Mining & Tunnelling — Our Core Expertise

Designed for light to medium duty trailing applications where flexibility and flame retardance are critical. Type 209 cables are commonly used for portable and semi-mobile underground equipment where frequent movement occurs.......Read More

Semiconductive screened cable for general use to AS/NZS 1802. Type 241 cables are widely used for underground coal mining trailing and reeling applications requiring enhanced mechanical protection beyond light-duty constructions.......Read More

Type 275 is widely recognised as the most demanding trailing cable classification in Australian underground coal mining. It is specified for the heaviest mobile equipment operating in the most punishing environments — continuous flexing under load, sustained impact, crushing underfoot, and exposure to abrasive coal dust and mine water.Few cable manufacturers can produce a compliant Type 275. Fewer still can produce one that outlasts the equipment it powers."Competing 275 cables pulled from Australian mine sites are lasting months. Znergy Type 275 cables on the same equipment, in the same conditions, are lasting years. That is not a marginal improvement —it is a fundamentally different product."......Read More

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.......Read More

Type 2S cables are EPR insulated, composite screened, CPE sheathed underground mine cables designed for specialised applications where additional screening integrity, earthing continuity, or protection is required beyond standard Type 241 constructions. Available in individually screened (IS) and collectively screened (CS) configurations across multiple core counts and voltage ratings.Common failure modes arise when Type 2S constructions are substituted without understanding their specific screening system and application intent, or when core count and pilot configuration are incorrectly matched to the protection relay scheme.......Read More

Type 440 is a Class 2, composite screened, three-core trailing cable designed for open cut and surface mining where three pilot/control cores are required instead of a single central pilot. Three EPR-insulated power cores are laid up around a centre filler, with three elastomer-covered pilot conductors disposed into the outer interstices — the same positions occupied by earth conductors in related types. Rated 1.1/1.1 kV through 22/22 kV (U0/U), it is the three-pilot open-cut equivalent of the underground Type 240. The composite Cu-wire screen provides collective earth fault detection. Per AS/NZS 2802:2000, it is designated Class 2.......Read More

Type 450 is a Class 1, composite screened, three-core trailing cable — the highest-voltage open-cut trailing cable in AS/NZS 2802:2000, rated up to 33/33 kV. Its construction differs fundamentally from lower-voltage types: three individually composite-screened power cores are laid up around a plain elastomer centre filler (no cradle separator, no central pilot). The outer interstices hold two elastomer-covered earth conductors, one elastomer-covered pilot conductor, and six shaped elastomer fillers — giving Type 450 its characteristic cross-section.As a Class 1 cable, power core insulation is XR-EP-90 (high-grade EPR) and the outer sheath is XHD-85-PCP or XHD-90-CSP/CPE with mandatory internal polyethylene terephthalate yarn reinforcement. Each power core carries a composite screen (braid of tinned Cu wire interwoven with PET yarn) plus a semiconductive tape over the screen.......Read More

Type 409 is a Class 2, composite screened, three-core trailing cable designed for open cut and surface mining applications. It incorporates a central pilot core surrounded by three EPR-insulated power cores, three interstitial earth conductors, and a collective composite copper-wire screen, all enclosed in a heavy-duty PCP or CSP/CPE outer sheath.Rated 1.1/1.1 kV through 22/22 kV (U0/U), it is the open-cut surface equivalent of the underground Type 209, sharing the same constructional numbering convention per AS/NZS 2802:2000.......Read More

Type 441 is an individually screened, three-core trailing cable for open cut and surface mining. Unlike Types 409 and 440 which use a collective composite screen, each power core in Type 441 carries its own semiconductive elastomer insulation screen — enabling per-phase earth fault detection and suitable operation in high-resistance earthed systems.Type 441 exists in two distinct classes. The 1.1/1.1 kV variant (441.1) is Class 2, using R-EP-90 insulation. The 3.3–22 kV variants (441.3 to 441.22) are Class 1, requiring the higher-grade XR-EP-90 insulation and extra heavy-duty XHD sheathing — reflecting the more demanding dielectric and mechanical requirements at elevated voltages.......Read More

Type 451 is a Class 1, composite screened, three-core trailing cable for open cut and surface mining at 3.3–33 kV. It shares the same power core architecture as Type 450 — centre filler, three individually composite-screened XR-EP-90 insulated power cores, two interstitial earth conductors, and a reinforced XHD outer sheath — but differs in one key respect: the pilot conductor is reduced in cross-section compared to Type 450.The reduced pilot (75/0.40 mm or 99/0.40 mm depending on size) is sized to carry pilot protection and monitoring signals only, not the current capacity of the full-size pilot in Type 450. Where the outer interstices are not fully occupied by the three covered conductors, the outer sheath fills the remaining space directly — no separate shaped elastomer fillers are specified for Type 451 (unlike Type 450).Both earth conductors and the pilot conductor carry separate specifications in AS/NZS 2802:2000 Table 18, unlike Type 450 where a single combined entry covers all three interstitial positions.......Read More

Type 455 is a Class 1, semiconductive screened, three-core trailing cable for open cut and surface mining at 3.3–11 kV. It is the SC-only screened counterpart to Type 450/451 — sharing the same interstitial conductor arrangement (centre filler, 2 earth + 1 pilot in outer interstices) but using a semiconductive elastomer insulation screen only, with no composite copper braid screen on the power cores.This makes Type 455 a lighter, more flexible construction suited to applications where the higher mechanical robustness of a composite screen is not required, and where the voltage does not exceed 11/11 kV. The absence of composite screen also means Type 455 does not carry a semiconductive tape over screen layer — the insulation screen is the outermost protection on each power core before lay-up.As a Class 1 cable, insulation is XR-EP-90 and the outer sheath is XHD-85-PCP or XHD-90-CSP/CPE with mandatory PET yarn reinforcement. Per AS/NZS 2802:2000 Table 19, earth and pilot conductors share the same combined specification.......Read More