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

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)
12/1988
12/21/1988	CN88201228U Electrothermal bedclothes with circuit breaking protector
12/20/1988	CA1247225A1 Protective relaying apparatus for providing fault- resistance correction
12/15/1988	DE3718183A1 Residual current device (differential-current protection circuit breaker)
12/13/1988	US4791520 Fault protection for a medium voltage transformer branch
12/13/1988	US4791517 Detection of unsafe voltages on mobile equipment
12/13/1988	CA1246697A1 Dc power control system for electric vehicle
12/07/1988	EP0293376A1 Protective circuit for electric apparatus
12/07/1988	CN87215683U Safe device of ground wire
12/07/1988	CN87212552U Power supply plug with electricity leakage protecting
12/06/1988	US4788977 High-frequency surgical instrument
12/06/1988	CA1246188A1 Ground fault voltage limiting for a locomotive electric traction motor
12/06/1988	CA1246146A1 Dual current transformer current sensing method and sensor
11/1988
11/30/1988	CN88103459A Electronic protecting instrument for ac load
11/30/1988	CN87209384U Multipurpose protector
11/30/1988	CN87107828A Analog rectification type relay protective device
11/29/1988	US4788620 Static trip circuit breaker with automatic circuit trimming
11/29/1988	US4788618 High voltage protecting circuit
11/29/1988	CA1245712A1 Station protector assembly
11/23/1988	CN88202437U Protector for over-voltage and over-current
11/22/1988	CA1245336A1 Reclosing relay apparatus
11/22/1988	CA1245289A1 Rms calculation circuit for digital circuit interrupters
11/17/1988	EP0291169A1 Protection arrangement for a telephone subscriber line interface circuit
11/17/1988	EP0291156A1 Earth fault check system
11/17/1988	DE3812733A1 Short-circuit protection circuit
11/16/1988	CN88204274U Emergency protective device for loss of phase and short circuit
11/16/1988	CN87216275U Leakage protection circuit breaker
11/16/1988	CN87210996U High-voltage and electric-shock prevention household safety device
11/15/1988	US4785249 Method for measuring distance in digital distance relays
11/15/1988	CA1244929A1 Circuit breaker with digitized solid-state trip unit with inverse time tripping function
11/09/1988	CN88212287U Automatic switch for leakge without dead area
11/09/1988	CN88211180U Protective device for full automatic refrigerator and air conditioner
11/09/1988	CN86203287U Comprehensive protector for safety use of family electric appliances
11/08/1988	US4783714 For providing output power
11/08/1988	US4783713 Full automatic electric shock protector apparatus
11/02/1988	EP0289268A2 Power status monitor for electronic system
11/02/1988	EP0289042A2 Circuit breaker
11/02/1988	EP0289011A2 Current sensing device
11/02/1988	CN88203604U Appended device of electricity-leakage protecting switch
11/02/1988	CN88203524U Automatic current-limiter
11/02/1988	CN87216046U Misconnection protector for three-wire power socket and plug
11/02/1988	CN87213886U Safety protector for using electricity
11/02/1988	CN87213656U Automatic monitor unit of lighting circuit
11/02/1988	CN87212818U Overvoltage leakage protector
11/02/1988	CN87211996U Neutral-breaking automatic protection switch
11/01/1988	US4782422 I2 t monitoring circuit
11/01/1988	CA1244072A1 Electrical switch means particularly adapted to gfci test and reset switches
10/1988
10/26/1988	CN87215351U Electricity leakage protector with a piezoresistor type overvoltage protective device
10/26/1988	CN87214810U Monitor and protection circuit with a comtinuously-adjusted overranged current
10/26/1988	CN87210963U Time-controlled amplitude-discriminating electric shock protector
10/26/1988	CN87210350U Phase sequence and phasefailure protective relay
10/26/1988	CN87200618U Molel dy multifunctional fully-automatic electric protector
10/25/1988	US4780908 Method and apparatus for signal transmission regulation in differential protection
