| About |
|---|
| Overview HFDK-9253 is a long-life, unfilled, crosslinkable, low sag, low density polyethylene insulation compound designed for distribution and transmission power cable insulation applications. HFDK-9253 has been designed for cable production processes on horizontal vulcanization lines and for cables with thick insulation manufactured on standard catenary vulcanization lines. HFDK-9253 has a low level of additive bloom for a long storage life, low dusting and an enhanced degree of scorch retardance for long production run lengths during cable manufacture. HFDK-9253 is recommended for the insulation of power distribution and transmission cables rated up to 69 kV Specifications HFDK-9253 is designed for use in power distribution and sub-transmission cables. Cables insulated with HFDK-9253, using sound commercial manufacturing practice, would be expected to meet the latest editions of the following specifications and regulations: ANSI/ICEA: S-94-649, S-97-682, S-93-639/NEMA WC74 AEIC CS8 UL 1072 CENELEC HD 620 S2 IEC 60502, 60840 GB/T 12706 BSI BS 6622, 7870-4&& |
| Product Description | |
|---|---|
| Supplier | DOW |
| Generic | LDPE |
| Material Status | Commercial: Active |
| Availabilitys | Africa & Middle East ,North America,Latin America,Asia Pacific,Europe |
| Technical Data | |||
|---|---|---|---|
| PHYSICAL | Nominal value | Unit | Test method |
| Density | 0.920 | g/cm³ | ASTM D792 |
| humidity | < 200 | ppm | Internal Method |
| MECHANICAL | Nominal value | Unit | Test method |
|---|---|---|---|
| tensile strength | 20.0 | MPa | ASTM D638 |
| Tensile strain | |||
| fracture | 500 | % | ASTM D638 |
| Aging performance | Nominal value | Unit | Test method |
|---|---|---|---|
| The rate of change in tensile strength | |||
| 150℃，168 hr | < 25 | % | ASTM D638 |
| THERMAL | Nominal value | Unit | Test method |
|---|---|---|---|
| thermosetting | IEC 60811-2-1 | ||
| Elongation under load: 200 ℃ | < 100 | % | IEC 60811-2-1 |
| Elongation without load: 200 ℃ | < 5.0 | % | IEC 60811-2-1 |
| Electrical performance | Nominal value | Unit | Test method |
|---|---|---|---|
| Volume resistivity | |||
| 23℃ | > 1.0E+16 | ohms·cm | ASTM D257 |
| Dielectric strength | ASTM D149 | ||
| 3.18 mm | > 30 | kV/mm | ASTM D149 |
| 3.18 mm | > 23 | kV/mm | ASTM D149 |
| 3.18 mm | > 39 | kV/mm | ASTM D149 |
| Dielectric constant | |||
| 23℃ | 2.30 | ASTM D150 | |
| Dissipation factor | |||
| 23℃ | < 3.0E-4 | ASTM D150 |
| Notes |
|---|
| 1. Typical properties: these are not to be construed as specifications. |
| 2. Method A (Short-Time) |
| 3. Method B (Step-by-Step) |
| 4. Method C (Slow Rate-of-Rise) |
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