Application & Underground Mining Service
YnOGY 0.6/1 kV is a Polish PN-G and PN-EN compliant flexible multi-core PVC mining cable engineered for power supply and pilot control of mobile, semi-mobile, and stationary machinery across non-explosion-hazard underground headings, open-pit quarries, and strip mining operations throughout Upper Silesia and Ostrava-Karvina.
Mobile & Semi-Mobile Mine Equipment
Supplies 0.6/1 kV three-phase power and pilot interlock circuits to feeder-breakers, stage loaders, roadway belt drives, auxiliary dewatering pumps, and drilling rigs relocated along mine headings.
Tactile Corrugated Protective Core
Incorporates a longitudinally ribbed black protective earth core alongside Natural, Red, and Blue power phases, allowing underground electricians to verify earth continuity by both sight and touch in low-light galleries.
High-Visibility Yellow OI > 29 Jacket
Bright yellow special non-flammable PVC outer compound achieves an oxygen index above 29 and passes PN-EN 60332-1 and PN-EN 60332-3-24 bundled vertical flame-spread tests while maximizing roadway visibility.
Gassy Methane Heading Boundary: Standard unscreened YnOGY is designated strictly for underground, open-pit, and strip mine workings without methane or coal-dust explosion hazard. For gassy roadways classified under methane hazard classes a, b, or c, specify individually screened YnOGYek or YnOGYekm.
Cable Construction & Layer Anatomy
Manufactured to Polish mining cable nomenclature (Y = PVC, n = elevated oxygen index OI > 29, O = mobile flexible duty, G = mining service), YnOGY pairs fine-stranded Class 5 bare copper conductors with parallel core stranding around a central filler and dual extruded PVC sheaths.
| Layer / Component | Material & Polish PN-G / PN-EN Standard Engineering Specification |
|---|---|
| 1. Conductors | Flexible multi-wire bare annealed copper conductors complying with PN-EN 60228 Class 5 across power (2.5–120 mm²), protective (2.5–25 mm²), and control (2.5–6 mm²) cores. |
| 2. Core Insulation | Special mining-grade polyvinyl chloride (PVC) compound extruded with uniform radial wall thickness for 0.6/1 kV power phases and auxiliary control circuits. |
| 3. Core Identification | Power cores: Natural (uncoloured), Red, Blue; Protective earth core: Black with longitudinal external corrugations (ribs); Control cores: Brown (in 5-core) or Natural, Red, Blue (in 7-core). |
| 4. Core Layup & Central Filler | Insulated cores parallel-stranded with controlled lay length around a shaped central non-hygroscopic filler to preserve circular cable geometry under bending. |
| 5. Inner Sheath | Extruded interstitial PVC inner sheath locking the core assembly against torsional core migration and moisture tracking. |
| 6. Outer Sheath | Heavy-duty Yellow special non-flammable PVC outer sheath (Oxygen Index > 29), abrasion-resistant and self-extinguishing to PN-EN 60332-1 and PN-EN 60332-3-24 (IEC 60332-3 Cat. C). |
YnOGY 0.6/1 kV Cross-Section (4-Core Configuration): Three PN-EN 60228 Class 5 bare copper power cores (Natural, Red, Blue) and one black corrugated protective earth core parallel-stranded around a central filler inside a PVC inner sheath and yellow flame-retardant PVC outer sheath (OI > 29).
Technical Characteristics
YnOGY 0.6/1 kV combines a 3.2 kV AC dielectric test on main power cores (2.0 kV on auxiliary control cores) with a -30°C to +70°C continuous operating temperature window, 160°C short-circuit thermal stability, and bundled flame-retardant compliance under PN-EN 60332-3-24.
