| 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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| 03/01/1994 | US5291208 Incipient lightning detection and device protection |
| 03/01/1994 | US5291099 Neon sign power supply circuit with automatic power interruption |
| 02/25/1994 | CA2104623A1 Ground fault detector and associated logic for an electronic ballast |
| 02/23/1994 | CN2157613Y Multifunctional emergency protection circuit arrangement |
| 02/23/1994 | CN2157612Y Integrated domestic electric appliances protector |
| 02/17/1994 | WO1994003956A1 Reverse-polarity protection by means of a protecting element having a reduced surface |
| 02/17/1994 | WO1994003954A1 Fault detection device on a buried electric power distribution network |
| 02/17/1994 | WO1994003952A1 Reverse-polarity protection with reduced element surface |
| 02/17/1994 | WO1994003820A1 Electric arc detector |
| 02/16/1994 | EP0582801A1 Circuit for voltage regulation |
| 02/16/1994 | CN2156609Y Double-protection multi-function pulse type leakage protector |
| 02/16/1994 | CN2156608Y Overvoltage protector |
| 02/16/1994 | CN2156597Y Socket type leakage safety device |
| 02/16/1994 | CN2156512Y Electricity measuring automatic controller |
| 02/16/1994 | CN1082261A Single-phase coincident breaker using phase loss as criterion |
| 02/15/1994 | US5287048 Electronic gas valve power interruption switch |
| 02/09/1994 | EP0581993A1 Circuit arrangement for the control of a load and the detection of line interruption |
| 02/09/1994 | CN2155650Y Integrated protecting device for kilovolt illumination signal in coal mine |
| 02/08/1994 | US5285344 Overvoltage protection device |
| 02/08/1994 | CA2075556A1 D.c. logic device |
| 02/03/1994 | WO1994002896A1 A fault-tolerant computer system |
| 02/03/1994 | DE4225458A1 Differential current measurement using summing current ring-core transformer - has magnetoresistive sensor in first flux gap in core and provides pre-adjustment by flux from permanent magnet and yoke connected across second air gap |
| 02/02/1994 | EP0581639A1 Circuit for protecting integrated circuit against cuts in power supply |
| 02/02/1994 | EP0581078A2 Electrical distribution device with preventive checking of the state of the load, particularly for civil and industrial users |
| 02/02/1994 | EP0581015A2 Method for determining fault currents on transmission lines and a fault current filter for carrying out the method |
| 02/02/1994 | CN2155093Y Alarm signal instrument for high-voltage electric power substation |
| 02/02/1994 | CN1023668C Bidirectional dc power controller with fault protection |
| 02/01/1994 | US5283708 Overload current protection apparatus |
| 02/01/1994 | US5283553 Switch with pre-alarm means |
| 02/01/1994 | US5283543 Multi-phase current monitoring device |
| 02/01/1994 | US5283421 Electric appliance with safety switching arrangement |
| 01/26/1994 | CN2154545Y Multifunction protective socket for household |
| 01/25/1994 | US5282124 Power unit having overcurrent/undervoltage-responsive protective function |
| 01/20/1994 | WO1994001961A1 Switching arrangement for a communications channel |
| 01/20/1994 | WO1994001960A1 Remotely actuated switch and protection circuit |
| 01/20/1994 | WO1994001909A1 Current limiters in power utility applications |
| 01/20/1994 | DE4223338A1 Overload protection circuit for regulator setting element |
| 01/20/1994 | DE4213443C1 Fuse failure monitoring circuit for AC network protection - compares measured phases of voltages across phase lines infront and behind each fuse |
| 01/20/1994 | CA2139436A1 Switching arrangement for a communications channel |
| 01/20/1994 | CA2139435A1 Remotely actuated switch and protection circuit |
| 01/19/1994 | EP0579561A1 Protection circuit for power components against overvoltages |
| 01/19/1994 | EP0579340A1 Apparatus for providing distance protection and distance measurement for a high voltage transmission line |
| 01/19/1994 | EP0578958A1 Overload protection circuit |
| 01/19/1994 | CN2153894Y Protector for single phase electric tool armature |
| 01/19/1994 | CN2153893Y Double protective pulse type leakage protector |
| 01/19/1994 | CN2153892Y Protector for transformer of electron neon lamp |
