MYP & MYPT Screened Flexible Coal Mining Cable (0.38/0.66–1.9/3.3 kV)

MYP and MYPT screened flexible coal mining cables supply three-phase power to mobile underground coal-face and roadway machinery operating at 0.38/0.66 kV, 0.66/1.14 kV and 1.9/3.3 kV. Manufactured to MT/T 818.5-2009 and MT/T 818.7-2009 (GB/T 12972 series), the 3+1 core layout combines three individually screened power cores with an interstitial grounding core laid around a semiconductive elastomeric center cradle.

In low-voltage MYP 0.38/0.66 kV (4–150 mm²) and MYP 0.66/1.14 kV (10–150 mm²) constructions, each EPR-insulated power core is enclosed in a semiconductive elastomer phase screen that confines the electric field and ensures rapid earth-fault tripping if a cable is crushed. In medium-voltage MYPT 1.9/3.3 kV (35–150 mm²) constructions, a copper-wire and synthetic-fibre composite metallic screen over each power core provides lower fault-loop impedance for high-capacity roadheaders, feeder breakers and armoured face conveyors.

For coal mining projects in China, certificate holder Jiangsu Tebaoli'er Special Cable Co., Ltd. (江苏特宝利尔特种电缆有限公司) holds valid China National Mine Product Safety Mark (MA) certificates MIA230337 for MYP-0.38/0.66 (4–150) mm², MIA230341 for MYP-0.66/1.14 (10–150) mm², and MIA230344 for MYPT-1.9/3.3 (35–150) mm². These MA approvals apply specifically to Chinese coal mines within the certified model and cross-section scope.

Specify the voltage rating (0.38/0.66 kV, 0.66/1.14 kV or 1.9/3.3 kV), nominal power/ground cross-section, outer sheath colour and delivery length with your enquiry. TEBAOFLEX supplies custom production lengths from a 50 m minimum order quantity with a standard lead time of 7–45 working days.

Explore the mining and tunneling cable range for related configurations.

For medium-voltage monitored trailing cables and dedicated longwall shearer cables in the MT 818 coal mining series, compare these constructions: MYPTJ Monitored Medium-Voltage Mining Trailing Cable (3.6/6–8.7/10 kV) (for 3.6/6 kV to 8.7/10 kV medium-voltage underground feeders with semi-conductive insulation screening and pilot monitoring); MCP & MCPTJ Coal Cutter and Shearer Screened Flexible Cable (0.66/1.14–1.9/3.3 kV) (for coal cutter and shearer power supply integrating multi-core control pilots for Bretby cable handler chains). Confirm system voltage (0.38/0.66 kV, 0.66/1.14 kV, or 1.9/3.3 kV) and pilot core count before ordering.

Construction

The representative construction illustrates MYPT 1.9/3.3 kV 3×50 + 1×16 mm²: three equal Class 5 flexible tinned-copper power cores insulated with +90 °C EPR (blue, black and red phase identification) and individually wrapped with a semiconductive layer and tinned-copper composite metallic screen, plus one uninsulated flexible tinned-copper earth core in the interstitial valley, cabled around a central profile cradle and enclosed in a braid-reinforced black flame-retardant chloroprene rubber outer sheath.

Applications

Match the rated voltage class and screen type (MYP semiconductive screen vs. MYPT metallic composite screen) to the underground distribution voltage and earth-leakage relay settings.

• 0.38/0.66 kV MYP trailing feeders for underground coal face drills, bolt rigs, auxiliary ventilation fans and face drainage pumps.
• 0.66/1.14 kV MYP mobile power cables for shuttle cars, stage loaders, scraper conveyors and gate-end box interconnections.
• 1.9/3.3 kV MYPT metallic-screened power cables for high-power roadheaders, continuous miners, feeder-breakers and longwall pump stations.
• Underground roadway cable hooks, monorail festoon loops and tension-controlled cable handlers requiring a minimum dynamic bending radius of 6 × D (MYP) to 10 × D (MYPT).

When cross-referencing Chinese MT 818 coal mining designations with DIN VDE standards, review these pages: Mining Cable Designation Cross-Reference (for international equivalences across VDE, NEMA/ICEA, AS/NZS, and MT 818 mining cable families); (N)SSHCGEWÖU-V Cable 0.6/1kV for Coal Mine Cutters and Drills (for DIN VDE 0250-812 0.6/1 kV reinforced trailing cables on underground cutters and drills). Verify earth-fault protection compatibility and outer chloroprene sheath tear resistance.

Specifications

Continuous current ratings are stated for +90 °C conductor temperature at +25 °C ambient underground air in free air per MT/T 818 engineering tables.

Nominal outside diameters and approximate cable weights are typical production values; verify gland clamping range against the nominal min–max outside diameter interval.

MA certificates MIA230337, MIA230341 and MIA230344 are held by Jiangsu Tebaoli'er Special Cable Co., Ltd. (江苏特宝利尔特种电缆有限公司) and apply solely to coal mines in China for the exact listed models and cross-sections.

Standards

IEC 60228 Conductors of Insulated Cables Standard Reference