Porcelain cross-arm insulator
| Model | SC-185 | SC-210 | S-10/2.5 | S1-10/2.5 | S-10/5.0 | S-35/5.0 | S2-35/5.0 |
| Drawing number | 1 | 1 | 2 | 2 | 2 | 3 | 3 |
| Main dimensions（m） | H | 400 | 450 | -- | -- | -- | -- | -- |
| D | 75 | 82 | 75 | 82 | 110 | 115 | 135 |
| L | 340 | 390 | 390 | 440 | 400 | 580 | 620 |
| L1 | 315 | 365 | 315 | 365 | 320 | 490 | 520 |
| L2 | 22 | 22 | 22 | 22 | 28 | 28 | 28 |
| R | 11 | 11 | 11 | 11 | 14 | 14 | 14 |
| d1 | 18 | 18 | 18 | 18 | 18 | 22 | 22 |
| d2 | -- | -- | 6.5 | 6.5 | 11 | 11 | 11 |
| h | -- | -- | 14 | 14 | 140 | 140 | 140 |
| a | 68 | 72 | 40 | 40(30) | 40(30) | 40(35) | 40(35) |
| Creepage distance（mm） | 320 | 380 | 320 | 380 | 360 | 700 | 1120 |
| Lightning shock resistance voltage（KV） | 165 | 185 | 165 | 185 | 165 | 250 | 265 |
| Industrial frequency wet tolerance voltage（KV） | 45 | 50 | 45 | 50 | 45 | 85 | 100 |
| Mechanical bend destructive load（KN） | 2.5 | 2.5 | 2.5 | 2.5 | 5 | 5 | 5 |
| Reference weight（kg） | 4 | 4.6 | 5.2 | 5.8 | -- | 12.5 | 22.2 |
| Corresponding old model | -- | -- | S-185 | S-210 | -- | S-280 | S-380 |
