Shielded rubber sheathed flexible cable for coal mining machine, price | quotation for shielded rubber sheathed flexible cable for coal mining machineThis standard refers to IEC 227-1-1979 "Polyvinyl chloride cables with rated voltage of 450/750V and below" and IEC 502-1983 "Extruded solid insulated power cables with rated voltage of 1-30KV".
Topic Content and Scope of Application
This standard is applicable to the flexible polyvinyl chloride plastic for wires and cables (hereinafter referred to as polyvinyl chloride cable material) made by mixing, plasticizing, and granulating polyvinyl chloride resin as the main raw material, adding plasticizers, stabilizers, and other additives.
2. Reference standards
GB 1040 Plastic Tensile Test Method
GB 1408 Solid Electrical Insulation Materials - Test Methods for Power Frequency Breakdown Voltage, Breakdown Strength, and Voltage Endurance
GB 1409 Test method for relative permittivity and dielectric loss tangent of solid electrical insulation materials at power frequency, audio frequency, and high frequency
GB 1410 Solid Electrical Insulation Materials - Test Methods for Insulation Resistance, Volume Coefficient of Resistance, and Surface Coefficient of Resistance
GB 5470 Test Method for Impact Brittle Temperature of Plastics
Shielded rubber sheathed flexible cable for coal mining machine, price | quotation for shielded rubber sheathed flexible cable for coal mining machineMY Mining Cable Insulation Process
Technical requirements: 1. The conductor structure adopts the current universal conductor structure, ensuring that the DC resistance of the conductor at 20 ℃ is qualified before use; 2. Both the power wire core and the ground wire core are extruded with rubber insulation layer. The extrusion of the wire core requires a smooth, round, and tight appearance, without any adverse phenomena such as vulcanized rubber, burnt particles, bamboo joints, and explosion (breakage); 3. The average thickness during insulation extrusion should meet the nominal thickness, and the thickness of the thin points should meet the process requirements. The outer diameter of the wire core should be controlled within the process range; 4. The extrusion temperature control can be controlled and adjusted according to the actual state of the equipment, but the process temperature should be used as a reference; 5. Mold matching (mold core, mold sleeve) can be used as a reference according to the process. The actual mold should be flexibly selected based on the measured outer diameter of the conductor and the insulation control outer diameter; 6. The spark detection voltage should be strictly set according to the process requirements.