3M 7666-S-HSG-8 Cold Shrink QT-III Silicone Rubber Termination
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Manufacturer 3M
Mfg Catalog # 7666-S-HSG-8
Irby Part # 2741932


3M Cold Shrink QT-III Outdoor terminations offer easy installation and reliable performance when terminating indoor and outdoor medium voltage cable. The unique step-core design combined with the built in Hi-K stress control and silicone sealing compounds means simpler installation on all types of cable. It has UV stability and track and erosion resistance. Plus its Hi-K stress control design delivers excellent BIL performance and lower surface stress resulting in a more compact termination. Through superior engineering, 3M Cold Shrink QT-III Outdoor terminations deliver maximum performance.

Conductor Size Range for

· 5 kV: 1750-2000 kcmil

· 8 kV: 1500-2000 kcmil

· 15 kV: 1250-2000 kcmil

· 25/28 kV: 900-1750 kcmil

· 35 kV: 700-1500 kcmil


  • Insulation Level: 100%, 133%
  • Product Series: 7660-S-HSG
  • Conductor Sizes: 1750 kcmil, 1500 kcmil, 750 kcmil, 1000 kcmil, 800 kcmil, 700 kcmil, 2000 kcmil, 1250 kcmil, 900 kcmil
  • Cable Insulation Outside Diameter Range: 1.53-2.32 in
  • Cable Insulation Outside Diameter Range (metric): 38.9-58.9 mm
  • Family: QT-III
  • RoHS 2011/65/EU Compliant: Undetermined
  • Number of Conductors: 1
  • Lug/Stem Connector Included in Kit: No
  • Shielding Type: Longitudinally Corrugated (LC), Wire-Over-Tape Shield, Tape Shield
  • Voltage: 8 kV, 35 kV, 25/28 kV, 5 kV, 15 kV
  • RoHS EU Comments: Contact 3M for information
  • Agency Approvals: IEEE
  • Breakout Boot: No
  • BIL: 200 kV
  • Maximum Installed Length: 21.50 in
  • Number of Skirts: 8
  • Trademark: 3M
  • Indoor/Outdoor: Outdoor Skirted
  • Insulation Rejacketing: No
  • Product Family: QT-III



UPC 05400742464
GTiN 00054007424642
Conductor Size 1000 MCM; 1250 MCM; 1500 MCM; 1750 MCM; 2000 MCM; 700 MCM; 750 MCM; 800 MCM; 900 MCM
Applications Outdoor
Cable Type Longitudinally Corrugated (LC); Tape Shield; Wire-Over-Tape Shield
Family Brand Name 3M
Voltage 892.857/5,000/8,000/15,000/35,000 Volt
Indoor Outdoor Outdoor Skirted

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