Smart earth leakage protection - Circutor

Industrial earth leakage protectionEarth leakage protection systems with self-reclosingGiven the current efficient personal andmaterial protection requirements andobligations, and the complexity of someinstallations that require the continuoussupply of electrical energy with the useof overload and earth leakage protectionsystems, CIRCUTOR has developed awide range of units that make safety andservice continuity compatible.Self-reclosing systems are an ideal solutionfor installations that need a constantsupply of electrical energy, without theneed for the usual maintenance staff:}}Rural installations}}Refrigeration chambers}}Public lighting}}Mobile telephony repeaters}}Traffic lights}}Lighting of tunnels}}ATMs}}Cable television}}Etc.The type of protection element installed,those that can be reclosed and underwhich reclosing conditions must be knownby all self-reclosing systems.Self-reclosing systems act in accordancewith the following:}}Earth leakage current (earth leakage)}}Earth leakage current (earth leakage) +overload and short-circuit (circuit breaker).Elements that form an self-reclosing systemTRANSFORMERRELAYTreatment of the signal,measurement and triggerCIRCUIT BREAKERmonitoredEarth leakage transformerCircuit breakerThe earth leakage transformer detectsthe earth leakage. It can be built-in on arelay or as an external element.Self-reclosing relaySelf-reclosing relays add a series ofperformance features (self-reclosing,thermal or overload protection) to theproven reliability and security of non-reclosingearth leakage protection relays.It performs the following functions:}}Detection of anomalies (earth leakageor overload) through the signal generatedby the transducer.}}They analyse the anomaly to see if itmust generate an alarm, depending onthe parameters programmed.}}They also act on power elements,which perform the grid load connectiondisconnectiontasks.The circuit breaker always interrupts theflow of power, which supports the powerin the line protected and is an externalelement of the relay.The circuit breakers that can be associatedto self-reclosing relays are asfollows:}}Motorized circuit breaker (MT)}}Contact circuit breaker with remotecontrol (MCB), with a dual circuit breakerand contact function (the function ofthe contact is bistable).Features of the circuit breaker:}}Nominal current (in contacts)}}Nominal current and thermal protectioncurve (in circuit breakers)}}Features of the control inputs of theoperational element}}Circuit-breaking power}}Auxiliary NO or NC signalling of thecircuit breaker's statusP1-9