| 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) |
|---|
| 08/18/1994 | WO1994018736A1 Overcurrent protective circuit and semiconductor device |
| 08/17/1994 | CN2174800Y Domestic voltage loop overvoltage protector |
| 08/16/1994 | CA1331478C Metallic current limiter |
| 08/10/1994 | EP0609898A1 Plug-in ground fault monitor for a circuit breaker |
| 08/10/1994 | EP0609662A1 Method for determining the thermal rigidity of safety switches by consideration of the harmonic waves of the phase currents and device for realization of this method |
| 08/10/1994 | CN2174004Y Silencing, lightning guard, overvoltage and electric leakage protector |
| 08/09/1994 | US5337206 Three phase power monitor |
| 08/04/1994 | WO1994017573A1 Electrical supply safety socket |
| 08/03/1994 | CN2173471Y Domestic universal electricity protector |
| 08/03/1994 | CN2173470Y Protector for electricity leakage |
| 08/03/1994 | CN1025581C Overcurrent relay |
| 08/02/1994 | US5335135 Fault recording system for an electric power trip unit |
| 08/02/1994 | US5335132 Overvoltage sensor with hysteresis |
| 08/02/1994 | US5334912 Ground fault detector and associated logic for an electronic ballast |
| 08/02/1994 | US5334876 Power window or panel controller |
| 08/02/1994 | US5334553 Telecommunication equipment protector |
| 07/27/1994 | EP0607269A1 Device for overload and short-circuit protection in electric plants |
| 07/27/1994 | EP0514454B1 Device for motor and short-circuit protection |
| 07/27/1994 | CN2172923Y Multi-functional single-phase safety switch for electric applinces |
| 07/27/1994 | CN1090096A Safety device for electrical operation |
| 07/26/1994 | US5333105 For use in a vehicle |
| 07/26/1994 | US5332993 Power controlling apparatus with a power failure detecting function |
| 07/26/1994 | CA1331050C Electrical safety socket |
| 07/22/1994 | CA2113915A1 Electrical supply safety socket |
| 07/20/1994 | EP0606284A1 Protection device for signal and power carrying line. |
| 07/20/1994 | CN2172539Y Working frequency supply line anti-theft device |
| 07/20/1994 | CN1089764A Digital protecting relay |
| 07/19/1994 | US5331501 For connecting a load to a power source |
| 07/19/1994 | US5331500 Circuit breaker comprising a card interfacing with a trip device |
| 07/13/1994 | EP0362406B1 System for detecting defective point on power transmission line by utilizing satellite |
| 07/13/1994 | CN2171941Y Solid-state phase lacking protective relay |
| 07/13/1994 | CN2171940Y Overvoltage prolection improved device for protector |
| 07/13/1994 | CN2171939Y Intelligence multifunction load controller |
| 07/13/1994 | CN1089403A Switching arrangement |
| 07/13/1994 | CN1089359A Circuit and apparatus for in-line test of AC circuit |
| 07/06/1994 | EP0605335A1 Electronic trip device comprising a testing device |
| 07/06/1994 | CN2171168Y Electronic power supply switch with automatic protective device for electric equipment |
| 07/06/1994 | CN2171157Y Protective automatic switch for neutral wire |
| 07/05/1994 | US5327318 Telecommunication equipment protector |
| 06/29/1994 | EP0604289A1 Method and device for supplying power to electric motor, particularly for driving a windscreen wiper of a motor vehicle |
| 06/29/1994 | EP0603374A1 Computer-controlled circuit breaker arrangement with circuit breaker having identification circuit |
| 06/29/1994 | EP0560973A4 Communication interface for bus connected circuit breakers |
| 06/29/1994 | CN2170595Y Automatic throw-cut limit protection switch |
| 06/29/1994 | CN2170594Y Distributing box for residential building |
| 06/29/1994 | CN2170588Y 安全检测插座 Safety testing socket |
| 06/28/1994 | US5325062 Apparatus and method for detection of latent faults in redundant systems |
| 06/28/1994 | US5325061 Computationally-efficient distance relay for power transmission lines |
| 06/28/1994 | US5324990 Voltage inverter power conservation circuit |
| 06/22/1994 | EP0612444A4 Personnel protection system for electrical power connections. |
| 06/22/1994 | EP0603088A1 Device for numerical calculation of a symmetrical component of an electric quantity in a three-phase network and relay comprising the same |
