Basler Solutions for Excitation Systems

Unsupported Exciters and Regulators

After years of thermal aging, older excitation systems frequently develop cold solder joints on printed circuit boards, intermittent potentiometer misoperations, or other similar failures resulting in unwelcome and unexpected forced outages. The cost of replacing the OEM circuit boards, if they are available at all - can approach or even exceed the cost of replacing the entire excitation system. Basler can help you add a new digital AVR and retain the power SCR bridges, PPT, and AC or dc field breakers.

For a review of this option, read Selecting the Excitation System for the Additional Turbine Generator at the Port Wentworth Pulp Mill. This paper covers the process involved in evaluating whether or not to reuse the generator's original compound excitation system and if replaced, the type of excitation system that should be installed, Compound or Potential Bus Fed Type.

Municipal Installation Upgrades

Basler Electric offers retrofit solutions for the vintage voltage regulators found in municipal power plants.

Below are retrofit solution part numbers for some of the more popular voltage regulators operating today:

• For Basler SRA replacement  - P/N 9381900100 (For 125Vdc control voltage) P/N 9381900101 (For 24Vdc control voltage)
• For Electric Machinery  VR replacement - P/N 9384500100 (For 125Vdc control voltage); P/N 9384500101 (For 24Vdc control voltage)
• For Westinghouse SilverStat replacement  - P/N 9384400100 (For 125Vdc control voltage); P/N 9384400101 (For 24Vdc control voltage)