Type 245 cables are designed for heavier duty underground applications where increased mechanical robustness is required without sacrificing operational flexibility. This construction provides enhanced resistance to abrasion and impact compared to Type 241, while retaining the semiconductive elastomer screen for superior flexibility over metal-screened alternatives. Common failure modes in poorly selected Type 245 cables include excessive stiffness leading to handling damage, and insulation stress where flexibility is traded off incorrectly against mechanical protection.
Znergy designs Type 245 cables with carefully balanced mechanical reinforcement and insulation systems to maintain flex performance while delivering higher resistance to abrasion and impact. The three-pilot configuration supports extended control and monitoring functions in longwall and complex underground circuits.
USE WHEN: Heavier mobile equipment, repeated handling, intermittent reeling, elevated floor abrasion.
DO NOT USE WHEN: Continuous tight-radius reeling dominates and flexibility is paramount —use Type 241.
AS/NZS 1802
245.1 – 1.1/1.1 kV
245.3 – 3.3/3.3 kV
Fire retardant — self-extinguishing per AS/NZS 1802.
Flexible — designed for heavier mobile equipment and intermittent reeling. Open weave reinforcement under the HD-85-PCP sheath provides mechanical protection without restricting bending performance.
| Chemical exposure | Very good / Frequent |
| Mechanical impact | Heavy |
| Water exposure | Immersion / Temporary coverage |
| Solar radiation & Weather | Suitable for direct exposure |
| Ozone & ageing | Excellent — EPR/PCP resists cracking |
| Property | Specification |
|---|---|
| Voltage Range | 1.1/1.1 kV to 3.3/3.3 kV |
| Insulation system | EPR (R-EP-90) — Ethylene Propylene Rubber |
| Conductor material | Class 5 flexible tinned annealed copper |
| Screen type | Semiconductive elastomer — more flexible than metal screen |
| Voltage test (11 kV) | 10 kV AC for 5 minutes |
| Property | Specification |
|---|---|
| Flexibility | Flexible — heavier mobile equipment & intermittent reeling |
| Jacket material | HD-85-PCP (Polychloroprene) with open weave reinforcement |
| Mechanical impact | Heavy — enhanced abrasion and impact resistance |
| Min. bending radius | This is a simple text block.6× OD static | 8× OD dynamic / reeling |
| Screen stability | Semiconductive elastomer — resists migration under torsion |
Semiconductive screened power cores, with three earth cores and three extensible pilots.
Core: Metal: tinned copper, three core three earths plus three central pilots.
Conductor separator tape: 1.1/1.1 kV – polyester where necessary. 3.3 kV and above – semiconductive screen.
Insulation: EPR (R-EP-90) core with durably printed core numbers at intervals less than 300 mm, on black semiconductive insulation screen for phase identification.
Screen: Semiconductive elastomer screen.
Pilot: Three pilots, in the centre of the cable. Maximum DC resistance: 3 Ω/100m for all cables.
Earth: Three semiconductive elastomer covered flexible earths, located in the interstices.
Sheath: Open weave reinforcement, under heavy duty HD-85-PCP.
| Property | Specification |
|---|---|
| Maximum Operating Temperature | +90°C |
| Minimum Operating Temperature | -25°C |
| Short-Circuit Temperature | Up to +250°C |
| Emergency Rating | +130°C |