Before diving into the different models of mineral fireproof cables, it's important to first get a clear grasp of what they are. Shanghai Zheshang Special Cables is here to give you a full breakdown of these cables-covering their basic concept, performance features, application areas, and available models. Concept People often use the terms "mineral-insulated cables" and "fire-resistant cables" interchangeably, but it's crucial to tell these two apart. While both offer some level of fire protection, they differ in several key aspects: structure, power supply capability, and installation methods. In this section, we'll focus specifically on mineral-insulated cables.
A mineral-insulated cable consists of copper conductors wrapped in a copper sheath, with magnesium oxide powder serving as the inorganic insulating material that separates the conductors from the sheath. This magnesium oxide integrates tightly with both the metal core and the sheath, forming a solid, unified structure.
Before knowing the models of mineral fireproof cables, we need to first understand what mineral fireproof cables are. Shanghai Zheshang Special Cables will provide a comprehensive introduction to the concept, performance characteristics, application fields and models of mineral fireproof cables. Concept
We often refer to mineral-insulated cables as fire-resistant cables. Here, it is important to distinguish the difference between mineral-insulated cables and fire-resistant cables. These two types are often confused by people. They both possess the following performance characteristics that are not possessed by mineral-insulated cables:
Fire resistance: Since the insulating material of mineral-insulated cables is an inorganic material - magnesium oxide, it does not burn or assist in combustion, thus having certain fire resistance. The continuous operating temperature of mineral-insulated cables is 250℃, and they can provide continuous power supply for 150 minutes at 950℃.
High current-carrying capacity: Mineral-insulated cables use magnesium oxide powder materials, which have a better conductivity coefficient than plastics. Therefore, compared to conductors with the same cross-section, they have a larger current-carrying capacity. They can also withstand certain overloads.
Corrosion resistance, resistance to mechanical damage: The copper sheath of mineral-insulated cables has strong corrosion resistance and does not require additional corrosion-resistant devices. It is sturdy and durable and can withstand severe mechanical damage.
Long lifespan: The material structure of inorganic substances makes mineral-insulated cables last longer. They can be used for up to 250 years in an environment of 250℃.
Application fields Mineral-insulated cables are mainly used in industries such as petrochemicals, airports, ships, tunnels, offshore oil platforms, steel and metallurgy, aerospace, high-rise buildings, shopping centers, parking lots, etc. Functionally, they are mainly applied to general lighting, power transmission lines, control lines, equipment lines, oil pump lines, and lines in potentially dangerous
Model number
The main models of mineral-insulated cables are as follows:
BTTQ Lightweight Copper Core Copper Sheathed Mineral Insulated Cable
BTTVQ Lightweight Copper Core Copper Sheathed Polyvinyl Chloride Outer Sheathed Mineral Insulated Cable
BTLY Copper Core Isolated Flexible Mineral Insulated Fireproof Cable
BTTZ Heavy-duty Copper Core Copper Sheathed Mineral Insulated Cable
BTTVZ Heavy-duty Copper Core Copper Sheathed Polyvinyl Chloride Outer Sheathed Mineral Insulated Cable
YTTW Metal Sheathed Inorganic Mineral Insulated Flexible Fireproof Cable
HFTGB Copper Core Ceramicized Insulated Metal Sheathed Flexible Mineral Insulated Cable
