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The embedded poles of the VYG units totally enclose the vacuum interrupter, CT& PT and both upper and lower outgoing line terminals in epoxy resin in APG process, a very mature automatic pressure gelatinizing technology. This helps to reduce adjustment requirements, dimiish possible damage to the VI during assembly and protect connecting bolts against shock during operation. Also, discharge of the terminals can be prevented due to special conductive copper part. The embedded poles, in epoxy resin with unique materal, make features of aging resistance, low/high-temperature resistance. These features protect the VI of the VYG. VYG/R system against any harmful influences from the outer environment. No shock& damp, pollution, condensation, dirt or small animal can ever have a possibility to face the VI, whereas those are always the headaches for the second geration. These distinctive features also enable the embedded poles a greater operating reliability, and high adaptability to various environments.
Main Technical Data
| No. | Designation | Unit | Parameter |
| 1 | Rated Voltage | kV | 12/24 |
| 2 | Rated Current | A | 630,1250,2500,3150,4000 |
| 3 | Rated short circuit breaking current | kA | 20,25,31.5,40 |
| 4 | Rated short time withstand current | kA | 20,25,31.5,40 |
| 5 | Rated peak withstand current | kA | 50,63,80,100,125 |