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FEATURES DVR2000E units have the following features and capabilities. Four control modes: automatic voltage regulation (AVR), manual or field current regulation (FCR), power factor (PF) regulation, and reactive power (VAR) regulation. • Programmable stability settings. • Soft start control with an adjustable time setting in AVR control mode. • Overexcitation (OEL) limiting in AVR, VAR, and PF control modes. • Underfrequency (volts/hertz) regulation. • Crowbar circuitry protects the field . • Overtemperature protection. • Three-phase or single-phase generator voltage (RMS) sensing/regulation in AVR mode. • Single-phase generator current sensing for metering and regulation purposes. • Field current and field voltage sensing. • Four contact sensing inputs for system interface. • One common output relay for alarm indication and trip functions. • Six protection functions (overexcitation shutdown, generator overvoltage shutdown, DVR overtemperature shutdown, loss of generator sensing shutdown, overexcitation limiting and crowbar shutdown). • Generator paralleling with reactive droop compensation and reactive differential compensation. • Front-panel human-machine interface (HMI) indicates system and DVR2000E status and gives the ability to make setting changes at the front panel. • Rear RS-232 communication port for personal computer communication using MARATHON-DVR2000E- COMS Windows based software for fast, user-friendly, setup and control.