About this document
EMD SD45 Locomotive Electrical Systems by Gabriela is a document available to read on EtoBox.
This section describes several devices and circuits used in EMD locomotives, including: 1) An overvoltage relay (OVR) that protects the rectifier assembly from high voltages over 1000V or 1200V by dropping the generator field and engine relay. 2) An excitation limit relay (ELR) that protects from excessive excitation stressing components, by dropping the engine run relay to reduce speed and voltage. 3) A sensor bypass panel that allows using the same sensor on different locomotive models by compensatin
- Author
- Gabriela
- Language
- EN