DL-17
Features and uses:
Fire-resistant cable (mineral cable) is a cable that uses magnesium oxide as the insulating material. It is referred to as MI cable abroad, and is commonly known as "mineral insulated cable or fire-resistant cable" in China. It has the advantages of high temperature resistance, fire prevention, explosion-proof (continuous long-term operation at 250°C ambient temperature, and 30-minute short-term operation at 1000°C extreme state).
DL series are fireproof cable (mining cable) grade magnesium oxide products. According to various electrical insulation requirements, they are divided into medium and high grade specifications. As the main insulation and high temperature resistant filling material, it is suitable for different types of flexible and rigid fireproof cables. , The production of mineral insulated cables can work normally in a high temperature environment of up to 1300 ℃, and have a certain degree of moisture resistance. Different particle composition can be designed according to the specific application of the customer. Note: (Refer to American ASTM E1652-03 standard)
Type: Cable Grade Magnesium Oxide
Features and uses:
Fire-resistant cable (mineral cable) is a cable that uses magnesium oxide as the insulating material. It is referred to as MI cable abroad, and is commonly known as "mineral insulated cable or fire-resistant cable" in China. It has the advantages of high temperature resistance, fire prevention, explosion-proof (continuous long-term operation at 250°C ambient temperature, and 30-minute short-term operation at 1000°C extreme state).
DL series are fireproof cable (mining cable) grade magnesium oxide products. According to various electrical insulation requirements, they are divided into medium and high grade specifications. As the main insulation and high temperature resistant filling material, it is suitable for different types of flexible and rigid fireproof cables. , The production of mineral insulated cables can work normally in a high temperature environment of up to 1300 ℃, and have a certain degree of moisture resistance. Different particle composition can be designed according to the specific application of the customer. Note: (Refer to American ASTM E1652-03 standard)
Chemical index
| Main chemical composition% | |||||
| MgO | SiO2 | CaO | Fe2O3 | Al2O3 | LOI |
| ≥95 | ≤1.9 | ≤1.5 | ≤0.5 | ≤0.9 | ≤0.20 |
Physical index
| Tap density T.D. （g/cm3） | Flow rate （F.R s/100g） | ||||||
| 2.10-2.38 | 175±20 | ||||||
| Mesh | +40 | +60 | +80 | +150 | +200 | +325 | -325 |
| Particle size (㎛) | +425 | +250 | +180 | +110 | +75 | +45 | -45 |
| Content(%) | —— | ≤0.5 | 30±10 | 20±10 | 12±5 | 10±8 | 5±5 |
Packing: 25KG carton or woven bag, or according to customer requirements.
Security and storage:
Cable-grade magnesium oxide powder is non-toxic and has a small amount of dust. It is recommended to wear masks and gloves during use. The product should be stored in a dry place, and it is recommended to use it within 12 months after leaving the factory.
Advantages of fireproof cable:
1. Large current-carrying capacity and strong overload capacity: Compared with plastic cables of the same cross-section, the current-carrying capacity of magnesium oxide cables can be increased by more than one cross-section level. At the same time, it can withstand considerable overload, and its overload capacity can reach more than 100 times the normal carrying current.
2. High mechanical strength: First, the special material determines the high mechanical strength, and secondly, when the cable is flattened by external force to 2/3 of the original cable diameter, the current-carrying surface can still be kept unchanged.
3. Small size, light weight, long life: Compared with ordinary cables, the volume is reduced by 60% and the weight is reduced by 30%. Because of its strong corrosion resistance and high mechanical strength, this product has the characteristics of long life, and its life span is more than 100 years.
4. Good grounding performance: The copper sheath can provide good low grounding resistance, play a grounding role and save a separate grounding core.
