| 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) |
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| 09/20/1994 | US5349276 Control system for regulating motor speed |
| 09/20/1994 | CA2002069C Cell bypass circuit |
| 09/15/1994 | WO1994021014A1 Arc detection in neon lighting systems |
| 09/15/1994 | WO1994020890A1 Automatic venting system for a vehicle |
| 09/14/1994 | EP0615328A1 Voltage-type self-commutated conversion system |
| 09/14/1994 | EP0615266A1 Electric protection device with thermal detector |
| 09/14/1994 | EP0545926B1 Current relay circuit |
| 09/14/1994 | CN2177297Y Multifunction three phase motor power supply protective box |
| 09/14/1994 | CN2177296Y Motor protector |
| 09/13/1994 | US5347417 Power supply protection system applied to optical subscriber network |
| 09/13/1994 | US5347214 Method and device for setting the short circuit moment in electric motors, particularly in servomotors |
| 09/13/1994 | US5347104 Heater control circuit |
| 09/08/1994 | DE4403375A1 Device and method for controlling an inductive load |
| 09/07/1994 | EP0614298A2 Bussystem protected against the uncoupling of earth connections |
| 09/06/1994 | US5345158 Electrical distribution equipment with torque estimating capability |
| 08/31/1994 | CN2175983Y Protecting starter of single-wire motor |
| 08/31/1994 | CN1091514A Apparatus for controlling of refrigerant circulation |
| 08/30/1994 | US5343155 Fault detection and location system for power transmission and distribution lines |
| 08/30/1994 | US5343137 Apparatus to prevent complete battery discharge |
| 08/25/1994 | DE4304690C1 Electronic starting safety circuit for the motor drive of an electrical appliance |
| 08/24/1994 | CN2175485Y Electric motor protection arrangement adjusted on side |
| 08/24/1994 | CN2175484Y Arrangement for alarming and protection of low voltage or phase-interruption for three-phase electric motor |
| 08/24/1994 | CN2175483Y Arrangement for protection against phase interruption for electric motor |
| 08/24/1994 | CN2175482Y Protection and alarming arrangement for phase-interruption for three-phase electric motor |
| 08/24/1994 | CN2175481Y Transformer with loss-free function |
| 08/23/1994 | US5341268 Method of and system for disconnecting faulty distribution line section from power distribution line |
| 08/23/1994 | US5341077 Method and device for limiting electrical current supplied to the motor of an electric vehicle |
| 08/18/1994 | WO1994018737A1 Electric vehicle drive train with contactor protection |
| 08/18/1994 | CA2115867A1 Apparatus including system control of motor temperature |
| 08/17/1994 | CN2174801Y Automatic protecting apparatus |
| 08/10/1994 | EP0609662A1 Method for determining the thermal rigidity of safety switches by consideration of the harmonic waves of the phase currents and device for realization of this method |
| 08/10/1994 | CN2174005Y Multifunctional automatic protection switch for three-phase motor |
| 08/09/1994 | US5337206 Three phase power monitor |
| 08/04/1994 | WO1994017540A1 Thermal protection for electrical machines |
| 08/04/1994 | DE4403008A1 Inverter with overvoltage protection |
| 08/03/1994 | EP0608830A1 Motor control device |
| 08/03/1994 | EP0478564B1 Safety device for vehicle passengers |
| 08/03/1994 | CN2173472Y Multi-function comprehensive protector for motor |
| 08/02/1994 | US5334876 Power window or panel controller |
| 08/02/1994 | US5334553 Telecommunication equipment protector |
| 07/27/1994 | EP0608150A1 Overload protection of switch mode converters |
| 07/27/1994 | CN2172925Y Phase-lack protector for three-phase motors |
| 07/27/1994 | CN2172924Y Protective switch for motors |
| 07/27/1994 | CN1090096A Safety device for electrical operation |
| 07/26/1994 | US5333087 Superconducting magnet apparatus with a magnetic shield |
| 07/20/1994 | CN2172541Y Fast protecting switch for phase-loss and overload of electric motor |
| 07/20/1994 | CN2172540Y Whole-function protecting energy saving switch for electrical machine and loom |
| 07/13/1994 | EP0605438A1 Battery-operated device. |
| 07/13/1994 | CN2171948Y Multifunction energy-saving controllor for a.c. electrical machinery |
