| Customization: | Available |
|---|---|
| Application: | Underground |
| Voltage: | Low and Medium Voltage Cable |
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The 28kV Concentric Neutral Cable, Full Neutral, 100% Insulation Level (0.280") is a shielded medium-voltage power cable used in utility and industrial underground distribution. It features a stranded conductor (copper or aluminum), thermoset insulation (typically XLPE or EPR), a full-size concentric neutral of helically wound bare copper wires, and an optional protective outer jacket.
Voltage Rating: 28,000 volts (28kV)
Insulation Thickness: 0.280 inch (7.11 mm)
Insulation Rating: 100% - for solidly grounded systems
Neutral Configuration: Full-size concentric copper neutral wires
Conductor Temperature: 90°C normal, 130°C emergency, 250°C short circuit
Used for:
Underground primary distribution for utilities, substations, and switchgear
Pad-mounted transformer connections
Wind/solar farm power collection
Systems where full fault current capacity and complete shielding are required
Installed in ducts, conduits, cable trays, or direct burial
A full neutral is often required by utilities for return current path, system grounding, and transient overvoltage protection.
| Standard | Description |
|---|---|
| ICEA S-94-649 | MV cables with concentric neutral, 5-46kV |
| AEIC CS8 | AEIC medium-voltage cable specifications |
| UL 1072 | UL listing requirements for MV cables |
| IEEE 383 / 1202 | Flame test for jacketed cables |
| ICEA T-28-562 | Grounding and bonding of concentric neutrals |
| ASTM B3, B8, B33 | Copper/aluminum wire standards |
| RoHS / REACH | Environmental and hazardous materials compliance |
| Component | Details |
|---|---|
| Conductor | Stranded copper or aluminum, per ASTM B8/B3 |
| Conductor Shield | Extruded thermoset semi-conducting layer, bonded |
| Insulation | XLPE or EPR, rated 90°C |
| Insulation Thickness | 0.280″ (7.11 mm) - for 100% insulation level |
| Insulation Shield | Extruded semi-conductive thermoset layer over insulation |
| Concentric Neutral | Full-size bare copper wires (per phase conductor ampacity), helically applied |
| Optional Binder | Non-hygroscopic tape (where applicable) |
| Outer Jacket (optional) | PVC, PE, or LSZH, UV-resistant, flame-retardant |
| Identification | Printed/ink-jetted: size, voltage rating, type, manufacturer, standards |
| Property | Value |
|---|---|
| Voltage Rating | 28kV |
| Insulation Level | 100% - for solidly grounded systems |
| Insulation Thickness | 0.280 inch (7.11 mm) |
| Temperature Rating | 90°C (normal), 130°C (emergency), 250°C (short-circuit) |
| Neutral Type | Full concentric copper wires (equal to or > conductor cross-section) |
| Shielding Function | Full neutral provides ground fault return path and EM shielding |
| Flame Resistance | Meets IEEE 1202 or UL 1685 (with appropriate jacket) |
| Installation | Direct burial, conduit, duct, cable tray |
| Feature | Specification |
|---|---|
| Cable Type | 28kV MV Cable with Full Concentric Neutral |
| Conductor | Copper or aluminum |
| Insulation Material | XLPE or EPR |
| Insulation Thickness | 0.280″ (7.11 mm) |
| Insulation Level | 100% - for solidly grounded systems |
| Neutral Configuration | Full bare concentric copper wires |
| Jacket (Optional) | PVC / PE / LSZH |
| Standards | ICEA S-94-649, AEIC CS8, UL 1072, IEEE 1202 |
| Installation | Direct burial, duct, tray, or conduit |
100% insulation level assumes quick fault clearing and solid grounding.
Full concentric neutral is often mandated for utility-owned MV distribution.
In ungrounded or impedance-grounded systems, use 133% insulation (0.370″ approx.).
Available in triplex configurations for multi-phase installations.
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