標準編號:	GB/T 19666-2019
中文名稱:	阻燃和耐火電線電纜或光纜通則
英文名稱:	General rules for flame retardant and fire resistant electric wires and cables or optical fiber cables
中標分類:	K13    電纜及其附件
行業分類:	GB    國家標準
ICS分類:	29.060.20 29.060.20    電纜 29.060.20
發布機構:	中華人民共和國國家市場監督管理總局 中國國家標準化管理委員會
發布日期:	2019-12-10
實施日期:	2020-7-1
標準狀態:	valid
替代舊標準:	GB/T 19666-2005 阻燃和耐火電線電纜通則
翻譯語言:	英文
文件格式:	PDF
中文字符數:	21000 字
翻譯價格(元):	1350.0
交付時間:	付款后 1 個工作日

Codeofchina.com is in charge of this English translation. In case of any doubt about the English translation, the Chinese original shall be considered authoritative. This standard is developed in accordance with the rules given in GB/T 1.1-2009. This standard replaces GB/T 19666-2005 Flame retardant and fire resistant wires and cables — General. The following main technical changes have been made with respect to GB/T 19666-2005: ——Optical fiber cables have been added to the application scope (see Clause 1); ——The definition of "low toxicity" has been added (see 3.5); ——The clause "General" has been added (see Clause 4); ——The designation of codes N, NJ and NS have been modified (See Table 1; Table 1 in 2009 Edition); ——The combinations of burning behavior codes of halogen-free, low-smoke and low-toxicity flame retardant series and fire resistant series have been added (see 5.1.2); ——The assessment indicator and test method of flaming droplets have been added (see Table 4); ——The acceptance criteria that "the flaming burning time on the sample shall not exceed 1h after removing fire" has been deleted (see Table 4 of 2005 Edition); ——The acceptance criteria and test method of NJ and NS have been added (see Table 6); ——The acceptance criteria and test method of halogen acid gas release volume and halogen content in halogen-free properties have been added (see Table 7); ——The pH and conductivity weighted values for halogen-free properties have been modified (see Table 7; Table 6 of 2005 Edition); ——The note "The minimum light transmittance test results of electric wires and cables or optical fiber cables with an outer diameter greater than 80 mm shall be multiplied by a factor (d/80) as the final conclusion" has been added (see Table 8). ——The acceptance criteria and test method of low toxicity have been added (see 6.5); ——The technical requirements for halogen-free, low-smoke and low-toxicity flame retardant electric wires and cables and optical fiber cables have been added (see 7.1.3); ——"The properties of fire resistant mica tape may refer to Annex C to this standard" has been deleted. If the fire resistant layer is between conductor and insulator, the thickness of insulation layer