Basler Electric DECS-250E Digital Excitation Control System

Overview

The DECS-250E Digital Excitation Control System provides accurate and

reliable regulation, control, and protection for synchronous motors or

generators. Three DECS-250E models can supply a maximum of 50 Adc, 100

Adc, or 200 Adc of excitation current in a static or rotary exciter application. All

DECS-250E components are housed in a compact enclosure which makes for

a simple and cost-effective installation for a wide variety of applications.

Features

• Precise excitation control for synchronous generator or synchronous

motor applications.

• True RMS sensing, single-phase or three-phase voltage and current.

• Full generator or motor metering capabilities.

• Automatic Voltage Regulation / Field Current Regulation / Field Voltage

Regulation, Power Factor and var modes of operation.

• Integrated generator protection (27/59. 81O/U, 32R, 40Q), 59F, 51F, Field

Short Circuit, and 25 Sync Check.

• Load sharing over Ethernet.

• Auto tuning feature with two PID stability groups.

• Configurable protection.

• Conformal coating is applied to certain internal circuitry for additional

protection and reliability.

• Overexcitation limiting (with temperature compensation).

• Underexcitation limiting.

• Stator current limiting (with temperature compensation).

• Var limiting.

• Underfrequency limiting or V/Hz limiting.

• Trending, oscillography, and sequence of events recording.

• Ten programmable contact inputs.

• Nine programmable contact outputs.

• I/O expansion module compatibility.

-AEM-2020 Analog Expansion Module.

-CEM-2020 Contact Expansion Module.

• Single- or three-phase power input.

• Automatic synchronizer option.

• Compact enclosure.

Benefits

• Reduce your setup time with Basler’s intuitive BESTCOMSPlus®

software that simplifies complex setup with simple drag-and-drop

programmable logic, visual real-time strip chart capabilities, and

cutting edge auto PID selection capabilities.

• The auto tuning function automatically establishes optimum PID

and gain settings, taking the guesswork out of system setup,

reducing commissioning time and cost while maximizing overall

system performance.

• The Offline Simulator in BESTlogic™Plus helps test and

troubleshoot logic without expensive hardware.

• A 50. 100. 200 ampere positive forcing rectifier bridge can be

selected to provide optimum response to the generator main field

or exciter field.