Non-Tracking Tube


The Innovative Power Products NTT series nontracking tubing is ideally suited as an exterior component for indoor or outdoor medium voltage terminations rated 5 kV through 35 kV. The NTT tubing material has been factory engineered to provide outstanding nontracking performance in accordance with ASTM D2303. The NTT tubing also has superb U.V., SO2 and ozone resistance. The NTT tubing is hydrophobic, allowing it to be electrically stressed along its surface, once installed. It provides a lightweight, flexible, nontracking outer surface for any insulating tubular surfaces subjected to the rigors of the environment and/or to electrical surface stress.

Physical Properties
Specification
Test Method
Value (nom.)
Density
ISO/R1183-A
1.20 g/cm3
Tensile Strength
ISO 37
8.0 MPa min.
Ultimate Elongation
ISO 37
200% min.
Low Temp. Flexibility
ASTM D-2671
0.5% max
Longitudinal Change
MIL-I-23053
±10%
       
Electrical Properties
Specification
Test Method
Value (nom.)
Dielectric Strength
ICE 243
10kV/mm min.
Volume Resistivity
ASTM D257
2x 1012 ohm-cm
     
Chemicall Properties
Fluid Resistance
(24hrs @ 23°C)
 
Tensile Strength
1200 PSI min
 



• Lightweight and Flexible
• Slim Profile
• Conforms to Underlying Contours
• Available in Rust Red Only
• Indefinite Shelf Life
• Low Installed Cost



  • To download a PDF copy of the data sheet Click here.

    For a complete PDF of the current IPP catalog Click Here. If you would like the catalog in a printed version, please go to the "Catalog Request" page via the link at the top of the page.


  • InnoFit™ Type NTT

    For medium voltage terminator components see:
    FCT (Field Control Tubing)
    E Mod (Nontracking Sheds)
    FCM (Field Control, Oil-Blocking Material)




Tubing Size Inside Diameter Wall Thickness WT Standard
As Supplied
(D)
After Recovery (d) Post Recovery Spool Length
NTT075 0.79 (20.0mm) 0.40 (10.0mm) .055 (1.40mm) 100 feet
NTT100 1.00 (26.0mm) 0.50 (12.0mm) .094 (2.40mm) 100 feet
NTT120 1.18 (30.0mm) 0.60 (15.0mm) .102 (2.60mm) 100 feet
NTT175 1.78 (45.0mm) 0.79 (20.0mm) .114 (2.90mm) 50 feet
NTT200 2.00 (50.0mm) 1.00 (25.0mm) .118 (3.00mm) 50 feet
NTT250 2.55 (65.0mm) 1.18 (30.0mm) .120 (3.10mm) 50 feet

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