How do the waterproof and moisture-proof properties of mineral insulated cables ensure the safety of power transmission?

1. Material and structural design
Insulation layer materials: The insulation layer of mineral insulated cables uses specially treated mineral compounds, such as inorganic materials such as magnesium oxide. These materials not only have excellent fire resistance, but also have good waterproof and moisture resistance. They are tightly wrapped around the conductor to form a solid barrier that effectively prevents the intrusion of water and moisture.
Outer sheath: The outer sheath of the cable is usually drawn from a seamless copper tube, and this structure further enhances the waterproof and moisture-proof ability of the cable. The copper tube has excellent corrosion resistance and mechanical strength, can resist the erosion of the external environment, and protect the internal insulation layer from damage.
Sealing: The joints and end caps of mineral insulated cables are also carefully designed to ensure good sealing. This sealing design can effectively prevent moisture and moisture from entering the cable through the joints, keeping the internal environment of the cable dry and stable.
2. Waterproof and moisture-proof effect
Moisture-proof performance: Due to the dual protection of the insulation layer and the outer sheath, mineral insulated cables can still maintain stable electrical performance in a humid environment. Water and moisture cannot penetrate into the cable, thus avoiding problems such as electrical performance degradation or short circuit caused by humidity changes.
Waterproof performance: Under appropriate conditions (such as a simple water shower test), mineral insulated cables show good waterproof performance. Its compact structure and high-quality materials can effectively resist the impact and penetration of water flow, ensuring that the cable can still maintain normal operation when it is immersed in water or encounters water showers for a short time.
3. Application scenarios and advantages
Special environment applications: Due to the excellent waterproof and moisture-proof properties of mineral insulated cables, it is particularly suitable for humid and watery environments. For example, in special occasions such as offshore power supply, mines, and oil fields, mineral insulated cables can transmit power stably and reliably, providing strong guarantees for the normal operation of equipment.
Long-term stability: The waterproof and moisture-proof properties of mineral insulated cables also help to extend the service life of cables. In humid environments, ordinary cables are prone to aging, insulation degradation, and even short-circuit damage due to moisture. Mineral insulated cables can resist such damage and maintain long-term stable electrical performance and service life.