Standard certified cables ensure power safety and safeguard power grid stability

Summary

On April 28, 2025, a large-scale power outage occurred in Spain and Portugal, affecting tens of millions of residents and businesses, and causing a complete paralysis of infrastructure such as public transportation, medical institutions, communication networks and airports. The cause of the power outage is still under investigation, and it is initially suspected to be related to rare atmospheric vibrations in high-voltage lines or technical failures in the power grid. As power is gradually restored across the country, this incident once again highlights the importance of power safety, especially the key role of cable product quality in ensuring power grid stability and the safety of users' personal and property. Our company, Shenxing Cable Group, takes this opportunity to call on global customers to pay attention to and choose high-quality cables that meet international standards to jointly protect a safe and reliable power environment.

Large-scale power outage in Spain

Event details

• At around 12:30 p.m. on April 28, 2025, local time, power outages occurred in many places in Spain and Portugal, covering major cities such as Madrid, Barcelona, Lisbon, Valencia, and parts of southwestern France and Andorra.

• Red Eléctrica, the Spanish power grid operator, estimated that it would take 6 to 10 hours to restore power; REN, the Portuguese national power grid company, ruled out the possibility of a cyber attack, pointing to the oscillation and desynchronization of high-voltage lines caused by internal technology or atmospheric factors.

• Power in some areas had been restored by 61% that evening, but the impact on households, transportation and industrial production was still significant.
  
  

Impact Scope

• Madrid Metro system paralyzed, flights at Barcelona Airport delayed, and traffic lights failed in many places, causing large-scale congestion and safety hazards.

• Hospitals and emergency services switched to backup power generation mode, increasing the pressure on emergency resources; ATMs were disconnected from the Internet, public cash withdrawals were restricted, and communication and Internet services were interrupted to only 17% of normal levels.

• Well-known events such as the Madrid Open were forced to suspend, long-distance trains and buses stopped running, and commercial activities and social order were seriously disrupted.

Key points for electricity safety

Use electricity reasonably and avoid overload

• Households and businesses should reasonably allocate electricity consumption of electrical appliances according to actual load, avoid turning on high-power equipment at the same time to cause line overload, and reduce the risk of tripping and fire.

• Regularly check the contact of distribution boxes, leakage protectors and sockets. If they are found to be aging or loose, they should be replaced or reinforced in time to prevent the increase of contact resistance and the risk of heating.

Environment and line layout

• The cables should be kept away from water sources, high temperature areas and passages susceptible to mechanical damage. They should be fixed with pipes or buckles to avoid dragging on the ground or cross-pile cables.

• For outdoor and industrial lines, special cables with UV resistance, oil resistance, rat resistance and fire resistance should be selected, and they should be cleaned and maintained regularly to extend their service life.

Cable product quality is the cornerstone of safety assurance

International standards and certifications

• High-quality cables must comply with international standards such as IEC 60228, which strictly regulate conductor cross-sectional area, resistance, mechanical flexibility and thermal stability to ensure current carrying capacity and safety margin.

• Common certifications include CE, UL, CB Scheme, ENEC and CEBEC, which indicate that the product has passed multiple tests such as insulation strength, fire resistance, and aging resistance, and complies with European and global electrical safety regulations.

Materials and processes

• High-quality copper or aluminum alloy conductors must have high purity and uniform structure to reduce resistance and heat generation; the sheath and insulation layer should be made of Class A flame retardant materials to prevent the spread of fire.

• Strict production processes include constant temperature extrusion, vacuum annealing, and multiple inspections to ensure that the finished cable can operate reliably for a long time under conditions such as high temperature, humidity, and mechanical impact.

Enterprise appeal

Shenxing Cable Group has been focusing on the research and development and export of high-end cables for many years. All products have passed authoritative certifications such as IEC, UL, CE, etc., covering the fields of power, communication, industrial automation, etc. We advocate "safe use of electricity, starting with high-quality cables", welcome global customers to contact us for orders, and jointly protect the safety of the power grid and social stability. If you have any needs or technical consultations, please feel free to contact us.
Hotline/Whatsapp: +86 151-2718-1092
E-Mail:sales@sxcables.com