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Product

PN-G-90006 Polish mining MV cablePN-G-90006 Mining Standard3.6/6 kV · XLPE (XS) +90 °CUnarmoured · Flame-Retardant yn

YHKGXSyn CablePolish 3.6/6 kV XLPE-insulated (XS) unarmoured flame-retardant PVC (yn) mining cable

Polish underground mining medium-voltage power cable (YHKGXSyn) built to PN-G-90006 with Class 1/2 bare copper conductors, +90 °C cross-linked polyethylene (XS) insulation and oxygen-index ≥ 29 % flame-retardant PVC (yn) outer sheath for protected.

Flame-retardant

Oil-resistant

Water-resistant

Approved

Cross-section

Order designation: YHKGXSyn 3×95 3.6/6kV
Outer Ø ≈: 44.0 mm
Copper weight: 2,565 kg/km
Total weight ≈: 3,680 kg/km
Ampacity (air): 295 A

All sizes (10)

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Engineering reply in 2 business hoursCut-to-length export drumsEN 10204 3.1 certificate per drum

Rated voltage: 3.6/6 kV
Insulation (XS): XLPE (+90 °C)
Outer sheath: PVC-yn (Red)
Construction: Unarmoured
Cross-sections: 3×16–240 mm²
Min. bend R: 12 × OD

Typical values for this cable type, based on PN-G-90006 / PN-93/E-90401 / IEC 60502-2 — confirmed in the datasheet and quotation for your order.

Application fit

Is YHKGXSyn right for your machine?

Engineered for fixed power distribution in underground coal, copper and salt mine galleries, chambers and substations where cables are suspended on non-combustible hooks away from haulage impact and methane-zone phase screening is not required.

Mine roadway & tunnel wall hangers

Suitable

Suspended along protected horizontal mine galleries, pump chambers and underground substations.

Fixed installation

Suitable

Suitable for indoor industrial cable trays, tunnels and mining surface shafts.

TBM gantry & advancing tunnel reel

With conditions

Unarmoured sheath; where rockfall or mechanical impact exists, specify YHKGXSFtZnyn or YHKGXSFoyn.

Free-hanging vertical run

Not suitable

Not approved for vertical mine shafts; specify round-wire-armoured YHKGXSFoyn.

YHKGXSFoyn Shaft Wire-Armoured Cable

Typical machinesUnderground Coal & Copper MinesMining Substation InterconnectionsPotash, Salt & Gypsum GalleriesUnderground Dewatering Pump Stations

Construction

Layer by layer

Shown: YHKGXSyn 3×120 mm² 3.6/6 kV with compacted Class 2 copper conductors, extruded XLPE (XS) insulation, non-hygroscopic flame-retardant filler bedding and red flame-retardant PVC (yn) outer sheath.

Schematic, not to scale — generated from the layer data

#	Layer	Material & reference
1	Compacted stranded bare copper (RMC)	IEC 60228 / PN-EN 60228 Class 1 (RE, 16–25 mm²) or Class 2 (RMC, 35–240 mm²) annealedLow DC resistance and compact circular profile
2	Cross-linked polyethylene (XS / XLPE)	Extruded +90 °C XLPE dielectric compound (2.5 mm radial wall at 3.6/6 kV)Upgrades thermal rating from +70 °C (PVC) to +90 °C (+250 °C short-circuit)
3	Flame-retardant non-hygroscopic inner filling	Extruded halogen-controlled Elastomer/PVC filling compoundFills interstices to prevent longitudinal methane or moisture migration
4	Flame-retardant mining PVC outer sheath (yn)	Special self-extinguishing PVC compound (Oxygen Index ≥ 29 %) in Red (3.6/6 kV MVPasses IEC 60332-3-22 Category A bunched vertical flame propagation test

YHKGXSyn (Unscreened, Unarmoured)

3-core XLPE (XS) + flame-retardant PVC (yn) for non-gassy protected galleries

YHKGXSekyn (+ Copper Phase Screen ek)

Adds individual copper screen over each XLPE phase for methane-hazard mines

YHKGXSFtZnyn (+ Flat Steel Tape Armour)

Adds double galvanized flat steel tape armour (FtZn) for roadway crush protection

Technical data

Ratings & operating limits

Typical values: Typical values for this cable type, based on PN-G-90006 / PN-93/E-90401 / IEC 60502-2. Values for your order are confirmed in the datasheet and quotation.

