H02H 7 - Emergency protective circuit arrangements specially adapted for specific types of electric machines or apparatus or for sectionalised protection of cable or line systems, and effecting automatic switching in the event of an undesired change from normal working conditions

Patents for H02H 7 - Emergency protective circuit arrangements specially adapted for specific types of electric machines or apparatus or for sectionalised protection of cable or line systems, and effecting automatic switching in the event of an undesired change from normal working conditions (32,726)
01/1995
01/05/1995	CA2165183A1 Hybrid alternator with voltage regulator
01/04/1995	EP0632559A1 Negative-sequence time-overcurrent relay
01/04/1995	CN1027333C Device for protecting power supply circuit
01/03/1995	US5379178 Method and device for triggering an electromagnetic consumer
01/03/1995	US5379020 High-temperature superconductor and its use
12/1994
12/28/1994	EP0631361A1 Overload protection with priority circuit for electric motors, especially for adjustable car seats
12/28/1994	CN2186462Y Loss of phase protection device
12/27/1994	US5377067 Junction box with protection function to protect from overvoltage and overcurrent
12/22/1994	WO1994029558A1 Garage-door drive with safety cutoff
12/22/1994	WO1994029557A1 Garage-door drive unit with safety monitoring system
12/22/1994	DE4322379C1 Circuit arrangement for protection of the semiconductor switches while switching a mains converter bridge, which feeds energy back into an electrical mains system, in a DC intermediate-circuit converter
12/21/1994	EP0616737A4 Battery with protection circuit.
12/21/1994	CN2185941Y Under voltage open--phase protector for A.C. motor
12/20/1994	US5375032 Trip control device for circuit breaker
12/20/1994	US5375029 Overcurrent protection circuit of power device and semiconductor integrated circuit device
12/20/1994	US5375028 Overcurrent protective device and device for detecting overcurrent
12/14/1994	EP0629031A2 Reverse battery protection circuit
12/14/1994	CN2185472Y Circuit-breaking relay
12/13/1994	US5373434 Pulse width modulated power supply
12/13/1994	US5373205 Method and apparatus for limiting motor current
12/08/1994	WO1994028608A1 Control of electric loads during generator failure in a multi-generator system
12/08/1994	CA2161528A1 Control of electric loads during generator failure in a multi-generator system
12/07/1994	EP0627676A1 Method for supervising and controlling electronically the process of opening and closing electrically driven aggregats
12/07/1994	CN2185001Y Motor protector
12/07/1994	CN1096104A Output coupling to high frequency breakdown signals from middle high frequency electric magnetic field of large motor
12/06/1994	US5371645 Inverter air conditioner
12/06/1994	CA2008685C Method and apparatus for detecting mechanical overload of a hoist
12/06/1994	CA1333408C Electronic ballast circuit for fluorescent lamps
12/01/1994	DE4418124A1 Device for recognising insulation deterioration on power-supply cables
11/1994
11/30/1994	EP0626745A2 Floating drive technique for reverse battery protection
11/30/1994	EP0626743A2 Line fault monitoring apparatus
11/30/1994	CN1095868A 潜水电机保护器 Submersible motor protection
11/30/1994	CN1095867A Overheat protector of 3-phase electric motor
11/29/1994	US5369540 Electric vehicle drive train with contactor protection
11/29/1994	US5369349 Electric motor control system
11/29/1994	US5369344 Tachometer for determining the speed of a motor
11/29/1994	CA1333290C Series capacitor equipment
11/24/1994	WO1994027349A1 Electric motor drive
11/23/1994	EP0625815A2 Vehicle door control
11/23/1994	EP0600072A4 Trip energy monitor.
11/23/1994	CN2183633Y Built-in motor protector
11/23/1994	CN2183628Y Digital-display phase-loose protecting relay
11/23/1994	CN2183627Y Single-wire control electromagnetic motor protector
11/23/1994	CN1095547A 电源 Power supply
11/22/1994	US5367426 Distance relay with load encroachment protection, for use with power transmission lines
11/22/1994	US5367240 Low cost current sensor for fast-switching inverter applications
11/22/1994	US5367236 DC motor stall-detection system
11/17/1994	EP0624541A2 Door control unit
11/17/1994	DE4416803A1 Method and device for adjusting parts operated by external force, especially in a motor vehicle bodywork
11/17/1994	DE4315637A1 Method for detecting the position, the direction (sense) of rotation and/or the speed of rotation of a rotatably mounted part
11/16/1994	CN2183038Y Motor protective arrangement
11/16/1994	CN2183028Y Device for controlling high voltage electric motor
11/15/1994	US5365397 Device for protecting power semiconductor device against short circuit
11/15/1994	US5365396 Negative sequence directional element for a relay useful in protecting power transmission lines
11/15/1994	US5365394 Electronic relay to protect motors and thyristors against symmetric overload, phase unbalance and short-circuit
11/09/1994	EP0600042A4 Overtemperature sensing and signaling circuit.
