AES Excitation System is a cost-effective, flexible, and efficient alternative to commercially available excitation systems. Backed by the L&S Electric quality reputation and a team of experts with over 175 years of combined engineering experience in excitation systems and control.

Benefits

• There are two control options to choose from:

- LS-EXE for AVR or full static controller

- LS-ECO cost effective AVR controller

• Implementation of practical designs, control algorithms, and effective technologies developed by credible experts in the field of excitation

• Built with powerful open architecture industrial controllers, OITs and IEDs

• Each system is fully tested and simulated at L&S Electric’s in-house test lab prior to shipment

• Has undergone third party performance testing for excitation systems

• Commissioning and service after the sale provided by L&S Electric’s engineering and field service experts 24/7

• Backed by a 2-year standard warranty

• Designed to meet IEEE 421 and other related industry standards.

L&S Electric, Inc. is a world wide leading supplier of integrated solutions for the Power Generation Industry. We serve clients throughout the United States, Canada, Asia, Europe, Central and South America.

L&S Electric Inc.Engineering Division

Main Office1810 County Road XXRothschild, WI 54474877.258.5128

Product Support located in:• Quebec, CA

• British Columbia, CA

• North Dakota

• Minnesota

• Iowa

• Wisconsin

• Texas

• Michigan

Value Added Resellers (VAR) located in:• Argentina

• Colombia

• Costa Rica

• Guatemala

• Ecuador

• Peru

• Chile

• Singapore

LS-ECO LS-EXC

Field Current or Field Voltage Regulation (Manual) Control Mode

Yes Yes

VAR or Power Factor Control Mode Yes Yes

Rotating Exciter Diode Monitoring Yes Yes

Realtime Trending @ 1 sec Sample Rate and 7 day History with 15” Operator Interface

Yes Yes

Realtime Data Recording for Tuning and Commissioning

Yes Yes

Transient Data Recorder 4-32 msec Sample Rate with Adjustable Pre-Trigger

Yes Yes

Oscillography Data Recorder 0.5 msec Sample Rate with Adjustable Pre-Trigger

Yes Yes

Sequence of Events with time stamping to 1 msec

Yes Yes

Event Logging (historical / active alarms) Yes, using OIT Yes, using OIT

Extensive Alarm and Trip Monitoring Yes Yes

L&S Electric’s Advanced Commissioning Tool (LS-ACT) for System Tuning, Configuration and Setup

Yes Yes

Serial Port - Modbus RTU for local OIT Yes Yes

Ethernet - Modbus TCP/IP for Remote Communications

Yes Yes

Ethernet IP No Optional

Ethernet - DNP3 No Optional

IEC-60870-5-101 or 104 No Optional

IEC-61850 No Optional

IRIG-B Time Synchronization Yes Yes

NTP Time Synchronization for OIT and Processor Timing, only

Yes Yes

Reactive Load Sharing Via Communications

No Yes

Soft Start Voltage Build-up Yes Yes

User Configurable Logic, using Controller Programming Software

Yes Yes

Voltage Control Mode (Auto) Yes Yes

PTP Time Synchronization No Optional

Power System Stabilizer Optional (2B) Optional(2B & 4B)

LS-ECO LS-EXC

IEC-61131-3 Programming Yes Yes

<0.20% voltage sensing of rated full-scale DC output

Yes Yes

Field Excitation Rotating (brush or brushless)

Rotating (brush or brushless) or

Static

Unit Over Voltage Protection (59) Yes Yes

Field Over Current Protection (51E) Yes Yes

Field Over Voltage Protection (59E) Yes Yes

Loss of Voltage Sensing Protection (60LOP)

Yes Yes

Loss of Field Protection (40) Yes Yes

Volts/Hertz Protection (24) Yes Yes

Field Over Temperature Protection (26E) No Yes

Exciter Power Transformer Over Temperature Protection (26EPT)

No Yes, Discrete or Analog input

Thyristor Bridge Temperature Monitoring for Protection (using temp sws)

No Yes

Field Flashing Failure Protection (48FF) Yes Yes

Watchdog Yes Yes

Volt/Hertz Limiter (VHL) Yes Yes

Over Excitation Limiter (OEL) Yes Yes

Under Excitation Limiter (UEL) Yes Yes

Stator Current Limiter (SCL) Yes Yes

Terminal Voltage Limiter (TVL) Yes Yes

Instantaneous Field Current Limiter (INS) Yes Yes

Reactive Current Compensator (Line Droop / Drop)

Yes Yes

Cross Current Compensation (CCC) Yes Yes

Step Response Utility for PID Validation Yes Yes

PID Control with Dual Settings Yes Yes

Local & Remote Control Yes Yes

Auto & Manual Channels Yes Yes

Internal Auto / Manual Tracking Yes Yes

Redundant Channel Tracking No Standard on LS-EXC Redundant

Models

LS-AES Excitation Controller Models: LS-ECO and LS-EXC• True RMS Voltage and Current Sensing

• Cross Current Compensation Available with Single Phase Sensing

• Voltage matching on all controller options

• DC Field Current/Voltage sensing.

• All control and monitoring are done from the standard operator interface (based on LS-AES-* model offering)

• Setup, Configuration, Tuning and Data Recording done from LS-ACT, L&S Electric’s object oriented Advanced Commissioning Tool

• 40o C Ambient Nominal Design

• Designed to Meet or Exceed ANSI-C50-13 Overload Requirements

• For custom solutions please contact: engsales@lselectric.com or 877-258-5128

LS-ECO LS-EXC

DI - Discrete Inputs 16 32

DO - Discrete Outputs 16 16

AI -AnalogInput

Unit Voltage Sensing 3 3

Bus Voltage Sensing 1 1

Unit Current Sensing 3 3

Field Current andVoltage Sensing

2 2

+/- 10 VDC 2 2

4-20 mA 0 4

AO -Analog Output

Firing Control 1 1

4-20mA 4 8

IRIG-B for time synchronization 1 1

Systems

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(LS

-PW

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20

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, 24

0V

AC

(LS

-DT-L

30

)

50

A, 4

80

VA

C (LS

-DT-X

50

)

20

0A

, 48

0V

AC

(LS

-DT-X

20

0)

40

0A

, 48

0V

AC

(LS

-DT-X

40

0)

80

0A

, 60

0V

AC

(LS

-DT-X

40

0)

150

0A

, 80

0V

AC

(LS

-DT-X

150

0)

25

00

A, 8

00

VA

C (LS

-DT-X

25

00

)

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PS

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PS

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LS-AES-VR-ECOAutomatic Voltage Regulator

X X Optional X X X X X Optional Optional Optional Optional Optional Optional2 Optional Optional

LS-AES-VR-EXCAutomatic Voltage Regulator

X Optional Optional X Optional X X X X Optional Optional Optional Optional Optional Optional Optional Optional

LS-AES-FS-EXC-DTFull Static Excitation System

X Optional Optional X X X X X X X X X X Optional X1 Optional Optional Optional Optional Optional

Power Sections

PW

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Pro

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LS-PW-L30, 20A / 30A X X X

LS-DT-L30, 20A / 30A X X X

LS-DT-X50, 50A X X X X

LS-DT-X200, 200A X X X X Optional Optional

LS-DT-X400, 400A X X X X Optional

LS-DT-X800, 800A X X X X Optional

LS-DT-X1500, 1500 A X X X X Optional

LS-DT-X2500, 2500A X X X X Optional1 Only if EPT is Required2Requires SEL 700G Relay