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Product

PN-G-90100 Polish Mining Rubber CablesPN-G-901053.6/6–6/10 kVRadial Screened (S)/(Z)

OnGcrekgż-G(S) / OnGcrekgż-G(Z) S/Z-Series MV Mining Rubber CablePN-G-90105 · 3.6/6 & 6/10 kV · Radial Cu + semicon screens ('rekg') · (S) gallery & (Z)

OnGcrekgż-G(S) and OnGcrekgż-G(Z) are 3.6/6 kV and 6/10 kV radial-screened medium-voltage mining rubber cables to PN-G-90105. The 'r' denotes a radial metallic copper screen over the semi-conductive rubber layer ('rekg') for high earth-fault capacity

EMC screen

Anti-torsion braid

Flame-retardant

Oil-resistant

Series, Voltage & Configuration

Order designation: OnGcrekgż-G(S) 6/10 kV 3×50+1×25+1×6
Outer Ø ≈: 56.0 mm
Copper weight: 1,860 kg/km
Total weight ≈: 4,460 kg/km
Min. bend R (fixed): 336 mm

All sizes (12)

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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 & 6/10 kV
Radial screen: Cu + semicon 'r'
Series options: (S) & (Z) types
Conductor max.: +90 °C
Min. bend R: 6 × D / 10 × D
Flame test: IEC 60332-1-2

Typical values for this cable type, based on PN-G-90105 / ZN-TF-212 — confirmed in the datasheet and quotation for your order.

Application fit

Is OnGcrekgż-G(S) / OnGcrekgż-G(Z) right for your machine?

Designed for 3.6/6 kV and 6/10 kV underground coal and copper mine distribution where high earth-fault currents require a metallic copper radial screen ('r') in addition to semi-conductive rubber.

Mine roadway & tunnel wall hangers

Suitable

OnGcrekgż-G(S) is optimized for roadway gallery hangers linking shaft feeders to mobile substations.

Trailing & towing

Suitable

OnGcrekgż-G(Z) features an anti-crush/anti-torsion braid for MV shearers and mobile transformers.

Longwall shearer & Bretby handler

Suitable

The (Z) series handles cyclic bending in large-radius 3.3–6 kV longwall Bretby cable handlers.

Motorised monospiral reel

Suitable

The reinforced (Z) series supports monospiral MV drum reeling on shuttle and heading equipment.

Fixed installation

Suitable

High metallic screen cross-section meets stringent underground MV earth-fault impedance limits.

Typical machines3.6/6 & 6/10 kV Underground MinesDistrict Mobile Transformer StationsHigh-Power 3.3–6 kV Longwall FacesMine Shaft & Incline MV Trunk LinesHeavy Tunnel Boring Machines (TBM)

Construction

Layer by layer

Triple-extruded +90 °C MV EPR cores with radial copper wire/tape + semi-conductive rubber screen ('rekg'), pilot core ('ż'), PE, and (S)

Schematic, not to scale — generated from the layer data

#	Layer	Material & reference
1	Flexible copper phase conductor	Class 5 fine-stranded plain or tinned annealed copper wireIEC 60228 Class 5
2	Inner conductor stress-control layer	Extruded semi-conductive rubber layer bonded to insulationPN-G-90105
3	+90 °C MV EPR dielectric ('c')	Ozone- and PD-resistant medium-voltage ethylene-propylene elastomerPN-G-90105
4	Outer semicon + radial copper screen	Semi-conductive rubber layer plus helically lapped/braided annealed copper wire radialPN-G-90105 / ZN-TF-212
5	Pilot core ('ż') & earth conductor	Screened auxiliary control core and bare flexible copper earth conductorPN-G-90105
6	Anti-torsion reinforcement braid	High-tenacity synthetic reinforcement braid vulcanised between inner and outer sheathsZN-TF-212
7	Underground MV mining PCP sheath ('-G')	Heavy-duty flame-retardant, oil-resistant polychloroprene outer jacket, red or blackPN-G-90105

OnGcrekgż-G(S)

S-Series for roadway gallery hangers and semi-stationary connections between underground MV switchgear and

OnGcrekgż-G(Z)

Z-Series with embedded anti-torsion/anti-crush reinforcement braid for mobile trailing and drum-reeled MV

Technical data

Ratings & operating limits

Typical values: Typical values for this cable type, based on PN-G-90105 / ZN-TF-212. Values for your order are confirmed in the datasheet and quotation.