may be reduced, but the thickness after reduction shall not be less than 80% of the original standard thickness "(see 6.4 of 2005 Edition); ——The nature and contents of Annex A have been modified (see Annex A; Annex A to 2005 Edition); ——The nature and contents of Annex B have been modified (see Annex B; Annex B to 2005 Edition); ——The nature and contents of Annex C have been modified (see Annex C; Annex C to 2005 Edition). This standard was proposed by China Electrical Equipment Industry Association. This standard is under the jurisdiction of National Technical Committee on Wires and Cables of Standardization Administration of China (SAC/TC 213). The previous edition of this standard is as follows: ——GB/T 19666-2005. General rules for flame retardant and fire resistant electric wires and cables or optical fiber cables 1 Scope This standard specifies the burning behavior code, technical requirements, test methods and acceptance rules of flame retardant and fire resistant electric wires and cables or optical fiber cables, including the burning behavior of halogen-free, low smoke, low toxicity, flame retardance and fire resistance. This standard is applicable to flame retardant and fire resistant electric wires and cables or optical fiber cables containing halogen, halogen-free or with low smoke or low toxicity. 2 Normative references The following referenced documents are indispensable for the application of this standard. For dated references, only the edition cited applies. For undated references, the latest edition (including any amendments) applies. GB/T 4208-2017 Degrees of protection provided by enclosure (IP code) GB/T 17650.1 Test on gases evolved during combustion of materials from cables or optical fiber cables — Part 1: Determination of the halogen acid gas content GB/T 17650.2 Test on gases evolved during combustion of materials from cables or optical fiber cables — Part 2: Determination of acidity (by pH measurement) and conductivity GB/T 17651.2 Measurement of smoke density of cables burning under defined conditions — Part 2: Test procedure and requirements GB/T 18380.12 Tests on electric and optical fibre cables under fire conditions — Part 12: Test for vertical flame propagation for a single insulated wire or cable — Procedure for 1 kW pre-mixed flame GB/T 18380.13 Tests on electric and optical fibre cables under fire conditions — Part 13: Test for vertical flame propagation for a single insulated wire or cable — Procedure for determination of flaming droplets/particles GB/T 18380.22 Tests on electric and optical fibre cables under fire conditions — Part 22: Test for vertical