500V mining lighting cable MYQ-3 * 1.5+1 * 1.0

500V mining lighting cable MYQ-3 * 1.5+1 * 1.0

Production process and technology
The insulation resistance between insulated main cores and between main cores and ground wire shall not be less than 160M Ω· km when converted to+20 ℃.
Product standard: MT818.9-1999.
It consists of 2-12 main core wires, which are extruded with black chlorinated polyethylene rubber sheath or black chloroprene rubber sheath after cable formation.
Conductive core: Made of soft copper wire, its performance complies with GB/T3956-1997.
Insulation: XJ-00A rubber according to GB7594.2-1987 is used.
Core identification: Insulation color separation identification is used for four cores and below, and printed number identification is used for four cores and above.
Cable formation: Twist in the right direction to form a cable.
Sheath: XH-01A rubber according to GB7594.7-1987 is used.
The ordinary UYQ finished cable has non flame retardant properties, while the flame retardant UYQ finished cable meets the requirements of MT386-1995.
Cable marking: The surface of the cable is printed with the model, voltage, specifications, and manufacturer's name.

MYQ Mobile Lightweight Flexible Cable for Coal Mines
GB12972.9-91 MT818.9-1999
This product is suitable for lightweight mobile rubber sheathed flexible cables used in coal mines with rated voltage of 0.3/0.5KV and below.
Cable characteristics
The rated voltages U0/U are 0.3/0.5kV respectively.
The long-term allowable working temperature for cable conductors is 65 ℃.
The small bending radius of the cable is 6 times the diameter of the cable.

500V mining lighting cable MYQ-3 * 1.5+1 * 1.0Due to the close relationship between wire and cable products and the lives of consumers, their quality and safety directly affect the personal and property safety of consumers. Therefore, it is very important to choose wire and cable correctly:
1> Check the "CCC" certification mark. Therefore, wire and cable products are national mandatory safety certification products, and all production enterprises must obtain the "CCC" certification from the China Electrical Products Certification Committee, obtain the "CCC" certification mark, and have the "CCC" certification mark on the certificate of conformity or product.
2> Refer to the inspection report. As a product that affects personal and property safety, wires and cables have always been listed as a key focus of government supervision and inspection. Regular manufacturers are subject to periodic inspections by supervisory departments. Therefore, the seller should be able to provide inspection reports from the quality inspection department, otherwise, the quality of the product will lack basis.
3> Pay attention to packaging. The packaging of wire and cable products is the same as other products. Large and medium-sized formal enterprises that produce products that meet national standards pay great attention to product packaging. When making a purchase, pay attention to the exquisite packaging, clear printing, complete model specifications, factory name, and address.
4> Judging from its appearance, the product has a smooth and round appearance with uniform color. Wire and cable enterprises that meet national standard requirements strictly control the selection of raw materials, production equipment, and production processes in order to improve product quality and ensure that products meet national standard requirements. So, the appearance of the produced wire and cable products meets the standard requirements: smooth and round, with uniform color. The appearance of inferior products is rough and dull. For rubber insulated flexible cables, it is required that the appearance be round and the sheath, insulation, and conductor be tight and not easily peeled off. However, inferior products have rough appearance, high ellipticity, and low insulation strength of the sheath, which can be easily removed by hand.
5> Look at the conductor, the conductor has luster, and the DC resistance, conductor structure size, etc. meet the requirements of national standards. Products of wires and cables that meet national standards, whether made of aluminum or copper conductors, are relatively bright and free of oil stains. Therefore, the DC resistance of the conductors * meets national standards, has good conductivity, and high safety.
6> Measure the length. Length is the main intuitive method to distinguish between products that meet national standards and those that are of poor quality. When making a purchase, do not be tempted by cheap prices. Choose wires and cables with a length of 90m or 80m, or even without length markings. The length must meet the standard requirement of 100 ± 0.5m, which is based on a standard of 100 meters and allows for *. 5 meters.
7> In addition, when purchasing wires and cables, the purpose should also be considered. Usually, the wire current is calculated based on the power of the electrical appliance carried, and then the wire specifications are selected according to the current size.