| 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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| 03/04/1987 | CN86200631U Motor protectorate of electric-saving thyratron and multi-function |
| 03/04/1987 | CN86200129U Burn and break-proof relay |
| 03/04/1987 | CN86104894A Protective trigger of crystal shutter tube in impulsaator |
| 03/03/1987 | US4648015 Filter capacitor discharge circuit for a DC-DC converter |
| 03/03/1987 | US4648003 Electrical circuit arrangement for the protection of presses |
| 03/03/1987 | US4647825 Motor controller |
| 02/25/1987 | EP0211765A1 Security circuits for a switching regulator power supply |
| 02/25/1987 | EP0211005A1 Transistor inverter interlock circuit |
| 02/24/1987 | US4646195 Motor protector particularly suited for use with compressor motors |
| 02/24/1987 | US4645992 Electronically controlled servomotor limit stop |
| 02/24/1987 | CA1218409A1 Pulse width modulated inverter for unbalanced and variable power factor loads |
| 02/19/1987 | DE3528540A1 Device for monitoring the rotor current of a slipring-rotor motor of a converter cascade |
| 02/18/1987 | CN86201285U Improved protection warner for enclosed compression engine winding |
| 02/17/1987 | US4644439 Fast-acting spark-over detector |
| 02/12/1987 | WO1987000770A1 Overspeed protection signal override system for a centrifuge apparatus |
| 02/12/1987 | DE3528409A1 Method and device for monitoring the load state of a rotating mechanism which is driven by a field-oriented rotating-field machine |
| 02/10/1987 | US4642749 Replica driver transformer for inverter circuit |
| 02/10/1987 | US4642747 Fault-protection apparatus for static AC-to-AC converters and unrestricted frequency changer (UFC) system including such fault-protection apparatus |
| 02/10/1987 | US4642548 Control apparatus for charging generator |
| 02/10/1987 | US4642478 Mechanically operated pressure switch having solid state components |
| 02/04/1987 | CN85104228A Multifunctional automatical contactor |
| 02/04/1987 | CN85102463A Method and device for detecting load of motor and protecting motor from overload |
| 02/03/1987 | US4641231 Apparatus and method for failure testing of a control turn-off semiconductor |
| 02/03/1987 | US4641074 Synchronous motor protection |
| 02/03/1987 | US4641067 Motor control method and apparatus therefor |
| 02/03/1987 | US4641042 Power supply system and a control method thereof |
| 02/03/1987 | CA1217528A1 Lithium battery protection circuit |
| 01/29/1987 | DE3525942A1 Switched-mode power supply |
| 01/28/1987 | EP0210093A1 Method and device for monitoring the transmission of signals of a differential protection relay |
| 01/28/1987 | EP0209765A1 Electrical distribution installation |
| 01/28/1987 | CN85104416A Electric interlocking loop for switching device |
| 01/24/1987 | CN86103656A Leakage and ground-failure-screening circuit |
| 01/20/1987 | US4637092 Vacuum cleaner with agitator |
| 01/14/1987 | EP0207966A1 Generating system with fault detection. |
| 01/13/1987 | US4636932 dv/dt Protection circuit device for an AC-DC converter apparatus |
| 01/13/1987 | US4636929 Abnormal state detecting circuit of inverter |
| 01/13/1987 | US4636702 Energy economizer controlled-current start and protection for induction motors |
| 01/13/1987 | CA1216625A1 Current source sine wave inverter |
| 01/08/1987 | DE3528641A1 High-voltage DC voltage source |
| 01/08/1987 | DE3523694A1 Pressure-reducing device for pneumatic door drives |
| 01/07/1987 | CN85105328A Energy economizer controlled-current start and protection for induction motors |
| 01/06/1987 | US4635157 Generator protecting relay |
| 01/06/1987 | US4635045 Failed fuse detector and detecting method for rotating electrical equipment |
| 01/06/1987 | US4635044 Failed fuse detector and detecting method for rotating electrical equipment |
| 01/06/1987 | US4634955 Malfunction detector for detecting open-circuit condition at DC generator output terminal |
| 01/06/1987 | US4634936 Intrinsically safe miner's lamp |
| 12/30/1986 | US4633381 Inverter shoot-through protection circuit |
| 12/30/1986 | US4633358 H-switch circuit with an overcurrent protection circuit |
