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About Us

Shandong Jinyu Cable Co., Ltd.

Shandong Jinyu Cable Co., Ltd. produces power cables, high-voltage cables, overhead cables, control cables, flame-retardant and fire-resistant cables, low-smoke and halogen-free cables and other products.

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HIGH QUALITY

Trust Seal, Credit Check, ISO and Supplier Capability Assessment. company has strictly quality control system and professional test lab.

DEVELOPMENT

Internal professional design team and advanced machinery workshop. We can cooperate to develop the products you need.

MANUFACTURING

Advanced automatic machines, strictly process control system. We can manufacture all the Electrical terminals beyond your demand.

100% SERVICE

Bulk and customized small packaging, FOB, CIF, DDU and DDP. Let us help you find the best solution for all your concerns.

Mastering Common Cable Models: Essential Usage Tips for Electrical Projects

Mastering Common Cable Models: Essential Usage Tips for Electrical Projects In electrical installations and engineering projects, selecting the right cable model is crucial for safety, efficiency, and long-term reliability. With a wide range of cable types available, understanding their characteristics and application scenarios can help you make informed decisions. This guide breaks down popular cable models and shares practical tips for optimal usage. 1. RVV (Round Sheathed Flexible Cable) Characteristics: Structure: Multi-core copper conductors with PVC insulation and an outer PVC sheath. Flexibility: High bend radius tolerance, ideal for movable equipment. Voltage Rating: Typically 300/500V or 450/750V. Typical Applications: Home appliances (washing machines, vacuum cleaners) Lighting systems in commercial spaces Temporary power connections at construction sites Usage Tips: Current Capacity: Calculate load requirements first—undersized cables may overheat. A 2.5mm² RVV can handle up to 20A safely. Environmental Protection: Avoid exposing RVV to direct sunlight or extreme temperatures; use conduit for outdoor runs. Installation: Leave extra slack for movable devices to prevent strain on connectors. 2. BV (Single-core PVC Insulated Cable) Characteristics: Structure: Single copper conductor with PVC insulation (no outer sheath). Rigidity: Stiff design for fixed wiring. Voltage Rating: 450/750V (standard for household use). Typical Applications: Residential wiring (power circuits, lighting) Internal cabling in switchboards Fixed industrial machinery connections Usage Tips: Color Coding: Follow local standards (e.g., brown for live, blue for neutral, 黄绿 for earth) to ensure compliance and safety. Conduit Installation: Always use PVC conduit or cable trays to protect BV cables from physical damage and moisture. Termination: Strip insulation carefully to avoid conductor nicks; use proper connectors (e.g., wire nuts or terminal blocks). 3. YJV (Cross-linked Polyethylene Insulated Cable) Characteristics: Structure: Copper/aluminum conductors with XLPE insulation and PVC sheath. High Temperature Resistance: Can operate up to 90°C, suitable for high-load environments. Durability: Excellent chemical and moisture resistance. Typical Applications: Power transmission in industrial plants Underground power lines High-rise building main distribution systems Usage Tips: Soil Burial: When installing underground, use additional HDPE ducting for mechanical protection and easier future maintenance. Temperature Derating: Adjust ampacity ratings based on ambient temperature—consult manufacturer tables for deration factors. Jointing: Use heat-shrinkable sleeves or pre-molded connectors to ensure waterproof and high-integrity joints. 4. KVV (Control Cable) Characteristics: Structure: Multi-core conductors (2-61 cores) with PVC insulation and sheath. Low Voltage: Rated for 450/750V, designed for control signals. Flexibility: Moderate flexibility for fixed or semi-fixed installations. Typical Applications: Industrial control systems (PLC connections) Building automation (security systems, HVAC controls) Instrumentation in power plants Usage Tips: Core Separation: Label each core clearly during installation to simplify troubleshooting (use numbering or color-coded cores). Noise Reduction: For signal-sensitive applications, choose KVV with braided shield (KVVP) to minimize electromagnetic interference. Bending Radius: Maintain a bend radius of 6-10x cable diameter to avoid insulation damage. 5. RVVP (Shielded Flexible Cable) Characteristics: Structure: Multi-core conductors with PVC insulation, braided copper shield, and outer PVC sheath. EMI Protection: Shielding reduces interference in signal transmission. Flexibility: High mobility suitable for moving machinery. Typical Applications: Audio/video systems (microphones, cameras) Industrial automation (encoder/decoder connections) Medical equipment (sensitive diagnostic devices) Usage Tips: Grounding the Shield: Connect the shield to a single point ground to avoid ground loops—use metal connectors with good conductivity. Cable Length: Keep signal cables as short as possible; for long runs, consider twisted-pair RVVP for better noise immunity. Jacket Thickness: Check the shield coverage percentage (ideally ≥90%) for critical applications. Key Considerations for Cable Selection Environmental Factors: Temperature (indoor/outdoor, high-heat zones) Moisture exposure (IP rating requirements) Chemical resistance (corrosive environments) Electrical Parameters:

2025-01-11

What exactly are wires and cables?

Wires and cables are wire products used to transmit electrical energy, information, and realize electromagnetic energy conversion. They are like "lifelines", transmitting the electricity generated by power plants to thousands of households, allowing electrical equipment to operate; they are also like "highways" of information, allowing telephone and network signals to be transmitted quickly, allowing us to be closely connected with the world. In daily life, people often confuse "wires" and "cables", but in fact there is no very strict boundary between them. Generally speaking, products with a small number of cores, small product diameters, and simple structures are called wires, such as the single-core or double-core wires commonly used in our homes to connect lamps and sockets; those without insulation are called bare wires, which are mostly used in some special industrial scenes or outdoor overhead lines; and other more complex ones are classified as cables, such as those with multi-core, multi-layer insulation and sheaths, which are used for power supply to large buildings and underground power transmission in cities. Conductors with larger cross-sectional areas (greater than 6 square millimeters) are often called large wires, while those with smaller cross-sectional areas (less than or equal to 6 square millimeters) are small wires, and insulated wires are also called cloth wires.

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