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Search results with tag "And overvoltage protection"
Ch 11 - Generator Protection
www.myprotectionguide.comOverexcitation and Overvoltage Protection (24, 59) •Modern Excitation Systems include over excitation limiting and protection, but it may take several seconds to limit •Overexcitation occurs when the V/Hz ratio exceeds 105% at FL and 110% at no load •V/Hz relays set at 110% with a 5 – 10 sec delay •Generator overvoltage can occur ...
VIPer22A-E VIPer22ADIP-E, VIPer22AS-E
www.st.comLow power OFF-line SMPS primary switcher Features Fixed 60 kHz switching frequency 9 V to 38 V wide range VDD voltage Current mode control Auxiliary undervoltage lockout with hysteresis High voltage start-up current source Overtemperature, overcurrent and overvoltage protection with auto-restart Table 1. Typical power capability Description