flame propagation for a single small insulated wire or cable — Procedure for diffusion flame GB/T 18380.33 Tests on electric and optical fibre cables under fire conditions — Part 33: Test for vertical flame spread of vertically-mounted bunched wires or cables — Category A GB/T 18380.34 Tests on electric and optical fibre cables under fire conditions — Part 34: Test for vertical flame spread of vertically-mounted bunched wires or cables — Category B GB/T 18380.35 Tests on electric and optical fibre cables under fire conditions — Part 35: Test for vertical flame spread of vertically-mounted bunched wires or cables — Category C GB/T 18380.36 Tests on electric and optical fibre cables under fire conditions — Part 36: Test for vertical flame spread of vertically-mounted bunched wires or cables — Category D GB/T 19216.21 Tests for electric cables under fire conditions — Circuit integrity — Part 21: Procedures and requirements — Cable of rated voltage up to and including 0.6/1.0 kV GB/T 19216.23 Tests for electric cables under fire conditions — Circuit integrity — Part 23:Procedures and requirements — Electric data cables GB/T 19216.25 Tests for electric cables under fire conditions — Circuit integrity — Part 25: Procedures and requirements — Optical fibre cables IEC 60331-1 Tests for electric cables under fire conditions — Circuit integrity — Part 1: Test method for fire with shock at a temperature of at least 830°C for cables of rated voltage up to and including 0,6/1,0 kV and with an overall diameter exceeding 20 mm IEC 60331-2 Tests for electric cables under fire conditions — Circuit integrity — Part 2: Test method for fire with shock at a temperature of at least 830°C for cables of rated voltage up to and including 0,6/1,0 kV and with an overall diameter not exceeding 20 mm IEC 60684-2:2011 Flexible insulating sleeving — Part 2: Methods of test IEC 60754-3 Test on gases evolved during combustion of materials from cables — Part 3: Measurement of low level of halogen content by ion chromatography 3 Terms and definitions For the purpose of this document, the following terms and definitions apply. 3.1 flame retardance burning behavior that after a sample is burned under the specified conditions, the flame spread on the sample only within a limited range after the fire source is removed, i.e., burning behavior of a sample to prevent or delay the occurrence or spread of flame 3.2 fire resistance burning behavior that a sample can operate continuously under specified conditions when it is burned on a specified fire source and in specific period 3.3 halogen free burning behavior that the content of