What does cable ZB mean? Analysis of hot topics on the Internet in the past 10 days
Recently, the discussion about the meaning of "ZB" in cable models has become a hot topic in the industry, especially in the fields of electric power, construction and other fields. This article will combine the hot topic data of the entire network in the past 10 days to analyze in detail the definition, characteristics and application scenarios of "ZB" cable, and attach an analysis of relevant hot topics.
1. Analysis of the meaning of cable ZB
The "ZB" in the cable model represents "Flame-retardant Class B", which is the grade identification of the cable's flame-retardant performance. According to the national standard GB/T 19666-2019, flame-retardant cables are divided into three levels: A, B, and C. ZB means that the cable has passed the B-level flame retardant test and has the ability to inhibit the spread of flames under flame conditions.
| Flame retardant grade | Test standards | Combustion characteristics |
|---|---|---|
| ZA (Grade A) | Flame height ≥1.5m | After burning stops, the remaining flame is less than or equal to 1m |
| ZB (Class B) | Flame height ≥0.5m | After burning stops, the remaining flame is less than or equal to 0.5m |
| ZC(C level) | Flame height ≥0.25m | After burning stops, the remaining flame is less than or equal to 0.25m |
2. Hot topics related to the entire network in the past 10 days
By analyzing data from social media, industry forums and news platforms, the following are the recent hot topics related to "Cable ZB":
| Topic keywords | Discuss the popularity index | main focus |
|---|---|---|
| ZB cable price fluctuations | 8,520 | Impact of rising copper prices on ZB cable costs |
| The difference between ZB and ZC | 6,730 | How to choose flame retardant grade in construction projects |
| ZB cable fire case | 5,210 | The actual performance of ZB cable in a shopping mall fire |
| Comparison of international ZB standards | 4,890 | Differences in flame retardant standards between China and Europe and the United States |
3. Core characteristics of ZB cable
1.Material properties: Halogen-containing or halogen-free flame retardant materials are used, and flame retardants such as aluminum hydroxide are added to the insulation layer and sheath.
2.Security advantages: Compared with ordinary cables, ZB cables can reduce the amount of toxic smoke produced in fires by about 40% (data source: National Fire Protection Inspection Center).
3.Application scenarios:
4. Things to note when purchasing ZB cables
1. Look for itCCC certification markand test reports, focusing on the compliance with the GB/T 19666-2019 standard.
2. Pay attention to distinguish the different functions of "flame-retardant" (ZB) and "fire-resistant" (NH) cables. Fire-resistant cables emphasize the ability to maintain electricity in flames.
3. Recent spot inspection data from the State Administration for Market Regulation shows that about 12% of nominal ZB cables do not meet Class B flame retardant requirements. It is recommended to choose products from well-known brands.
5. Industry development trends
According to industry analysis, the flame-retardant cable market is expected to grow by 15% in 2023, of which ZB-grade products account for 63%. With the implementation of new national standards and the improvement of fire protection requirements, attention to Class A flame-retardant cables (ZA) is rising rapidly, with related searches increasing by 27% month-on-month in the past 10 days.
To sum up, as a professional flame retardant grade mark, the recognition of "Cable ZB" is increasing with the improvement of public safety awareness. When purchasing, users need to take into account the specific use environment and comprehensively consider the flame retardant grade, cost budget and long-term safety requirements.
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