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Basler Solutions

Basler Solutions for Excitation Systems

Gas Turbine Systems
Steam, Hydro or Engine-Driven Generators
Rotating Exciter Systems
Unsupported Exciters and Regulators
Municipal Installation Upgrades

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Voltage Regulator and System Replacement Options

Manufacturer

Model

Voltage Regulator

Excitation System

Basler Application Note

General Electric

GFA "Starwheel"

DECS-200/200N Pan 3

DECS-400 or ECS2100

EX-GFA1

GDA "Diactor"

EX-DIAC1

Amplidyne

DECS-400 or ECS2100

EX-AMP1,
Features Flyer

Potential Bus Fed

EX-BUSFED

SCT/PPT

DECS-400 Pan 3

EX-SCT1,
Features Flyer, Technical Paper

Alterrex

DECS-400 or ECS2100

ECS2100

EX-ALT1 (regulator), Features Flyer,
EX-ALT_BRDG (bridges),
EX-ALT2 (drop-in bridges)

 

 

 

 

 

GE- Canada

Silco 4 and 5

 

DECS-400

EX-SILCO1

 

 

 

 

 

Westinghouse/ Cutler-Hammer

Silverstat

DECS-200/200N Pan 3

DECS-400 or ECS2100

EX-D200SILV1

TRA

EX-SILV1

mag-a-stat (WMA)

DECS-400

EX-MAG1,
Features Flyer

BJ-30

EX-BJ30-1

Mag-a-trinistat

EX-WTA1

MGR

 

WTA 300

EX-TRIN1,
Features Flyer

WTA 300B

Trinistat (WTA)

ECS2100

PRX-300, 302, 400

DECS-400 Pan 1

EX-GTURB1

WDR-2000

ECS/RW

DECS-400 or ECS2100

 

 

 

 

 

 

Allis Chalmers

Regulex

DECS-400

DECS-400 or ECS2100

 

Statex

 

 

 

 

 

 

 

BBC

AVR4

DECS-400

DECS-400 or ECS2100

Features Flyer

 

 

 

 

 

Beloit

Portec

 

DECS-400

EX-POR1, EX-POR2

 

 

 

 

 

Brush

MAVR

DECS-200/200N Pan 3

 

EX-D200P3,
EX-MAVR1

 

 

 

 

 

Electric Machinery

VR60 or VR40 Series

DECS-200/200N Pan 3

 

EX-D200VR

 

 

 

 

 

GM-EMD

Vickers

 

SSE

APNOTE 123

 

 

 

 

 

Siemens

Thyrisiem

DECS-400

 

 

 

 

 

 

 

Siemens Allis

Siemens

 

DECS-400 or ECS2100

EX-SIEM1,
Features Flyer

 

 

 

 

 

Basler

SRA

DECS-200

 

EX-D200SRA

SSE

DECS-400

DECS-400

EX-SSE1

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Gas Turbine Systems

Owners of gas turbine driven generators built in the 1960s and 1970s face the increasingly frustrating challenge of maintaining original equipment excitation systems that are rapidly approaching obsolescence. Parts and services are becoming harder to find, while the costs of generation downtime continue to increase.

Basler offers prepackaged replacement voltage regulator systems and other retrofit options for the Pratt and Whitney Single/Twin Pac, Westinghouse 191/251/501 and GE Frame 5.

Review the specifications of the ECS2100, DECS-400, DECS-300, DECS-200 and DECS-200N to choose the product that best fits your application.

Steam, Hydro or Engine-Driven Generators

As systems age, parts are more expensive and difficult to obtain, and it can be both expensive and technically challenging to find viable retrofit equipment options to maintain a voltage regulator/exciter system on older steam, hydro or engine-driven generators.

Basler offers replacement options for the systems listed above that makes it simple to upgrade voltage regulator/exciter systems, supplied in either a NEMA 1 enclosure or engineered and factory tested panels for installation in existing cubicles.

Review the specifications of the ECS2100, DECS-400, DECS-300, DECS-200 and DECS-200N to choose the product that best fits your application.

For more information on system upgrades and retrofits, see the technical paper "Xcel Energy Northern Region Experience with Excitation System Upgrades and Retrofits" from the EPRI Steam Turbine-Generator Workshop, August, 2005.
 

vintage rheostat
Replacement of older equipment, such as this wire-wound rheostat, can reduce operating costs and produce gains in system efficiency.

Rotating Exciter Systems

Increase reliability and flexibility while decreasing maintenance. See Application Note EX-RETRO for a summary of obsolete systems and the recommended replacement. Basler Electric can provide a static exciter regulator to replace difficult to maintain rotating exciters, including the systems listed above.

For applications that require negative field forcing, Basler offers the DECS-300 and DECS-400, that utilize separate independent appropriately sized bridges.

Basler’s newest Negative Forcing Digital Excitation System, the DECS-200N, has been developed for machines with rotating exciters that are brush or brushless, up to 30-40 MVA.

Gas Turbine
Facilities with gas turbines requiring power system stabilizers benefit from Negative Field Forcing Voltage Regulators.

We’ll provide you with 16 reasons to replace rotating exciters with digital static exciters, like the DECS-300 or DECS-400 or you can explore the “tuning” advantages offered by the DECS-200N in Application Note EX-D200N1.

For background, review the technical paper, Application of Static Excitation Systems for Rotating Exciter Replacement - It discusses the static exciter system, including the power control devices, power transformer and automatic voltage regulator.

Also, see how the Redundant DECS-200 pre-packaged retrofit solution is discussed in Application Note EX-D200P3 for use on small to medium size synchronous machines having either brush or brushless type rotating exciters. The Redundant DECS-200 offers the advantage of two digital controllers that communicate via parallel ports to maintain the generator output voltage via the field of the exciter.

For more information on system upgrades and retrofits, see the technical paper "Xcel Energy Northern Region Experience with Excitation System Upgrades and Retrofits" from the EPRI Steam Turbine-Generator Workshop, August, 2005.
 

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Return to Power Plant Operators page or view more solutions for - Bridge Replacement for Alterrex™ Rectifiers - Synchronous Motor Control and Protection - Rotating Exciter Diode Replacement - Power System Stabilizers - Protective Relays - Automatic Synchronizers -
Energy Storage Devices for Shunt Breaker Trip - Motor Operated Potentiometer Replacements

For more information, contact Technical Support or your local sales representative
 


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