Products Description
Brief Introduction
WORTAI polymeric insulators of the DS series are used for suspension or dead-end installations in electrical power distribution systems, replacing conventional porcelain or glass insulator chains.
Polymeric insulators are initially manufactured using a fiberglass rod (as the core), which is attached to metal fittings—specifically, clevis and tongue components made of specially forged steel with a hot-dip galvanized coating. Subsequently, an insulating envelope (crafted from high-quality silicone rubber) is applied to this assembly. The end result is a compact, lightweight insulator that boasts exceptional mechanical resistance and high durability against harsh weather conditions.
The key advantages of using WORTAI DS series insulators are as follows:
• The insulator’s housing and sheds are constructed from silicone rubber via one-shot injection molding. This process ensures that the interface between the rubber and the rod is completely impermeable to moisture ingress.
• The insulator’s core rod is made of fiberglass, which delivers excellent electrical insulation performance and mechanical strength.
• Silicone rubber’s high hydrophobicity effectively suppresses surges in leakage current.
• Superior operational performance in polluted environments.
• Lightweight design, facilitating easier handling and installation.
• All WORTAI silicone insulators are manufactured and tested in compliance with ANSI C29.13 and IEC 1109 standards.
Technical Parameters
1 | Catalogue Number | / | FXBW24-/70 | |
2 | ANSI CLASS | / | DS28 | |
3 | Voltage Class | kV | 28 | |
4 | Rated Frequency | Hz | 50/60 | |
5 | Specified Mechanical Load (SML) | kN | 70 | |
6 | Routine test load (RTL) | kN | 35 | |
7 | Torsional load | N.m | 47 | |
8 | Creepage Distance | mm | 665 | |
9 | Section Length | mm | 455 | |
10 | Dry Arc Distance | mm | 318 | |
11 | Critical Impulse Flashover Voltage (Pos/Neg) | kV | 200/225 | |
12 | .Power Frequency Flashover Voltage (Dry/Wet) | 130/110 | ||
13 | Standard | / | IEC 61109, ANSI C29.13 | |
14 | Fiber Glass Rod | / | E-class (ECR) | |
15 | Polymer Housing | / | Methyl vinyl silicone rubber | |
16 | End Fittings | / | Galvanized forged C45 steel | |
17 | R-Clip | / | Stainless | |
18 | Color of Housing | / | Dark gray (other colors on request) | |
Note:The catalogue in the above table are for "CT"clevis-tongue fittings. For other combinations of end fittings, specified mechanical strengths or require a longer creepage distance etc, please indicate before ordering.
Production & Inspection
