British Standard BS6387 is a test method standard detailing the methodology and performance requirements for cables required to maintain circuit integrity under fire conditions. It has been developed to assist installation designers with their assessment of the fire performance characteristics of various types of cables and their selection for specific applications.

The core objective of BS6387 is to guarantee circuit integrity, meaning the cable continues to transmit power or signals without interruption, even when exposed to extreme fire scenarios. This is critical for emergency systems such as fire alarms, emergency lighting, smoke extraction fans, and evacuation guidance systems.

BS6387 is not just a product specification but a rigorous test methodology that scrutinizes a cable’s ability to resist flames, water, and mechanical impact under fire conditions.

英國標準BS6387是一項測試方法標準，詳細規定了在火災條件下需要保持電路完整性的電纜的測試方法和性能要求。該標準旨在幫助安裝設計人員評估各類電纜的防火性能特性，並為其特定應用選擇合適的電纜。

BS6387的核心目標是確保電路完整性，即電纜在暴露於極端火災場景時仍能持續傳輸電力或信號，不會中斷。這對於消防報警系統、應急照明、排煙風機和疏散引導系統等緊急系統至關重要。

BS6387不僅僅是產品規格，更是一套嚴格的測試方法，用於檢驗電纜在火災條件下抵抗火焰、水噴淋和機械衝擊的能力。

A CWZ-certified cable signifies exceptional performance, meaning it can withstand 950°C for 3 hours under fire alone (Category C), 650°C for 3 hours under fire with water spray (Category W), and resistance to mechanical impact under fire conditions (Category Z).

This robust combination ensures maximum reliability in extreme scenarios. Note that while CWZ has been removed as a requirement under BS7629-1 due to the preference for integrated test protocols, it is still often referenced and widely trusted in high-risk sectors.

CWZ認證電纜代表卓越性能，意味著它能承受單獨火焰950°C持續3小時（C類）、火焰加噴水650°C持續3小時（W類），並具備火災條件下的機械衝擊耐受能力（Z類）。

這種強大的組合確保了在極端情況下的最大可靠性。雖然BS7629-1由於優先採用綜合測試協議而取消了CWZ要求，但它仍在高風險行業被廣泛引用和信任。