UL 510:2020 free download

UL 510:2020 free download Polyvinyl Chloride, Polyethylene, and Rubber Insulating Tape1 Scope
1.1 In the US, this standard covers the following:
a) Thermoplastic and rubber tapes for use as electrical insulation at not more than 600 V and at 80°(176°F) and lower temperatures on joints and splices in wires and cables in accordance withNFPA 70. lt is intended that rubber tape on a joint or splice be mechanically protected by acovering such as friction，PE(thermoplastic polyethylene),or PVC(polyvinyl chloride or acopolymer of vinyl chloride and vinyl acetate)tape. Thermoplastic tape is acceptable without theadditional mechanical protection.
b) The characteristic constituent of the thermoplastic tape covered in this Standard is either PVc(polyvinyl chloride or a copolymer of vinyl chloride and vinyl acetate),or PE(thermoplasticpolyethylene).
1.2 In Canada, this standard covers the following:
a) Thermoplastic and rubber tapes for use as electrical insulation at not more than 600 Vand 8o°c(176°F) and lower temperatures on joints and splices in wire and cables in accordance with theCSA C22.1. It is intended that rubber tape on a joint or splice be mechanically protected by acovering such as friction，PE(thermoplastic polyethylene),or PVC(polyvinyl chloride or acopolymer of vinyl chloride and vinyl acetate) tape. Thermoplastic tape is acceptable without theadditional mechanical protection.
b) The characteristic constituent of the thermoplastic tape covered in this Standard is PE(thermoplastic polyethylene).Requirements for PVC tape are covered by CSA C22.2 No.197.
2 Units of Measurement
2.1Values stated without parentheses are the requirement. Values in parentheses are explanatory orapproximate information.
3Referenced Publications
3.1 Any undated reference appearing in the requirements of this standard shall be interpreted asreferring to the latest edition of the reference, including all revisions and amendments.
3.2The following standards are referenced in this standard, and portions of these referenced standardsmay be essential for compliance.
American Society for Testing and Materials (ASTM) Standards
ASTM D297,Standard Test Methods for Rubber Products – Chemical Analysis
ASTMD412, Standard Test Methods for Vulcanized Rubber and Thermoplastic Elastomers -Tension
CSA Group Standards
CSA C22.1, Canadian Electrical Code, Part I SafetyStandard forElectrical Installations
CSA C22.2 No. 197, PVC Insulating Tape
National Fire Protection Association (NFPA) Codes and Standards
NFPA 70, National Electrical Code
UL Standards
UL 746A, Polymeric Materials – Short Term PropertyEvaluations
ALL TAPES
4 General
4.1 The requirements in Sections 4 – 6 and 23 apply to all of the tapes covered in this Standard and are supplemented by requirements in Sections 7 – 16 covering thermoplastic tape and in Sections 17 – 22 covering rubber tape.
4.2 Unless otherwise specified, lengths of 25 mm (1 inch) wide tape for use as specimens in any of the tests specified in this standard are to be taken from sample rolls of finished tape fitted snugly onto a horizontal rod or tube that is free to turn in its supports without wobbling or other extraneous motion whenever the tape is unrolled. The tape is to be in thermal equilibrium with the surrounding air at a temperature of 23.0 ±5.0°C (73.4 ±9°F) whenever being unrolled. The tape is always to be unrolled at an even rate of approximately 50 mm/second (2 inches/second). The first three layers of tape are to be discarded. Each length of tape intended as a specimen or from which a specimen is prepared is to be protected from dust and direct handling of the adhesive side and is to be placed adhesive side up on a smooth, clean surface or is to be suspended in air under the conditions specified in 4.3 after removal from a roll and before being used in a test.