3M 7642-S-2 (7000149321) QT-III Cold Shrink Termination Kit, 5/8/15 kV, 2 AWG - 400 kcmil, Concentric Neutral Cable, 1 Termination/Kit, Indoor/Outdoor

The 3M™ 7642-S-2 (3M stocking number 7000149321) is a QT-III Cold Shrink silicone rubber skirted termination kit for terminating 5, 8 and 15 kV jacketed concentric neutral (JCN) and unjacketed concentric neutral (CN) power cable, indoors or outdoors. Each kit makes one single-phase termination. The one-piece, 2-skirt termination combines a UV-stable, tracking-resistant silicone rubber insulator with High-K stress relief (stress control tube plus conformable stress controlling compound) and a built-in environmental top seal, and is qualified as an IEEE Std. 48 Class 1 termination rated 110 kV BIL (15 kV class).

Conductor Range by Voltage Class (compression lugs or connectors)

• 5 kV: 4/0 AWG – 400 kcmil
• 8 kV: 3/0 AWG – 300 kcmil
• 15 kV: 2 AWG – 4/0 AWG (35 – 120 mm²)

Final kit selection is determined by cable insulation diameter: primary insulation O.D. 0.64" – 1.08" (16,3 – 27,4 mm). The 7642-S-2(L) variant pairs with 3M™ Mechanical Shearbolt Lugs QL2 Series; an inverted version (7642-S-INV-2) is also available from 3M.

Key Features

• IEEE Std. 48 Class 1 termination for 5, 8 and 15 kV CN/JCN cable, 110 kV BIL.
• Makes ONE single-phase termination per kit — order three kits for a three-phase circuit.
• Pliable, tight environmental seal designed for jacketed and unjacketed concentric neutral power cables.
• 2-skirt outdoor design adds creepage distance for contaminated and wet environments.
• Cold shrink installation — slide over the prepared cable and unwind the core; no heat, no special tools, no force fit.
• UV-stable, tracking-resistant, hydrophobic silicone rubber insulator with High-K stress control.
• Rated for cables with 105°C (221°F) maximum continuous operating temperature and 140°C (284°F) emergency overload.
• Each kit includes 1 termination, 2 Scotch® Mastic Sealing Strips 2230 and instructions (lug not included).

Applications

• Terminating URD-style concentric neutral and jacketed concentric neutral distribution cable.
• Riser poles, pad-mounted switchgear and transformer connections, indoors or outdoors.
• Free-hanging or bracket-mounted, upright or inverted installations.

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