Electrical

Rated voltage (U₀/U): 3.6/6 kV (Umax = 7.2 kV) · also 0.6/1 kV on request
50 Hz AC test voltage (5 min): 11 kV AC rms (for 3.6/6 kV rating)
Max. conductor DC resistance @ 20 °C: 1.15 Ω/km (16 mm²) to 0.0754 Ω/km (240 mm²) per IEC 60228

Thermal

Max. conductor operating temperature: +90 °C continuous · +250 °C short-circuit (max. 5 s)
Ambient temperature range: −30 °C to +70 °C (fixed) · −5 °C to +50 °C (laying)

Mechanical

Minimum bending radius: 12 × OD (fixed multi-core installation)
Max. permissible roadway inclination: Up to 15° (unarmoured); use FtZn to 45° or Fo to 90°

Resistance

Flame retardance: PN-EN 60332-1-2 & PN-EN 60332-3-22 Cat A (Oxygen Index ≥ 29 %)
Mine water & oil resistance: Resistant to acidic/alkaline mine water and hydraulic emulsions

Reference standards

Governing standards: PN-G-90006, PN-93/E-90401, ZN-TF & IEC 60502-2
Mining authority approval: WUG (Wyższy Urząd Górniczy) underground mine safety compliant

Identification

Polish code breakdown: Y (PVC) + HKG (mining) + XS (XLPE) + yn (flame-retardant PVC)
Outer sheath colour: Red (3.6/6 kV MV mining) or Black (0.6/1 kV LV mining)
Customs tariff (HS): 8544.60

Sizes

10 standard YHKGXSyn 3.6/6 kV underground mining cable sizes

3-core XLPE-insulated unarmoured mining power cables from 3×16 mm² to 3×240 mm².

Dimensions, weights & ampacity
Order designation	Cross-section	Voltage	Outer Ø ≈ mm	Copper kg/km	Weight ≈ kg/km	In air 25 °C A	Min. bend R mm
3.6/6 kV Three-Core Unarmoured XLPE Mining Cables (YHKGXSyn)
YHKGXSyn 3×16 3.6/6kV	3×16 mm²	3.6/6 kV	27.5	432	1,020	105	330
YHKGXSyn 3×25 3.6/6kV	3×25 mm²	3.6/6 kV	30.2	675	1,340	135	362
YHKGXSyn 3×35 3.6/6kV	3×35 mm²	3.6/6 kV	32.8	945	1,690	165	394
YHKGXSyn 3×50 3.6/6kV	3×50 mm²	3.6/6 kV	36.0	1,350	2,190	198	432
YHKGXSyn 3×70 3.6/6kV	3×70 mm²	3.6/6 kV	39.8	1,890	2,860	245	478
YHKGXSyn 3×95 3.6/6kV	3×95 mm²	3.6/6 kV	44.0	2,565	3,680	295	528
YHKGXSyn 3×120 3.6/6kV	3×120 mm²	3.6/6 kV	47.2	3,240	4,460	340	566
YHKGXSyn 3×150 3.6/6kV	3×150 mm²	3.6/6 kV	50.8	4,050	5,390	385	610
YHKGXSyn 3×185 3.6/6kV	3×185 mm²	3.6/6 kV	54.6	4,995	6,480	440	655
YHKGXSyn 3×240 3.6/6kV	3×240 mm²	3.6/6 kV	59.8	6,480	8,180	515	718

Typical values for this cable type; dimensions and weights for your order are confirmed in the quotation.
Current ratings based on +90 °C XLPE conductor temperature and +25 °C mine gallery ambient air.