halogen (fluorine, chlorine, bromine and iodine) in the gases released from burning is less than or equal to 1.0 mg/g 3.4 low smoke burning behavior that the concentration of smoke from burning will not reduce visibility (light transmittance) to the degree adversary to escape 3.5 low toxicity burning behavior that the toxicity and concentration of toxic smoke from burning will not cause the death of living organisms within 30 min 4 General The burning behavior of flame retardant and fire resistant electric wires and cables or optical fiber cables shall meet the requirements of this standard, and properties other than burning ones shall meet the relevant product standards. Electric wires and cables or optical fiber cables may reduce their original basic properties while achieving the purpose of flame retardance and/or fire resistance, or make some original test methods inapplicable. The parties to agreements based on this standard shall discuss or negotiate an appropriate solution, which shall ensure the safety and reliability of electric wires and cables or optical fiber cables during use while achieving the purpose of flame retardance and/or fire resistance. On the premise of not compromising the safety and reliability during use, the corresponding technical indicators or test methods may be properly adjusted. 5 Product designation 5.1 Burning behavior codes and combinations 5.1.1 Burning behavior codes See Table 1 for the burning behavior codes. ? Table 1 Burning behavior codes Code Designation Z a Single flame retardance ZA b Category A flame retardance ZB Category B flame retardance ZC Category C flame retardance ZD Category D flame retardance Halogen-containing W Halogen-free D Low smoke U Low toxicity N Resistance to fire only NJ Resistance to fire with shock NS Resistance to fire with shock and water jet a For halogen-containing products, "Z" is omitted. b This is only applicable to Category A of GB/T 18380.33, excluding Category AF/R of GB/T 18380.32. 5.1.2 Combination of burning behavior codes See Table 2 for the combination of burning behavior codes for flame retardant series, and Table 3 for the combination of burning behavior codes for fire resistant series. When there are requirements for various burning behavior, the codes are arranged and combined in the order of halogen-free (the code for halogen-containing is omitted), low smoke, low toxicity, flame retardance and fire resistance. ? Table 2 Combination of burning behavior codes for flame retardant series Series Code Designation Flame retardant series Halogen-containing ZA Category A flame retardance ZB Category B flame