產品概述 Product Overview

NHXLC 耐火密集型母線槽除在電氣性能上有絕緣母線槽之有點外，更具有的防火性能，其導電材料選用導電銅排，絕緣采用云母及高強陶瓷材料，母線外殼采用雙層隔熱器。內外采用防火材料處理。該母線槽能在周圍環境溫升到960℃時連續工作不低于90 分鐘。具備無毒、無污染及在滅火時能防止水滲透的性能。

NHXLC Fire-Resistant Compact Busway not only retains the electrical advantages of insulated busways, but also features unique fire-resistant properties. It utilizes high-quality copper busbars as conductive material, insulated with mica and high-strength ceramic materials. The busway enclosure employs a dual-layer thermal barrier, with both internal and external components treated with fire-resistant materials. This busway can maintain continuous operation for no less than 90 minutes when the ambient temperature reaches 960° C. It possesses non-toxic and pollution-free characteristics, while also preventing water penetration during firefighting operations.

結構特點 Structural characteristics

● 擁有與"XLC 系列" 相同的" 三明治" 相線緊密疊壓結構設計，母線槽外形緊湊、體積小，母線系統具有阻抗低、電壓降低、動熱穩定性好的優點，無發生火災時“煙囪效應”形成的可能。

● 外殼采用冷拉成型薄鋼型材混合組成。其兩邊側板為我公司獨創的雙層中空結構。通過密閉中空游戲阻止高溫其他或者明火直接進入母線內部。母線外殼表面為鍍鋅加噴防火涂料( 遇火時，涂料能迅速以幾何速度在母線表面膨脹形成致密的碳化隔熱層。密閉母線外殼縫隙。防止高溫直接進入母線內部)。

● 接頭采用專用耐火型絕緣組件，連接可靠方便。

◎ 絕緣配置

● NHXLC 系列母線耐火絕緣介質主要采用絕緣支撐選用氧化鋁高溫陶瓷件，可耐高溫達1000℃母線銅導體絕緣采用聚酰亞胺和耐高溫粉云母帶混合纏繞( 聚酰亞胺俗稱黃金帶，是電工行業的絕緣材料，具有較好的耐高溫和介電性能，介電強度≥ 22000V, 在高溫中無有毒氣體釋出；粉云母帶耐火溫度高達960-1000℃ /1.5 小時，參照IEC371-3-8、GBI2666.6 耐火特性試驗達到A 類要求）。

● Inherits the same "sandwich" compact laminated phase conductor structure as the "XLC Series", resulting in a compact busway profile with minimal footprint. The system delivers low impedance, reduced voltage drop, and excellent dynamic/thermal stability, while eliminating any risk of "chimney effect" during fire events.

● The enclosure is constructed from cold-formed thin-wall steel profiles. Its side panels feature our proprietary double-layer hollow structure, which utilizes sealed cavities to block hightemperature gases or direct flames from penetrating the busway interior. The surface receives galvanization plus fire-resistant coating (when exposed to fire, this coating expands at exponential rates to form a dense carbonized insulation layer, sealing all enclosure gaps against heat penetration).

● Joints incorporate dedicated fire-resistant insulation assemblies for reliable and convenient connections.

◎ Insulation Configuration

● NHXLC Series Busway Fire-Resistant Insulation System utilizes alumina high-temperature ceramic components for insulation support, capable of withstanding temperatures up to 1000 ° C. The copper busbar conductors are insulated with a composite wrapping of polyimide (commonly known as "gold tape") and high-temperature mica tape. Polyimide, recognized as the most advanced insulation material in the electrical industry, offers excellent high-temperature resistance and dielectric properties with a dielectric strength ≥ 22,000V and no toxic gas emissions under extreme heat. The mica tape withstands 960-1000 ° C for 1.5 hours, meeting Class A fire resistance requirements per IEC 60331-3-8 and GB 12666.6 standards.

產品特點 Product Features

● 耐水性能：采用高性能的絕緣樹脂澆筑而成，具有優良的氣密性和水密性，防護等級達IP68。IP68 是級別的防護等級，能防止灰塵的進入，并且能在連續浸水的情況下也能長期可靠運行。

● 耐火性能：絕緣樹脂為自熄性絕緣材料，耐火性為A 級，防火等級為F120；可在950-1000℃的火焰中工作90min 以上，保持線路不中斷，而且絕緣樹脂不含鹵素，高溫時不會釋放有害氣體。

● 耐腐蝕性能：金屬外殼的母線槽不能防酸雨腐蝕，化工廠產生的腐蝕性氣體，甚至有腐蝕性的液體會濺落到電氣產品上。這就要求母線有抗腐蝕性能。澆注母線槽的環氧樹脂澆注料具有優良的防腐性能，能有效抵抗各種化學品的侵蝕。

● Water Resistance Performance: Encapsulated with high-performance insulating resin, the system demonstrates exceptional airtightness and watertightness, achieving IP68 protection rating - the highest level that prevents dust ingress and ensures long-term reliable operation even during continuous submersion.

● Fire Resistance Performance: The self-extinguishing insulating resin material achieves Class A fire resistance with F120 fire rating, maintaining circuit integrity for over 90 minutes in 950-1000° C flames. Being halogen-free, it releases no toxic fumes under hightemperature conditions.

● Corrosion Resistance Performance: Unlike metal-enclosed busways vulnerable to acid rain corrosion, the cast epoxy resin formulation provides superior chemical resistance, effectively withstanding corrosive gases from chemical plants and splash exposure to corrosive liquids.

適用范圍 Scope of application

NHXLC 型耐火母線槽適用于額定電壓690V 以下，額定工作電流250A-6300A、頻率50-60Hz 的輸配電系統。該系列母線是在NHXLC 母線基礎上，結合國內實際情況設計的耐火母線。經過多年的試驗、試生產和工業試運行，其電氣性、耐火性、金屬結構性均達到了國內高水平。

NHXLC Fire-Resistant Busway is designed for power distribution systems with rated voltage up to 690V, rated operating current from 250A to 6300A, and frequency of 50-60Hz. Developed based on the NHXLC busway platform and adapted to domestic conditions, this series represents a new generation of fire-resistant busways. Through years of testing, trial production, and industrial trial operations, its electrical performance, fire resistance, and structural integrity have achieved technologically advanced levels by domestic standards.

技術參數 Technical Parameter

耐火母線現場圖 On Site Diagram of Fire-resistant Busbar