The Romanian glass Insulators are from glass, their colors are all variations the green, from the clear till the olive blackglass include some light blue and the rare amber. The standard writes about the clear and green variations.
Two base types exist, the SO for the steel pins and the SL for the wood pins. The SL1 and SL2, mostly the SL2 were used for the lines, the SO1 and SO2 were used for the carrier frequecy circuits on the top crossarm or transposition. Sometime I found SO1s on woon pins.. Only the Railways used the SO3s
Maximum 3 bubbles are allowed per SL1, SL2 and SO1 Insulator if they can't break by a nail, and they are smaller than 5 mm. In the SO2 and SO3 the bubbles must be smaller than 3 mm.
Small bubbles are alloved if they are not in big team.
Junks are not alloved in the Insulator
The mold lines are alloved under 0,4 mm width
| Type |
Resistance (MegaOhm) |
Breaking Force (Newton) |
| SL1 |
20,000 MOhm |
2,950 N |
| SL2 |
30,000 MOhm |
4,900 N |
| SO1 |
20,000 MOhm |
3,925 N |
| SO2 |
35,000 MOhm |
3,925 N |
| SO3 |
40.000 MOhm |
4,900 N |
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