunctional protective socket |
| 01/30/1990 | US4897756 Add-on ground fault module |
| 01/30/1990 | US4897557 Electronic control system, in particular for a printer |
| 01/25/1990 | WO1990000830A1 Conversion circuit for limiting inrush current |
| 01/23/1990 | US4896254 Protective power controller |
| 01/23/1990 | US4896244 Feed forward compensation circuitry and switching logic driver with overcurrent protection incorporating same |
| 01/23/1990 | US4896241 Directional comparison blocking protective relay system |
| 01/23/1990 | CA1264802A1 Motor control method and apparatus therefor |
| 01/17/1990 | EP0350824A2 Selective overcurrent protection device |
| 01/17/1990 | EP0350639A2 Device for limiting the input current of a power supply |
| 01/17/1990 | EP0350511A1 System for protection servo amplifier |
| 01/17/1990 | CN1006511B Information data output arrangement for electric power system |
| 01/11/1990 | DE3823182A1 Circuit arrangement for short circuit monitoring |
| 01/11/1990 | DE3823101A1 Redundant tripping device |
| 01/11/1990 | DE3823099A1 Device for protecting from fault currents |
| 01/11/1990 | DE3823098A1 Device for protecting from fault currents |
| 01/11/1990 | DE3823097A1 Selective master switch |
| 01/11/1990 | DE3823096A1 Device for protecting from fault currents |
| 01/10/1990 | EP0350299A2 Bi-directional DC power controller with fault protection |
| 01/10/1990 | EP0350028A2 Circuit breaker |
| 01/10/1990 | EP0349930A2 Switch with pre-alarm means |
| 01/10/1990 | EP0349929A2 Switch with pre-alarm means |
| 01/10/1990 | EP0349880A1 Fault current protection device |
| 01/10/1990 | EP0349836A2 A guarded electronic circuit from reversal of its supply battery polarity |
| 01/10/1990 | EP0349750A1 Protection circuit against compensation and overvoltages for electronic equipment |
| 01/10/1990 | CN2051024U Selective protector for leakage of high voltage electricity for mines |
| 01/10/1990 | CN2051023U Adjustable automatic current limiter |
| 01/10/1990 | CN2051022U Protective type load power limiter |
| 01/10/1990 | CN1038720A Convenient multi-functional contactor |
| 01/09/1990 | CA1264369A1 Fast acting solid state ac circuit breaker |
| 01/03/1990 | EP0348673A1 Process for the protection of an electrical protection object |
| 01/03/1990 | EP0348587A2 Operating failure monitoring circuitry for an electronic apparatus constituting an integrated circuit |
| 01/03/1990 | EP0348478A1 Voltage fault detector |
| 01/03/1990 | CN1038551A Solid-state trip apparatus comprise circuit of instantaneous trip independent of power voltage |
| 12/27/1989 | EP0348128A1 Shock-proof mains voltage supply outlet and method |
| 12/27/1989 | EP0347787A2 Protective circuit breaker for an overload current and short circuit |
| 12/27/1989 | CN2050228U Multi-functional protector for domestic electricity |
| 12/27/1989 | CN1006264B Alarm system for overload or short |
| 12/26/1989 | US4890184 Molded case circuit breaker actuator-accessory unit |
| 12/26/1989 | US4890183 Device for detecting cutoff and short circuit defects in at least one electrical circuit portion |
| 12/20/1989 | CN2049828U 安全插头 Safety plug |
| 12/19/1989 | US4888661 Circuit and apparatus for the protected supply of a load by means of static and electromechanical switches |
| 12/19/1989 | US4888660 Shock-proof mains voltage supply outlet and method |
| 12/14/1989 | WO1989012345A1 Controller and a network controller system |
| 12/13/1989 | EP0346219A1 Trigger switch mounted in an electrical installation |
| 12/13/1989 | CN2049442U Solid contactor for three phase power |
| 12/13/1989 | CN2049425U Dual-safety cut-out |
| 12/13/1989 | CN2049424U Multifunction safety device capable of presetting parameters |
| 12/13/1989 | CN2049423U Combined protective device of color tv set and refrigerator |
| 12/13/1989 | CN2049422U Fully-automatic protective device for household electric appliance |
| 12/13/1989 | CN2049421U Safety monitoring arrangement for main supply |
| 12/12/1989 | US4887205 Gate control system |
| 12/12/1989 | EP0248849A4 Adaptive switching circuit. |
| 12/06/1989 | EP0344850A2 Safety device for detecting ground current and safety electrical plug equipped with said device |
| 12/06/1989 | EP0344253A1 Polyphase circuit fuse condition indicating device |
| 12/06/1989 | CN2049032U Electronic multifunctional automatic protection plug |
| 12/06/1989 | CN2049031U Electric protector |
| 12/06/1989 | CN2049030U Energy saving protector for refrigerator |
| 12/06/1989 | CN1006032B Fast spark detector |
| 12/05/1989 | US4885656 Digital protective relay |
| 12/05/1989 | US4885655 Water pump protector unit |
| 12/05/1989 | CA1263706A1 Dc ground fault detection |
| 11/29/1989 | EP0343536A1 Circuit for controlling the power supply of an electrical load, having a device for detecting a short-circuit of the load |
| 11/29/1989 | EP0343390A2 Motor starter with protection against short-circuit |
| 11/29/1989 | CN2048633U Leakage branch relay |
| 11/29/1989 | CN2048632U Anti-stealing current limiter |
| 11/29/1989 | CN2048587U Paper card electric meter |
| 11/28/1989 | US4884164 Molded case electronic circuit interrupter |
| 11/22/1989 | CN2048248U Low voltage distributor for subscriber's line |