| Parameter | Polish PN-G / PN-EN Standard Rated Value |
|---|---|
| Cable Type Designation | YnOGY 0.6/1 kV (Polish PN-G / WUG Underground Mining Nomenclature) |
| Rated Voltage (Uo/U) | 0.6/1 kV (600/1000 V AC three-phase systems) |
| Routine AC Test Voltage | 3.2 kV (50 Hz) for power cores | 2.0 kV (50 Hz) for control cores |
| Conductor Class & Standard | PN-EN 60228 / IEC 60228 Class 5 flexible bare copper |
| Operating Temperature Range | -30°C to +70°C ambient / conductor operating limit |
| Max. Short-Circuit Temperature | +160°C (up to 5 seconds duration) |
| Minimum Bending Radius | 6 × Overall Cable Diameter (fixed) | 10 × Overall Cable Diameter (movable service) |
| Flame Retardancy & Oxygen Index | Oxygen Index OI > 29; single-cable PN-EN 60332-1 & bundled vertical flame test PN-EN 60332-3-24 (IEC 60332-3) |
| Permissible Mine Scope | Underground, open-pit, and strip mines in workings without methane or coal-dust explosion hazard |
Dimensional, Weight & Electrical Specifications (4, 5 & 7 Cores)
The four tables below provide verified outer diameters (17.6–60.7 mm), nominal cable weights (424–6900 kg/km), and phase electrical parameters across all 19 standard YnOGY 4-core, 5-core, and 7-core constructions, supplemented with statutory PN-EN 60228 Class 5 maximum DC conductor resistance at 20°C.
Table 1A — YnOGY 4-Core (3 Power + 1 Corrugated Protective Core) Dimensions & Weight
| Part Construction (mm²) | Power Cores (n × mm²) | Protective Core (mm²) | Approx. Outer Diameter (mm) | Approx. Cable Weight (kg/km) |
|---|---|---|---|---|
| 3×2.5+2.5 | 3 × 2.5 | 2.5 | 17.6 | 424 |
| 3×4+4 | 3 × 4 | 4 | 18.6 | 502 |
| 3×6+6 | 3 × 6 | 6 | 21.3 | 616 |
| 3×10+10 | 3 × 10 | 10 | 24.7 | 800 |
| 3×16+16 | 3 × 16 | 16 | 28.6 | 1377 |
| 3×25+16 | 3 × 25 | 16 | 35.1 | 2050 |
| 3×35+16 | 3 × 35 | 16 | 38.3 | 2500 |
| 3×50+25 | 3 × 50 | 25 | 44.2 | 3435 |
| 3×70+25 | 3 × 70 | 25 | 49.7 | 4487 |
| 3×95+25 | 3 × 95 | 25 | 56.6 | 5780 |
| 3×120+25 | 3 × 120 | 25 | 60.7 | 6900 |
Table 1B — YnOGY 5-Core (3 Power + 1 Protective + 1 Brown Control Core) Dimensions & Weight
| Part Construction (mm²) | Power Cores (n × mm²) | Protective Core (mm²) | Control Core (mm²) | Approx. Outer Diameter (mm) | Approx. Cable Weight (kg/km) |
|---|---|---|---|---|---|
| 3×2.5+2.5+2.5 | 3 × 2.5 | 2.5 | 1 × 2.5 | 19.0 | 469 |
| 3×4+4+4 | 3 × 4 | 4 | 1 × 4 | 20.3 | 588 |
| 3×6+6+4 | 3 × 6 | 6 | 1 × 4 | 23.1 | 738 |
| 3×10+10+6 | 3 × 10 | 10 | 1 × 6 | 26.8 | 1054 |
Table 1C — YnOGY 7-Core (3 Power + 1 Protective + 3 Control Cores) Dimensions & Weight
| Part Construction (mm²) | Power Cores (n × mm²) | Protective Core (mm²) | Control Cores (n × mm²) | Approx. Outer Diameter (mm) | Approx. Cable Weight (kg/km) |
|---|---|---|---|---|---|
| 3×4+4+3×4 | 3 × 4 | 4 | 3 × 4 | 23.0 | 810 |
| 3×6+6+3×6 | 3 × 6 | 6 | 3 × 6 | 26.5 | 1255 |
| 3×25+16+3×2.5 | 3 × 25 | 16 | 3 × 2.5 | 39.2 | 2780 |
| 3×35+16+3×2.5 | 3 × 35 | 16 | 3 × 2.5 | 42.7 | 3684 |
Table 2 — YnOGY Phase Electrical Parameters & Current-Carrying Capacity (2.5–120 mm²)
| Power Core Cross-Section (mm²) | Max. DC Resistance at 20°C (Ω/km)* | Inductive Reactance at 50 Hz (Ω/km) | Phase Inductivity (mH/km) | Current-Carrying Capacity (A) |
|---|---|---|---|---|
| 2.5 | 7.98 | 0.110 | 0.35 | 27 |
| 4 | 4.95 | 0.101 | 0.32 | 37 |
| 6 | 3.30 | 0.101 | 0.32 | 47 |
| 10 | 1.91 | 0.097 | 0.31 | 66 |
| 16 | 1.21 | 0.094 | 0.30 | 87 |
| 25 | 0.780 | 0.094 | 0.30 | 113 |
| 35 | 0.554 | 0.091 | 0.29 | 140 |
| 50 | 0.386 | 0.091 | 0.29 | 172 |
| 70 | 0.272 | 0.088 | 0.28 | 212 |
| 95 | 0.206 | 0.088 | 0.28 | 257 |
| 120 | 0.161 | 0.085 | 0.27 | 295 |
Polish PN-G 0.6/1 kV Flexible Mining Cable Selection Guide
Choosing among Polish 0.6/1 kV flexible PVC mining cables (YnOGY, YnOGYek, and YnOGYekm) versus fixed roadway power feeders (YnKGY-żo and YKGYyn-żo) depends directly on underground mine methane classification (non-gassy workings versus gassy classes a, b, c), ground-fault leakage monitoring topology, and machinery mobility.
