Safe Bus motor transfer scheme
Safe Bus motor transfer scheme
(OP)
Please help me with your experience of which is the safest schemes for safe bus transfer among for critical load power plant:
residual voltage transfer, slow transfer, in- phase transfer, parallel transfer , fast transfer, etc...
Also tell me the didadvantage of fast transfer, our relay has the capability talk to each other over communication protocol.
residual voltage transfer, slow transfer, in- phase transfer, parallel transfer , fast transfer, etc...
Also tell me the didadvantage of fast transfer, our relay has the capability talk to each other over communication protocol.





RE: Safe Bus motor transfer scheme
Slow bus transfer calculates time for voltage to decay to 33% before reclosing (or some other means to prevent exceeding 133% voltage difference with incoming line)
Parallel transfer I assume means you parallel energized supplies (which are known in-phase). That seems ideal.
Residaul voltage transfer?
In-phase transfer?
What do those terms mean?
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RE: Safe Bus motor transfer scheme
Here's one to start with: ht
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RE: Safe Bus motor transfer scheme
Residual voltage method is generally safe, but it means all the motors basically shutdown and have to be re-started.
Fast bus transfer is a complex subject and will depend on the application, motor sizes involved, nature of the process, and many other variables.
In addition to the link Scotty posted, you may want to look here:
htt