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  • Prysmian and Draka Cable Power Duct LSZH Duct Flame-retardant Cable

    Design Parameters:
    Duct: Modified PE with low smoke and flame-retardant additives. Schedule 40 or Schedule 80 duct is available in sizes from 1 to 3 inches in diameter. Different colors and duct with a molded-in longitudinal stripe for identification are available.

    Applications:
    • LSZH duct is for use in facilities where flammability and smoke generation are a concern. It is a non-metallic duct made of modified polyethylene (PE) with low-smoke and flame-retardant additives.
    • LSZH duct can be supplied as an empty tube, with a pull line or with Draka cables pre-installed. It is shipped with sealed ends to prevent entry of moisture and other contaminants.

    Specifications and Ratings:
    • GR-356-CORE for Fiber Optic Duct
    • ASTM D-2447 Standard Specification for Polyethylene (PE) Plastic Pipe, Schedule 40 and 80, Based on Outside Diameter.
    • ASTM D-6070 for physical properties
    • NEMA TC-7 Compression & Recovery, 85% minimum
    • NEMA TC-7 Crush Resistance, NEMA TC-7 Table 4-1
    • NEMA TC-7 Impact Test (room temp), NEMA TC-7: No cracks > 30% max
    • NEMA TC-7 Limiting Oxygen Index, ASTM D-2863: 28 minimum
    • NEMA TC-7 Environmental Stress Cracking, ASTM D-1693, Test Condition C: No cracks > 20% max, 192 hr. exposure, 100% Igepal CO-630
    • NEMA TC-7 Vertical Tray Flame Test UL-1581: No propagation

    Schedule 40 LSZH duct
    nominal duct
    trade size
    in (mm)
    outer
    diameter
    in (mm)
    wall
    thickness
    in (mm)
    pipe
    weight
    lbs/mft
    minimum
    bend radius
    in (mm)
    1.00 (25.4) 1.315 (33.4) 0.133 (3.4) 309 14 (355)
    1.25 (31.8) 1.660 (42.1) 0.140 (3.6) 418 17 (432)
    1.50 (38.1) 1.900 (48.3) 0.145 (3.7) 500 19 (483)
    2.00 (50.8) 2.375 (60.3) 0.154 (3.9) 670 24 (610)
    2.50 (63.5) 2.875 (73.0) 0.203 (5.2) 1047 28 (711)
    3.00 (76.2) 3.500 (88.9) 0.216 (5.5) 1366 42 (1067)
    3.00 (76.2) 3.04 (77.3) .215 (5.49) 1015 1495

    Schedule 80 LSZH duct
    duct size
    in (mm)
    outer
    diameter
    in (mm)
    wall
    thickness
    in (mm)
    minimum physical
    properties
    for all duct sizes
    test method test
    requirement
    1.00 (25.4) 1.315 (33.4) 0.133 (3.4) compression & recovery nema tc-7 85% minimum
    1.25 (31.8) 1.660 (42.1) 0.140 (3.6) crush resistance nema tc-7 nema tc-7 table 4-1
    1.50 (38.1) 1.900 (48.3) 0.145 (3.7) impact test (room temp) nema tc-7 no cracks > 30% max
    2.00 (50.8) 2.375 (60.3) 0.154 (3.9) impact test (-20° c) nema tc-7 no cracks > 30% max
    2.50 (63.5) 2.875 (73.0) 0.203 (5.2) limiting oxygen index astm d-2863 28 minimum
    3.00 (76.2) 3.500 (88.9) 0.216 (5.5) environmental
    stress cracking
    astm d-1693, test condition c
    192 hr. exposure, 100% igepal co-630
    no cracks > 20% max
    vertical tray
    flame test
    ul-1581 no propagation

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