retardance ZC Category C flame retardance ZD Category D flame retardance Halogen-free and low-smoke WDZ Halogen-free low smoke and flame retardance of single cable WDZA Halogen-free, low smoke and Category A flame retardance WDZB Halogen-free, low smoke and Category B flame retardance WDZC Halogen-free, low smoke and Category C flame retardance WDZD Halogen-free low smoke and Category D flame retardance Halogen-free, low smoke and low toxicity a WDUZ Halogen-free, low smoke, low toxicity and flame retardance of single cable WDUZA Halogen-free, low smoke, low toxicity and Category A flame retardance WDUZB Halogen-free, low smoke, low toxicity and Category B flame retardance WDUZC Halogen-free, low smoke, low toxicity and Category C flame retardance WDUZD Halogen-free, low smoke, low toxicity and Category D flame retardance a This is optional based on the application occasion of electric wires and cables or optical fiber cables, which may include compacted space or crowded places with relatively closed environment. ? Table 3 Combination of burning behavior codes for fire resistant series Series Code Designation Fire resistant series Halogen-containing N, NJ, NS Fire resistance ZAN, ZANJ, ZANS Category A flame retardance and fire resistance ZBN, ZBNJ, ZBNS Category B flame retardance and fire resistance ZCN, ZCNJ, ZCNS Category C flame retardance and fire resistance ZDN, ZDNJ, ZDNS Category D flame retardance and fire resistance Halogen-free and low smoke WDZN, WDZNJ, WDZNS Halogen-free, low smoke, flame retardance and fire resistance of single cable WDZAN, WDZANJ, WDZANS Halogen-free, low smoke, Category A flame retardance and fire resistance WDZBN, WDZBNJ, WDBZNS Halogen-free, low smoke, Category B flame retardance and fire resistance WDZCN, WDZCNJ, WDZCNS Halogen-free, low smoke, Category C flame retardance and fire resistance WDZDN, WDZDNJ, WDZDNS Halogen-free, low smoke, Category D flame retardance and fire resistance Halogen-free, low smoke and low toxicity a WDUZN, WDUZNJ, WDUZNS Halogen-free, low smoke, low toxicity, flame retardance and fire resistance of single cable WDUZAN, WDUZANJ, WDUZANS Halogen-free, low smoke, low toxicity, Category A flame retardance and fire resistance WDUZBN, WDUZBNJ, WDUBZNS Halogen-free, low smoke, low toxicity, Category B flame retardance and fire resistance WDUZCN, WDUZCNJ, WDUZCNS Halogen-free, low smoke, low toxicity, Category C flame retardance and fire resistance WDUZDN, WDUZDNJ, WDUZDNS Halogen-free, low smoke, low toxicity, Category D flame retardance and fire resistance a This is optional based on the application occasion of electric wires and cables or optical fiber cables, which may include compacted space or crowded places with relatively closed environment. 