| 06/22/1994 | CN2169940Y Leakage, over voltage and over-load protector |
| 06/22/1994 | CN2169939Y Dropping current protector |
| 06/22/1994 | CN2169929Y Leakage safety socket |
| 06/22/1994 | CN1088362A Mult-functional universal contactor |
| 06/21/1994 | USRE34643 Short circuit fault isolation means for electrical circuit arrangements |
| 06/15/1994 | EP0601809A1 Telecommunication equipment protector |
| 06/15/1994 | EP0601660A2 Electronic relay to protect motors and thyristors against symmetric overload, phase unbalance and shortcircuit |
| 06/15/1994 | EP0548129B1 Process for finding the short-circuit impedance of an electric power supply system to be monitored |
| 06/15/1994 | CN2169269Y Brightness controller with automatic short circuit protector |
| 06/15/1994 | CN2169236Y Null line off protector |
| 06/15/1994 | CN2169235Y Phase off protector |
| 06/15/1994 | CN2169234Y Protector against overvoltage, leakage and shock |
| 06/15/1994 | CN1088022A A memory or signature circuit |
| 06/14/1994 | US5321576 Heat flow detector for recessed incandescent fixtures |
| 06/14/1994 | US5321318 Stray current neutralizing method and device |
| 06/14/1994 | CA1330234C Overcurrent protection relay with communications |
| 06/09/1994 | DE4241146A1 Electronic signalling device for monitoring e.g. fuses - has capacitance of piezoceramic sound emitter used as capacitance of RC generator |
| 06/08/1994 | EP0600810A1 Ovenvoltage protection device |
| 06/08/1994 | EP0600751A2 Solid state power controller |
| 06/08/1994 | EP0600072A1 Trip energy monitor |
| 06/08/1994 | EP0600046A1 Microprocessor watch-dog monitor for electronic trip units. |
| 06/08/1994 | CN2168354Y Sourceless capacity type phase-shortage protector for three-phase power source |
| 06/08/1994 | CN2168353Y Explosion-insulating electric drill transformer synthetic device for mining |
| 06/08/1994 | CN2168352Y Phase-relay protective controller |
| 06/07/1994 | US5319515 Circuit protection arrangement |
| 06/07/1994 | US5319514 Digital voltage and phase monitor for AC power line |
| 06/07/1994 | US5319513 Harmonic monitor and protection module |
| 06/05/1994 | CA2110632A1 Overvoltage protection circuit |
| 06/01/1994 | EP0599438A2 Process and device for monitoring periodic voltage signals |
| 06/01/1994 | CN2167465Y Electricity power control device responsive to frequency deviation |
| 06/01/1994 | CN2167464Y Cotrol device for three-phase automatic electric appliance |
| 06/01/1994 | CN2167463Y Control device for frandulence use of electricily without power consumption |
| 06/01/1994 | CN2167462Y Detecting device for leakage of voltage |
| 06/01/1994 | CN2167461Y Low voltage drop sumpling overcurrent measuring device |
| 05/31/1994 | US5317472 Apparatus for insuring the security of output signals from protective relays used in electric power systems |
| 05/26/1994 | WO1994011939A1 Safety shut-off for modular office panels |
| 05/26/1994 | WO1994011937A1 A short-circuit limiting protector |
| 05/26/1994 | WO1994011936A1 Switching arrangement |
| 05/26/1994 | CA2148362A1 Switching arrangement |
| 05/26/1994 | CA2127441A1 A short-circuit limiting protector |
| 05/25/1994 | EP0598292A2 Thyristor valve arrester and DC power transmission thyristor valve using the same |
| 05/25/1994 | CN2166550Y Energy-saving pulse relay |
| 05/25/1994 | CN2166549Y Double-protecting essential safety power source apparatus |
| 05/25/1994 | CN2166534Y Multi-plug receptacle with overcurrent overvoltage protector |
| 05/25/1994 | CN1024733C Driver capable of protecting semiconductor |
| 05/24/1994 | US5315293 Overcurrent detecting method and apparatus |
| 05/24/1994 | US5315256 Fault detection circuit for use in determining the existence of a fault in any one of a plurality of DC loads |
| 05/24/1994 | CA1329828C Method of determining whether power supply or magnetron has failed |
| 05/18/1994 | EP0597746A1 Test device for electrical socket with earth contact and differential protection |
| 05/18/1994 | EP0597272A2 Safety cutoff power window control device |