Category: Industry Trends

The SR4A Retrofit Voltage Regulator is an economical, direct replacement

for existing Basler Electric SR4A voltage regulators. Designed for brush

and brushless synchronous generators, it delivers accurate voltage

regulation, dependable excitation control, and fast response times while

fitting within the same mounting footprint as the original regulator. 

The retrofit package incorporates a modern AVC63-12 voltage regulator

and, where required, an internal sensing module, making installation

quick and straightforward.

Engineered for reliable operation in demanding power generation

environments, the SR4A Retrofit supports single- or three-phase sensing,

reactive droop compensation, line drop compensation, underfrequency

protection, and integration with power factor controllers, excitation limiters,

and auto synchronizers. Its rugged construction, ease of installation, and

compatibility with existing generator systems make it an ideal solution for

extending equipment life and improving voltage regulation performance.

The SR and SSR Retrofit Voltage Regulators are designed as economical,

direct replacement solutions for legacy Basler SR and SSR voltage regulators.

Engineered for quick installation, these retrofit kits fit into the existing

mounting space and utilize terminal-to-terminal wiring to simplify field

replacement. Integrated CT input burden matching supports paralleling

systems with cross-current compensation, while accessory inputs provide

compatibility with var/power factor controllers and excitation limiters.

The SR and SSR Retrofit series delivers the same dependable performance

as the original regulators while helping extend the life and reliability of

generator excitation systems.

The SR9A Retrofit Voltage Regulator is an economical, direct replacement

for existing Basler Electric SR9A voltage regulators.

Designed for synchronous generators operating in 400 Hz applications,

it provides accurate voltage regulation, fast response times, and dependable

excitation control while utilizing the same mounting footprint as the original

regulator. The retrofit solution incorporates a modern AVC125-10 voltage

regulator and, where required, an internal sensing module to streamline

installation and reduce maintenance requirements.

Built for demanding power generation environments, the SR9A Retrofit

supports single- or three-phase sensing, reactive droop compensation,

line drop compensation, underfrequency protection, and integration with

accessories such as power factor controllers, excitation limiters, and auto

synchronizers. Its rugged construction, reliable performance, and

straightforward upgrade path make it an ideal solution for extending the

life and functionality of existing generator systems.

The SR and SSR Retrofit Voltage Regulators are designed as economical,

direct replacement solutions for legacy Basler SR and SSR voltage regulators.

Engineered for quick installation, these retrofit kits fit into the existing

mounting space and utilize terminal-to-terminal wiring to simplify field

replacement. Integrated CT input burden matching supports paralleling

systems with cross-current compensation, while accessory inputs provide

compatibility with var/power factor controllers and excitation limiters.

The SR and SSR Retrofit series delivers the same dependable performance

as the original regulators while helping extend the life and reliability of

generator excitation systems.

The SR8A Retrofit Voltage Regulator is an economical, direct replacement

for existing Basler Electric SR8A voltage regulators. Designed for brush

and brushless synchronous generators, it delivers precise voltage regulation,

fast response times, and dependable excitation control while fitting within

the same mounting footprint as the original SR regulator.

The retrofit package incorporates a modern AVC125-10 voltage regulator and,

where required, an internal sensing module, simplifying installation and

minimizing downtime.

Engineered for reliability in demanding power generation applications, the

SR8A Retrofit supports single- or three-phase sensing, voltage matching,

reactive droop compensation, line drop compensation, and underfrequency

protection. Its rugged design withstands harsh industrial environments,

while compatibility with accessories such as excitation limiters, power factor

controllers, and auto synchronizers makes it a versatile solution for generator

upgrades and modernization projects.

The SR and SSR Retrofit Voltage Regulators are designed as economical,

direct replacement solutions for legacy Basler SR and SSR voltage regulators.

Engineered for quick installation, these retrofit kits fit into the existing

mounting space and utilize terminal-to-terminal wiring to simplify field

replacement. Integrated CT input burden matching supports paralleling

systems with cross-current compensation, while accessory inputs provide

compatibility with var/power factor controllers and excitation limiters.

The SR and SSR Retrofit series delivers the same dependable performance

as the original regulators while helping extend the life and reliability of

generator excitation systems.

The SR6A Retrofit Voltage Regulator is an economical, direct replacement

for existing Basler Electric SR6A voltage regulators used in 400 Hz

generator applications. Designed to fit within the same mounting footprint

as the original regulator, it provides accurate voltage regulation, fast

response times, and dependable excitation control for brush and brushless

synchronous generators. The retrofit package incorporates a modern AVC63

-12 voltage regulator and, when required, an internal sensing module, making

upgrades straightforward and cost-effective.

Built for reliable performance in demanding power generation environments,

the SR6A Retrofit supports single- or three-phase sensing, reactive droop

compensation, line drop compensation, underfrequency protection, and

accessory integration. Its rugged construction, compatibility with existing

systems, and easy installation make it an ideal solution for extending the

service life of legacy generator voltage regulation systems while improving 

performance and maintainability.

The SR and SSR Retrofit Voltage Regulators are designed as economical,

direct replacement solutions for legacy Basler SR and SSR voltage regulators.

Engineered for quick installation, these retrofit kits fit into the existing

mounting space and utilize terminal-to-terminal wiring to simplify field

replacement. Integrated CT input burden matching supports paralleling

systems with cross-current compensation, while accessory inputs provide

compatibility with var/power factor controllers and excitation limiters.

The SR and SSR Retrofit series delivers the same dependable performance

as the original regulators while helping extend the life and reliability of

generator excitation systems.