| 12/30/1986 | US4633151 Series connected transistor protection circuit |
| 12/30/1986 | EP0206104A2 FET gate driver circuit |
| 12/30/1986 | EP0205924A2 Monitoring system for detecting quench of superconductive coils |
| 12/30/1986 | EP0205730A1 Security device for an electrically driven tool |
| 12/30/1986 | EP0205596A1 Pump control apparatus and method. |
| 12/23/1986 | US4631655 Power distribution system |
| 12/23/1986 | US4631622 Multiple static trip circuit breaker coordination |
| 12/18/1986 | WO1986007501A1 Proportional base drive circuit |
| 12/17/1986 | EP0204930A1 Protective device for an electromagnetic load |
| 12/17/1986 | CN86200566U Universal electronic energy-saving safeguard operated in the case of "loss of phase" for 3-phase motor |
| 12/17/1986 | CN86101917A Gas insulating apparatus |
| 12/17/1986 | CN86101390A Protective relaying apparatus for providing fault-resistance correction |
| 12/16/1986 | US4630164 Protective circuit for complementary field-effect transistors |
| 12/16/1986 | US4629969 Apparatus for generating a signal indicative of a fault occurring in an electric circuit connected to an AC network |
| 12/16/1986 | US4629035 Speed control apparatus for elevator |
| 12/16/1986 | EP0167592A4 Detector for shorted rotating diode of a brushless alternator. |
| 12/10/1986 | EP0204594A1 Interrupting device protected against short-circuit currents |
| 12/10/1986 | EP0203972A1 Control and drive arrangement for movable members |
| 12/10/1986 | CN85104067A Regulator fauet protection circuit |
| 12/09/1986 | US4628395 Overload protecting circuit for an inverter device |
| 12/09/1986 | US4628234 Safety device for automatic window regulator |
| 12/04/1986 | WO1986007214A1 Protection circuit for a supply unit |
| 12/03/1986 | EP0203571A2 Static inverter including a circuit to increase the current in case of a short circuit |
| 12/03/1986 | EP0203392A2 Radiator cooling system in an internal combustion engine |
| 12/03/1986 | CN85109437A Re-regulation circuit for automobile tachometep detection circuit |
| 12/02/1986 | US4626954 Solid state power controller with overload protection |
| 12/02/1986 | US4626952 Protection apparatus for a transistor inverter |
| 12/02/1986 | US4626753 Motor speed control by measurement of motor temperature |
| 12/02/1986 | CA1214846A1 Control apparatus for a step drive |
| 11/25/1986 | US4625291 Process for monitoring a driven, movable door or the like |
| 11/25/1986 | US4625254 Voltage trigger means for a series capacitor protector |
| 11/25/1986 | CA1214538A1 Protective relay apparatus and method for providing single-pole tripping |
| 11/20/1986 | WO1986006921A1 Protection circuit for an inverter |
| 11/18/1986 | US4623949 In a power system network |
| 11/18/1986 | US4623826 Stall protection circuit for brushless motor control |
| 11/18/1986 | US4623328 Pump monitor for photoactivation patient treatment system |
| 11/11/1986 | US4622508 Lithium battery protection circuit |
| 11/05/1986 | CN85205371U Reversible controller for motor |
| 11/04/1986 | US4621298 Dual voltage distribution transformer with internal varistor surge protection |
| 10/29/1986 | EP0199172A1 Device for determining an insufficient or lost excitation of a synchronous machine |
| 10/29/1986 | EP0198868A1 Electrical components incorporating a temperature responsive device. |
| 10/28/1986 | US4620296 Protection system for immunizing a controlled d-c power supply against a-c line voltage interruptions |
| 10/28/1986 | US4620272 Line-regenerative motor controller with current limiter |
| 10/28/1986 | US4620257 Carrier relay system |
| 10/28/1986 | CA1213321A1 Transistor inverter circuit |
| 10/22/1986 | EP0198684A2 Relays |
| 10/22/1986 | EP0198468A2 Protective device for integrated circuit |
| 10/21/1986 | US4618933 Method for detecting a fault or also the direction of a fault in electric lines and means for executing this method |
| 10/21/1986 | US4618811 Voltage regulator for charging generator |
| 10/21/1986 | CA1212990A1 Intrinsically safe miner's lamp |
| 10/15/1986 | EP0197778A2 Gas insulated switchgear |
| 10/15/1986 | EP0197352A1 Method and device for the operation of a HVDC short interconnection in case of power system faults |