... isolation transformer, EPO & ECO, manual maintenance bypassFeatures:Three phase in and out system, compatible with utility of 380 ... 20%, full load-20%~-40%, power derating between 100% to 70%Frequency window40-70HZBypass inputInput voltage200V/208VInput ... Ports )RS232,RS485,Dry contacts,SNMP card,EPO,Generator interfaceInstallation/ConnectionTop or bottom cable connectionOperation temperature0-40° ...