| 07/13/1994 | CN2171942Y Loss of phase overload protector for multi-capacity electrical machinery |
| 07/12/1994 | US5329414 Protective relay interface |
| 07/12/1994 | CA2038424C Control system for excitation of synchronous machine |
| 07/07/1994 | DE4244530A1 Protected power supply circuit for TV receiver in standby mode |
| 07/05/1994 | US5327318 Telecommunication equipment protector |
| 07/05/1994 | US5327172 Polling for detection of power supply or other failures of a digital circuit |
| 06/29/1994 | EP0604394A1 Control circuit for a DC motor |
| 06/29/1994 | EP0604289A1 Method and device for supplying power to electric motor, particularly for driving a windscreen wiper of a motor vehicle |
| 06/29/1994 | EP0604037A1 Busbar protection method |
| 06/29/1994 | EP0560973A4 Communication interface for bus connected circuit breakers |
| 06/29/1994 | CN2170601Y Multifunctional computerized electricity-saving starter |
| 06/28/1994 | US5324989 Power controller module providing user selectable overload protection |
| 06/28/1994 | US5324170 Pump control apparatus and method |
| 06/23/1994 | WO1994014229A1 Automatic load current back regulation |
| 06/23/1994 | WO1994014178A1 Disk drive power management system |
| 06/23/1994 | DE4310513C1 Overload protection circuit for network supply stage |
| 06/22/1994 | EP0602708A2 Control electrode disable circuit for power transistor |
| 06/22/1994 | EP0602699A2 Current limited power semiconductor device |
| 06/22/1994 | CN2169942Y Short circuit protector for mine lamp accumulator |
| 06/22/1994 | CN2169941Y AC motor controller |
| 06/21/1994 | US5323287 Protective device for electric motors |
| 06/15/1994 | EP0601809A1 Telecommunication equipment protector |
| 06/15/1994 | EP0601660A2 Electronic relay to protect motors and thyristors against symmetric overload, phase unbalance and shortcircuit |
| 06/15/1994 | CN2169239Y Phase off protector for three phase motor |
| 06/15/1994 | CN2169238Y Protector for three phase asynchronous motor |
| 06/15/1994 | CN2169237Y Automatic protector for three phase asynchronous motor |
| 06/14/1994 | US5321392 Infusion pump with battery back-up |
| 06/08/1994 | EP0600810A1 Ovenvoltage protection device |
| 06/08/1994 | EP0600751A2 Solid state power controller |
| 06/08/1994 | EP0600076A1 Logic level current and voltage independent restraint system |
| 06/08/1994 | EP0600072A1 Trip energy monitor |
| 06/08/1994 | EP0600042A1 Overtemperature sensing and signaling circuit. |
| 06/08/1994 | CN2168357Y Phase-loose alarming protector for motor |
| 06/08/1994 | CN2168356Y Protector for three-phase motor |
| 06/08/1994 | CN2168355Y Phase-loss over-load and short-circuit protector for three-phase asynchronous motor |
| 06/05/1994 | CA2110632A1 Overvoltage protection circuit |
| 06/01/1994 | EP0599814A2 Power supply system |
| 06/01/1994 | EP0599629A2 Charge/discharge control circuit |
| 06/01/1994 | CN2167468Y Protective device for electric appliance |
| 06/01/1994 | CN2167467Y Single-phase electric motor protector |
| 06/01/1994 | CN2167466Y Multi-function electric motor protector |
| 06/01/1994 | CN1087452A Open-phase protector for three phase motor |
| 05/31/1994 | US5317244 Motor control unit provided with anti-burning device |
| 05/31/1994 | CA2036699C Multilevel phase unbalance compressor motor protection system |
| 05/31/1994 | CA2007833C Method and system of transformer protection and method and system of detecting a defective winding |
| 05/25/1994 | EP0598292A2 Thyristor valve arrester and DC power transmission thyristor valve using the same |
| 05/25/1994 | CN2166552Y Automatic protector against phase interruption and over-voltage for three-phase electric machine |
| 05/25/1994 | CN2166551Y Group control protecting apparatus for electric machine |
| 05/24/1994 | US5315221 Motor control with contact weld sensor and interrupter |
| 05/24/1994 | CA1329827C Motor controller |
| 05/19/1994 | DE4238471A1 Overcurrent and overvoltage protection circuit for LV halogen lamps - + has transformer coupled pulsed supply from rectified AC or DC source with current and voltage sensed pulse output control |