利路通工程师浅谈：UL1424认证中FPL与FPLR 电缆的区别

利路通工程师浅谈：UL1424认证中FPL与FPLR 电缆的区别
Discussion on the difference between FPL and FPLR cables in UL1424 certification by engineers from Lilutong

1. 标准与定义 Standards and definitions

‌UL1424‌：这是美国保险商实验室（UL）制定的消防电缆标准，主要针对高阻燃性能的电缆设计，适用于火灾报警系统等关键电路‌。利路通获得了UL1424的认证。

UL1424: This is a fire cable standard developed by Underwriters Laboratories (UL) in the United States, mainly designed for cables with high flame retardant performance, suitable for critical circuits such as fire alarm systems. Lilutong has obtained UL1424 certification.

‌FPL‌：全称为“Fire-Protective Cable”，是一种限功率火灾报警电缆，专为电源输出功率受限的电路设计，符合UL1424标准‌。

FPL: also known as Fire Protective Cable, is a power limited fire alarm cable designed specifically for circuits with limited power output and complies with the UL1424 standard.

‌FPLR‌：是FPL的改进型号，增加了“R”后缀（通常表示“Rated”或“Reinforced”），在阻燃性能和机械强度上有所提升，同样符合UL1424标准‌。

FPLR: It is an improved model of FPL that adds the suffix "R" (usually representing "Rated" or "Reinforced"), which improves flame retardancy and mechanical strength, and also complies with UL1424 standards.

2. 结构差异 Structural differences

‌导体‌：FPL和FPLR电缆通常采用绞合裸铜或镀锡丝导体，符合ASTM B3标准‌。

Conductors: FPL and FPLR cables typically use stranded bare copper or tinned wire conductors that comply with ASTM B3 standards.

屏蔽与绝缘‌：FPLR可能采用更严格的屏蔽设计（如铝箔屏蔽），以增强抗干扰能力，而FPL多为基本绝缘结构‌。

Shielding and Insulation: FPLR may adopt stricter shielding designs (such as aluminum foil shielding) to enhance anti-interference capabilities, while FPL is mostly a basic insulation structure.

3. 应用场景 Application scenarios

‌FPL‌：主要用于电源电压和电流受限的火灾报警系统，如应急照明、信号传感系统、消防水泵等‌。

FPL: mainly used for fire alarm systems with limited power supply voltage and current, such as emergency lighting, signal sensing systems, fire pumps, etc.

FPLR‌：适用于更高要求的场景，如机场、隧道、火车站等人员密集场所的消防报警系统，或需要额外屏蔽的复杂电磁环境‌。

FPLR: Suitable for higher demand scenarios such as fire alarm systems in densely populated places like airports, tunnels, train stations, or complex electromagnetic environments that require additional shielding.

4. 性能对比 Performance comparison

‌阻燃性‌：两者均具备高阻燃性能，但FPLR可能通过更严格的测试（如自熄性）‌。

Flame retardancy: Both have high flame retardancy, but FPLR may pass more stringent tests (such as self extinguishing).

功率限制‌：均需符合NEC（国家电气规范）对电压和电流的限制，FPLR可能支持更高功率的电路‌。

Power limitation: Both must comply with NEC (National Electrical Code) voltage and current limitations, and FPLR may support higher power circuits.

总结 summary

利路通：希望以上总结助您更了解标准电缆：FPL和FPLR电缆均基于UL1424标准，核心区别在于FPLR在屏蔽、机械强度或阻燃性能上更优，适用于更严苛的环境。选择时需根据具体场景的功率需求和抗干扰要求决定。

Lilutong: We hope the above summary helps you better understand standard cables: FPL and FPLR cables are both based on the UL1424 standard, with the core difference being that FPLR has better shielding, mechanical strength, or flame retardant performance, making it suitable for more demanding environments. The selection should be based on the power requirements and anti-interference requirements of the specific scenario.

利路通欢迎大家莅临参观指导
Lilutong welcomes everyone to visit and guide us。