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High-Performance HTV Silicone Rubber Deadend Insulator for Distribution Lines up to 69 kV

2025-12-11 10:50:36

Polymer deadend insulator also named composite deadend insulator or silicone rubber deadend insulator. ANSI standard DS series distribution deadend insulators utilize a conventional silicone shed housing through injection molding and bonding to a fiberglass core.

 Application:

Polymer deadend insulators are used on overhead lines operating upto 69 kV. These composite deadend insulators are used to support line conductors in suspension or deadend modes such as line terminations, angles, and tangents. Silicone rubber deadend insulators can be used with bare or covered conductors.

silicone rubber deadend insulator

 Housing and Sheds:

The housing and sheds of the polymer deadend insulator is one piece, high temperature vulcanized, injection molded silicone rubber that is chemically bonded to the fiber glass core rod. This ensures that the interface between the rubber and rod is impenetrable against moisture ingress.

 Structure and features:

  1. Fiber glass core rod: the silicone rubber insulator core rod is produced from highest quality materials . Strands are aligned from Max. tensile strength.
  2. End fittings: clevis and tongue end fittings are crimped directly to fiberglass core rod, the crimp requires no intermovement of parts to achieve high strength.
  3. Insulator sheds: the composite deaded insulator sheds are made of HTV silicone rubber, this material offers the desirable toughness and resistance, with the hydrophobic characteristics derived from low molecular weight silicone oils.
  4. Leakage distance or creepage distance: polymer deadend insulators feature high leakage distance for optimum contamination performance.
  5. Standard: All the polymer deadend insulator comply with ANSI Standard C29.13 and IEC61109

composie deadend insulator

 Orient polymer deadend Insulator Character:

  1. Orient adopts the high lever DEKUMA injection molding machines produce composite deadend insulators.
  2. Orient uses HTV silicone rubber which hydrophobicity can reach to HC1 level and thickness of the housing is more than 3mm.
  3. Orient uses ECR rod as the core which is high acid resistant.
  4. Orient uses hot dip Galvanizing steel fitting, the average thickness of the zinc coat more than 86μm.
  5. Orient adopts the advance fitting crimping producing technology to assure the deadend insulator mechanical strength.
  6. Orient adopts the unique notch design of the sealing of metal fitting, all the notch thickness keep the same which avoid the sharp end discharge.

deadend insulator drawing

Items Unit Types
DS-15 DS-28 DS-35 DS-46 DS-69
Section length mm 330±15 430±15 525±60 590±50 750±75
Min creepage distance mm 355 550 730 900 1190
Low frequency dry flashover kV 90 130 145 180 220
Low frequency wet flashover kV 65 100 130 145 185
Positive critical impulse flashover kV 140 190 250 280 360
Radio influence voltage
Test voltage kV 15 20 30 30 45
Max. RIV @ 1000kHz 10 10 10 10 10
Min SML LB 10000 10000 10000 10000 10000
Min torsional load FT-LB 35 35 35 35 35

 

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