Trying to read up on transferred voltage hazards and cannot seem to understand what the correct solution on this issue. This is similar to thread238-413458. Without using expensive software is there a way to know how to solve the issue.
Typical scenario is an industrial application with the...
I'm curious to understand how others have determined the ampacity for sizing feeder cables to a 48Vdc control circuit of a 138kV HV circuit breaker. I have the information for the loads in the control circuit in which largest loads are the 2-trip coils and 1-open coil. All other loads (trip coil...
Hi,
This is a basic question I guess but would greatly appreciate anyone's input. I have an existing DC power supply feeding the existing control system PLC and the loop powered instruments in the field. The PLC requires a change and will now have a higher DC voltage as power supply. Assuming...
I am trying to solve line currents for a delta delta transformer using nodal analysis but couldn't arrive with the correct answer. The simple way I have done this before is to distribute kVA loads to individual phases then divide by the Voltage / Sqrt 3. Say we 3kVA load on phase AB, 4kVA on BC...
