IOSK · Polymer post insulators
ИОСК 5-35-420-2
Insulator ИОСК 5-35-420-2
- Series
- ИОСК
- Voltage class, kV
- 35
- Load class (bending), kN
- 5
- Atmospheric pollution degree
- 2
- Structural height, mm
- 420
Data require clarification
- The model designation specifies a rated mechanical failing load in bending of 5 kN, while the specification table on this catalog page gives 4,0 kN. The table value is kept unchanged; the discrepancy has not been corrected. · page 57
The values below are given exactly as in the catalog. Please confirm them with the manufacturer before ordering.
Technical specifications9 parameters
| Parameter | Value |
|---|---|
| Nominal voltage, kV | 35 |
| Mechanical failing load in bending, not less than, kN | 4,0 |
| Creepage distance, not less than, mm | 950 |
| Structural height H, mm | 420 |
| Insulating length L, mm | 330 |
| Power-frequency withstand voltage for 1 minute, dry/wet, not less than, kV | 95/80 |
| Lightning impulse withstand voltage, “1.2/50”, not less than, kV | 190 |
| 50% power-frequency flashover voltage in wet and polluted condition, not less than, kVat pollution layer surface conductivity (10±1,0) мкСм | 42 |
| Mass, kg | 6,6 |
Parameter names are translated from the Ukrainian catalog; the verbatim catalog wording is preserved in the data. Values are given as in the catalog, without recalculation or rounding.
Data source
IOSK catalog 2024 (in Ukrainian)
Specifications — p. 57 · Catalog numbers — p. 58 · Drawings — p. 58
Catalog numbers
| Catalog number | Porcelain equivalent | Flanges |
|---|---|---|
| P.5.35.420.2/R.D140.4М12/0/R.D140.4М12 | ОНС 35-500 СТ-35 | upper: D Ø140 · d М12 lower: D Ø140 · d М12 |
Designation structure
- Series
- ИОСК
- Load class (bending), kN
- 5
- Voltage class, kV
- 35
- Structural height, mm
- 420
- Atmospheric pollution degree
- 2
Drawings
Page 58
IOSK catalog 2024 (in Ukrainian)
The drawings are in the PDF catalog on the page indicated. The source documents contain no separate image files.
Product document
ИОСК 5-35-420-2.pdf
PDF available in Ukrainian
Normative documents
ТУ У 31.6-31279430-007:2006 · СОУ МПЕ 40.1.51.302
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ИОСК 5-35-420-2
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