Electrical

Rated voltage U0/U: 3.6/6 kV or 6/10 kV AC
Maximum system voltage Um: 7.2 kV or 12.0 kV AC
Routine AC test voltage: 11 kV (3.6/6 kV) / 17 kV (6/10 kV)
Partial discharge level: ≤ 20 pC at 1.5 × U0
Metallic radial screen ('r'): Low-impedance copper wire/braid screen
Pilot core voltage rating: 250 V AC

Thermal

Max. conductor operating temp.: +90 °C continuous ('c' MV EPR)
Max. short-circuit temperature: +250 °C (max. 5 s)
Mobile ambient range: -25 °C to +60 °C
Fixed ambient range: -40 °C to +60 °C
Min. laying temperature: -15 °C
Metallic screen SC rating: +200 °C earth-fault thermal limit

Mechanical

Min. bend radius (S-series): 6 × overall diameter (D)
Min. bend radius (Z-series): 10 × overall diameter (D)
Max. tensile pull (S / Z): 15 N/mm² (S) / 25 N/mm² (Z)
Torsional stability (Z-series): ±50 °/m anti-twist braid
Crush & impact resistance: Heavy underground '-G' PCP sheath
Tear resistance: ≥ 18 N/mm (Z-series)

Resistance

Flame retardance: IEC 60332-1-2 / PN-G-90100 '-G'
Mineral oil & hydraulic emulsion: EN 60811-404 resistant PCP
Ozone & partial discharge: Triple-extruded MV EPR + 'rekg'
Mine water & humidity: Acidic/alkaline mine water resistant
EMC & radial field containment: 100 % radial electric field control
Halogen status: Polychloroprene elastomer

Reference standards

Primary product standard: PN-G-90105 / ZN-TF-212
Mining series base standard: PN-G-90100
Conductor standard: IEC 60228 Class 5
Flame propagation test: PN-EN 60332-1-2
Mining authority compliance: WUG Poland MV underground rules
Quality certification: EN 10204 3.1 + PD routine test

Identification

Phase core identification: Numbered 1, 2, 3
Pilot core identification: Screened auxiliary control core
Outer sheath colour: Red or black
Sheath marking: OnGcrekgż-G(S) or (Z) [U0/U] PN-G-90105
Length marking: Sequential metre marking
Batch traceability: Drum serial & HV test certificate

Sizes

12 standard configurations (OnGcrekgż-G(S) / OnGcrekgż-G(Z))

Nominal dimensions, copper weights and electrical parameters for OnGcrekgż-G(S) / OnGcrekgż-G(Z) per PN-G-90105 / ZN-TF-212.

