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This specification covers the general requirements for heat-shrink cable entry seals. Cable entry seals are intended for making electrical cable penetrations into connection boxes, bulkheads, or other enclosures. Heat-shrink cable entry seals shall be of the following types: Type I (Types I-1, I-2, I-3, I-4, I-5, and I-6); Type II (Types II-1, II-2, II-3, and II-4); Type III; and Type IV. The rigid plastic parts shall be made from polyamide (nylon), or polyester material, or both. The following tests shall be performed: conformance testing; mechanical abuse test; and level of effectiveness.
This abstract is a brief summary of the referenced standard. It is informational only and not an official part of the standard; the full text of the standard itself must be referred to for its use and application. ASTM does not give any warranty express or implied or make any representation that the contents of this abstract are accurate, complete or up to date.
1.1 This specification covers the general requirements for heat-shrink cable entry seals. Cable entry seals are intended for making electrical cable penetrations into connection boxes, bulkheads, or other enclosures. These devices are suitable for both thin wall enclosures up to 5 mm (3/16 in.) thick and thick-wall enclosures of 5 mm to 19 mm (3/16 in. to 3/4 in.) thick.
2. Referenced Documents (purchase separately) The documents listed below are referenced within the subject standard but are not provided as part of the standard.
D149 Test Method for Dielectric Breakdown Voltage and Dielectric Strength of Solid Electrical Insulating Materials at Commercial Power Frequencies
D257 Test Methods for DC Resistance or Conductance of Insulating Materials
D412 Test Methods for Vulcanized Rubber and Thermoplastic Elastomers--Tension
D570 Test Method for Water Absorption of Plastics
D635 Test Method for Rate of Burning and/or Extent and Time of Burning of Plastics in a Horizontal Position
D747 Test Method for Apparent Bending Modulus of Plastics by Means of a Cantilever Beam
D792 Test Methods for Density and Specific Gravity (Relative Density) of Plastics by Displacement
D2240 Test Method for Rubber Property--Durometer Hardness
D2671 Test Methods for Heat-Shrinkable Tubing for Electrical Use
D2863 Test Method for Measuring the Minimum Oxygen Concentration to Support Candle-Like Combustion of Plastics (Oxygen Index)
D3149 Specification for Crosslinked Polyolefin Heat-Shrinkable Tubing for Electrical Insulation
D4572 Test Method for Rubber Chemicals--Wet Sieve Analysis of Sulfur
D4732 Specification for Cool-Application Filling Compounds for Telecommunications Wire and Cable
ASME StandardASMEB1.1 Unified Inch Screw Threads (UN and UNR Thread Form) Available from American Society of Mechanical Engineers (ASME), ASME International Headquarters, Three Park Ave., New York, NY 10016-5990, http://www.asme.org.
NEMA StandardsNEMA250 Enclosures for Electrical Equipment (1000 Volts Max)
IEC StandardIEC68-2-6 Environmental Testing-Part 2: Tests-Test FC: Vibration (Sinusoidal) Sixth Edition Available from International Electrotechnical Commission (IEC), 3, rue de Varembe, Case Postale 131, CH-1211, Geneva 20, Switzerland.
ICS Number Code 29.035.20 (Plastic and rubber insulating materials)