5.2 Composition of product model The model of flame retardant and fire resistant electric wires and cables or optical fiber cables consist of burning behavior codes and related wire, cable or optical fiber cable models, as shown in Figure 1. Figure 1 Model composition of flame retardant and fire resistant electric wires and cables or optical fiber cables

Foreword i 1 Scope 2 Normative references 3 Terms and definitions 4 General 5 Product designation 5.1 Burning behavior codes and combinations 5.2 Composition of product model 5.3 Product representation method 6 Requirements of burning behavior 6.1 Flame retardance 6.2 Fire resistance 6.3 Halogen-free property 6.4 Low smoke 6.5 Low toxicity 7 Technical requirements 7.1 Flame retardant electric wire and cable or optical fiber cable series 7.2 Fire-resistant electric wires and cables or optical fiber cable series 8 Acceptance rules Annex A (Normative) Water spray test method Annex B (Normative) Water jet test method Annex C (Normative) Toxicity index test method Bibliography

阻燃和耐火電線電纜或光纜通則 1 范圍 本標準規定了阻燃和耐火電線電纜或光纜的燃燒特性代號、技術要求、試驗方法和驗收規則，包括無鹵、低煙、低毒、阻燃和耐火等燃燒特性。 本標準適用于含鹵、無鹵、低煙、低毒的阻燃和耐火電線電纜或光纜產品。 2 規范性引用文件 下列文件對于本文件的應用是必不可少的。凡是注日期的引用文件，僅注日期的版本適用于本文件。凡是不注日期的引用文件，其最新版本(包括所有的修改單)適用于本文件。 GB／T 4208—2017 外殼防護等級(IP代碼) GB／T 17650.1 取自電纜或光纜的材料燃燒時釋出氣體的試驗方法 第1部分：鹵酸氣體總量的測定 GB／T 17650.2 取自電纜或光纜的材料燃燒時釋出氣體的試驗方法 第2部分：用測量pH值和電導率來測定氣體的酸度 GB／T 17651.2 電纜或光纜在特定條件下燃燒的煙密度測定 第2部分：試驗步驟和要求 GB／T 18380.12電纜和光纜在火焰條件下的燃燒試驗︰第12部分：單根絕緣電線電纜火焰垂直蔓延試驗1 kW預混合型火焰試驗方法 GB／T 18380.13 電纜和光纜在火焰條件下的燃燒試驗 第13部分：單根絕緣電線電纜火焰垂直蔓延試驗 測定燃燒的滴落(物)／微粒的試驗方法 GB／T 18380.22 電纜和光纜在火焰條件下的燃燒試驗 第22部分：單根絕緣細電線電纜火焰垂直蔓延試驗 擴散型火焰試驗方法 GB／T 18380.33 電纜和光纜在火焰條件下的燃燒試驗 第33部分：垂直安裝的成束電線電纜火焰垂直蔓延試驗 A類 GB／T 18380.34 電纜和光纜在火焰條件下的燃燒試驗 第34部分：垂直安裝的成束電線電纜火焰垂直蔓延試驗 B類 GB／T 18380.35 電纜和光纜在火焰條件下的燃燒試驗 第35部分：垂直安裝的成束電線電纜火焰垂直蔓延試驗 C類 GB／T 18380.36 電纜和光纜在火焰條件下的燃燒試驗 第36部分：垂直安裝的成束電線電纜火焰垂直蔓延試驗 D類 GB／T 19216.21 在火焰條件下電纜或光纜的線路完整性試驗 第21部分：試驗步驟和要求 額定電壓0.6／1.0 kV及以下電纜 GB／T 19216.23 在火焰條件下電纜或光纜的線路完整性試驗 第23部分：試驗步驟和要求 數據電纜 GB／T 19216.25 在火焰條件下電纜或光纜的線路完整性試驗 第25部分：試驗步驟和要求 光纜 IEC 60331-1 電纜在火焰條件下的試驗 線路完整性 第1部分：火焰溫度不低于830℃的供火并施加機械沖擊，額定電壓0.6／1.0 kV及以下外徑大于20 mm電纜的試驗方法(Tests for electric cables under fire conditions—Circuit integrity—Part 1：Test method for fire with shock at a temperature of at least 830℃ for cables of rated voltage up to and including 0，6／1，0 kV and with an overall diameter exceeding 20 mm) IEC 60331-2 電纜在火焰條件下的試驗線路完整性 第2部分：火焰溫度不低于830℃的供火并施加機械沖擊，額定電壓0.6／1.0 kV及以下外徑不大于20 mm電纜的試驗方法(Tests for electric cables under fire conditions—Circuit