Quality & approvals

Testing & inspection

Routine tests on every production length, sample and type tests per batch — documented on an EN 10204 3.1 inspection certificate.

ConductorClass 5 stranding
Spark test100 % in-line
Lay-upCores, earth, fillers
SheathingInner, braid / screen, outer
Electrical testsAC voltage, resistance
DimensionsOD, wall thickness
Inspection documents & dispatchDrum & dispatch

Testing & inspection	Test value / reference	Frequency
Routine tests
11 kV AC 5-minute high-voltage dielectric test	No breakdown across 3.6/6 kV XLPE core insulation	Every drum
Sample tests
IEC 60332-3-22 Cat A vertical bunched flame & Oxygen Index test	Char ≤ 2.5 m; yn PVC sheath Oxygen Index ≥ 29 %	Type & audit test

Inspection certificate

Issued with every drum, listing the routine test results for that length.

Product approvals

PN-G-90006 & WUG Underground Mining CompliantPN-EN 60332-3-22 Category A Flame RetardantCE, RoHS 2 & REACH

Company certificates

ISO 9001ISO 14001ISO 45001VDE marks approvalUL / cULCE · LVD / EMC

Marking & supply

Ordering & delivery

Sheath marking

TEBAOFLEX YHKGXSyn 3.6/6kV <size> PN-G-90006 CE

Delivery form: Non-returnable fumigated wooden or steel drums
Standard lengths: 250 m · 500 m · 1000 m standard drums
MOQ: 250 m (stock sizes) · 500 m (custom)
Lead time: 3–5 weeks ex-works
Incoterms: EXW, FCA, FOB, CIF, DAP

Technical documents

Downloads

PDFYHKGXSyn Cable – technical datasheet10 sizes · construction, technical data, approvals XLSXYHKGXSyn spec data (Excel)All 10 sizes with dimensions and data, for your BOM or quotation

Revision: 2026-10-20
Updated: 2026-10-20

FAQ

Questions engineers ask first

Not covered here? Send your drawing — an engineer replies within 2 business hours.

What do the letters in YHKGXSyn stand for under the Polish mining cable code?

'YHKG' denotes a mining power cable with special PVC compounds, 'XS' denotes cross-linked polyethylene (XLPE, +90 °C) core insulation, and 'yn' denotes an enhanced flame-retardant PVC outer sheath (Oxygen Index ≥ 29 %). Because there is no 'ek' or 'FtZn'/'Fo' in the designation, YHKGXSyn is unscreened and unarmoured.

When must I upgrade from YHKGXSyn to YHKGXSekyn or YHKGXSekFtZnyn?

Under Polish WUG underground mining regulations, medium-voltage cables in methane-hazard galleries or above 3.6/6 kV must include an earthed metallic screen over each phase ('ek', as in YHKGXSekyn). If the gallery is also exposed to rockfall, mobile machinery or inclination up to 45°, add flat steel tape armour ('FtZn', as in YHKGXSekFtZnyn).

Why is the outer sheath of 3.6/6 kV YHKGXSyn coloured red?

Polish mining standard PN-G-90006 mandates a red outer sheath on medium-voltage (≥ 3.6/6 kV) underground mining cables to visually distinguish energized MV feeders from black/yellow low-voltage and intrinsically safe blue cables in dim mine galleries.

What factory routine tests and certificates are supplied with YHKGXSyn?

Every production drum of YHKGXSyn undergoes 100 % conductor DC resistance measurement at 20 °C, high-voltage AC/DC dielectric withstand testing, and dimensional verification per PN-G-90006 / PN-93/E-90401 / IEC 60502-2, supplied with an EN 10204 3.1 inspection certificate.

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YHKGXSyn Cable

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