| 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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| 04/01/1986 | US4580205 Current-type GTO inverter using GTO in its surge voltage clamping circuit |
| 04/01/1986 | US4580082 Method and devices for detecting whether a direct-current motor has slowed-down and a motor equipped with a device of this type |
| 04/01/1986 | CA1202673A1 Overtemperature speed control for a variable speed device |
| 04/01/1986 | CA1202669A1 Series capacitor protective circuit |
| 03/26/1986 | EP0175120A1 Protecting device for an electric network |
| 03/25/1986 | US4578623 Burn-out preventive circuit for commutatorless motor |
| 03/25/1986 | CA1202366A1 Generator system with fault condition excitation |
| 03/19/1986 | EP0174786A2 Solid state power controller with overload protection |
| 03/18/1986 | US4577253 Method for limiting the fault-generated currents of circuit breakers in a high-voltage switching system and application of the method |
| 03/18/1986 | CA1202080A1 Current ratio-differential relay |
| 03/18/1986 | CA1202076A1 Method and device to prevent uncontrolled firing of valve thyristors |
| 03/11/1986 | US4575662 Vehicle power window control circuit |
| 03/11/1986 | CA1201796A1 Protective relay system |
| 03/11/1986 | CA1201766A1 Programmable motor protector |
| 03/04/1986 | US4574341 Current supply apparatus for an A.C. consumer |
| 02/26/1986 | EP0172305A1 Mos transistor circuit with breakdown protection |
| 02/25/1986 | US4573132 Thermal model for electrical apparatus |
| 02/19/1986 | EP0171880A2 Energy economizer controlled-current start and protection for induction motors |
| 02/19/1986 | EP0171495A1 MOS transistor circuit with breakdown protection |
| 02/19/1986 | EP0171489A1 Overcurrent detection for a direct current generator with controlled rectifier |
| 02/19/1986 | EP0171446A1 Thermic overload protection for a commutator or slipring-motor |
| 02/12/1986 | EP0171245A2 Overheat preventing system of A.C. motor |
| 02/12/1986 | EP0170883A1 By-pass element |
| 02/11/1986 | US4570199 Protection circuit for voltage regulator of vehicle mounted generator |
| 02/11/1986 | US4570198 Low voltage alternator having short circuit protection |
| 02/11/1986 | US4570109 Irradiation device |
| 02/11/1986 | CA1200594A1 Protective relay methods and apparatus |
| 02/11/1986 | CA1200582A1 Method of measuring the distance of a fault on a line taking account of distributed capacitances |
| 02/05/1986 | EP0170138A1 Protective device for an electrical-power system |
| 02/05/1986 | EP0170088A1 By-pass element |
| 02/04/1986 | US4568996 Protective circuit for a separately excited d-c motor |
| 02/04/1986 | US4568908 Compact resistor assembly |
| 02/04/1986 | US4568872 Method of measuring the distance of a fault on a line taking account of distributed capacitances |
| 02/04/1986 | CA1200281A1 Power converter |
| 01/29/1986 | EP0169539A2 Control apparatus for charging generator |
| 01/29/1986 | EP0169313A1 Transformer protective relay |
| 01/28/1986 | CA1199962A1 Electrostatic voltage control circuit |
| 01/28/1986 | CA1199959A1 Protective control arrangement for duty cycle controlled sheathed heating elements |
| 01/22/1986 | EP0168562A2 Hoisting machine with overload protection |
| 01/22/1986 | EP0168552A2 MOS transistor ciruit with breakdown protection |
| 01/21/1986 | US4565998 Diode failure detecting device in rotary rectifier |
| 01/15/1986 | EP0167592A1 Detector for shorted rotating diode of a brushless alternator |
| 01/08/1986 | EP0166954A1 Method for the reduction of dynamic overvoltages in an alternating current grid system |
| 01/08/1986 | EP0166932A1 Protective circuit arrangement |
| 01/08/1986 | EP0166813A2 Supervisory apparatus |
| 01/07/1986 | CA1199066A1 Ultra-high speed protective relay apparatus and method for providing single pole switching |
| 01/01/1986 | CN85200741U Multiple-protection contactor for three-phase electric motor |
| 12/31/1985 | US4562390 Insulation resistance measurement in static leonard apparatus |
| 12/31/1985 | US4562389 Automatic screwdriver or torquing tool control system |
| 12/31/1985 | US4562387 Vehicle power window control |
| 12/31/1985 | US4561691 Safety device for electromechanical opening and closing mechanism |