integrity—Part 2：Test method for fire with shock at a temperature of at least 830℃ for cables of rated voltage up to and including 0，6／1，0 kV and with an overall diameter not exceeding 20 mm) IEC 60684-2：2011 可彎曲絕緣導管 第2部分：試驗方法(Flexible insulating sleeving—Part 2：Methods of test) IEC 60754-3 取自電纜的材料燃燒過程中釋出氣體的試驗方法 第3部分：用離子色譜法測量低水平鹵素含量(Test on gases evolved during combustion of materials from cables—Part 3：Measurement of low level of halogen content by ion chromatography) 3 術語和定義 下列術語和定義適用于本文件。 3.1 阻燃 flame retardance 試樣在規定條件下被燃燒，在撤去火源后火焰在試樣上的蔓延僅在限定范圍內，具有阻止或延緩火焰發生或蔓延能力的特性。 3.2 耐火 fire resistance 試樣在規定火源和時間下被燃燒時能持續地在指定條件下運行的特性。 3.3 無鹵 halogen free 燃燒時釋出氣體的鹵素(氟、氯、溴、碘)含量均小于或等于1.0 mg／g的特性。 3.4 低煙 low smoke 燃燒時產生的煙霧濃度不會使能見度(透光率)下降到影響逃生的特性。 3.5 低毒 low toxicity 燃燒時產生的毒性煙氣的毒效和濃度不會在30 min內使活體生物產生死亡的特性。 4 總則 阻燃和耐火電線電纜或光纜產品的燃燒特性應符合本標準要求，除燃燒特性之外的其他性能應符合相應的產品標準要求。 電線電纜或光纜產品在實現其阻燃和／或耐火目的同時可能會降低其原有的基本特性，或導致原有的某些試驗方法不適用。使用本標準的各方應討論或協商一種合適的方案，在確保電線電纜或光纜產品達到阻燃和／或耐火目的同時應保證使用過程中的安全和可靠，在不降低使用過程中的安全和可靠性前提下可適當調整相應的技術指標或試驗方法。 5 產品型號 5.1 燃燒特性代號和組合 5.1.1 燃燒特性代號 燃燒特性代號見表1。 表1 燃燒特性代號 代號 名稱 Za 單根阻燃 ZAb 阻燃A類 ZB 阻燃B類 ZC 阻燃C類 ZD 阻燃D類 含鹵 W 無鹵 D 低煙 U 低毒 N 單純供火的耐火 NJ 供火加機械沖擊的耐火 NS 供火加機械沖擊和噴水的耐火 a 含鹵產品，Z省略。 b 僅適用于GB／T 18380.33的A類，不包括GB／T 18380.32的AF／R類。 5.1.2 燃燒特性代號組合 阻燃系列燃燒特性代號組合見表2，耐火系列燃燒特性代號組合見表3。有多種燃燒特性要求時，其代號按無鹵(含鹵省略)低煙、低毒、阻燃和耐火的順序排列組合。 表2 阻燃系列燃燒特性代號組合 系列名稱 代號 名稱 阻燃系列 含鹵 ZA 阻燃A類 ZB 阻燃B類 ZC 阻燃C類 ZD 阻燃D類 無鹵低煙 WDZ 無鹵低煙單根阻燃 WDZA 無鹵低煙阻燃A類 WDZB 無鹵低煙阻燃B類 WDZC 無鹵低煙阻燃C類 WDZD 無鹵低煙阻燃D類 無鹵低煙低毒a WDUZ 無鹵低煙低毒單根阻燃 WDUZA 無鹵低煙低毒阻燃A類 WDUZB 無鹵低煙低毒阻燃B類 WDUZC 無鹵低煙低毒阻燃C類 WDUZD 無鹵低煙低毒阻燃D類 a 根據電線電纜或光纜使用場合選擇使用，可包括空間較小或環境相對密閉的人員密集場所等。 表3 耐火系列燃燒特性代號組合 系列名稱 代號 名稱 耐火系列 含鹵 N、NJ、NS 耐火 ZAN、ZANJ、ZANS 阻燃A類耐火 ZBN、ZBNJ、ZBNS 阻燃B類耐火 ZCN、ZCNJ、ZCNS 阻燃C類耐火 ZDN、ZDNJ、ZDNS 阻燃D類耐火 無鹵低煙 WDZN、WDZNJ、WDZNS 無鹵低煙單根阻燃耐火 WDZAN、WDZANJ、WDZANS 無鹵低煙阻燃A類耐火 WDZBN、WDZBNJ、WDBZNS 無鹵低煙阻燃B類耐火 WDZCN、WDZCNJ、WDZCNS 無鹵低煙阻燃C類耐火 WDZDN、WDZDNJ、WDZDNS 無鹵低煙阻燃D類耐火 無鹵低煙低毒a WDUZN、WDUZNJ、WDUZNS 無鹵低煙低毒單根阻燃耐火 WDUZAN、WDUZANJ、WDUZANS 無鹵低煙低毒阻燃A類耐火 WDUZBN、WDUZBNJ、WDUBZNS 無鹵低煙低毒阻燃B類耐火 WDUZCN、WDUZCNJ、WDUZCNS 無鹵低煙低毒阻燃C類耐火 WDUZDN、WDUZDNJ、WDUZDNS 無鹵低煙低毒阻燃D類耐火 a 根據電線電纜或光纜使用場合選擇使用，可包括空間較小或環境相對密閉的人員密集場所等。 5.2 產品型號的組成 阻燃和耐火電線電纜或光纜產品的型號由燃燒特性代號和相關電線電纜或光纜型號兩部分組成，見圖1。 電線電纜或光纜型號 燃燒特性代號 圖1 阻燃和耐火電線電纜或光纜的型號組成 5.3 產品表示方法 阻燃和耐火電線電纜或光纜產品用燃燒特性代號、產品型號、規格、本標準編號和產品標準編號表示。 示例1：銅芯，交聯聚乙烯絕緣聚氯乙烯護套電力電纜，阻燃B類，額定電壓0.6／1 kV，表示為： ZB-YJV-0.6／1規格(略)GB／T 19666—20XX／GB／T 12706.1—2008 示例2：銅芯，交聯聚乙烯絕緣聚烯經護套電力電纜，無鹵低煙，阻燃A類，供火加機械沖擊和噴水的耐火，額定電壓0.6／1 kV，表示為： WDZANS-YJY-0.6／1規格(略)GB／T 19666—20XX／GB／T 12706.1—2008 示例3：銅芯，交聯聚乙烯絕緣聚烯經護套控制電纜，無鹵低煙低毒，阻燃C類，供火加機械沖擊的耐火，額定電壓450／750 V，表示為： WDUZCNJ-KYJY-450／750規格(略)GB／T 19666—20XX／GB／T 9330.3—2008 示例4：實心聚乙烯絕緣阻燃聚烯經護套柔軟對稱射頻電纜，無鹵低煙，阻燃D類，表示為： WDZD-SEYYZ 規格(略)GB／T 19666—20XX／GB／T 14864—2013 6 燃燒性能要求 6.1 阻燃性能 6.1.1 單根阻燃性能 單根阻燃性能應符合表4的要求。 