MIL-DTL-24640/14 1XSOW Shipboard Cable

Mil-Spec Military part number MIL-DTL-24640/14 has a single cable-type designation: 1XSOW. The cable is rated for 600 volts and uses twisted pair identification codes by applying Method 2.  24640/14 cords use Extruded irradiated cross-linked Polyalkene insulation with irradiated cross-linked Polyvinylidene Fluoride (PVDF) insulation and have a low-smoke zero-halogen (LSZH) cross-linked polyolefin (XLPO) jacket. The cable contains single conductors in white that are insulated as discussed above and tested in accordance with SAE-AS81044/12 except that the identification will be according to MIL-STD-24640. Each conductor is shielded with a 38 AWG tin-copper braided shield, then wrapped either in two polyester tapes or a single polyester tape in an extruded jacket.

 

The required number of shielded conductors is then combined into a single assembly, numbering consecutively from the center outward. Fillers may be used to create a firm, well-rounded cable which is enclosed with an optimized overall shield of tin-copper braid and is finally placed into a cross-linked polyolefin (XLPO) jacket. These cords are lightweight, watertight, and have non-flexing service. The cable operates within a temperature range of -20°C to +105°C. Watertight cables can operate in a wide variety of situations, including through bulkheads and between decks.

What does the cable designation 1XSOW mean?

In the cable designation for 1XSOW, 1 refers to single conductors, X refers to irradiated cross-linked Polyalkene insulation with irradiated cross-linked Polyvinylidene Fluoride (PVDF) insulation, S pertains to individual tin-coated copper shielding for each conductor, O refers to an overall optimized tin-coated copper braided shield, and W refers to the watertight quality of the cable.

M24640/14 Construction:

• Conductors: 7-strand tin-coated copper conductors
• Insulation: Extruded irradiated cross-linked Polyalkene insulation with irradiated cross-linked Polyvinylidene Fluoride (PVDF) insulation
• Shielding:
  • Each conductor is shielded with a 38 AWG tin-coated copper braided shield
  • Each cable also has an overall optimized tin-coated copper braided shield
• Jacket: Low-smoke zero-halogen (LSZH) cross-linked polyolefin (XLPO).

M24640/14 Ratings and Approvals

• Mil-Spec: MIL-DTL-24640
• Navy Shipboard Spec: 1XSOW
• SAE-AS81044/12 except that the identification will be according to MIL-STD-24640
• Voltage Rating: 600V

Features and Benefits of M24640/14 Cords

• Watertight cables can operate in a wide variety of situations, including through bulkheads and between decks.
• Cross-linked polyalkene/polyvinylidene fluoride insulation provides protection in environments with ultra-high vacuum, high temperatures, and ionizing radiation.
• LSZH jacket is fire resistant and emits low smoke, which is ideal for shipboard settings which often have restricted ventilation
• LSZH jackets also emit low acid, gas, and toxicity when subjected to fire, maintaining circuit integrity
• Individually shielded conductors reduce electrical noise created by electromagnetic signals in the cable while also providing greater protection and durability than unshielded cables.
• Braided shielding is heavier than foil shielding and provides additional protection against EMI/RFI as well as protecting the cable in rugged environments. The braided shield also provides better grounding than foil shields.