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Ring shield

Ring shield

Ring shield

(OP)
Please help me with information regarding ring shields design for 550 kV BIL

RE: Ring shield

typically 115kV equipment is rated 550kV BIL and generally at this voltage ring shields are not required.

RE: Ring shield

The use of corona ring (ring shield) depends of the type of insulator, equipment, configuration, system voltage, weather conditions, contamination, and altitude among other factors. As Saltan posted above, for 550 kV BIL (115 kV nominal) normally corona ring is not required unless severe environment condition happens.
The purpose of corona ring is to reshape the electric field, thus, reducing electrical discharge (corona effect) on the component shielding the hardware and insulators, preventing discharge by lowering potential gradients, thereby reducing power loss and radio and TV interference.




Non-ceramic Insulators (NCI) normally start at 138kV (650 kV BIL). Pin and cap Insulators can vary starting normally at 230kV (900 kV BIL) or 345kV depending upon your engineering tolerances and insulators in the strings.

Surge arresters use corona ring for nominal voltage above 138 kV (~650 kV BIL). Bus and hardware may use grading rings for 345 kV (1050 kV BIL) and above.

RE: Ring shield

(OP)
What software is ELECTRO?

RE: Ring shield

Calin100- ELECTRO is a electric field simulation software used for design and analysis of HV electric equipment such as Insulators, bushings, arrester, transformers, shielding, connectors and hardware, etc.
If you would like additional details contact directly to info@integratedsoft.com

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