Voltage & Current Transformers on 11 kV equipment
Voltage & Current Transformers on 11 kV equipment
(OP)
Afternoon all,
Can anyone offer me advice or point me in the general direction of where I can obtain advice on the selection of voltage and/ or current transformers and how they are correctly fitted onto an 11kV generator. My specific concern is how to avoid corona discharges etc. Thank you
Can anyone offer me advice or point me in the general direction of where I can obtain advice on the selection of voltage and/ or current transformers and how they are correctly fitted onto an 11kV generator. My specific concern is how to avoid corona discharges etc. Thank you






RE: Voltage & Current Transformers on 11 kV equipment
The PTs are often in a separate enclosure that also houses the generator surge protection. This depends a lot on the size and type of generator.
RE: Voltage & Current Transformers on 11 kV equipment
The VT is usually mounted in the gen incomer CB panel, in the cable box section.
RE: Voltage & Current Transformers on 11 kV equipment
http://www.thomasregister.com
and type Transformers: Current under Product or Service, which will return 211 companies to approach to
Visit
http://www.thomasregister.com
and type Transformers: Potential under Product or Service, which will return 49 companies to approach to
For corona discharges, see Reference:
C. L. Wadhwa "Electrical Power Systems," John Wiley & Sons, 1991, Chapter 6 Corona
RE: Voltage & Current Transformers on 11 kV equipment
Manufacturers’ published catalog and application literature for instrument transformers is invaluable. GE and ABB are good sources, but more specialized firms the Durham and Ritz are worth review also.
RE: Voltage & Current Transformers on 11 kV equipment
The sets I've worked on have had ABB switch gear and the CT's are like big house bricks in series with the bus bar.
Try contacting you local ABB swichboard manufacturer.