MIL-DTL-24643/15 LSDSGU Shipboard Cable

Mil-Spec Military part number MIL-DTL-24643/15 has one cable-type designation: LSDSGU. The cable is rated for 1000 volts and uses Standard Identification Code by Method 1 or 3, or Letter Identification Code applied by Method 5.  24643/15 cords use thermoset insulation and have an outer cross-linked polyolefin jacket (XLPO). Each LSDSGU cable is either taped or has an extruded outer covering. The two conductors are cabled with fillers as needed to make a firm, well-rounded assembly, with an optional binder. All versions of the cord are watertight and have non-flexing service. They operate within a temperature range of -20°C to +105°C. These cables are permitted to penetrate bulkheads or watertight decks.

What does the cable designation LSDSGU mean?

In the cable designation for LSDSGU, the letters LS refer to low smoke and halogen-free cable. D refers to double conductors or two conductors, SG refers to silicone and glass insulation, and U refers to the fact that the cable is unarmored.

M24643/15 Construction:

• Conductors: Two stranded bare copper wire conductors.
• Insulation: Silicone rubber and glass tape insulation.
• Shield: Either taped or extruded jacket.
• Jacket: Low-Smoke, Halogen-Free (LSZH) Cross-Linked Polyolefin (XLPO) with surface markings

M24643/15 Ratings and Approvals

• Mil-Spec:
  • MIL-DTL-24643
  • MIL-I-45208A
  • MIL-STD-790
• Navy Shipboard Spec: LSDSGU.
• Voltage Rating: 1000V

Features and Benefits of M24643/14 Cords

• Watertight cables can operate in a wide variety of situations, including through bulkheads and between decks.
• Thermoset insulation is ideal for settings where durability and stiffness are essential
• 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
• Silicone/glass insulation is prized for numerous reasons. First of all, it has greater moisture resistance which reduces the rate of failure that can occur due to excessive moisture condensation in some vessels. 
• Silicone/glass insulation is also highly resistant to fire, and if burned, will generate significantly less smoke and corrosive or toxic gases than other insulation materials.
• Meets the 1-hour fire electrical circuit integrity requirements.