表4 單根阻燃性能 代號 試樣外徑d mm 供火時間 s 合格指標 試驗方法 Z d≤25 60±2 1) 上夾具下緣與上炭化起始點之間的距離大于50 mm； 2) 上夾具下緣與下炭化起始點之間的距離不大于540 mm； 3) 試驗過程中燃燒滴落物未引燃試樣下方的濾紙 GB／T 18380.12a 和 GB／T 18380.13 25＜d≤50 120±2 50＜d≤75 240±2 d＞75 480±2 a 導體總截面積0.5 mm2以下細電線電纜或細光纜采用GB／T 18380.12試驗方法供火時可能熔斷，應采用GB／T 18380.22的試驗方法，并不進行GB／T 18380.13的試驗。 6.1.2 成束阻燃性能 成束阻燃性能應符合表5的要求。 表5 成束阻燃性能 代號 試樣非金屬材料體積L／m 供火時間min 合格指標 試驗方法 ZA 7 40 試樣上的炭化范圍不應超過噴燈底邊以上2.5 m GB／T 18380.33 ZB 3.5 40 GB／T 18380.34 ZC 1.5 20 GB／T 18380.35 ZDa 0.5 20 GB／T 18380.36 a 適用于外徑小于或等于12 mm的小電線電纜或光纜以及導體標稱截面積小于或等于35 mm2的電線電纜。 6.2 耐火性能 耐火性能應符合表6的要求。 注：特殊工況條件下，試驗時間可由制造方和購買方協商確定。 表6 耐火性能 代號 適用范圍 試驗時間 試驗電壓 合格指標 試驗方法 N 0.6／1 kV及以下電纜 90 min供火＋15 min冷卻 額定電壓 1) 2A熔斷器不斷 2) 指示燈不熄滅 GB／T 19216.21 數據電纜 90 min供火＋15 min冷卻 110 V±10 V 1) 2A熔斷器不斷 2) 指示燈不熄滅 GB／T 19216.23 光纜 90 min供火+ 15 min冷卻 — 最大衰減增量由產品標準規定或由供需雙方協商確定 GB／T 19216.25 NJ 0.6／1 kV及以下外徑小于或等于20 mm電纜 120 min 額定電壓 1) 2A熔斷器不斷 2) 指示燈不熄滅 IEC 60331-2 0.6／1 kV及以下外徑大于20 mm電纜 120 min 額定電壓 1) 2A熔斷器不斷 2) 指示燈不熄滅 IEC 60331-1 NS 0.6／1 kV及以下外徑小于或等于20 mm電纜 120 min，最后15 min水噴淋 額定電壓 1) 2A熔斷器不斷 2) 指示燈不熄滅 附錄A IEC 60331-2 0.6／1 kV及以下外徑大于20 mm電纜 120 min，最后15 min水噴射 額定電壓 1) 2A熔斷器不斷 2) 指示燈不熄滅 附錄B IEC60331-1 6.3 無鹵性能 無鹵性能應符合表7的要求。 表7 無鹵性能 代號 試驗項目 單位 合格指標 試驗方法 W 酸度和電導率試驗： ——pH值 ——電導率 — μS／mm ≥4.3 ≤10 GB／T 17650.2 GB／T 17650.2 鹵酸氣體釋出量試驗： ——HCl和HBr含量 ——HF含量 ％ ％ ≤0.5 ≤0.1 GB／T 17650.1 IEC 60684-2：2011中45.2 鹵素含量a： ——Cl ——F ——Br ——I mg／g mg／g mg／g mg／g ≤1.0 ≤1.0 ≤1.0 ≤1.0 IEC 60754-3 a 非強制要求的試驗項目，可根據需要選擇使用。 6.4 低煙性能 低煙性能應符合表8的要求。 表8 低煙性能 代號 試樣外徑d mm 試樣根數 最小透光率 ％ 試驗方法 D d＞40 1 60b GB／T 17651.2 20＜d≤40 2 10＜d≤20 3 5＜d≤10 45／da 1＜d≤5 (45／3d)×7a a 計算值取整數部分。 b 外徑大于80 mm的電線電纜或光纜的最小透光率試驗結果應乘以系數(d／80)作為最終結論。 6.5 低毒性能 試驗方法及分析方法見附錄C。 當電線電纜或光纜的應用場所有低毒性能要求時，應使用無鹵低煙低毒阻燃和／或耐火電線電纜或光纜，毒性指數可由制造方和購買方協商確定。如果未規定，則推薦毒性指數小于或等于5。 毒性指數的計算見式(1)。 (1) 式中： ITC——毒性指數； m——試樣的質量，單位為克(g)； MZ——試樣燃燒后產生氣體Z的質量，單位為毫克(mg)； CCZ——氣體Z的臨界濃度，單位為毫克每立方米(mg／m3)。即在氣體Z中暴露30 min的致死濃度。 各種氣體Z的臨界濃度見表9。 表9 各種氣體臨界濃度 7 技術要求 7.1 阻燃電線電纜或光纜系列 7.1.1 (含鹵)阻燃電線電纜或光纜 (含鹵)阻燃電線電纜或光纜采用含鹵材料制造，燃燒產物的腐蝕性較高，燃燒產生的煙霧較濃(透光率較低)。 按阻燃特性分為ZA、ZB、ZC、ZD四個類別，成束阻燃性能應符合6.1.2要求 (含鹵)阻燃電線電纜或光纜的護套和／或絕緣可選用含鹵阻燃材料，如阻燃聚氯乙烯、阻燃氯丁橡膠或添加含鹵阻燃劑的阻燃聚烯經等，性能應符合相關產品標準要求。填充、包帶或阻燃增強層等輔助材料應適當選用，使產品符合相應的阻燃類別要求。 7.1.2 無鹵低煙阻燃電線電纜或光纜 無鹵低煙阻燃電線電纜或光纜所用非金屬材料鹵素含量均很少，燃燒產物的腐蝕性較低，燃燒產生的煙霧較少(透光率較高)。按阻燃特性分為以下類別： ——無鹵低煙單根阻燃WDZ，單根阻燃性能應符合6.1.1要求； ——無鹵低煙成束阻燃WDZA、WDZB、WDZC、WDZD，成束阻燃性能應符合6.1.2要求。 無鹵低煙阻燃電線電纜或光纜的護套和／或絕緣可選用無鹵低煙阻燃材料，性能應符合相關產品標準要求。填充、包帶或阻燃增強層等輔助材料應適當選用，使產品符合相應的阻燃類別要求。 無鹵低煙阻燃電線電纜或光纜使用的非金屬材料均應符合無鹵要求，非金屬材料燃燒時釋出氣體的酸度和電導率、鹵酸氣體釋出量或鹵素含量應符合6.3要求，成品煙密度(最小透光率)應符合6.4要求。