Basler DECS-200-2L Digital Excitation Control System (AVR)

Product Description

The DECS-200-2L is a digital excitation controller (digital AVR) manufactured by Basler Electric. It adopts microprocessor control and PWM power stage, used to regulate terminal voltage, reactive power and power factor of synchronous generators by adjusting excitation current. It supports 32Vdc, 63Vdc and 125Vdc excitation output, with 15A continuous and 30A forcing for 10 seconds. It supports local HMI operation and PC configuration via BESTCOMS software, with built-in limiter, protection, oscillography and sequence of event recording functions.

Features

• Multi-mode regulation: voltage, field current, reactive power and power factor control
• Flexible excitation output: 32/63/125 VDC, 15A continuous, 30A forcing for 10s
• Integrated multiple limiters: overexcitation, underexcitation, V/Hz, stator current limit
• Built-in oscillography and event recording for fault analysis
• Three communication ports: dual RS232 and one additional communication interface
• Supports master/backup redundant excitation system configuration
• Front panel LCD and keypad for local parameter checking and adjustment
• Configuration and commissioning via Basler BESTCOMS software

Application Scenarios

• Land and marine synchronous generator excitation control
• Power plant generator sets, cogeneration and diesel generator systems
• Industrial self-contained power supply and islanded power grid projects
• Generator parallel operation and reactive power sharing control
• Retrofit and replacement of old analog excitation regulators

FAQ

Q: What is DECS-200-2L?
A: It is a digital excitation regulator (digital AVR) for synchronous generators from Basler.

Q: What software is used for configuration?
A: Basler BESTCOMS software for parameter setup, monitoring and fault recording download.

Q: Can it work in redundant master-slave mode?
A: Yes, it supports primary and backup redundant excitation system connection.

Q: What are common alarms?
A: V/Hz limit, over excitation, under excitation, loss of voltage sensing, field overcurrent alarm.