YHKGYFoyn 3.6/6 kV Individually Screened Steel-Wire-Armoured Underground Mine Power Cable

Fixed 6 kV distribution in underground mines, from shaft-bottom substations to section transformers and pump chambers, needs armoured cable that stays in place for years and resists crushing and fire. YHKGYFoyn is a 3.6/6 kV PVC-insulated mine power cable for this duty. Its three circular compacted Class 2 copper conductors to BS EN 60228 are insulated with PVC compound type DIV14, and the H in the designation marks an individual screen of conductive non-metallic tape and copper tape over each core.

The screened cores are laid up with a central copper wire or filler, filled with rubber compound and covered with a PVC inner sheath type DMV6. A single layer of galvanized steel wires with a steel tape gives mechanical protection, and a red flame-retardant PVC sheath type DMV31 meets the bunched-cable flame test of IEC 60332-3-24. The reference schedule lists 18 designations from 3x25RMC/16 to 3x240RMC/30 mm² with outer diameters of 46.5 mm to 80.6 mm, net weights of 4632 to 16867 kg/km and maximum conductor resistances of 0.727 to 0.0754 Ω/km at 20 °C.

Individual core screens give each phase its own earthed screen, which confines the electric field at 6 kV and lets earth-fault protection act on a single core. Collective-screen YKGYFoyn and the other Polish and Czech fixed constructions are covered on our fixed mining power cable page.

Explore the mining and tunneling cable range for related configurations.

YHKGYFoyn 3.6/6 kV Cable Construction & Layer Structure

The representative horizontal sample shows YHKGYFoyn 3.6/6 kV 3x95RMC/16: three compacted copper conductors with natural PVC insulation and individual conductive tape and copper tape screens, rubber filling, a PVC inner sheath, galvanized steel wire armour with steel tape and a red flame-retardant PVC outer sheath.

YHKGYFoyn Type Designation Breakdown

• Y (first): PVC insulation
• H: individual screen on each core (conductive tape and copper tape)
• K: power cable
• G: mining (górniczy) duty
• Fo: armour of round galvanized steel wires
• yn: flame-retardant PVC outer sheath

YHKGYFoyn 3.6/6 kV Underground Mine Applications & Duty Scope

Specify YHKGYFoyn for fixed 3.6/6 kV mine distribution where individually screened cores and steel wire armour are required.

• Shaft-bottom and section substations fed at 3.6/6 kV on fixed underground routes.
• Main pump chambers, conveyor drive houses and ventilation stations requiring armoured 6 kV supply.
• Roadway and drift distribution on brackets or trays where bunched cables must meet IEC 60332-3-24.
• Polish and Central European mine projects that specify YHKGYFoyn by designation.

YHKGYFoyn vs YKGYFoyn, MYJV and VBbShvng(A)-LS Selection Boundary

Individual-screen and collective-screen versions differ in termination and earthing practice and are not interchangeable without checking the switchgear and gland arrangement.

Related selection resources

• Mining and tunneling cable engineering solutions
• Armoured and static mining cable engineering guide for fixed distribution routes
• Fixed Mining Power Cable — PVC / HEPR, SWA / STA Options
• MYJV, MYJV22, MYJV32, MYJV42 and MYJV-GXT XLPE Mine Power Cable
• VBbShvng(A)-LS GOST 31996 Steel-Tape Armoured Underground Mine Power Cable

YHKGYFoyn 3.6/6 kV Frequently Asked Questions

What does the H in YHKGYFoyn mean?

It marks an individual screen: each core has its own conductive non-metallic tape and copper tape, instead of one collective screen over all three cores.

What does 3x95RMC/16 mean?

Three round multi-wire compacted 95 mm² copper conductors; the figure after the slash is part of the reference designation, and the screen or earth arrangement it refers to is confirmed on the quotation drawing.

Can YHKGYFoyn hang in a vertical shaft?

It is designed for fixed installation. Vertical shaft suspension depends on armour sizing and the support method, which are confirmed on the order drawing; the maximum pulling stress with a cable grip is 50 N/mm² of copper.

What are the MOQ and lead time?

The minimum order quantity is 50 m and the manufacturing lead time is 7 to 45 working days, depending on size and quantity.

YHKGYFoyn Dimensions, Weight, Resistance & Technical Specifications

YHKGYFoyn Key Specifications

• Voltage: 3.6/6 kV
• Screen: Conductive tape and copper tape on each core
• Armour: Single layer galvanized steel wire with steel tape
• Sizes: 3x25 to 3x240 mm², 18 reference designations
• Supply: MOQ 50 m; 7 to 45 working days

YHKGYFoyn 3.6/6 kV Reference Schedule

YHKGYFoyn Construction and Rating Parameters

RMC denotes a round multi-wire compacted conductor; the figure after the slash (16, 25 or 30) is part of the reference designation, and the resulting screen or earth arrangement is confirmed on the quotation drawing.

Polish designations and the ZN / WT works standards are cited as construction references; TEBAOFLEX builds to the referenced construction and does not claim a Polish mining admission or third-party approval for it, so state the approval documents your mine requires when requesting a quotation.

ASCII part references for BOM and ERP entry: YHKGYFoyn 3x25RMC/16, YHKGYFoyn 3x25RMC/25, YHKGYFoyn 3x35RMC/16, YHKGYFoyn 3x35RMC/25, YHKGYFoyn 3x50RMC/16, YHKGYFoyn 3x50RMC/25, YHKGYFoyn 3x70RMC/16, YHKGYFoyn 3x70RMC/25, YHKGYFoyn 3x95RMC/16, YHKGYFoyn 3x95RMC/30, YHKGYFoyn 3x120RMC/16, YHKGYFoyn 3x120RMC/30, YHKGYFoyn 3x150RMC/25, YHKGYFoyn 3x150RMC/30, YHKGYFoyn 3x185RMC/25, YHKGYFoyn 3x185RMC/30, YHKGYFoyn 3x240RMC/25, YHKGYFoyn 3x240RMC/30.

YHKGYFoyn Standards & Test References (PN-HD 620 S1, IEC 60332-3-24)

Certifications and document support

TEBAOFLEX company certificates and quality system documentation

IEC Webstore — IEC 60228 conductor and IEC 60332-3-24 bunched-cable flame test publications (international references)