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)
12/1993
12/14/1993	US5270896 Personnel protection system for electrical power connections
12/09/1993	WO1993024981A1 Method and device for preventing understabilization of longitudinal differential protection in case of external fault and current transformer saturation
12/09/1993	WO1993024792A1 Electronic gas valve power interruption switch
12/09/1993	CA2136346A1 Electronic gas valve power interruption switch
12/08/1993	EP0573333A1 Method for the selective protection of the mains against earth faults
12/08/1993	EP0572794A2 Safety cut-off system
12/08/1993	EP0572606A1 Remotely programmable electronic trip system
12/08/1993	CN2149044Y Protective switch for overload, short circuit, overvoltage and leakage
12/08/1993	CN2149043Y Three-phase supervisor electricity-using
12/08/1993	CN2149042Y Triphase source negative-phase sequence automatic regulator
12/08/1993	CN2149041Y Leakage, undervoltage electronic breaker
12/08/1993	CN2149040Y Precision accuracy overvoltage and undervoltage double safety protector
12/08/1993	CN2148628Y No-load self-turning off electricity-saving switch for ac/dc arc welding machine
12/08/1993	CN1023048C Phase cut-off protector of phase and width discrimination
12/07/1993	US5268595 Voltage detector for producing output signal without transient error level
12/01/1993	EP0571898A1 Low voltage power control breaker system
12/01/1993	EP0571657A2 Inverter apparatus and inverter controlling method having fault protection
12/01/1993	CN2148456Y Lamp failure protector for electronic ballast of single or multiple lamps
12/01/1993	CN2148424Y Compound type overvoltage protecting device
12/01/1993	CN2148418Y Phase-sensitive integral protector
12/01/1993	CN2148417Y Full-automatic integral protector for household electric appliances
12/01/1993	CN2148416Y 多功能自动开关 Multifunctional Automatic Switch
12/01/1993	CN2148415Y Multifunctional electrical protector
12/01/1993	CN2148414Y Single-phase multifunction safety energy-saving controller
12/01/1993	CN2148413Y Multifunctional protector
12/01/1993	CN2148412Y Power-saving switch capable of prolonging lamp service life and self-interrupting during cut-off of power
12/01/1993	CN2148411Y 电磁型漏电保护器 Electromagnetic leakage protection
11/1993
11/30/1993	US5267117 Electrical phase and amplitude fault detection and response system
11/30/1993	US5267116 Electrical safety socket
11/25/1993	DE4215899C1 Difference current detection system - uses annular core with two opposing gaps each with magnetic field sensor enclosing symmetrical current leads
11/24/1993	EP0571109A2 Overvoltage protection scheme for subscriber loops and method of performing same
11/24/1993	EP0570603A1 Fail safe differential current circuit-breaker
11/24/1993	CN2147680Y Miniature generator with regulated power supply
11/24/1993	CN2147666Y Multi-function electric power facilities theft-proof alarm device
11/24/1993	CN2147665Y Protector for colour TV and refrigerator
11/24/1993	CN2147664Y Three-phase overload protector
11/24/1993	CN1078829A Differential protecting technology for impedance matching banlance transformer
11/18/1993	EP0570310A1 Signal generator for the remote detection of functional failure of overvoltage protection devices mounted on electrical distribution lines
11/18/1993	EP0570304A1 Electronic circuit breaker with correcting device
11/18/1993	EP0311649B1 Add-on ground fault module
11/17/1993	CN2146812Y Automatic controller for silicon current transformer
11/17/1993	CN2146802Y Multi-functional fuse box
11/17/1993	CN2146801Y Electric equipment protector
11/17/1993	CN2146800Y Circuit protector for irrigation in the countryside
11/17/1993	CN2146789Y 多功能保安插座 Multifunction Security Socket
11/17/1993	CN1078576A Protective circuit for electric appliance
11/16/1993	US5262680 Switch control apparatus for eliminating intermittent on/off condition on a power supply switch
11/16/1993	US5262676 Switching system developed as module having at least one semiconductor switch for switching a load