The SSR63-12 Retrofit Voltage Regulator is an economical, direct

replacement for existing Basler Electric SSR63-12 voltage regulators

used with brushless synchronous generators. Designed to fit within

the same mounting footprint as the original regulator, the retrofit

solution incorporates a modern AVC63-12 voltage regulator and,

when required, an internal sensing module.

It delivers precise voltage regulation, dependable excitation control,

and fast response times while minimizing installation time and upgrade

costs. Engineered for demanding generator applications, the SSR63-12

Retrofit supports single- or three-phase sensing, reactive droop

compensation, cross-current compensation, line drop compensation,

and underfrequency protection.

Compatibility with accessories such as excitation limiters, power factor

controllers, auto synchronizers, and excitation support systems makes

it an ideal modernization  solution for existing generator systems.

Its rugged construction, direct-replacement design, and proven

performance help extend equipment life while improving regulation

accuracy and reliability.

The SR and SSR Retrofit Voltage Regulators are designed as economical,

direct replacement solutions for legacy Basler SR and SSR voltage regulators.

Engineered for quick installation, these retrofit kits fit into the existing

mounting space and utilize terminal-to-terminal wiring to simplify field

replacement. Integrated CT input burden matching supports paralleling

systems with cross-current compensation, while accessory inputs provide

compatibility with var/power factor controllers and excitation limiters.

The SR and SSR Retrofit series delivers the same dependable performance

as the original regulators while helping extend the life and reliability of

generator excitation systems.

— Product Features & Benefits

• Installation into the same space previously occupied by a Basler Electric SR

or SSR regulator without additional mounting holes and/or hardware.

• Terminal-to-terminal wiring allows quick field replacement of the original

voltage regulator.

• Integrated CT input burden matching provides compatibility with paralleling

systems utilizing cross-current compensation.

• An accessory input provides compatibility with devices such as var/power

factor controllers or excitation limiters.

• Same reliable operation as the original SR/SSR being replaced.

• Standard retrofit kits easily replace multiple models, including custom models,

of the Basler SR and SSR voltage regulators.

The SR and SSR Retrofit Voltage Regulators are designed as economical,

direct replacement solutions for legacy Basler SR and SSR voltage regulators.

Engineered for quick installation, these retrofit kits fit into the existing

mounting space and utilize terminal-to-terminal wiring to simplify field

replacement. Integrated CT input burden matching supports paralleling

systems with cross-current compensation, while accessory inputs provide

compatibility with var/power factor controllers and excitation limiters.

The SR and SSR Retrofit series delivers the same dependable performance

as the original regulators while helping extend the life and reliability of

generator excitation systems.

Features

• Precise excitation control for synchronous generator or synchronous

motor applications.

• True RMS sensing, single-phase or three-phase voltage and current

• Full generator metering capabilities

• Auto tuning feature with two PID stability groups

• Reactive load sharing over communication

• AVR, FCR, FVR, power factor and var modes of operation

• Integrated generator protection 25. 27. 32R, 40Q, 51F, 59. 59F, 81O/U,

EDM, Loss of PMG, and field short circuit

• Optional integrated power system stabilizer (PSS), IEEE Std. 421.5 type

PSS2A/2B/2C

• Configurable protection

• Conformal coating is applied to certain internal circuitry for additional

protection and reliability

• Overexcitation limiting (with temperature compensation)

• Underexcitation limiting

• Stator current limiting (with temperature compensation)

• Var limiting

• Underfrequency limiting or V/Hz limiting

• Exciter diode monitoring

• Trending, oscillography, and sequence of events recording

• Fourteen programmable contact inputs

• Eleven programmable contact outputs

• Rated for up to 420 Hz on the power input with derating capability

(Contact Basler Electric for more information)

• I/O Expansion module compatibility:

-AEM-2020 Analog Expansion Module

-CEM-2020 Contact Expansion Module

FGD-2 Connections

Connectors with screw-down compression terminals are used for all FGD-2

connections. The connectors, and the headers that they plug into, have a

dovetailed edge that ensures proper connector orientation. Similar-sized

connectors and headers are uniquely keyed to ensure that a connector

mates only with the correct header to prevent damage to the FGD-2.

However, care must still be taken to ensure that the proper connector is

inserted into the appropriate header. Connector screw terminals accept a

maximum wire size of 8 AWG. The maximum screw torque is 7.1 in-lb or

0.8 N•m. Figure 2 illustrates typical FGD-2 connections.

The FGD-2 was designed to be connected between F+ and ground, but

it is also compatible with applications where only F– is available.

Figure 3 illustrates this alternate connection option.

Overview

The DECS-250N digital excitation control system offers high performance, high

flexibility, and extreme reliability for brushless excited AC synchronous generators.

The DECS-250N utilizes a 20-amp six-thyristor negative forcing output, providing

exceptional system transient response. Multiple communication options and an

optional integrated power system stabilizer make the DECS-250N a complete system

solution in a reliable and cost effective package.

Benefits

• The Offline Simulator, provided in BESTlogic™Plus, helps test and

troubleshoot logic without the need for expensive hardware.

• Reduce setup time with Basler’s intuitive BESTCOMSPlus®

software that simplifies complex setup with simple drag-and-drop

programmable logic, visual real-time strip chart capabilities, and

cutting edge auto PID selection capabilities.

• The revolutionary auto tuning function automatically establishes

optimum PID and gain settings, taking the guesswork out of

system setup, reducing commissioning time and cost while

maximizing overall system performance.

• A powerful 20-amp rectifier bridge provides high positive and

negative field forcing for exceptional system response. The

negative field-forcing capabilities make it well suited to be paired

with the optional Power System Stabilizer.

• Grid code settings provide compatibility with grid code compliant

systems.

• Easy user-configurable settings for synchronous motor or

generator modes of operation.