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Phase Monitor Relays For 3 Phase Systems

The selection of Macromatic phase monitor relays available through Major Electronix are designed to work with 3 phase systems. This includes both plug-in and surface mount housings, which can check for phase errors. Certain units only monitor for one type of phase error, but most are multi-function units. Functions such as phase loss, phase reversal, phase unbalance, overvoltage, and undervoltage are all possible options. Phase loss happens if one of the three phases is lost. Phase reversal occurs if the sequence runs out of order. A phase unbalance error takes place if a single phase carries more or less of the load. Under or over voltage errors happen if the voltage for all three phases either decreases or increases at the same time.