BASLER ELECTRIC DECS-200-2L Digital Excitation Controller

Product Description

Model: DECS-200-2L, Basler Electric DECS-200 series dual-channel digital excitation controller (Digital AVR), integrated excitation regulator for synchronous generators, original production discontinued. It adopts PWM power stage architecture, integrating automatic voltage regulation, field current regulation, reactive power / power factor control, multiple limiters, sequence of events recording and oscillography. Equipped with front-panel HMI, configurable and monitored via BESTCOMS software. Dual redundant channels enhance reliability. It adjusts DC current of generator excitation winding to stabilize terminal voltage and reactive power output. It is critical spare part in excitation cabinets for steam and gas turbine generator sets.

Technical Specifications

• Brand: BASLER ELECTRIC
• Model: DECS-200-2L
• Product Type: Dual-channel Digital Excitation Controller / Digital AVR
• Series: DECS-200 Series
• Applicable Machine: Synchronous generators, compatible with AC exciters and static excitation systems
• Regulation Accuracy: ±0.25% of rated voltage
• Excitation Output: DC 0~120V (extendable up to 300VDC), continuous 10ADC, forcing 30ADC /10s
• Control Supply: 85~140VAC / 170~280VAC, 24VDC optional
• Frequency: 50/60Hz
• Communication: Front RS232, side RS485
• Configuration Software: BESTCOMS for setup, monitoring and oscillography
• Built-in Functions: PSS power system stabilizer, droop, line drop compensation, multi protection limiters, SOE event log, fault oscillography
• Operating Temperature: -40℃ ~ +70℃
• Protection Class: IP20 (installed inside control cabinet)
• Certifications: CE, UL, CSA
• Compliance: IEEE 421.5
• Mounting: Panel flush mounting inside control cabinet

Application

Deployed for gas turbine, steam turbine, diesel and hydro synchronous generators inside excitation control cabinets. It regulates generator field current in real time to stabilize terminal voltage and control reactive power / power factor, with overexcitation, underexcitation and overcurrent protection, fault recording and event logging. Typical applications include combined cycle power plants, thermal power stations, captive power plants and offshore generator packages. Suitable for excitation system retrofit, unit overhaul, spare replacement and legacy AVR upgrade projects.

DECS-200 Series Model List

DECS-200-2L DECS-200-1L (single channel) DECS-200-1C DECS-200N-C1 DECS-250 (new generation upgraded model) DECS-250E