Basic Product Information

Basler Electric DECS-250-LN1SN1N is a high-performance microprocessor-based digital AVR excitation regulator developed
 for synchronous generators and motors. This LN1SN1N configuration supports negative field forcing, multi-mode regulation
and complete generator protection. It delivers precise voltage, VAR and power factor control for power station, industrial genset
 and grid-connected power systems. We supply brand new original and fully inspected surplus DECS-250-LN1SN1N with full test
reports and worldwide delivery.

Full Model: DECS-250-LN1SN1N

Brand: Basler Electric

Product Category: Digital Excitation Controller / Automatic Voltage Regulator (AVR)

Production Status: Active production, surplus stock ready to ship

Origin: United States

Warranty: 12 months for all units

Stock Status: Brand new original / tested surplus available

Lead Time: 3-7 working days international express delivery

Matching Software: BESTCOMSPlus configuration tool

Core Electrical Specifications

Control Power Input: 24/48 VDC dual redundant, 18–60 V wide range

Sensing Input: 3-phase auto-range 50–600 VAC, 40–500 Hz

Excitation Power Stage: 15A PWM output, -150% negative field forcing for 10 seconds

Analog I/O: 4–20mA DC current input, -10~+10 VDC auxiliary signal

Digital Inputs: 16 programmable dry contact inputs

Relay Outputs: 11 programmable Form A contacts + 1 watchdog Form C relay

Response Speed: <0.4 cycle fast excitation response

Operating Temperature: -40°C ~ +70°C

Communication Interfaces: 100Base-T Ethernet, Dual RS-485, CAN bus, IEC 61850 GOOSE support

Compliance Certifications: CE, UL, ANSI/IEEE grid standard

Mechanical Parameters

Mounting: Standard 3U cabinet panel rack mount

Overall Dimension: 483 × 133 × 279 mm

Net Weight: 5.9 KG

Cooling: Natural convection air cooling

Internal Protection: Conformal coated circuit board for harsh industrial environments

Key Product Features

Multi regulation modes: Voltage, VAR, power factor and field current control

Built-in complete ANSI generator protection suite (27,59,81O/U,32R,40Q,25 sync check)

Integrated power system stabilizer (PSS2A/2B/2C) to meet strict grid codes

Auto PID tuning function reduces generator commissioning time

Real-time event logging and multi-language LCD operation interface

True RMS voltage/current sensing adapts high distortion non-linear loads

Ethernet-based genset load sharing for parallel generator systems

Negative field forcing design for fast grid fault isolation

Wide frequency and voltage input range fits all mainstream synchronous generators

Industrial Application Scenarios

Thermal power plant generator excitation control

Hydroelectric power station synchronous unit regulation

Diesel / natural gas backup generator sets

Off-grid industrial power supply systems

Grid-connected distributed power generation equipment

Marine shipboard generator voltage control

Legacy excitation system replacement & upgrade maintenance

Compatible Matching Accessories

Basler PMG permanent magnet generator power supply

BESTCOMSPlus PC communication cable

Generator voltage/current transformer (VT/CT) sets

Cabinet wiring terminal blocks and signal harnesses

Basler series excitation system auxiliary modules

Replacement & Stock Guidance

Direct Replacement Solution: DECS-250-LN1SN1N is a standard universal excitation controller, plug-and-play replacement for old analog AVR and early digital excitation units with minor wiring adjustment

Long-term Maintenance Supply: We keep stable stock of Basler DECS-250 full series variants for power plant emergency spare parts demand

FAQ (Long-tail SEO Keyword Coverage)

Q1: What is the function of Basler DECS-250-LN1SN1N?

Q2: Does DECS-250-LN1SN1N support parallel generator operation?

Q3: Can you supply brand new original Basler DECS-250-LN1SN1N?

Q4: What software is used to program DECS-250-LN1SN1N?