11/16/1993	CA2036887C Compressor motor protection system
11/13/1993	CA2095994A1 Electronic trip device comprising a correcting device
11/11/1993	DE4215184A1 Detecting differential currents for fault current circuit breaker - using magnetic flux induced state change in medium not contg. secondary winding
11/10/1993	CN2146100Y Overvoltage protecting device for electronic ballast
11/10/1993	CN2146075Y Polarity and undervoltage protector
11/10/1993	CN2146072Y Power failure self-lock switch
11/10/1993	CN2146071Y Neutral potential shifting integrated protection circuit breaker
11/10/1993	CN2146061Y Multifunctional safety socket
11/09/1993	US5260676 Dual wound trip solenoid
11/09/1993	CA1324207C Apparatus for detecting unsymmetrical bipolar waveforms
11/03/1993	EP0568471A1 Device for monitoring a homopolar fault in a mains supply
11/03/1993	CN2145469Y Delay electromagnet leakage switch
11/03/1993	CN2145468Y Electricity leakage circuit breaker with overvoltage protection
11/03/1993	CN2145467Y a.c. loss of phase protecting contactor
11/03/1993	CN2145466Y Device for fuse wire emergency break because of a.c. power overpressure
11/03/1993	CN2145465Y Delay overcurrent protecting socket device for refrigerator
11/02/1993	US5258885 Digital protective relay apparatus
11/02/1993	US5258758 Digital-to-analog converter
11/02/1993	CA1323897C Molded case circuit breaker actuator-accessory unit
10/1993
10/27/1993	EP0566594A1 Overcurrent protection device.
10/27/1993	CN1077822A Overvoltage protector for input circuit of electronic apparatus
10/26/1993	US5257156 Turn-on transient overcurrent response suppressor
10/26/1993	CA1323682C Negative and zero sequence directional overcurrent unit for ac power transmission line protection
10/20/1993	CN2144360Y Protector for power cut and thunderbolt
10/19/1993	US5255148 Power distribution system
10/14/1993	DE4310323A1 Overcurrent protection appts. for power device, esp. IGBT - interrupts current supply when current magnitude is detected for time period which is not shorter than permitted period
10/13/1993	EP0565179A2 A semiconductor device including protection means
10/13/1993	CN2143839Y Composite over voltage sefeguard
10/13/1993	CN2143838Y Multifunction safety switch for electric heating mattress
10/13/1993	CN2143782Y Single phase electric meter with shock-proof and leakage-proof protective function
10/13/1993	CN1077315A Automatic switch of transformer
10/13/1993	CN1022447C Multi-functional monitoring and controlling protector for three-phase motor
10/06/1993	EP0564334A1 Device for detecting and indicating a fault current in an arrester or insulator
10/06/1993	EP0563606A2 Current transformer for earth-leakage circuit breakers which are sensitive to current pulses
10/06/1993	CN2143380Y Overcurrent relay protector
10/06/1993	CN2143379Y Circuit closing device having IC circuits
10/05/1993	US5251157 Process for offset adjustment of a microprocessor based overcurrent protective device and apparatus
09/1993
09/30/1993	WO1993019507A1 Phase selection for ground fault
09/30/1993	DE4309167A1 Schaltungssubstratvorrichtung Circuit substrate device
09/29/1993	EP0561900A1 Circuit protection device
09/29/1993	CN2143017Y Low-voltage electrical leakage monitor for mine use
09/29/1993	CN2143016Y Multi-function fuse box
09/29/1993	CN1076811A Apparatus for cutting of circuit
09/22/1993	EP0561210A2 Overcurrent detector circuit for a circuit-breaker
09/22/1993	EP0560973A1 Communication interface for bus connected circuit breakers
09/22/1993	CN2142613Y Low voltage safety cut-out device
09/22/1993	CN2142612Y Relay type self cut-off energy-saving switch
09/22/1993	CN1076559A Over-voltage protective method and apparatus for AC power supply
09/22/1993	CN1076558A Automatic protector for electrical equipment of car
09/21/1993	US5247419 Low voltage switchgear
09/15/1993	CN2142238Y Cadmium-nickel accumulator power supply with closing circuit without maintenance
09/15/1993	CN2142233Y Protector for three-phase 380V electric equipment

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