Class X CTs are normally used in conjunction with differential or high impedance protections. Is it okay if the same CT is used for other protections e.g. overcurrent, unbalanced load, impedance etc.?
Hi....
I have a transformer installed with an MR tap changer. The position of the tap changer is measured by resistance. I'd like to take the resistance measurement and convert to 4...20mA for input to the control system for display purpose. Any consideration I should have for selecting such a...
Sorry... I think I missed out the attachment. Here it is.http://files.engineering.com/getfile.aspx?folder=673d8f18-b8a8-41cb-aeda-5dffc6290a0a&file=img-422164013-0001.pdf
I have a 125VDC motor starter circuit having a diode across the series coil of the DC motor. I don't understand the reason for this diode. I though a flyback diode is normally across the motor itself? Attached a sketch of this circuit.
Appreciate if anyone could share their insight on this. Tq.
