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安徽UL认证培训,电线UL认证

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Appliance Wiring Material - Component

The materials covered under this category are incomplete in certain constructional features or restricted in performance capabilities and are intended for use as components of complete equipment submitted for investigation rather than for direct separate installation in the field. THE FINAL ACCEPTANCE OF THE COMPonENT IS DEPENDENT UPON ITS USE IN EQUIPMENT SUBMITTED TO UL.

USE
This category covers appliance wiring material (AWM) that has been tested in accordance with the established procedures to define certain properties in order to facilitate the investigation of its use in end-product equipment.

The wire/cable includes single- and multi-conductor constructions of a wide range of conductor sizes, insulation thickness, and materials. "Hook-up wire" and "lead wire" is covered under this category but not described as such. Wire is generally intended for the specific application as indicated on the tag, reel or smallest unit container. The voltage rating does not apply to voltage between conductors in a parallel or flat construction.

A construction in any of the sections may include a jacket. Specialty wire and/or cable is intended for a specific application as defined for that construction.

ConDITIONS OF ACCEPTABILITY
A style page is used to describe the construction of each style number. The style page includes information such as temperature and voltage rating, conductor size and material, insulation material and thickness, jacket material and thickness (if provided), a description of any shields or coverings, the required markings, and the use statement. This information is used to determine the suitability of the particular wire construction for use in the particular application. A facing page may be used to modify the requirements on a style page or provide information in addition to what is on the style page. The facing page is proprietary for each manufacturer.

FLAME RATINGS
All AWM has a minimum flame rating as defined on the style page. AWM may be additionally investigated to one of the following international flame tests:

IEC 60332-1-1, "Tests on Electric and Optical Fibre Cables Under Fire Conditions - Part 1-1: Test for Vertical Flame Propagation for a Single Insulated Wire or Cable Apparatus"
IEC 60332-2-2, "Tests on Electric and Optical Fibre Cables Under Fire Conditions - Part 2-2: Test for Vertical Flame Propagation for a Single Small Insulated Wire or Cable - Procedure for Diffusion Flame"
IEC TS 60695-11-21, "Fire Hazard Testing - Part 11-21: Test Flames - 500 W Vertical Flame Test Method for Tubular Polymeric Materials"
PRODUCT MARKINGS
Products Recognized under UL's Component Recognition Program are identified by markings on the attached tag, reel, or smallest unit container. The marking consists of:

A. Wire/cable designation: AWM.
B. Maximum temperature and voltage ratings.
C. Recognized company name, trade name, other applicable mark or file number. When a Recognized company produces AWM in more than one location, an additional distinctive marking is provided that identifies the specific manufacturing location of the AWM.
D. Size and quantity of conductors. The quantity and "AWG" or metric size in mm2 of the conductors in wire or cable is provided, except for single conductor cable. For cable containing a mixture of sizes of individual or paired conductors, the size and quantity of each size conductor is provided (example: 2/18 AWG and 4/24 AWG).
E. Conductor material.
Exception: Conductor material marking is not required for unalloyed copper.
F. The conductivity of the conductor in percent of unalloyed copper. Reference IACS (International Annealed Copper Standard).
Exception: Not applicable for unalloyed copper or 61% IACS aluminum.
G. Insulation and jacket material and average wall thickness (example: Insulation SRPVC 0.009 inch; Jacket: PVC 0.030 inch).
H. Use statement.
I. Date of manufacture by month and year. As an option, the date code may be printed on the cable in lieu of on the tag.
J. For cable that contains one or more optical fibers, the following statement or equivalent: "Optical-fiber portion(s) of cable are for installation as described in Article 770 and other applicable parts of ANSI/NFPA 70, "National Electrical Code." Where optical fiber is installed in a laser system, the system shall comply with the LIA/ANSI Z136 laser system safety standards."
K. For cable that contains one or more optical fiber members, or group of such members, having a metal or other electrically conductive part, the following statement or equivalent: "Optical-fiber portion(s) of cable contains non-current-carrying metal or other electrically conductive parts."
L. For cable that contains a conductive polymeric shield, the following wording or equivalent is included on the tag: "Conductive shield" or "Contains Polymeric Conductive Shield."
M. For cable with mixed voltage rating, the voltage rating of each conductor is provided.
N. For cable that employs stranded conductors with tin overcoating, the following statement or equivalent shall be included on the tag: "Stranded conductor with tin overcoating."
O. When the direction of lay of single-bunch, bunch-stranded conductors, and lay of the outermost layer in the other stranded conductors is right-hand, the direction of lay shall be indicated on the tag.
P. For cable employing a composite conductor consisting of a central steel strand surrounded by six copper strands, the following statement or equivalent shall be included on the tag: "Stranded copper with steel core, for use only in electronic equipment in dry locations where not subject to flexing and where not terminated with wire nut connectors."
Q. Cable where it has been determined that all of the combustible materials used in the construction (e.g., insulation, fillers, jackets) are halogen-free in accordance with UL 2885, "Outline of Investigation for Acid Gas, Acidity and Conductivity of Combusted Materials and Assessment of Halogens," may be surface marked with the suffix "-HF."
R. Cable that may be surface printed with the suffix "-HF" and that also complies with the requirements for low smoke when tested in accordance with IEC 61034-2, "Measurement of Smoke Density of Cables Burning Under Defined Conditions - Part 2: Test Procedure and Requirements," may be surface marked with the suffix "-LSHF."
Additional marking may be required as described in each Recognized company's file. Wire that complies with the requirements of the VW-1 flame test or one of the international flame tests indicated under FLAME RATINGS above is so marked.

