DECS-250-LN2CN1N

Overview

The Basler DECS-250-LN2CN1N is a digital excitation control system designed for synchronous generator and motor applications. It provides precise excitation regulation, advanced metering, integrated protection, and flexible operating modes for reliable power system performance.

Control and Sensing

• Voltage and Current Sensing: True RMS, single‑phase or three‑phase

• Generator Metering: Full metering capabilities

• Operating Modes: Automatic Voltage Regulation (AVR), Field Current Regulation (FCR), Field Voltage Regulation (FVR), Power Factor, and var control

Protection Features

• Integrated Generator Protection:

  • 27 / 59 (Undervoltage / Overvoltage)

  • 81 O/U (Overfrequency / Underfrequency)

  • 32R (Reverse Power)

  • 40Q (Reactive Power)

  • EDM (Excitation De‑Magnetization)

  • 59F (Field Overvoltage)

  • 51F (Field Overcurrent)

  • Loss of PMG

  • Field Short Circuit

  • 25 Sync Check

Performance and Communication

• Load Sharing: Over Ethernet

• Auto Tuning: Two PID stability groups

• Power System Stabilizer (Optional): IEEE Std. 421.5 type PSS2A / PSS2B / PSS2C

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