| 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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| 03/25/1997 | US5615102 Inverter apparatus and method of operation therefor |
| 03/25/1997 | US5615097 Transient over voltage protection circuit for electrical power converters |
| 03/25/1997 | US5614798 Circuit configuration for identifying a short circuit or shunt event in a servomotor system |
| 03/20/1997 | WO1997010634A1 Circuit configuration to detect excess temperature due to current flow |
| 03/20/1997 | DE19534056A1 Schaltungsanordnung zur Erkennung einer Übertemperatur aufgrund eines fließenden Stromes Circuitry for detecting an excess temperature due to a current flowing |
| 03/20/1997 | DE19534018A1 Control device for motor vehicle electric window drive motor |
| 03/19/1997 | CN2249986Y Protector for electronic installation from lightning shock |
| 03/19/1997 | CN2249985Y Energy saving protective switchs for weaving apparatus |
| 03/19/1997 | CN2249984Y Integrated multifunctional self-protecting electric motor |
| 03/18/1997 | US5612847 Power window circuit board overcurrent protection |
| 03/18/1997 | US5612659 Battery protecting circuit breaker |
| 03/18/1997 | US5612629 System and method for detecting fault conditions in a direct current motor |
| 03/18/1997 | US5612604 Method of monitoring a temperature rise of a squirrel cage induction motor |
| 03/18/1997 | CA2069665C Apparatus for detecting short-circuit for use in bi-polar d.c. transmission system |
| 03/13/1997 | DE19533537A1 Storage battery exhaustive discharge protection for uninterruptable power supply (UPS) |
| 03/12/1997 | EP0762622A1 High voltage DC link converter control and protection system |
| 03/12/1997 | EP0762558A2 Anti-snag latch assembly for a connector |
| 03/12/1997 | EP0761492A1 Fail check device and method for AC motor control circuit |
| 03/12/1997 | EP0572588B1 Device for regulating a generator |
| 03/11/1997 | US5610594 Frequency monitoring device |
| 03/11/1997 | US5610579 Apparatus and method for selecting a control source for an electrical switching device |
| 03/11/1997 | US5610532 Isolated DC fault current sensor |
| 03/11/1997 | US5610484 Auto reverse power closure system |
| 03/11/1997 | US5610453 Pulsewidth modulation (PWM) frequency slider |
| 03/11/1997 | US5610452 E-beam high voltage switching power supply |
| 03/11/1997 | US5610425 Input/output electrostatic discharge protection circuit for an integrated circuit |
| 03/05/1997 | EP0760547A2 Battery pack with a lithium ion secondary battery |
| 03/05/1997 | EP0667986B1 Device for protecting an inverter |
| 03/05/1997 | EP0600042B1 Overtemperature sensing and signaling circuit |
| 03/04/1997 | US5608598 Effector with self-compensated contacts for power supply of a receiver circuit |
| 03/04/1997 | US5608327 Methods and apparatus for identifying faulted phases on an electric power transmission line |
| 03/04/1997 | US5608305 For avoiding a reduction in the quality of a secondary battery |
| 03/01/1997 | CA2184652A1 Electrical extension cord with built-in safety protection |
| 02/27/1997 | WO1997007580A1 Sharing arrangement for surge protection circuitry |
| 02/27/1997 | DE19530900A1 Fusible link adjusting appts. for integrated circuit |
| 02/26/1997 | EP0759221A1 Circuitry for detecting earth leakages in energy transmission cables |
| 02/26/1997 | CN2248421Y power-saving controller for electric motor |
| 02/26/1997 | CN1034117C Safety devices for elevator |
| 02/25/1997 | US5606490 Current limiter for voltage/frequency type inverter |
| 02/25/1997 | US5606208 Brushless motor having terminals for connecting winding ends to circuit board lands |
| 02/20/1997 | DE19530385A1 Overspeed protection for three=phase motors |
| 02/19/1997 | EP0758811A2 Electrical circuit for protecting a superconducting magnet during a quench |
| 02/19/1997 | EP0758497A1 Differential current protection for a transformer |
| 02/19/1997 | CN2247887Y AC contactor with double phase failure and overload protection of motor |
| 02/19/1997 | CN2247815Y Single-phase active electric energy meter capable of avoiding fraudulent use of power |
| 02/19/1997 | CN1143276A Circuit unit for charging capacitor |
| 02/18/1997 | US5604656 Electromechanical relays |
| 02/18/1997 | US5604653 Protection component for a three-phase alternator used in automobile vehicles |
