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What is Traction Relay Functions and Troubleshooting about?

Q20 is the traction motor over voltage relay that energizes if traction motor voltage exceeds 865V, causing auto regression through Q51. Q30 is the no or low voltage relay that de-energizes if voltage drops below 265V, causing DJ to trip through Q44 and MTDJ. Q44 is the GR transmission relay that de-energizes if certain conditions occur, causing DJ to trip through MTDJ. Q45 is the DJ resetting relay that energizes when closing BLDJ and pressing BLRDJ, energizing Q44 and closing DJ. Q46 is the GR protection

Author

आनंद कुमार विश्वकर्मा

Language

EN