Electricity: electrical systems and devices – Safety and protection of systems and devices – With specific current responsive fault sensor
Patent
1990-04-02
1993-05-25
Pellinen, A. D.
Electricity: electrical systems and devices
Safety and protection of systems and devices
With specific current responsive fault sensor
318490, 361 23, 364483, H02H 708
Patent
active
052145590
ABSTRACT:
A monitoring device having a switching mechanism to open or close electric circuits in case of overload which operates as a function of a current-detecting device includes a processor and setpoint memories for comparing and evaluating actual values. A device for detecting additional load operational errors, statistical operating data, and maintenance instructions from at least the load current over the lifetime of the device and providing a run display to display this data are consecutively integrated into the monitoring device. Furthermore, input keys are provided for setting desired parameters, which can be displayed in the run display.
REFERENCES:
patent: 4319298 (1982-03-01), Davis et al.
patent: 4331997 (1982-05-01), Engel et al.
patent: 4351012 (1982-09-01), Elms et al.
patent: 4423458 (1983-12-01), Stich
patent: 4423459 (1983-12-01), Stich et al.
patent: 4446498 (1984-05-01), Stich
patent: 4470092 (1984-09-01), Lombardi
patent: 4623967 (1986-11-01), Naimer
patent: 4827369 (1989-05-01), Saletta et al.
patent: 4839830 (1989-06-01), Amey et al.
IEEE Transactions on Power Apparatus and Systems, vol. PAS-99, No. 1, Jan./Feb. 1980, pp. 152-157: Digital Programmable Time-Parameter Relay Offers Versatility and Accuracy, by E. O. Schweitzer.
IEEE Transactions on Power Apparatus and Systems, vol. PAS-99, No. 1 Jan/Feb. 1980, pp. 344-351: Application of Microprocessors to the Control and Protection System at Substation, by Tanaka et al.
Electrotechnik, 1987, #6, pp. 36 & 39.
EC&M, Sep. 1987, pp. 68-73: Total Motor Protection by Arthur Freund et al.
Freitag Richard
Froehlich Paul
Jaehne Hans-Joachim
Neumann Siegfried
Zerbian Erich
Osborn David
Pellinen A. D.
Siemens Aktiengesellschaft
LandOfFree
Monitoring device with a switching mechanism does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Monitoring device with a switching mechanism, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Monitoring device with a switching mechanism will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-902267