| Polish PN-G Cable Type | Screening Architecture, Conductor Class & Approved Underground Mining Zone |
|---|---|
| YnOGY (0.6/1 kV — This Cable) | Unscreened flexible Class 5 bare copper (4, 5, or 7 cores) with black corrugated protective core and yellow OI > 29 PVC outer sheath; strictly for non-explosion-hazard underground, open-pit, and strip mines. |
| YnOGYek (0.6/1 kV) | Extruded semi-conducting compound screen over each power core (2.5–10 mm², 5-core) + central bare Cu earth; approved for methane hazard classes a, b, c and coal-dust hazard classes A, B, C. |
| YnOGYekm (0.6/1 kV) | Individual copper-wire + plastic-thread hybrid braid screen on power cores (2.5–120 mm², 5 & 7-core) + central bare Cu earth; heavy-duty feeder for methane classes a, b, c and coal-dust classes A, B. |
| YKGYyn-żo / YnKGY-żo | Class 1/2 solid or stranded copper (1.5–10 mm², 3–5 cores with green-yellow PE) for fixed roadway lighting, switchgear interconnections, and stationary distribution in non-methane workings. |
Frequently Asked Questions (FAQ)
Below are practical engineering answers to frequent technical specification and procurement questions from Polish Upper Silesian and Czech Ostrava-Karvina mine electrical teams regarding YnOGY yellow outer sheath color rules, tactile corrugated earth core identification, multi-pilot control-core configurations, and routine factory dielectric testing.
Why is the outer sheath of YnOGY 0.6/1 kV bright yellow instead of black?
Under Polish underground mining voltage color-coding conventions, low-voltage 0.6/1 kV flame-retardant PVC cables (OI > 29) use a high-visibility yellow outer sheath so maintenance crews immediately distinguish 0.6/1 kV circuits from 3.6/6 kV medium-voltage cables (red sheath) and intrinsically safe telecom lines (blue sheath).
What is the function of the black corrugated core inside YnOGY?
Rather than relying solely on green-yellow color pigment in dusty or dimly lit headings, YnOGY uses a longitudinally ribbed (corrugated) black insulation profile on the protective earth conductor, providing unmistakable tactile and visual phase-to-earth differentiation during gland termination.
When should we select 5-core or 7-core YnOGY instead of 4-core?
4-core YnOGY (3 power + 1 protective) supplies direct three-phase motors. Select 5-core (+1 brown control core) for remote contactor pilot interlocks, or 7-core (+3 Natural/Red/Blue control cores) where start/stop/interlock monitoring shares the same power feeder.
What routine tests and reel lengths are supplied with TEBAOFLEX YnOGY?
Every production drum undergoes conductor DC resistance measurement, 3.2 kV / 2.0 kV AC dielectric spark/voltage testing, structural dimension verification, and OI > 29 flame-retardant compound batch control. Standard supply is 500 m or 1000 m export wooden drums.
Need a Factory Quote for Polish Standard YnOGY 0.6/1 kV Cable?
Send your required core formation (4-core, 5-core, or 7-core from 2.5 mm² to 120 mm²) and delivery schedule for Polish or Czech mining projects to receive a formal quotation within 24 hours.
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