Which places require Fire-Rated Switchgear?
Fire-Rated Switchgear (also known as Fire-Resistant Switchgear or Fire-Resistant Distribution Cabinets) are specially designed electrical enclosures. Their core function is to maintain the normal operation of internal electrical equipment for a specified duration (typically 30 minutes, 60 minutes, 90 minutes, or 120 minutes) during a fire, while preventing flames and hot gases from propagating through the enclosure to other areas. This provides critical time for personnel evacuation, firefighting operations, and the continued operation of essential equipment.
2025/07/14
Three IEC International Standards for Electrical Relays Led by China Have Been Officially Released!
IEC 63522-6:2025 Electrical Relays – Tests and Measurements – Part 6: Contact Circuit Resistance (or Voltage Drop)； IEC 63522-35:2025 Electrical Relays – Tests and Measurements – Part 35: Resistance to Cleaning Agents，IEC 63522-36:2025 Electrical Relays – Tests and Measurements – Part 36: Fire Hazard，Issuing Body: International Electrotechnical Commission (IEC)
2025/07/07
Why Are GuoWei ZhiChuang’s Protective Relays So Popular Among Global Users?
GuoWei ZhiChuang’s protective relays have gained widespread popularity among global users due to their advantages in technological innovation, reliability, market adaptability, and policy support. Here is a detailed analysis:
2025/07/03
Which Countries Globally Lack the Capability to Develop protection relays?
Based on search results, the global research and development (R&D) capabilities in the relay industry are unevenly distributed. Many countries still rely on imports or lack independent R&D capabilities for high-end relays (such as high-voltage, high-reliability, aerospace/military-grade relays). Below is an overview of countries or regions with limited or no capability to develop protective relays:
2025/06/25