| 12/27/1985 | EP0165864A1 Protection circuit for an electric motor with variable speed |
| 12/27/1985 | EP0165803A2 A system and an apparatus for locating a grounding fault on electric power equipment |
| 12/24/1985 | US4561120 Protective relaying system |
| 12/24/1985 | US4560922 Method for determining the direction of the origin of a disturbance affecting an element of an electrical energy transfer network |
| 12/18/1985 | EP0164770A1 Static relay for low-voltage direct current |
| 12/18/1985 | EP0164711A2 Method for detection and location of a fault point on a power transmission line and device for carrying out the method |
| 12/17/1985 | US4559577 Drilling machine |
| 12/17/1985 | US4559576 Protection device for a superconducting magnetic coil assembly |
| 12/17/1985 | US4559491 Method and device for locating a fault point on a three-phase power transmission line |
| 12/17/1985 | US4559486 Detector for shorted rotating diode of a brushless alternator |
| 12/17/1985 | CA1198201A1 Protective relay apparatus |
| 12/17/1985 | CA1198158A1 Generator shorted diode protection system |
| 12/11/1985 | EP0163691A1 Switch current sensing with snubber current suppression in a push-pull converter |
| 12/04/1985 | EP0162911A1 Detector for shorted rotating diode |
| 12/03/1985 | US4556946 Ground detection arrangement for A.C. generator |
| 11/26/1985 | US4555754 Equalizer circuit for switches connected in series |
| 11/21/1985 | EP0161620A1 Device delivering a fault indicating signal for an electrical circuit connected to the power network |
| 11/21/1985 | EP0161446A2 Semiconductor integrated circuit comprising a protective transistor and a MOS transistor with an LDD structure |
| 11/21/1985 | EP0161407A1 Protective relay for a power system |
| 11/21/1985 | EP0161403A1 Protective relay for a power system |
| 11/19/1985 | CA1196954A1 Method and arrangement for protecting a thyristor switch of a pulse generator |
| 11/12/1985 | US4553139 Vacuum monitor for vacuum interrupter |
| 11/10/1985 | CN85200444U Relay compound type apparatus for protecting pull-out of synchronous motor |
| 11/05/1985 | US4551811 Ground detection arrangement for an A.C. generator |
| 11/05/1985 | US4551780 Apparatus for reducing subsynchronous frequencies in a power supply |
| 10/29/1985 | US4550277 Overload detection and warning system for electric motors in power tools and the like |
| 10/22/1985 | US4549242 Molded case circuit breaker with cooling and protection for the static tripping unit |
| 10/16/1985 | EP0158421A1 Door close mechanism |
| 10/16/1985 | EP0158208A1 Surveillance circuit arrangement for a superconducting magnet winding |
| 10/16/1985 | EP0157868A1 Obstruction detection means |
| 10/15/1985 | US4547720 Induction motor start-stall detection apparatus and method |
| 10/15/1985 | CA1195432A1 Protection circuit for integrated circuit devices |
| 10/15/1985 | CA1195392A1 Protective relay with second harmonic suppression |
| 10/08/1985 | US4546423 Multiple inverters with overcurrent and shoot-through protection |
| 10/08/1985 | CA1194929A1 Coordinated load commutated inverter protection system |
| 10/08/1985 | CA1194923A1 Overvoltage protection for low resistance motor windings |
| 10/01/1985 | US4544982 Electrical equipment protection apparatus and method |
| 10/01/1985 | US4544978 Circuit for the arcless de-energization of a direct current load |
| 09/25/1985 | EP0155408A1 Differential-type protective relay |
| 09/24/1985 | US4543521 Charge control microcomputer device for vehicle |
| 09/24/1985 | CA1194105A1 Open circuit current transformer protection circuit |
| 09/24/1985 | CA1194097A1 Protective means for series capacitors |
| 09/17/1985 | US4542468 Ground detection arrangement for an A.C. generator |
| 09/17/1985 | US4542440 Switch current sensing with snubber current suppression in a push-pull converter |
| 09/17/1985 | US4542324 Overtemperature speed control for a variable speed drive |
| 09/17/1985 | CA1193707A1 Protective relay for power system |
| 09/10/1985 | US4541029 Over-load and light-load protection for electric machinery |
| 09/10/1985 | US4541002 Protective device for a semiconductor integrated circuit including double polysilicon resistor |
| 09/10/1985 | CA1193317A1 Thermal model for electrical apparatus |