FEATURES
●
Microprocessor based control featuring choice of three control modes standard: Automatic Voltage Regulation (AVR)Power Factor Regulation (PF)Reactive Power Regulation (Var)●Programmable stability settings
●Soft start control with an adjustable time setting in AVR control mode
reactive to
●Dual Slope Underfrequency (volts/hertz)regulation
●Three-phase or single-phase generator voltage (RMS) sensing/regulation in AVR mode ●Single-phase generator current sensing for regulation purposes
●Field current and field voltage sensing
●Five contact sensing inputs for system interface ●One common LED for visual indication of Alarm and Shutdown fault conditions ●
Fault Shutdown Driver and Alarm Output Driver for indication of Alarm and Shutdown fault conditions
●
Generator paralleling with reactive droop compensation and reactive differential compensation
●Line drop compensation
●Remote communication interface via CAN 2.0B ●Ten generator protective functions ●
UL 508A Recognized and CE certified
WORLDWIDE PRODUCT SUPPORT
●Worldwide parts availability through the Caterpillar dealer network
●Over 1,800 dealer branch stores operating in 166 countries.
●99.7% of parts orders filled within 24 hours.The best product support record in the industry.●Caterpillar dealer service technicians are
trained to service every aspect of your electric power generation system.
COMPLETE SYSTEM INTEGRATION Fully designed and factory tested to work seamlessly with Cat Generator using Shunt,PMG, or AREP excitation systems and EMCP
controls.
Caterpillar is leading the power generation marketplace with Power Solutions engineered to deliver unmatched flexibility, expandability,reliability, and cost-effectiveness.
LEHE3225
The Cat Digital Voltage Regulator is a microprocessor based control designed to provide precise volta
ge control, robust transient response, and generator protection with industry leading features and versatility.
PROTECTIVE FUNCTIONS ●Generator Overvoltage
●Generator Undervoltage
●Loss of Excitation
●Instantaneous Field Overcurrent ●Over Excitation
●Loss of Sensing
●Diode Fault Monitor
●Internal Watchdog Failure
●Internal Memory Failure
●Fault Reset Closed Too Long
REGULATION CHARACTERISTIC — FIGURE 1

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