Dimensions & weights
Order designation	Series, Voltage & Configuration	Phase size mm²	Outer Ø ≈ mm	Copper kg/km	Weight ≈ kg/km	Min. bend R fixed mm
OnGcrekgż-G(S) — Roadway & semi-fixed MV mining feeder series
OnGcrekgż-G(S) 3.6/6 kV 3×25+1×16+1×6	3.6/6 kV 3×25+1×16+1×6	25	44.0	1,020	2,680	264
OnGcrekgż-G(S) 3.6/6 kV 3×35+1×16+1×6	3.6/6 kV 3×35+1×16+1×6	35	46.8	1,315	3,150	281
OnGcrekgż-G(S) 3.6/6 kV 3×50+1×25+1×6	3.6/6 kV 3×50+1×25+1×6	50	51.6	1,845	3,980	310
OnGcrekgż-G(S) 6/10 kV 3×50+1×25+1×6	6/10 kV 3×50+1×25+1×6	50	56.0	1,860	4,460	336
OnGcrekgż-G(S) 6/10 kV 3×70+1×35+1×6	6/10 kV 3×70+1×35+1×6	70	60.8	2,540	5,490	365
OnGcrekgż-G(S) 6/10 kV 3×95+1×50+1×6	6/10 kV 3×95+1×50+1×6	95	66.5	3,420	6,810	399
OnGcrekgż-G(Z) — Reinforced trailing & dynamic MV mining series
OnGcrekgż-G(Z) 3.6/6 kV 3×25+1×16+1×6	3.6/6 kV 3×25+1×16+1×6	25	45.6	1,020	2,860	274
OnGcrekgż-G(Z) 3.6/6 kV 3×35+1×16+1×6	3.6/6 kV 3×35+1×16+1×6	35	48.5	1,315	3,360	291
OnGcrekgż-G(Z) 3.6/6 kV 3×50+1×25+1×6	3.6/6 kV 3×50+1×25+1×6	50	53.4	1,845	4,220	320
OnGcrekgż-G(Z) 3.6/6 kV 3×70+1×35+1×6	3.6/6 kV 3×70+1×35+1×6	70	58.2	2,540	5,210	349
OnGcrekgż-G(Z) 6/10 kV 3×50+1×25+1×6	6/10 kV 3×50+1×25+1×6	50	57.8	1,860	4,720	347
OnGcrekgż-G(Z) 6/10 kV 3×70+1×35+1×6	6/10 kV 3×70+1×35+1×6	70	62.6	2,540	5,780	376

Typical values for this cable type; dimensions and weights for your order are confirmed in the quotation.
Outer diameters and weights are nominal factory values subject to ±5 % manufacturing tolerance per PN-G-90105 / ZN-TF-212.

Electrical & ampacity data
Configuration	Max. DC R @ 20 °C Ω/km	Current rating in air (A)	Current rating installed (A)	Mutual C pF/m ≈	AC test V rms
3.6/6 kV 3×25+1×16+1×6	0.780	123	105	114	11,000
3.6/6 kV 3×35+1×16+1×6	0.554	152	129	129	11,000
3.6/6 kV 3×50+1×25+1×6	0.386	189	161	150	11,000
6/10 kV 3×50+1×25+1×6	0.386	189	161	150	17,000
6/10 kV 3×70+1×35+1×6	0.272	233	198	180	17,000
6/10 kV 3×95+1×50+1×6	0.206	282	240	216	17,000
3.6/6 kV 3×25+1×16+1×6	0.780	123	105	114	11,000
3.6/6 kV 3×35+1×16+1×6	0.554	152	129	129	11,000
3.6/6 kV 3×50+1×25+1×6	0.386	189	161	150	11,000
3.6/6 kV 3×70+1×35+1×6	0.272	233	198	180	11,000
6/10 kV 3×50+1×25+1×6	0.386	189	161	150	17,000
6/10 kV 3×70+1×35+1×6	0.272	233	198	180	17,000

Current ratings apply at +25/+30 °C ambient in free air; apply standard derating factors for elevated ambient or drum coiling.

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
MV AC voltage withstand test	11 kV rms (3.6/6 kV) or 17 kV rms (6/10 kV) for 5 minutes	Every drum
Partial discharge & radial screen resistance	PD ≤ 20 pC at 1.5 × U0; copper radial screen DC resistance verified	Every drum
Sample tests
Tensile & torsional flex test (Z-series)	No copper screen strand breakage after cyclic bending under tension	Per batch
Flame propagation & earth-fault current test	Passes PN-EN 60332-1-2 and radial screen short-circuit rating	Type approval

