Information - ZMS Cable Manufacturer

Protection Measures Against Lightning in Aerial Cables

22/02/202313/04/2022

as a natural phenomenon, lightning is generated for various reasons. During the frequent annual lightning season, power lines can be significantly affected.

Las 10KV overhead lines are subject to direct and induced lightning, that can generate very high voltages and cause surges in overhead cables.

The lightning surge is usually much higher than the allowable voltage of the line. The lack of protection measures against lightning can easily cause it to strike the insulation., which can lead to fractures at weak points. Serious damage to electrical equipment leads to unnecessary safety accidents.

Common Defects in PVC Cable Material

22/02/202308/04/2022

PVC cable material is manufactured from polyvinyl chloride as the base resin., to which stabilizers are added, lubricants and inorganic fillers. It is prepared by mixing, kneading and extruding.

Although this material has mediocre properties and is not environmentally friendly enough, it is less expensive and the process is simpler. So, PVC remains one of the most widely used cable materials.

Methods to Check the Quality of Coaxial Cables

29/09/202402/04/2022

Coaxial cable is a cable that consists of a copper conductor, an isolation, a woven net and an outer cover. It can be used for transmission of analog and digital signals, including cable tv, long distance telephony, local area networks of computers, etc.

The quality of the coaxial cable has a major impact on the quality of the signal transmission. The following are ways to check the quality of coaxial cables.

What is the difference between control cable and power cable?

22/02/202328/02/2022

The cables are divided into power cables, control wires, signal wires (communication cables)

Power cable and control cable are the common export cable type. Control cables belong to electrical equipment cables, and power cables are two of the five main cable categories.

Advantages and Disadvantages of Mineral Insulated Cables

23/03/202321/02/2022

1. The price is relatively high, from 2 a 5 times higher than that of ordinary flame retardant cable.

This is the same cross section, but mineral insulated cable (cable MICC) has a great capacity overload, so if it has the same current carrying capacity, the cross section is reduced and the cost is reduced.

Naturally, it will be reduced, and considering the cost of subsequent replacement and maintenance, in fact, the cost of both is similar, but the initial investment will be relatively large.

But the service life of mineral insulated cable is 50-100 years, BTTZ life is even more than 100 years. Cables typically last more than 20 years.

Why we choose TR-XLPE as insulation of Medium Voltage power cable?

22/02/202310/02/2022

Power cable is the longest and most demanded cable product in power transmission, distribution and other essential electrical transfer lines.

Tubular water trees are water trees developed from insulating screens or conductive screens which are water trees from impurities or other defects in the insulation that develop radially towards the insulating screen and the conductive screen.

— ZMS Cable Business Unit

Electrical cables security and firefighting

22/02/202301/12/2021

In recent years, A variety of electric cables fireproof, fire resistant and high temperature resistant, have achieved certain results.

These electrical cables do not spontaneously burn, have a certain flame retardant role, in fire they can hold a certain amount of energy, communication time.

But these cables also have a great shortage, since the cable in the fire will emit toxic gases and smoke. affecting vision, etc., in the evacuation and rescue of personnel to buy time and at the same time bring fatal injuries to personnel.

Performance of power cables

24/02/202312/10/2021

Electrical properties of power cables

Electric conductivity — Most products require good electrical conductivity, and individual products require a certain range of resistance..

Performance Electrical isolation — insulation resistance, dielectric coefficient, dielectric loss, electrical resistance characteristics, etc.

transmission characteristics — refers to high frequency transmission characteristics, anti-interference characteristics, etc.

Your footprints will be traced by underground fiber optics, he knows?

22/02/202326/07/2021

Experts thought that underground optical cables can intrude on people's privacy.

already in 1999, the us army. UU. He was aware of the special ability of fiber optics to control the behavior of people.

Post Insulators and Suspension Insulators

22/02/202302/02/2021

insulating post: is a special cable insulation control, an electrical material, which can play an important role in the overhead cables of transmission.

In the first days, post insulators were used primarily for electrical poles.

They gradually developed from the end of high-type high-voltage electrical cable connection towers with many suspended insulators., which were usually made of silica gel or ceramic to increase creepage distance. They are called insulators..