| About |
|---|
| HFDB-4202 NT is a long-life, water-tree-retardant, unfilled, crosslinkable, low density polyethylene insulation compound. The permanent tree-retardant additive provides improved performance in power cables in service involving exposure to moisture while retaining the excellent physical, electrical, and processing attributes of conventional, crosslinkable polyethylene. HFDB-4202 NT Compound provides electric utilities with: State-of-the-art “water” tree-retardant technology. Proven in the field for over 25 years. Excellent electrical performance. Specifications HFDB-4202 NT tree-retardant compound is designed for use in power distribution cables and especially in underground applications (with and without moisture barriers), providing for improved performance over XLPE cables. Cables insulated with HFDB-4202 NT, using sound commercial fabrication 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 (TR-XLPE requirements) AEIC: CS8 RUS 50-70 (U-1) CEA: WCWG-01 & WCWG-02 IEC: 60502 CENELEC: HD 620 S1/A3, HD 629 S1 GB/T 12706 DL/T 1070&& |
| Product Description | |
|---|---|
| Supplier | DOW |
| Generic | LDPE |
| Material Status | Commercial: Active |
| Availabilitys | Africa & Middle East ,North America,Latin America,Asia Pacific |
| Technical Data | |||
|---|---|---|---|
| PHYSICAL | Nominal value | Unit | Test method |
| Density | 0.920 | g/cm³ | ASTM D792 |
| The degree of cross combination (Extractables) | < 20 | % | ASTM D2765A |
| 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 |
|---|---|---|---|
| Tensile strength retention rate | ASTM D638 | ||
| 14 days：150℃ | > 75 | % | ASTM D638 |
| 30 days：121℃ | > 75 | % | ASTM D638 |
| 30 days：136℃ | > 75 | % | ASTM D638 |
| Elongation retention rate | ASTM D638 | ||
| 14 days：150℃ | > 75 | % | ASTM D638 |
| 30 days：121℃ | > 75 | % | ASTM D638 |
| 30 days：136℃ | > 75 | % | ASTM D638 |
| THERMAL | Nominal value | Unit | Test method |
|---|---|---|---|
| High temperature creep | |||
| 200℃ | < 100 | % | ICEA T-28-562 |
| thermosetting | |||
| 200℃ | < 10 | % | ICEA T-28-562 |
| Electrical performance | Nominal value | Unit | Test method |
|---|---|---|---|
| Volume resistivity | |||
| 23℃ | > 1.0E+15 | ohms·cm | ASTM D257 |
| Dielectric strength | ASTM D149 | ||
| 3.18 mm | 26 | kV/mm | ASTM D149 |
| 3.18 mm | 23 | kV/mm | ASTM D149 |
| Dielectric constant | |||
| 60 Hz | 2.30 | ASTM D150 | |
| Dissipation factor | |||
| 60 Hz | 5.0E-4 | ASTM D150 | |
| Water-Tree Growth Rate | 10 | % | ASTM D6097 |
| Water-Tree Relative Size | 25 to 50 | % | ASTM D6097 |
| Process Conditions | |||
|---|---|---|---|
| Extrusion | Nominal value | Unit | Test method |
| Melt temperature | 116 to 141 | °C | |
| Notes |
|---|
| 1. Typical properties: these are not to be construed as specifications. |
| 2. Method A (Short-Time) |
| 3. Method B (Step-by-Step) |
| 4. Rate is relative to rate for Dow’s standard XLPE. FREQ = 1 kHz. |
| 5. Size is relative to size for Dow’s standard XLPE |
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