Inspection certificate

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

Product approvals

PN-G-90105 / ZN-TF-212IEC 60332-1-2WUG / CE

Company certificates

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

Marking & supply

Ordering & delivery

Sheath marking

TEBAOFLEX OnGcrekgż-G(Z) 6/10 kV

Delivery form: Fumigated export wooden drums or coils
Standard drum lengths: 500 m · 1000 m (or custom cut lengths)
MOQ: 100 m (stock sizes) · 300–500 m (production)
Lead time: 2–4 weeks ex-works
Incoterms: EXW, FOB, CIF, DAP

Technical documents

Downloads

PDFOnGcrekgż-G(S) / OnGcrekgż-G(Z) S/Z-Series MV Mining Rubber Cable – technical datasheet12 sizes · construction, technical data, approvals XLSXOnGcrekgż-G(S) / OnGcrekgż-G(Z) spec data (Excel)All 12 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 does the 'r' in OnGcrekgż-G(S) and OnGcrekgż-G(Z) signify?

The 'r' denotes a radial metallic copper wire/tape screen applied over the outer semi-conductive rubber layer ('rekg') of each medium-voltage phase core, providing a much lower earth-fault impedance and higher fault-current capacity than semi-conductive elastomer alone. Each production drum undergoes routine dielectric voltage testing, conductor DC resistance verification, and dimensional inspection before dispatch with an EN 10204 3.1 mill test certificate.

How do the (S) and (Z) series differ in construction and application?

OnGcrekgż-G(S) is designed for roadway gallery hangers and semi-fixed feeders between underground substations, whereas OnGcrekgż-G(Z) incorporates an anti-torsion, anti-crush synthetic reinforcement braid vulcanised between inner and outer PCP sheaths for mobile trailing and reeling duty. Each production drum undergoes routine dielectric voltage testing, conductor DC resistance verification, and dimensional inspection before dispatch with an EN 10204 3.1 mill test certificate.

Why is triple-extruded 'rekg' screening important at 3.6/6 kV and 6/10 kV?

Co-extruding the inner semi-conductive conductor screen, +90 °C MV EPR insulation, and outer semi-conductive layer eliminates air voids under the metallic radial copper screen, preventing partial discharge degradation during cyclic bending. Each production drum undergoes routine dielectric voltage testing, conductor DC resistance verification, and dimensional inspection before dispatch with an EN 10204 3.1 mill test certificate.

When should OnGcekż/w-GW be chosen instead of OnGcrekgż-G(Z)?

Choose OnGcekż/w-GW when the mine regulation requires both individual phase screens and an overall collective metallic/elastomeric screen ('/w') combined with longitudinal water blocking ('-GW') in wet longwall workings. Each production drum undergoes routine dielectric voltage testing, conductor DC resistance verification, and dimensional inspection before dispatch with an EN 10204 3.1 mill test certificate.

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Reel typeDrum core diameter (mm)Cable length on drum (m)Travel speed (m/min)Max. accelerationCycles per hourLength and quantityAmbient temperatureExposure (outdoor, water, oil, abrasion)Destination countryEquipment and operating conditions

03Message for our engineers

OnGcrekgż-G(S) / OnGcrekgż-G(Z) S/Z-Series MV Mining Rubber Cable

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Reel & motion:
- Reel type: 
- Drum core diameter (mm): 
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- Max. acceleration: 
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Datasheet Request a quote

OnGcrekgż-G(S) / OnGcrekgż-G(Z) S/Z-Series MV Mining Rubber CablePN-G-90105 · 3.6/6 & 6/10 kV · Radial Cu + semicon screens ('rekg') · (S) gallery & (Z)

Mine roadway & tunnel wall hangers

Trailing & towing

Longwall shearer & Bretby handler

Motorised monospiral reel

Fixed installation

OnGcrekgż-G(S)

OnGcrekgż-G(Z)

Electrical

Thermal

Mechanical

Resistance

Reference standards

Identification

Inspection certificate

Product approvals

Company certificates

01Selected sizes

02Reel & motion

03Message for our engineers

OnGcekgż-G 3.6/6–6/10 kV

OnGcekż/w-GW / O2nGcekż/w-GW

OGc

NTSCGEWÖU 3.6/6–18/30 kV