| 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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| 09/14/1988 | CN87216940U Electrical leakage safety plug for domestic electric appliance |
| 09/14/1988 | CN87210379U Multifunctional electricity saving protector |
| 09/14/1988 | CN87207911U Anti electric shock safe device |
| 09/13/1988 | US4771356 Method and apparatus for accommodating power disturbances |
| 09/13/1988 | CA1242022A1 Recloser control with independent memory |
| 09/07/1988 | EP0280759A1 Arrangement for electric energy cables for protection against explosions of gas and/or dust/air mixtures, especially for underground working |
| 09/07/1988 | CN87212580U Multi-function device against stealing electric power of kwh meter |
| 09/07/1988 | CN87209081U Safety switch |
| 09/07/1988 | CN87208421U Domestic electric protector |
| 09/07/1988 | CN87207461U Protective arrangement for phase interruption |
| 09/06/1988 | US4769735 Inverse-time relay |
| 09/06/1988 | CA1241730A1 Circuit breaker with digital solid-state trip unit with optional functions |
| 09/06/1988 | CA1241729A1 Circuit breaker with solid-state trip unit with sampling and latching at the last signal peak |
| 09/06/1988 | CA1241728A1 Circuit breaker with digital solid-state trip unit fitted with a calibration circuit |
| 08/31/1988 | EP0280501A1 Instantaneous voltage drop detector |
| 08/31/1988 | CN87217031U Signal monitor |
| 08/31/1988 | CN87210812U Electricity-limiting theft-proof protective device |
| 08/30/1988 | CA1241426A1 Device for controlling at least one vhv or uhv circuit breaker from a fault signal |
| 08/25/1988 | WO1988006362A1 Electric tool with protecting switch against fault currents |
| 08/24/1988 | EP0279692A2 Circuit interrupter apparatus with a battery backup and reset circuit |
| 08/24/1988 | EP0279691A2 Circuit interrupter apparatus with a selectable display means |
| 08/24/1988 | EP0279690A2 Circuit interrupter apparatus with a style saving rating plug |
| 08/24/1988 | EP0279689A2 Circuit interrupter apparatus with a style saving override circuit |
| 08/24/1988 | EP0279168A2 Circuit for the power supply of a multitude of consumers |
| 08/17/1988 | CN87213546U Single-phase load limiting switch |
| 08/17/1988 | CN87211404U Protecting switch for overvoltage and electricity leakage |
| 08/16/1988 | US4764839 Low voltage reset circuit |
| 08/16/1988 | US4763365 Spa system having high temperature safety device |
| 08/16/1988 | CA1240778A1 Safety mechanism for electrical power line |
| 08/11/1988 | WO1988005973A1 Add-on ground fault module |
| 08/10/1988 | CN87216877U Energy-saving protector for refrigerator |
| 08/10/1988 | CN87216309U Delayed voltage-limiting protector for domestic electrical equipment |
| 08/10/1988 | CN87216123U Analog-rectifier relay protection unit |
| 08/10/1988 | CN87214207U Domestic acoustooptic alarm distribution box with automatic power-limiting protective apparatus |
| 08/10/1988 | CN87210399U All-functional protector |
| 08/10/1988 | CN87210090U Current limiter |
| 08/09/1988 | US4763222 Vehicle suspension control with actuating circuit protection |
| 08/03/1988 | EP0276296A1 Current-limiting circuit. |
| 08/03/1988 | CN87209581U Leakage current operating protector |
| 08/03/1988 | CN87203667U Power source automatic controlling protector for refrigerator |
| 08/03/1988 | CN87107988A Improved current fault detection method |
| 08/03/1988 | CN86108614A Multifunctional automatic contactor with distinct state indication |
| 08/02/1988 | US4761706 Method for generating a tripping signal as a function of the magnitude and the duration of an overcurrent |
| 08/02/1988 | US4761705 Fault tolerant/failsafe current unit |
| 08/02/1988 | US4761704 Solid-state trip device with test circuit for an electrical circuit breaker |
| 08/02/1988 | US4761703 Rotor fault detector for induction motors |
| 08/02/1988 | CA1240025A1 Control circuit for a circuit interrupter |
| 07/28/1988 | WO1988005543A1 High impedance fault analyzer in electric power distribution |
| 07/28/1988 | DE3743453A1 Circuit arrangement for short-circuit protection of a semiconductor amplifier element |
| 07/27/1988 | EP0276181A1 Method and device for checking faulty conductors of an electrical line |
| 07/27/1988 | EP0275779A1 Directional relay protective device consisting of several types |