| 02/18/1997 | US5604476 Protective device for an electrical consumer |
| 02/18/1997 | US5604422 Transient voltage protection circuit for a DC voltage supply |
| 02/12/1997 | CN2247392Y Adjustable current and voltage limiting protector for voltage regulator |
| 02/12/1997 | CN2247385Y Light controlled protector for motor |
| 02/11/1997 | US5602708 Process and device for electronically monitoring the overload on electric motor drives |
| 02/11/1997 | US5602707 Detection of transformer high side fuse operations in a power transmission system |
| 02/11/1997 | US5602449 Motor controlled surgical system and method having positional control |
| 02/05/1997 | EP0757421A2 Equipment for limitation of fault current in 3-phase networks |
| 02/05/1997 | CN2246864Y Open-phase and over-load protection of three-phase asynchronous motor |
| 02/05/1997 | CN2246863Y Automatic protecting economizer for three-phase motor |
| 02/05/1997 | CN1142128A Gas-insulating type load cut-off system |
| 02/05/1997 | CN1033993C Protection device for distribution line |
| 02/04/1997 | US5600575 Drive protection monitor for motor and amplifier |
| 02/04/1997 | US5600550 Power converter for recreational vehicles and the like |
| 02/04/1997 | US5599112 Axial bearing having a variable coefficient of friction for monitoring wear |
| 02/04/1997 | US5598710 Superconducting apparatus and method for operating said superconducting apparatus |
| 01/29/1997 | EP0755582A1 A device for indicating a destroyed arrester |
| 01/29/1997 | EP0568689B1 Electronic apparatus for measuring the activity of an oil transformer |
| 01/29/1997 | CN2246331Y Electromagnetic motor protector |
| 01/29/1997 | CN1141694A Circuit arrangement |
| 01/28/1997 | US5598312 Device for controlling a mechanism driven by a lens one electric motor |
| 01/22/1997 | CN2245828Y Motor intelligence controllor |
| 01/22/1997 | CN2245818Y Micro-computer monitoring device for electric generating set |
| 01/22/1997 | CN1141098A Overcurrent feed preventing device |
| 01/22/1997 | CN1141097A Device for differentially protecting a power transformer |
| 01/22/1997 | CN1140926A Driving device for induction motor |
| 01/21/1997 | US5596253 Vehicle-mounted motor drive apparatus |
| 01/15/1997 | EP0753923A1 Method, device for producing a high voltage and installation for electrostatic spraying of a coating product |
| 01/15/1997 | EP0753922A2 Circuit for charging a capacitor |
| 01/15/1997 | EP0753350A1 Method for producing high voltage and installation for electrostatic spraying of a coating product |
| 01/15/1997 | EP0658290B1 Process for obtaining triggering signals by the comparison of currents at the ends of a power transmission path |
| 01/15/1997 | EP0617856B1 Flashover between power lines suspended in parallel |
| 01/15/1997 | CN2245292Y Three-phase low voltage direct-insert power supply monitor |
| 01/15/1997 | CN2245291Y Automatic protector for three-phase electric motor |
| 01/09/1997 | WO1997000729A1 System and method for detection and control of ungrounded parts in a production coating line |
| 01/09/1997 | DE19600547A1 Inverter protection circuit for industrial electrical power mains network |
| 01/08/1997 | CN1033776C Start and protection for induction motors |
| 01/07/1997 | US5592393 Method and system for providing protective relay functions |
| 01/07/1997 | US5592354 Audio bandwidth interface apparatus for pilot wire relays |
| 01/02/1997 | EP0751274A1 Actuator |
| 01/01/1997 | CN2244260Y Phase-interruption and overload protective device for three-phase ac motor |
| 01/01/1997 | CN1139307A Power converter protecting apparatus for electric power system |
| 12/27/1996 | EP0750382A2 Current detecting device for mounting on a current-carrying conductor |
| 12/25/1996 | CN2243744Y Protective electronic regulator for automotive and tractor |
| 12/25/1996 | CN2243727Y Electric motor working protector |
| 12/25/1996 | CN2243726Y Short-pass and break-off protector for neon transformer |
| 12/24/1996 | US5587640 Delayed safety braking apparatus for a servomotor control system |
| 12/19/1996 | WO1996041407A1 Power supply for mobile electrical appliances |
| 12/18/1996 | EP0749208A2 Field effect transistor protection circuit |
| 12/18/1996 | EP0749189A1 Overcurrent feed preventing device |
| 12/18/1996 | CN2243137Y Phase-loss over-load protector for ac asynchronous motor |
| 12/17/1996 | US5585990 Electronic motor protection apparatus |