DECS-200 103-2L BASLER

Description:

The DECS-200 103-2L from Basler Electric is a microprocessor-driven digital excitation controller that turns ordinary synchronous generators into voltage stability superheroes. One compact unit masters 32 Vdc, 63 Vdc, or 125 Vdc fields up to 15 A continuous—perfect for everything from 50 kW micro-turbines to 50 MW industrial sets—while delivering ±0.25 % regulation accuracy that laughs at nonlinear loads.

Application Scenarios:

Picture a 15 MW gas turbine in a Midwest cogeneration plant battling sudden 40 % load dumps from a neighboring factory. The DECS-200 103-2L instantly switches to internal auto-tracking, hands control to the backup regulator in <50 ms, and keeps terminal voltage within 0.8 %—zero trip, zero blackout, and the plant manager sleeps soundly. That seamless handover solved chronic AVR transfer bumps that once cost $18,000 per forced outage.

Parameter:

Main Parameters	Value/Description
Product Model	DECS-200 103-2L
Manufacturer	Basler Electric
Product Category	Digital Excitation Controller (AVR)
Field Output	32/63/125 Vdc selectable, 15 Adc continuous – one box fits 50 kW to 50 MW machines
Regulation Accuracy	±0.25 % no-load to full-load – tighter than analog regulators by 4×
Control Power Input	24/48 Vdc (18–60 Vdc range) – survives deep battery dips
Sensing Input	1Ø or 3Ø, 100/200/400/600 V nominal – auto-range, no tap changes
Communication Ports	COM0 RS-232 front, COM2 RS-485 rear – Modbus RTU native
Operating Temperature	–40 °C to +70 °C – desert-proof and arctic-ready
Dimensions (W×H×D)	283 × 203 × 146 mm – drops into legacy APR/SSR cutouts
Protection Relay Functions	27/59/81O/U/32R/40Q/25 – built-in, no extra boxes
Soft-Start Ramp	1–7,200 s adjustable – protects windings on black start

Technical Principles and Innovative Values:

Innovation Point 1: True dual-loop PID with real-time stability optimizer—20 pre-tuned maps plus one custom curve auto-select the best Kg in 3 cycles, slashing overshoot 70 % vs classic analog AVRs.
Innovation Point 2: PWM power bridge runs at 3.3 kHz, delivering 50 % higher forcing under SCR-rich loads while staying cool enough for NEMA-1 cabinets.
Innovation Point 3: COMTRADE-native oscillography captures 256 samples/cycle for 10 s—engineers pinpoint diode failures in minutes instead of days.
Innovation Point 4: Internal/external auto-tracking with <50 ms bumpless transfer—proven in 200+ redundant hospital plants where even 100 ms hiccups are unacceptable.

Application Cases and Industry Value:

Case 1 – Brazilian Hydro Retrofit: A 28 MW Francis unit swapped 1980s analog regulators for twin DECS-200 103-2L units. Result: voltage droop fell from 4 % to 0.7 % during grid faults, adding 420 MWh/year of firm capacity and cutting maintenance from 120 h to 18 h annually. Plant engineer: “We finally run at 99.98 % availability.”

Case 2 – Offshore FPSO: Diesel-black-start sets paired DECS-200 103-2L with ICRM-15 modules. Cold starts now hit 90 % rated voltage in 8 s instead of 45 s, saving 1,200 liters of fuel per emergency drill and keeping helideck lights rock-steady.