Basler Electric DECS-250-LN1SA1N Digital Excitation Control System

SKU DECS-250-LN1SA1N

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Manufacturer: Basler Electric
Product No.: DECS-250-LN1SA1N
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 (H x W x D)
Shipping port: Xiamen
Warranty: 12 months

Description

The Basler Electric DECS-250-LN1SA1N is a complete digital excitation control system designed for precise voltage, var, and power factor regulation in synchronous generator and synchronous motor applications. This unit features True RMS sensing for single-phase or three-phase voltage and current inputs, alongside integrated generator protection functions (27/59, 81O/U, 32R, 40Q, EDM, 59F, 51F, Loss of PMG, Field Short Circuit, and 25 Sync Check). The DECS-250-LN1SA1N configuration provides automatic voltage regulation (AVR), field current regulation (FCR), field voltage regulation (FVR), and load sharing capabilities over Ethernet.

Features

True RMS single-phase or three-phase voltage and current sensing with generator metering
Multiple operating modes including AVR, FCR, FVR, Power Factor, and var regulation
Integrated generator protection functions (27/59, 81O/U, 32R, 40Q, EDM, 59F, 51F, Loss of PMG, Field Short Circuit, 25 Sync Check)
Pulse-width-modulated (PWM) power stage adaptable to shunt, auxiliary winding, permanent magnet, or DC-fed systems
Auto-tuning capability with two PID stability groups
Conformal coating applied to select internal circuitry for enhanced environmental protection
Sixteen programmable dry contact inputs and twelve programmable contact outputs
Compatible with AEM-2020 Analog Expansion Modules and CEM-2020 Contact Expansion Modules

Applications

Synchronous Generator Control
Synchronous Motor Excitation Control
Power Generation Plant Excitation and Protection

Ordering Information

Option / Parameter	Selection / Description
Model	DECS-250
Power Supply	L (24/48 Vac/Vdc)
Autotracking	N (None)
Communication Protocol 1	1 (100Base-T Ethernet)
Terminals	S (Spring type)
Synchronizer	A (Auto synchronizer)
Power System Stabilizer (PSS)	1 (Internal/External Autotracking)
Communication Protocol 2	N (None)

Technical Specifications

Parameter	Value
Manufacturer	Basler Electric
Full Load Continuous Current	20 Adc up to 55 degC (131 degF); 15 Adc up to 70 degC (158 degF)
10-Second Forcing Current	30 Adc
Power Supply Voltage (Style L)	24/48 Vac/Vdc
Power Input Frequency	50 to 500 Hz
Generator Sensing Inputs	1-phase or 3-phase, 100/120 Vac, 200/240 Vac, 400/480 Vac, 600 Vac (+/-10%)
Sensing Frequency	50/60 Hz nominal
Generator Current Sensing	1-phase or 3-phase (1 Aac or 5 Aac nominal)
Contact Inputs	16 programmable, dry contact
Contact Outputs	11 programmable Form A, 1 watchdog Form C (7 A resistive @ 24/48/125 Vdc, 120/240 Vac)
Auxiliary Inputs	1 (4 to 20 mAdc or -10 to +10 Vdc)
Communication Ports	USB Type B, RS-232, RS-485 (Modbus RTU), CAN Bus, 100Base-T Ethernet (Modbus TCP)
Operating Temperature	-40 degC to 55 degC (at 20 Adc); -40 degC to 70 degC (at 15 Adc)
Storage Temperature	-40 degC to 85 degC
Shock / Vibration	15 G in 3 perpendicular planes / 5 G from 18 to 2,000 Hz
Weight	14.6 lb (6.62 kg)
Dimensions (W x H x D)	6.26 x 12.00 x 8.62 inches (159.0 x 304.8 x 219.0 mm)

Connections/Interfaces

Communication Interface	Protocol / Function
USB	USB Type B
RS-232	9-pin sub-D for optional external autotracking
RS-485	Modbus RTU protocol
CAN Bus	One port for ECU communications, one port for expansion modules
Ethernet	100Base-T, Modbus TCP protocol for unit-to-unit communication

Installation Guidelines

Mount unit vertically using panel dimensions and weight specifications.
Ensure proper ventilation for continuous full load operation up to 70 degC.
Use spring type terminals for control and signal wiring as specified for Style S.
Follow wiring practices to mitigate EMI/RFI interference on communication ports and sensing inputs.

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 is the operating power supply voltage for this model configuration?

This configuration utilizes a 24/48 Vac/Vdc nominal power supply.

What communication interfaces are integrated into the control system?

The system includes USB Type B, RS-232, RS-485 with Modbus RTU, CAN Bus, and 100Base-T Ethernet with Modbus TCP.

What is the operating temperature range at 15 Adc continuous current?

The operating temperature range at 15 Adc continuous current is -40 degC to 70 degC.

Does the system feature integrated protection functions?

Yes, it includes protection functions such as 27/59, 81O/U, 32R, 40Q, EDM, 59F, 51F, Loss of PMG, Field Short Circuit, and 25 Sync Check.

View all FAQs →

Product Documentation

Technical Datasheet (PDF) Complete specifications and technical drawings.

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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).

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TECHNICAL SPECIFICATIONS

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