8 MB - POWERLAB

Functionsand characteristicsMicrologic control units 0Overview of functionsAll Masterpact circuit breakers are equippedwith a Micrologic control unit that can bechanged on site.Control units are designed to protect Powercircuits and loads. Alarms may beprogrammed for remote indications.Measurements of current, voltage,frequency, power and power qualityoptimise continuity of service and energymanagement.DependabilityIntegration of protection functions in an ASIC electronic component used in allMicrologic control units guarantees a high degree of reliability and immunity toconducted or radiated disturbances.On Micrologic A, P and H control units, advanced functions are managed by anindependent microprocessor.Micrologic name codesCurrent protection2.0 AX Y ZX: type of protectionb 2 for basic protectionb 5 for selective protectionb 6 for selective + earth-fault protectionb 7 for selective + earth-leakage protection.DB101116Micrologic 2: basic protectionProtection:long time+ instantaneousY: control-unit generationIdentification of the control-unit generation."0" signifies the first generation.Micrologic 5: basic protectionZ: type of measurementb A for "ammeter"b P for "power meter"b H for "harmonic meter".DB101117Protection:long time+ short time+ instantaneousPB100772-32DB101117Micrologic 6: selective + earth-fault protectionDB101118Protection:long time+ short time+ instantaneous+ earth faultMicrologic 7: selective + earth-leakage protectionDB101117DB101119Protection:long time+ short time+ instantaneous+ earth leakage22