REQUIREMENTS
The basic standard used to investigate products in this category is ANSI/UL 758, "Appliance Wiring Material." In addition, IEC TS 60695-11-21, "Fire Hazard Testing - Part 11-21: Test Flames - 500 W Vertical Flame Test Method for Tubular Polymeric Materials," may also be used.

UL MARKING
Components Recognized under UL's Component Recognition Program are identified by markings consisting of the Recognition Mark of UL (shown below) on the attached tag, the reel, or the smallest unit container in which the product is packaged.

In addition to the above tag, reel or container marking, the Recognized Component Mark  may optionally be surface printed on the appliance wiring material. When used, the product name "Appliance Wiring Material" (or "AWM") will also be surface printed adjacent to the Recognized Component Mark , followed by the Recognized company's identification and/or file number. If the Recognized company's file number is an element of the surface printing, the Recognized Component Mark  is required to also be surface printed.

The Listing or Classification Mark of UL is not authorized for use on, or in connection with, Recognized Components. only those components that actually bear the "Marking" should be considered as being covered under the Component Recognition Program.

电线和电缆应用范围很广,可用于工业机械和电气/电子设备中。包括电源,照明电路和控制电路,可编程输入/输出控制器和电机电路。在UL认证电线中有AWM和MTW系列的线缆,今天我们就简单的谈谈这两种线缆。
2007年AWM在NFPA - 79代码电气规范中被省略,并且禁止其在工业机器的使用。那么什么是AWM线缆?
AWM的全称含义Designation for appliance wiring material.  该线缆设计用于电器配线材料,符合 UL758标准。AWM系列的线材经常被用于互连传感器,执行器,交换机和其他组件的连接线。
MTW:Thermoplastic insulated machine tool wire. 热塑绝缘机械工具用线
符合 UL 1063标准和 NFPA 79 标准的机械电气要求
一个专业的线缆生产商会建议你使用具有UL 列名认证的 MTW电缆来确保产汽合NFPA-79电器规范的要求。.MTW线缆是根据UL1063标准---即机械工具线缆标准的要求生产。通常MTW线缆是一个较大的电缆适用于板内或导管。它是构建是由较大的铜导线,并含有比300V较多的电缆塑料。其材质是坚固耐磨的聚乙绝缘或聚乙/尼龙绝缘
绞合导体,柔韧性更好。干燥环境中,工作温度可达 90 o C(194 o F);若曝露于湿气、油或冷却剂环境中,工作温度可达 60o C (140o F)。VW-1 级阻燃或更高,耐油级别 I等多个优异的特性使其能够满足更广泛的应用要求。
详询sunny陶13913142465

 
 
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