| 01/15/1994 | CA2099336A1 Electrical distribution device with preventive checking of the state of the load, particularly for civil and industrial users |
| 01/12/1994 | EP0577660A1 Filter for liquids, in particular internal-combustion engine lubricant oils. |
| 01/12/1994 | EP0445252B1 Device for protecting a fluorescent tube installation |
| 01/12/1994 | CN2153198Y Short fault protector for mine's lamp wire |
| 01/12/1994 | CN2153166Y Comprehensive protector for accumulator electric locomotive |
| 01/12/1994 | CN2153163Y Phase-sequence relay |
| 01/12/1994 | CN2153162Y Transistor phase interruption relay |
| 01/12/1994 | CN2153161Y Multi-time control self-switching protection controller |
| 01/12/1994 | CN2153140Y Protector for low-voltage electricity use |
| 01/12/1994 | CN2153139Y Single-phase automatic knife-switch |
| 01/12/1994 | CN2153137Y Multifunctional three-phase ac contactor |
| 01/11/1994 | US5278747 DC/AC converter with overcurrent protection by temporary shutdown |
| 01/06/1994 | WO1994000899A1 Microprocessor watch-dog monitor for electronic trip units |
| 01/06/1994 | WO1994000862A1 Trip energy monitor |
| 01/06/1994 | WO1994000824A1 Computer-controlled circuit breaker arrangement with circuit breaker having identification circuit |
| 01/06/1994 | CA2115928A1 Computer-controlled circuit breaker arrangement with circuit breaker having identification circuit |
| 01/06/1994 | CA2115358A1 Trip energy monitor |
| 01/05/1994 | EP0577339A1 Overcurrent protection device |
| 01/05/1994 | EP0577228A1 Apparatus for providing distance protection and distance measurement for a high voltage transmission line |
| 01/05/1994 | CN2152332Y Motor protector |
| 01/05/1994 | CN2152330Y Electric monitoring protector for electric appliance computerized safety |
| 01/05/1994 | CN2152329Y 漏电保护器 Leakage protection |
| 12/31/1993 | CA2098365A1 Surge arrester with spring clip assembly |
| 12/29/1993 | EP0576395A1 Protection device for protecting an electrical appliance against overvoltage in the power distribution network |
| 12/29/1993 | EP0576356A1 Circuit for fault-current circuit breaker |
| 12/29/1993 | EP0575639A1 Ground fault circuit interrupter |
| 12/29/1993 | CN2151565Y Complex protector for electric coal drill |
| 12/29/1993 | CN2151562Y Automatic multifunctional safety for preventing charge evasion |
| 12/29/1993 | CN2151561Y Multifunctional open phase protecting module |
| 12/29/1993 | CN2151560Y DC load monitor |
| 12/29/1993 | CN2151547Y Safety socket |
| 12/29/1993 | CN2151546Y Protective socket |
| 12/29/1993 | CN2151537Y Open-phase protector |
| 12/29/1993 | CN1080093A Anti-stealing electricity safety circuit |
| 12/29/1993 | CN1023365C Programmable inverse time delay circuit |
| 12/28/1993 | US5274526 For automatically resetting fuses |
| 12/28/1993 | US5274524 Programmable protection circuit and its monolithic manufacturing |
| 12/22/1993 | EP0513319A4 Display for a circuit breaker trip unit |
| 12/22/1993 | CN2150651Y Protector for broadcasting station using electricity |
| 12/22/1993 | CN2150650Y Multifunction safety controller for power supply |
| 12/22/1993 | CN2150649Y Domestic safety device for warning electroshock and leakage |
| 12/22/1993 | CN2150648Y Resistance type phase-loss protector |
| 12/22/1993 | CN2150647Y Magnetic-starter for transient fault delay interruption of power system |
| 12/22/1993 | CN2150646Y Loaded automatic current-delivery device |
| 12/22/1993 | CN1023275C Multifunctional circuit-protecting device |
| 12/21/1993 | US5272585 System to prevent electrical shorts by a microprocessor breaker box |
| 12/21/1993 | US5272440 Isolation monitors and measuring device for an electrical power system with isolated neutral |
| 12/21/1993 | US5272387 Connecting device of an external electrical power supply source to an aircraft on the ground |
| 12/15/1993 | EP0573596A1 Line disturbance monitor and recorder system |
| 12/15/1993 | CN2149703Y Multi-function double-protction leakage protector for three-phase power-supply |
| 12/15/1993 | CN2149702Y Protective circuit arrangement for domestic electric appliance with time accumulation function |
| 12/15/1993 | CN2149694Y Multi-function safety plug |
| 12/15/1993 | CN2149693Y Multi-function safety plug |
| 12/14/1993 | US5270897 Personnel protection system for electrical power connections |