TYPE 2S

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.

Znergy applies Type 2S constructions selectively, ensuring the electrical design, screening system, core configuration, and mechanical properties are precisely matched to the intended duty, protection philosophy, and relay coordination requirements of the circuit.

USE WHEN: Specialised screening, earthing integrity, multi-core control, or individually screened power cores are required.

DO NOT USE WHEN: Simpler constructions adequately meet the duty and compliance requirements.

IS — Individually Screened Composite tinned copper wire & polyester yarn braid screen applied to each power core. Pilot core also screened when power cores are individually screened.

CS — Collectively Screened Single composite screen applied over the complete assembled core group. Used for specialised low-voltage multi-core applications.

Flame retardant per IEC 60332-1-2. HD-90-CPE sheath is UV resistant and oil resistant per IEC 60811-404. Ozone resistant per IEC 60811-403.

Machine cable duty — flexible EPR and Class 5 conductor allow regular repositioning. Not designed for continuous drum reeling. Min. bending radius: 6× cable OD.

The IS construction screens each power core individually with a composite tinned Cu wire and polyester yarn braid —enabling per-phase earth fault detection required by most AS/NZS 1802 protection relay schemes. The pilot core is also individually screened, maintaining relay signal integrity under adjacent power core interference.

The CS construction applies a single collective screen over the assembled group — providing general shielding and EMI control for multi-core monitoring circuits where per-phase screening continuity is not required by the protection scheme.

IS (1.1 kV): Per-phase earth fault monitoring; 2C, 3C, or 4C with or without pilot.

IS (3.3 kV): Screened 3C trailing or fixed duty — confirm OD against coupler bore (larger ti = larger cable).

CS (1.1 kV): SCADA, telemetry, interlock, signalling —2 to 30 cores, 1.5 mm2

EPR insulated, composite screened, CPE sheathed cable. Available in IS (individually screened) or CS (collectively screened) variants across 2–30 core configurations.

Core: Class 5 tinned annealed Cu (AS/NZS 1125). Power cores: Red, White, Blue. Earth cores: Black. Pilot: Grey.

Insulation: EPR (R-EP-90). Polyester tape over conductor before and after EPR.

Screen (IS): Composite tinned Cu wire and polyester yarn braid —applied individually per power core. Pilot also screened.

Screen (CS): Single composite screen over complete assembled core group.

Pilot (IS): Tinned annealed Cu, R-EP-90 insulated, individually screened.

Filler: Partially cured filler — circular or near-triangular.

Binder: Non-woven fabric tape over assembled group.

Sheath: HD-90-CPE (Black) — UV resistant, oil resistant, flame retardant.

• Underground machine cables requiring individual core screening
• Protection relay circuits demanding screened pilot conductors
• Multi-core control, SCADA, interlock and monitoring cables
• Applications where per-phase earthing integrity is independently
• monitored