Metal Shielded Coal Shearer Rubber Cable

Product Model: MCPT, MCPTJ.

Metal Shielded Coal Shearer Rubber Cable is a flexible rubber-sheathed mining cable for coal shearers. The supplied product information references MT/T 818.4-2009 and covers power supply and control signal transmission in underground coal-mining applications. Its construction combines a multi-strand tinned oxygen-free copper conductor, special rubber insulation, copper-wire braided shielding and a high-strength rubber outer sheath for working conditions involving repeated movement, dragging and bending.

Product Specification, Dimensions and Technical Parameter Table

Application Scenarios

1. Fully-Mechanized Mining Faces in Large and Medium-Sized Underground Coal Mines

Metal Shielded Coal Shearer Rubber Cable can be used for power and control connections associated with coal shearers and other mobile mining equipment. Its flexible conductor and rubber-sheathed construction are intended for installations where the cable is repeatedly moved during equipment operation.

2. High-Gas and Outburst-Hazardous Coal Mines

Underground mines with specific gas or explosion-control requirements need cable constructions that match the applicable mining safety regulations. Cable selection should consider the mine classification, equipment voltage, flame-retardant requirements and the certificates or test documents required for project acceptance.

3. Mobile Connections Between Underground Substations and Coal Shearers

Connections between mobile substations and coal shearers can involve relatively long cable runs together with repeated dragging, bending and twisting. The flexible conductor construction is intended for this type of mobile power-supply arrangement, while the installation should remain within the specified mechanical limits.

4. Wet Underground Areas with Water Spray and Mechanical Impact

Water spray, dust and falling gangue can place additional mechanical and environmental demands on the cable sheath. The specified high-strength rubber sheath provides resistance to wear, oil, impact and dragging, making sheath condition an important consideration for underground installations exposed to these conditions.

5. Coal-Mine Reconstruction and Automated Mining Systems

For mining projects involving variable-frequency equipment, monitoring circuits or other electrical control systems, the metal shielding layer can help reduce the effect of electromagnetic interference on control and signal circuits. The shielding arrangement and control-core configuration should be matched to the connected equipment and grounding method.

Practical Industry Problems Solved

1. Electromagnetic Interference Around High-Power Mining Equipment

High-power electrical equipment can generate electromagnetic interference that affects nearby monitoring and control circuits. The copper-wire braided metal shield provides a defined shielding layer, with the supplied specification indicating a coverage rate of ≥90%. Cable grounding and installation conditions should also be considered when evaluating the overall shielding performance.

2. Mechanical Stress from Repeated Dragging and Bending

Coal shearer cables are exposed to movement during equipment operation, which can place repeated mechanical stress on the conductor, insulation and sheath. The multi-strand flexible copper conductor and rubber construction are intended to accommodate this type of movement. Actual bending performance should be assessed using the applicable test method and installation requirements rather than an unsupported fixed cycle-life claim.

3. Flame-Retardant Requirements for Underground Mining

Flame-retardant performance is an important part of cable selection in underground coal mines. The supplied technical data references MT 386 for the flame-retardant grade. For a specific mine project, the required safety certification and test documentation should be confirmed against the actual cable model and application.

4. Sheath Protection in Wet and Mechanically Demanding Conditions

Water spray, dust, gangue impact and repeated dragging can contribute to sheath wear during underground operation. The specified outer sheath is described as wear-resistant, oil-resistant, impact-resistant and drag-resistant, providing protection for the cable structure under the corresponding working conditions.

5. Control and Monitoring Requirements

Some cable configurations combine power cores with control cores to accommodate the electrical and monitoring requirements of mining equipment. Where monitoring or protection functions are required, the actual core arrangement and connection method should be confirmed with the equipment manufacturer or electrical system designer.

6. Verification of Technical Parameters and Mining Documentation

Mining projects may require verification of cable standards, electrical parameters, flame-retardant performance and safety-related documentation. Product specifications, test reports and applicable certificates should correspond to the actual model, voltage rating and cable configuration supplied for the project.

Comprehensive Product Advantages

1. Traceable Product and Inspection Information

Qiancheng can provide product identification and relevant production or inspection documentation according to project requirements. For mining projects subject to formal inspection or acceptance, the documentation should be checked against the actual cable model, specification and production batch.

2. Controlled Cable Construction

The conductor, rubber insulation, metal shielding and outer sheath each contribute to the cable's electrical and mechanical characteristics. Maintaining control over these production stages helps keep the finished cable consistent with the specified construction. Electrical and mechanical inspection items can be arranged according to the applicable product requirements.

3. Construction Adapted to Mobile Mining Equipment

The combination of a multi-strand copper conductor, rubber insulation, braided metal shield and high-strength rubber sheath addresses several requirements associated with mobile coal-mining equipment. These include repeated movement, mechanical contact, electrical shielding and environmental exposure underground.

4. Multiple Voltage and Conductor Specifications

The supplied product range covers conductor cross-sections from 25mm² to 150mm² and rated voltages of 0.66/1.14kV and 1.9/3.3kV. Power-core and control-core configurations can be selected according to the equipment connection and cable model. Quotation and production details can be confirmed from the required voltage, conductor size, core structure, length and installation conditions.

5. Technical Documentation for Mining Projects

Depending on project requirements, technical documents may include product specifications, inspection records, test reports and applicable mining safety certificates. For export orders or formal mine acceptance, the required document list should be confirmed before production so that the supplied documents correspond to the final cable specification.

Q&A

1. What Standard Does Your Metal Shielded Coal Shearer Rubber Cable Comply With?

The supplied product information references MT/T 818.4-2009 for the MCPT and MCPTJ models. The applicable standard, certification and test documentation should be confirmed according to the required voltage and cable configuration.

2. What Conductor Sizes and Voltage Ratings Are Available?

The supplied specification covers conductor cross-sections from 25mm² to 150mm² and rated voltages of 0.66/1.14kV and 1.9/3.3kV. Power-core and control-core combinations can be selected according to the equipment and circuit requirements.

3. Where Is This Mining Cable Typically Used?

It is intended for underground coal-mining equipment and related power or control connections, particularly installations involving repeated dragging, bending, twisting, moisture, dust and mechanical impact.

4. What Is the Function of the Metal Shielding Layer?

The copper-wire braided shield provides electromagnetic shielding around the cable cores. The supplied technical specification indicates a shielding coverage of ≥90%. Proper grounding and installation are also relevant to the effectiveness of the shielding system.

5. How Should the Cable Be Evaluated for Repeated Bending?

The multi-strand copper conductor and rubber construction are intended for flexible mobile applications. Bending radius, movement frequency, dragging method and installation conditions should be checked against the applicable product specification and test requirements.

6. Can Technical Documents Be Provided for Mining Projects?

Technical specifications, inspection records and applicable certification or test documents can be discussed according to the project requirements. For export orders or formal mine acceptance, the required documentation should be confirmed before order placement.