11/09/1994	CN2182483Y Portector for electric machine
11/09/1994	CN2182458Y Phase failure switch
11/09/1994	CN1094863A Protective method for three-phase electrical equipment and automatic electrical appliance protector thereof
11/08/1994	US5362206 Pump control responsive to voltage-current phase angle
11/01/1994	US5361055 Persistent protective switch for superconductive magnets
11/01/1994	CA1332845C Motor controller for pumping units
10/1994
10/27/1994	WO1994024750A1 Method of monitoring a temperature rise of a squirrel cage induction motor
10/27/1994	DE4312987A1 Method and circuit for monitoring asynchronous motors which are operated from a single-phase alternating-current mains system
10/27/1994	DE4310233A1 Protection circuit for inductive loads
10/26/1994	EP0621678A1 Overvoltage protection circuit
10/26/1994	EP0621674A1 Effector with self-compensating contacts for the supply of a load circuit
10/26/1994	EP0621146A2 Electric car air-conditioning apparatus
10/26/1994	CN2181128Y Coupling controller for computer and motor
10/26/1994	CN2181113Y Electronic thermal-relay
10/26/1994	CN1094197A 单相感应电动机的安全控制器 Single-phase induction motor safety controller
10/25/1994	CA2014314C Room air cleaner for a vehicle
10/13/1994	DE4410506A1 Control system for opening or closing an opening/closing element
10/13/1994	DE4311219A1 Method and circuit arrangement for protection against uncontrolled acceleration of an electronically regulated drive motor for fully automatic washing machines
10/12/1994	EP0619637A1 Protection of an automobile three-phase alternator
10/12/1994	CN2179663Y Soft starter of magnetic-controlled asynchronous motor
10/12/1994	CN2179653Y Electric motor combined protector
10/12/1994	CN2179652Y Electric motor automatic compensating protector
10/11/1994	US5355298 Conversion apparatus including latch and non-latch type functions
10/05/1994	EP0618669A1 Squirrel-cage asynchronous motor
10/05/1994	EP0617856A1 Flashover between power lines suspended in parallel.
10/05/1994	EP0543826B1 Process and device for driving an electromagnetic consumer
10/05/1994	CN2178960Y Automatic protecting electronic switch for quantum current of air-condition equipment
10/05/1994	CN2178959Y Three-wire controlled electromagnetic type electrical machinery safety device
10/05/1994	CN1093204A Comprehensive motor protector
10/04/1994	US5352983 Method and apparatus for detecting flashover between conductors in power transmission lines of different voltage levels suspended in parallel from the same towers
10/04/1994	US5352932 Trigger circuit for a power FET with a load on the source side
10/04/1994	US5351439 Power window apparatus having improved safety device
10/04/1994	CA2012578C Semiconductor electric power conversion system
09/1994
09/29/1994	WO1994022207A1 A method for limiting the output current of a switched-mode power supply of flyback type in overload situations, and a switched-mode power supply of flyback type
09/28/1994	EP0617498A1 Safety system for protecting cables and devices from fire producing faults through the use of a guard lead causing the tripping of highly sensitive differential circuit breakers
09/28/1994	EP0617497A1 Overheating detection circuit for use with a power integrated circuit
09/28/1994	EP0616737A1 Battery with protection circuit
09/28/1994	CN2178399Y Electronic general starter
09/22/1994	DE4318502C1 Method and circuit for monitoring the currents from power capacitors for power-factor correction
09/21/1994	EP0616416A1 Conversion apparatus
09/21/1994	EP0449822B1 Electronic control and protection device
09/21/1994	CN2178015Y Protector for phase lacking and leakage of motor
09/21/1994	CN2178014Y Integral monitor for AC motor
09/20/1994	US5349490 Negative sequence directional element for a relay useful in protecting power transmission lines

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