| 07/27/1988 | EP0275633A1 Control of multiphase ac motors |
| 07/27/1988 | EP0275352A1 Circuit for the protection of electronic appliances against overloading |
| 07/27/1988 | CN87211108U Anti-mine device with extrahigh voltage synchronism breaking function |
| 07/27/1988 | CN86108602A Multifunctional explosionproof-type circuit protector |
| 07/26/1988 | US4760487 Differential relay for protecting an electrical power transmission system |
| 07/26/1988 | CA1239664A1 Measuring circuit and method for power distribution equipment |
| 07/20/1988 | EP0274949A1 Process for controlling and protecting against electrical arcs in a high-voltage generating device, and device for carrying out this process |
| 07/20/1988 | EP0274639A1 Protective interrupting system |
| 07/20/1988 | CN87212463U Multifunctional automatic protector for electric appliances |
| 07/20/1988 | CN87212289U Multifunctional power-saving controller for electrical machinery |
| 07/20/1988 | CN87100154A Protector for null line breaking |
| 07/19/1988 | US4758919 Sectionalizer for spur lines |
| 07/14/1988 | WO1988005220A1 Apparatus for switching a domestic electric network on and off |
| 07/13/1988 | CN87214518U Protectire device for failed phase, disconnected phase, over-voltage and under-voltage of low tension networks |
| 07/13/1988 | CN87210254U Protector for electricity supply interruption |
| 07/13/1988 | CN87206426U Safety automatic restorer for electricity supply circuit breaker and leak protector |
| 07/13/1988 | CN87204709U Multi-functional electronic leak protection device |
| 07/13/1988 | CN87204653U Multi-function and automatic control protection device for electrical equipments |
| 07/12/1988 | US4757416 Protective apparatus, methods of operating same and phase window adjusting apparatus for use therein |
| 07/12/1988 | US4757242 Microprocessor based motor protective relay with half wave sampling |
| 07/06/1988 | EP0273255A1 Protective differential-current circuit breaker |
| 07/06/1988 | CN87206860U Indicator for leakage of electricity |
| 07/06/1988 | CN87206393U Multifunction safety device of refrigerator |
| 07/06/1988 | CN87204504U Multifunction full automatically safety device of refrigerator |
| 07/06/1988 | CN86206954U Digital cycle relay |
| 07/06/1988 | CN86108251A Multifunction explosion-proof automatic contactor |
| 07/06/1988 | CN85101062A Fast spark detector |
| 07/05/1988 | US4755903 Distance measuring relay for line faults |
| 06/29/1988 | CN87204357U Four-function integrated circuit automatic protector for refrigerator |
| 06/29/1988 | CN87107404A Circuit arrangement for protecting electronic device to counteract excessive load |
| 06/29/1988 | CN85104421B Singal generator for indicating fault in an a.c.network |
| 06/23/1988 | DE3642393A1 Residual current device |
| 06/23/1988 | DE3642136A1 Electronic tripping device for switches (circuit breakers) which limit the short-circuit current |
| 06/22/1988 | EP0272005A2 An automatic door being controlled with a servo controlled safety protection device |
| 06/22/1988 | CN87209522U Detector for electrical leakage protector |
| 06/21/1988 | US4752865 Power source device for circuit breaker |
| 06/21/1988 | US4752853 Circuit interrupter apparatus with an integral trip curve display |
| 06/21/1988 | US4752852 Controlling current flow from a voltage supply through a load |
| 06/15/1988 | EP0270622A1 Electronic control system, in particular for a printer. |
| 06/15/1988 | CN87210607U Sefety device for household electric appliance |
| 06/14/1988 | US4751653 Fault detector for a three-phase alternating current supply |
| 06/14/1988 | US4751606 Circuit interrupter apparatus with a battery backup and reset circuit |
| 06/14/1988 | US4751605 Reader for a digital trip device associated with a current breaking device |
| 06/14/1988 | CA1238107A1 Digital impedance relay |
| 06/08/1988 | EP0269797A1 Electronic motor protection relay |
| 06/08/1988 | CN86206110U Low power-consuming time delayed-actioning ic ac voltage controller |
| 06/08/1988 | CN86203922U Protector for high voltage directional current-leakage |
| 06/07/1988 | CA1237774A1 Protective relay circuit for detecting arcing faults on low-voltage spot networks |
| 06/02/1988 | WO1988004055A1 Method and device for detecting insulation resistance |