Electric power system with remote monitoring and control of protective relays
Monitoring and control of analog electromechanical protective relays and digital mcroprocessor based relays is integrated through a system including slave stations which record and time tag contact ...
View Patent Detail from MicroPatent
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System for time stamping events using a remote master clock
... contact activity in the protective relays of an electric power distribution network, are time stamped using a single remote clock by a system which includes one or more slave stations monitoring the ...
View Patent Detail from MicroPatent
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System and method for calibration of data in an electric power monitoring system
... is used in electric power monitoring systems, e.g. protective relays, and includes a test unit for applying a test signal to the front end of a data acquisition section of the power monitoring system ...
View Patent Detail from MicroPatent
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Apparatus for insuring the security of output signals from protective relays ...
In a protective relay (10), which contains a microprocessor (30), for monitoring a power transmission line, an output enable decoder (72) and a one-shot timer (74) produce a very short (5 microsecond ...
View Patent Detail from MicroPatent
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System and method for calibration of data in an electric power monitoring system
... is used in electric power monitoring systems, e.g. protective relays, and includes a test unit for applying a test signal to the front end of a data acquisition section of the power monitoring system ...
View Patent Detail from MicroPatent
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Three-phase unbalance and voltage monitor circuit
... a monitoring apparatus for a multiphase electrical system of very simple and reliable circuit design capable of monitoring such a system and producing fault signals to operate protective relays and ...
View Patent Detail from MicroPatent
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SYSTEM AND METHOD FOR CALIBRATION OF DATA IN AN ELECTRIC POWER MONITORING SYSTEM
... in electric power monitoring systems, e.g. protective relays, and includes a test unit (34) for applying a test signal to the front end of a data acquisition section of the power monitoring system and ...
View Patent Detail from MicroPatent
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Diagnostic monitor system for heat pump protection
A method and apparatus for monitoring the protective circuit associated with a heat pump system wherein both the high pressure switch on the condensor side of the compressor and the low temperature ...
View Patent Detail from MicroPatent
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Electrical starting system for diesel engines
... timers for control of glow plug operation and duty cycles, sensing of glow plug current for protective shutdown, control relays and/or solid state switches for control of glow plug current(s), manual ...
View Patent Detail from MicroPatent
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Apparatus for safety monitoring in protective arrangements with normal and ...
In an apparatus for safety monitoring of protective arrangements with normal or enhanced safeguard for machinery performing multiple-axis rotations with shutoff contactors in the power supply section ...
View Patent Detail from MicroPatent
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