Control CABLE 450/750V Flexible Shielded Industrial Automation Control Wiring Wire

PRODUCT DESCRIPTION

It is suitable for overhead power lines with AC rated voltage of 35kV andbelow. It is used in cities and towns, high-rise buildings, forest areas and otherplaces with high safety requirements.

Usage features:

• Rated voltage: 1 kV and 10 kV.
• Operating temperature: For PVC and polyethylene insulation, the temperature shall not exceed 70 °C; for cross-linked polyethylene insulation, the temperature shall not exceed 90 °C, with a short-circuit duration not exceeding 5 seconds. Maximum temperature of cable conductors: 160°C for PVC insulation, 150°C for polyethylene insulation, and 250°C for cross-linked polyethylene insulation; the cable laying temperature must not be lower than -20°C.

Cable Specifications

Applications:

Control cables (typically rated at 450/750 V or below) are primarily used to transmit control commands, measurement signals and status feedback; they do not carry high-power electrical energy. They are widely used across industries such as manufacturing, energy, construction, transport and specialised environments.

I. Industrial Automation (Core Sector)
Smart Manufacturing: Connections between PLCs, variable frequency drives, sensors, actuators and robots; interlocking of equipment on automotive and electronics assembly lines, speed regulation and workstation signal exchange.
Process Industries: DCS systems in the petroleum, chemical, metallurgical and building materials sectors; valve control and temperature, pressure and flow signal feedback; flame-retardant and armoured cables designed for high-temperature and explosion-proof environments.
Machinery and Equipment: Control circuits and emergency stop/interlock signal transmission for CNC machine tools, cranes, textile machinery and packaging machinery.
II. Energy and Power
Power Stations / Substations: Connection of high-voltage switches, current transformers, relay protection and control panels; circuit breaker operation, unit monitoring, and transmission of automated telecontrol signals.
Power Distribution Systems: Signal transmission for smart distribution cabinets, ring main units, electricity meters and terminal controls.
III. Construction and Buildings
Building Automation (BA): Centralised control and interlocking of HVAC (air conditioning/ventilation), lighting, water supply and drainage, and lifts/escalators.
Fire Protection Systems: Control and interlocking of fire alarms, sprinkler pumps, smoke extraction fans and emergency lighting (commonly using fire-resistant, low-smoke, halogen-free types).
Security and Low-Voltage Systems: Signal and control connections for CCTV cameras, access control, alarm control panels and car park systems.
IV. Transport
Rail Transport: Control of metro/high-speed rail carriages (doors, lighting, air conditioning), signalling systems, traction control and connections to on-board equipment.
Marine/Offshore Engineering: Engine room control, navigation, power monitoring, deck machinery; Oil-resistant, waterproof, flame-retardant, marine-grade cables.
Airports / Ports: Control of baggage sorting systems, boarding bridges, loading/unloading equipment, signal lights and navigation facilities.
V. Specialised and Public Facilities
Water Treatment / Environmental Protection: Connection of pumps and valves, chemical dosing systems, monitoring instruments and PLCs in sewage and water treatment plants; waterproof, corrosion-resistant, armoured cables.
Mining / Tunnels: Underground control, ventilation, drainage, lighting; explosion-proof, flame-retardant, high-tensile, armoured cables.
Medical / Laboratories: CT, MRI, precision instrument control and operator panel signals; high-shielding, low-interference, medical-grade cables.

FAQ

Q1: What is the primary purpose of control cables? How do they differ from power cables?
A1: Their primary purpose is to transmit control commands, measurement signals and status feedback; they are not designed to carry high-power electrical energy. The key difference between control cables and power cables is that power cables are designed to transmit electrical energy (such as in power supply lines), whereas control cables are designed for signal transmission (such as equipment interlocking commands). Control cables typically have a rated voltage of 450/750 V or lower and are available in smaller gauges.

Q2: How can one quickly select the appropriate control cable type for different applications?
A2: Select based on application priority: KVV for general indoor use; KVVP/KYJYP (shielded types) for environments with high levels of interference (e.g. frequency converters, precision instruments); KVVR/KVVRP (flexible types) for mobile or drag-chain applications (e.g. machine tools, production lines); For fire safety/environmental protection applications, use WDZ-KYY (low-smoke, halogen-free, flame-retardant) or fire-resistant types; for special environments (explosion-proof, waterproof, corrosion-resistant), use the corresponding specialised armoured or special-purpose types.
Q3: What does the rated voltage of 450/750V for control cables mean?
A3: 450V is the rated voltage between conductors, whilst 750V is the rated voltage between a conductor and earth. This voltage rating meets the control signal transmission requirements for the vast majority of industrial, construction and transport sectors, and is suitable for low-voltage equipment control circuits.
Q4: What is the purpose of shielded control cables (such as KVVP)? In which scenarios are they mandatory?
A4: Their purpose is to resist external electromagnetic interference and prevent signal distortion (such as accidental equipment triggering or signal interruption). Mandatory applications include: smart manufacturing (PLCs, variable frequency drives and associated equipment), security surveillance, precision instruments (medical and laboratory equipment), and rail signalling systems – all scenarios where high signal stability is required.

Q5: What is the difference between flexible control cables (KVVR) and standard control cables (KVV)?
A5: The key differences lie in flexibility and intended applications: KVV cables are designed for fixed installation, offer moderate flexibility, and are suitable for indoor fixed wiring (such as inside distribution boards or within walls); KVVR is a flexible type, with conductors typically consisting of multiple strands of fine copper wire twisted together; it is bendable and resistant to dragging, making it suitable for mobile equipment (such as cranes, drag-chain machine tools, and interlinked sections of production lines).
Q6: Why are low-smoke, halogen-free, flame-retardant or fire-resistant types prioritised for control cables used in fire protection systems?
A6: Fire safety scenarios are high-risk environments. Low-smoke, halogen-free, flame-retardant types (such as WDZ-KYY) produce minimal smoke and no toxic gases when burning, thereby reducing the risk of personnel poisoning and obstruction of visibility; fire-resistant types can maintain power supply and signal transmission for a certain period during a fire, ensuring the normal operation of fire safety equipment (such as sprinkler pumps, smoke extraction fans and alarm systems), and buying time for evacuation and rescue.
Q7: What specific requirements must control cables meet for special environments such as ships and mines?
A7: For ships and offshore engineering, cables must be oil-resistant, waterproof, flame-retardant and hold marine-grade certification to withstand seawater corrosion and engine room oil contamination. For mines and tunnels, cables must be explosion-proof, flame-retardant, high-tensile and armoured to suit the damp, dusty and impact-prone conditions underground, thereby preventing safety incidents caused by cable damage.