Basler Electric

Basler Electric DECS-250-LN2SN1N Digital Excitation Control System

SKU DECS-250-LN2SN1N

In stock
  • 12-month warranty
  • Free returns within 30 days
  • Manufacturer: Basler Electric

  • Product No.: DECS-250-LN2SN1N

  • Country of origin:United States

  • Product Type: 15-inch display 1024 x 768

  • Payment: T/T, Western Union

  • Weight: 6620g

  • Dimensions: 219.0 mm x 304.8 mm x 159.0 mm (D x H x W)

  • Shipping port: Xiamen

  • Warranty: 12 months

Description

The Basler Electric DECS-250-LN2SN1N is a digital excitation control system designed for precise voltage, var, and power factor regulation of synchronous generators and motors. The DECS-250-LN2SN1N configuration integrates a 24/48 Vac/Vdc power supply, internal and external autotracking capabilities, spring type terminals, and a 100Base-T Ethernet communication interface.

Equipped with a pulse-width-modulated (PWM) power stage delivering up to 15 Adc full-load continuous current, the system supports 1-phase or 3-phase true RMS sensing for voltage and current, integrated generator protection, auto-tuning stability controls, and diagnostic logging. Built-in communication interfaces include USB, RS-232, RS-485, CAN bus, and 100Base-T Ethernet for unit-to-unit communication and system setup via BESTCOMSPlus software.

Features

  • Complete excitation control supporting Automatic Voltage Regulation (AVR), Field Current Regulation (FCR), Field Voltage Regulation (FVR), Power Factor (PF), and var operating modes
  • True RMS single-phase or three-phase generator and bus voltage sensing
  • Full generator metering and integrated generator protection functions (27/59, 81O/U, 32R, 40Q, EDM, 59F, 51F, Loss of PMG, Field Short Circuit, and 25 Sync Check)
  • Pulse-width-modulated (PWM) power stage adaptable to shunt, auxiliary winding, permanent magnet, or DC-fed systems
  • Auto-tuning feature with two PID stability groups
  • Overexcitation, underexcitation, stator current, var, and underfrequency / V/Hz limiters
  • Internal and external autotracking capabilities
  • Load sharing over Ethernet and Modbus TCP protocol
  • Conformal-coated internal circuitry for enhanced environmental protection
  • Integrated trending, oscillography, and sequence of events recording
  • Compatible with AEM-2020 Analog Expansion Module and CEM-2020 Contact Expansion Module

Applications

  • Synchronous generator excitation control
  • Synchronous motor excitation control
  • Industrial power generation plants
  • Utility grid-connected power generation facilities

Ordering Information

Style Code Element Selection Code Description
Power Supply L 24/48 Vac/Vdc
PSS N None
Autotracking 2 Internal/external autotracking
Terminals S Spring type
Synchronizer N None
1st Communication Protocol 1 100Base-T Ethernet
2nd Communication Protocol N None

Technical Specifications

Parameter Specification
Manufacturer Basler Electric
Model DECS-250-LN2SN1N
Product Type Digital Excitation Control System
Power Supply Voltage (Style L) 16 to 60 Vdc / 24/48 Vac/Vdc
Power Supply Burden 50 VA or 30 W
Full Load Continuous Output Current 15 Adc
10-Second Forcing Output Current 30 Adc
Power Input Frequency 50 to 500 Hz
Generator & Bus Voltage Sensing Ranges 100/120 Vac +/-10%, 200/240 Vac +/-10%, 400/480 Vac +/-10%, 600 Vac +/-10%
Generator Current Sensing Rating 1 Aac or 5 Aac nominal, 50/60 Hz nominal
Contact Inputs 16 programmable inputs (dry contacts)
Contact Outputs 11 programmable form A contacts, 1 form C contact (watchdog function); rating 7 A resistive @ 24/48/125 Vdc / 120/240 Vac
Auxiliary Input 4 to 20 mA or +/-10 Vdc input
Communication Ports USB type B, RS-232 (9-pin sub D), RS-485 (Modbus RTU), CAN bus, Expansion Port, 100Base-T Ethernet (Modbus TCP)
Terminal Connection Type Spring type
Operating Temperature -40 degC to 70 degC (-40 degF to 158 degF)
Storage Temperature -40 degC to 85 degC (-40 degF to 185 degF)
Shock Resistance 15 G in three perpendicular planes
Vibration Resistance 5 G from 18 to 2000 Hz in three perpendicular planes
Weight 14.6 lb (6.62 kg)
Dimensions 8.62 in x 12.00 in x 6.26 in (219.0 mm x 304.8 mm x 159.0 mm) (D x H x W)

Installation Guidelines

  • Mounting: Ensure proper panel mounting with adequate clearance around the enclosure to facilitate airflow and heat dissipation.
  • Terminal Wiring: Wire dry contact inputs, output contacts, sensing inputs, and power leads to the spring-type terminal connectors in accordance with system schematics.
  • Shielding & Grounding: Use shielded twisted-pair cabling for analog inputs, auxiliary signals, and communication lines to mitigate EMI/RFI noise.
  • Communication Connections: Connect Ethernet cables to the 100Base-T port for network communication or unit-to-unit load sharing.

Compliance and Certifications

  • CSA certified
  • UL recognized
  • CE EMC and LVD compliant
  • EAC certified
  • Bureau Veritas (BV) recognized
  • Det Norske Veritas-Germanischer Lloyd (DNV GL) recognized
  • American Bureau of Shipping (ABS) recognized

FAQ

What power supply voltage does this specific excitation control system support?

This model is equipped with Style L power supply options, operating on a nominal 24/48 Vac/Vdc range (16 to 60 Vdc).

What type of wiring terminals are equipped on this unit?

This unit is configured with spring-type terminal blocks for field wiring connections.

What primary network interface is integrated into this controller?

The system features a 100Base-T Ethernet port supporting Modbus TCP protocol and unit-to-unit communication.

View all FAQs →

Product Documentation

Technical Datasheet (PDF) Complete specifications and technical drawings.

Technical Datasheet

Basler Electric DECS-250-LN2SN1N Digital Excitation Control System

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Returns & Warranty

  • 30-Day Guarantee: Returns accepted for in-stock products in original, factory-sealed packaging.
  • 12-Month Warranty: Every industrial component is backed by our technical warranty.
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Global Express Shipping

  • Standard Delivery: 4-6 Business Days via DHL, FedEx, and UPS.
  • Express Dispatch: Same-day dispatch for in-stock orders placed before 2:00 PM (GMT+8).
  • Worldwide Coverage: Serving over 150 countries, including rapid delivery to Saudi Arabia and UAE.

Returns & Warranty

  • 30-Day Guarantee: Returns accepted for in-stock products in original, factory-sealed packaging.
  • 12-Month Warranty: Every industrial component is backed by our professional technical warranty.

Orders are processed and delivered Monday-Friday (excluding public holidays).


For full eligibility, restocking fees, and international return details, please view our official Refund & Return Policy .

TECHNICAL SPECIFICATIONS

Country of origin
United States

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