10/25/1988	US4780789 Method for generating circuit-breaking signals
10/25/1988	US4780788 Two-wire switch with a power transistor
10/25/1988	US4780787 Self-monitoring digital solid-state trip release
10/25/1988	US4780786 Solid-state trip unit of an electrical circuit breaker with contact wear indicator
10/19/1988	EP0287304A2 Fault tolerant/failsafe current unit
10/19/1988	EP0286951A1 Monitoring circuit for polyphase convertor
10/19/1988	CN88212791U 多功能太阳能荧光灯 Multifunctional Solar Fluorescent
10/19/1988	CN88212007U Multifunctional correcting and testing table for current leakage protector
10/19/1988	CN88201247U Current leakage protector with overcurrent and short-circuit protecting function
10/19/1988	CN88100138A Safety device for alternating current elevator
10/19/1988	CN87215421U High sensitive allowance power supply unit
10/19/1988	CN87214865U Automatic circuit protector against current stealing and leakage
10/12/1988	CN87216244U Fully-automatic domestic protector
10/12/1988	CN87212147U Open-phase and short circuit protector
10/12/1988	CN87207689U 漏电保护器 Leakage protection
10/12/1988	CN87201683U Synthetical protective switch for household electrical appliances
10/06/1988	DE3709771A1 Circuit arrangement for voltage monitoring
10/05/1988	EP0285594A1 Fault current interruptor with short time delay
10/05/1988	EP0285583A1 Device for protecting an integrated circuit against overload and short circuit currents
10/05/1988	EP0285532A1 Fault detector device in a three-phase network supplying leads by full wave trains
10/05/1988	CN88202115U Fully automatic multifunction solid electricity-applying protecting device
10/05/1988	CN88202056U Automatic switch type a.c./d.c power source transducer
10/05/1988	CN87211970U Limit power supply automatic control warner
10/05/1988	CN87206782U Low voltage electrical equipment breaker when leakage
10/04/1988	CA1242791A1 Circuit breaker static trip unit having automatic circuit trimming
09/1988
09/28/1988	EP0284546A1 Method of testing assemblies
09/28/1988	EP0284198A2 Circuit interrupter apparatus with an integral trip curve display
09/28/1988	EP0283895A1 Electrical protection apparatus
09/28/1988	CN87209194U Multi-functional protector for circuit
09/28/1988	CN87201863U Multi-functional safety unit
09/27/1988	US4774621 For sampling an AC voltage and/or current in an electric power system
09/22/1988	WO1988007283A1 Overcurrent protection device for power generating plants for residential and industrial buildings and similar buildings
09/22/1988	DE3708005A1 Ueberstromschutzvorrichtung fuer stromversorgungsanlagen von wohn- und betriebsgebaeuden und dergleichen gebaeuden Buildings over current protection device for power supply systems of civil and betriebsgebaeuden and the like
09/22/1988	DE3707973A1 Power supply device having an overvoltage protection circuit
09/22/1988	DE3707930A1 Output stage drive having a switched-mode regulator
09/21/1988	EP0283358A1 Static trip unit comprising a circuit for detecting the residual current
09/21/1988	CN88101164A Solid-state trip apparatus containing circuit measuring zero phase sequence current
09/21/1988	CN87214206U Electric-control box for multichannel acoustooptic alarm
09/21/1988	CN87213122U Miniaturized crystal recloser device
09/21/1988	CN87210736U Ac contactor for phase-breaking protection
09/21/1988	CN87101806A 电功率限制器 Electric power limiter
09/21/1988	CN87101804A Protector for household electrical appliances
09/20/1988	US4772980 For a computer or other high-density electronic assembly
09/20/1988	US4772979 Voltage shock protection circuit
09/20/1988	US4772978 Transformer protection system
09/20/1988	US4772977 System for protection of electrical machines against damage from residual voltage effects
09/15/1988	DE3707307A1 Electrical tripping device
09/15/1988	DE3706932A1 Device for protecting against shorts to earth for rectifier-fed synchronous machine exciter device in a potential free arrangement

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