This is the digital module “ANSI 27/59 – Under/Over voltage” for Micrologic X trip unit on MasterPact MTZ offer. A digital module is an advanced function that can be uploaded in Micrologic X trip unit at any stage of the product life cycle. Digital modules allow you to customize MasterPact MTZ circuit breaker to your specific needs. The digital modules are available 24/7 on the Schneider Electric GoDigital store (godigital.schneider-electric.com). The upload of the digital modules is made without interrupting power, using EcoStruxure Power Commission software and a USB cable. This digital module allows to trip the circuit breaker trips when the voltage exceeds the settings. For 27-1 and 59-1 the protection picks up when one of the three monitored voltages reaches its upper or lower limit. For 27-2 and 59-2 the protection picks up when the three monitored voltages have reached the upper or lower limits. The Under/Over voltage protection requires the Micrologic X control unit to be supplied by an external 24 V dc power supply. The Micrologic X control unit firmware (greater than or equal to V002.000.xxx) is compatible with this digital module. Earlier firmware versions need to be upgraded. The benefit is to provide the protection of the generators during abnormal or critical situations (load shedding, source changeover, emergency generator starting).

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