With the continuous development of industry, many new and innovative industries are constantly emerging. Consequently, industrial production inevitably requires the use of power cables, which can be classified into standard cables and specialized cables. Special operations require cables designed for specific applications, which is why specialized cables have their own unique characteristics. One such type is water-cooled cable, which has a hollow core through which water can flow. You may be curious about its working principles, so let's discuss the basics of water-cooled cables.
1. What is Water-Cooled Cable?
Water-cooled cable (commonly known as water cable) is a specialized cable with a hollow core through which water can flow, used for high-current heating equipment. It typically consists of three components: an electrode (cable head), a conductor, and an outer sheath.
Flexible conductor cross-sectional area, in mm²
Ampacity, in A
Rated voltage, in V
Cooling water flow rate, in m³/h
Minimum bending radius, in mm
Geometric mean radius (GMR), in mm
Working water pressure, in MPa
Length, in m
Weight, in kg
II. Water-cooled Cable Principles and Specifications
1) Principle
① Water-cooled cable is a new type of cable characterized by a hollow core through which water can flow. It is generally used as a specialty cable for high-current heating equipment, transmitting high currents at medium and industrial frequencies. It typically consists of an outer sheath, conductors, and electrodes, also known as cable connectors.
② In conventional water-cooled cables, the electrodes are welded together using copper tubes and copper busbars, resulting in a loose connection to the equipment. The conductors are twisted together using bare copper wire, resulting in a large bending radius. The outer sheath is made of ordinary rubber hose, which has a low pressure resistance. The sheath and electrodes are secured with ordinary clamps, resulting in poor sealing and a high risk of water leakage. Therefore, avoid using water-cooling cables of poor quality.
③High-quality water-cooling cables feature electrodes made from solid copper rods that are machined and milled, and the surface is passivated or tinned. The conductors are tinned copper strands or enameled wire, braided using a CNC winding machine, resulting in a small bend radius and high flexibility. The outer sheath is a synthetic rubber tube with a reinforced fabric layer, offering high pressure resistance. Copper clamps are used between the sheath and the electrodes, cold-extruded and tightened using specialized equipment, ensuring a strong seal and preventing water leaks. Therefore, using high-quality water-cooling cables is safer and more reliable.
2) Water-Cooled Cable Specifications
Common water-cooled cable models and specifications are as follows:
WDZA-YJHLY23 Rare Earth High-Speed Iron Aluminum Alloy Power Cable
WDZA-YJHLY235*35WDZA-YJHLY23 Rare Earth High-Speed Iron Aluminum Alloy Power Cable WDZA-YJHLY231*400WDZA-YJHLY23 Rare Earth High-Speed Iron Aluminum Alloy Power Cable WDZA-YJHLY235*50WDZA-YJHLY23 Rare Earth High-Speed Iron Aluminum Alloy Power Cable WDZA-YJHLY231*10
From the above, you can see why water-cooled cables are called special cables. Their functions truly give them special characteristics. In fact, if we pay attention to wires and cables, we will discover that there is a vast amount of knowledge within this field. In the coming years, more types of special cables will surely be introduced to the market, and their role in social development and progress will become increasingly important.
