BASLER DECS-200-2L Product Overview

DECS-200-2L is a world-renowned professional company specializing in power generation control and protection,and one of the world’s largest independent suppliers of automatic excitation regulators and excitation systems.DECS-200-2L,as a high-performance product produced by it,is widely used in various occasions requiring precise voltage regulation and excitation control.

Main functional features

Precise voltage regulation

DECS-200-2L can adjust the RMS(root mean square)voltage of the generator to keep it within±0.25%accuracy from no load to full load.

This is due to Basler Electric’s many years of experience in manufacturing tens of thousands of digital voltage regulators,as well as the use of digital signal processing and precise regulation algorithms.

Stability control

DECS-200-2L adopts proportional(P),integral(I)and differential(D)stability control(PID control).

20 pre-programmed stability PID settings are provided,with standard stability settings for most applications and machines.

Allows the user to customize stability settings to fine tune stability to provide optimal generator transient performance.

Setup Software

Contains PID selection routines to help determine the correct PID settings.

Provides additional stability adjustments to customize stability and transient performance of the min/max excitation limiters and reactive/power factor controllers.

Underfrequency Limiter or V/Hz Ratio Limiter

The DECS-200-2L offers a choice of underfrequency limiter or V/Hz ratio limiter functionality.

The underfrequency limiter slope is adjustable from 0 to 3 times p.u.Volts/Hz in 0.1Hz increments.

The corner frequency roll-off point can be set from 45 to 65Hz in 0.1Hz increments.

This adjustability allows the DECS-200-2L to precisely match the operating characteristics of the prime mover and the load applied to the generator.

V/Hz Ratio Limiter

Clamps the regulation set point to prevent operation above V/Hz levels that exceed the V/Hz ratio specified by the DECS-200-2L.

This feature is also useful for other conditions that could damage the system,such as system voltage variations and frequency reduction situations.

Soft Start Voltage Buildup

Generator voltage overshoot can be harmful to the generator’s insulation system if not controlled.

The DECS-200-2L features a soft start feature with user adjustable settings to control the rate at which the generator voltage is allowed to build.

This reduces the amount of generator voltage overshoot from the rated operating voltage during startup of the generator system.

Parallel Compensation

The DECS-200-2L allows two or more generators to be paralleled using either reactive droop or reactive differential compensation with the addition of an external current transformer with 1 or 5Aac secondary current.

The current input rating is less than 1VA,which means that existing metering current transformers(CTs)can be used,eliminating the need for dedicated CTs.

Technical Specifications

The technical specifications of DECS-200-2L may include but are not limited to the following(specific specifications may vary depending on product version and configuration)

Rated input and output range

Accuracy and linear range

Isolation withstand voltage

Auxiliary power supply voltage

Operating temperature and temperature drift

Protection level and control mode

Communication interface and protocol

Application areas

DECS-200-2L is widely used in various power generation and power systems that require precise voltage regulation and excitation control,including but not limited to

Power plants and substations

Industrial automation and control systems

Ships and offshore platforms

Wind and solar power generation systems