The causes and solutions of overheating of wires and cables

When the power cable passes through a certain load current, it will be heated. With the increase of load current, the higher the cable surface temperature is. If it is not managed in time, the consequences can be imagined. For example, PVC cable is considered with core temperature of 70 ℃ as the upper limit, … Read more

On the specifications and standards of wires and cables

01 Plastic insulated conductor 1. Purpose: This product is suitable for fixed laying of power plant with AC rated voltage of 450 / 750V and below. 2. Product standard: GB 5023-95 AAC Cables (wires) for fixed laying of PVC insulated cables (wires) with rated voltage of 450 / 750V and below 3. Features: 1) rated … Read more

Technical requirements of explosion proof combined switch and cable in coal mine

Technical requirements of explosion-proof intelligent vacuum combined switch 1. certificate and certificate with relevant qualification. 2. inspection report of qualified unit inspection. 3. the switch shall be provided with coal safety mark and explosion-proof sign. 4. the switch has explosion-proof and explosion resistance. 5. the altitude is 2000 meters. 6. switch protection is sensitive and … Read more

Requirements for fire protection certification of cables

In order to solve the long-standing problem of the lack of flame retardant classification standards in the AAC Cable industry and the imperfection of the evaluation index dimension in the original flame retardant standard system, the former Sichuan Fire Protection Research Institute of the Ministry of public security organized relevant units to take the lead … Read more

Which is better, copper core or aluminum core?

When it comes to wires and Cables Manufactor, we have to mention the copper and aluminum in their main materials. Then the question comes, what is the difference between copper core and aluminum core wires and cables? Which is better? Let’s get to know about it~ There are several ways to distinguish copper core from … Read more

Today’s copper price and market analysis

Today’s copper price CCMN spot copper price: 71930 yuan / ton, down 400 yuan / ton Mine end plans to expand production, copper may fall on the 26th Abstract: China increased price control and continued to exert pressure. The copper price fell by 48 US dollars overnight. Large copper producers plan to expand production. Recently, … Read more

Cable enterprises should start from small things to ensure safe production

A general manager from a well-known abc cable company publicly told his views on safety production. He said that an employee accidentally fell down at the production site and caused serious injury. The fall was caused by a pool of oil on the ground. The reason why there is oil on the ground of the … Read more