H1: TR-205 Station Post Insulator — 8.9kN Porcelain Line Post Insulator for Distribution Lines
The TR-205 Station Post Insulator is a solid-core porcelain line post insulator designed for mechanical support and electrical insulation of conductors in overhead power distribution and substation applications.
Manufactured in strict accordance with ANSI Standard, this insulator provides reliable performance for distribution and station applications.
The glaze color is available in brown or light gray. The design features a robust porcelain body, ensuring easy installation and stable performance under extreme temperature cycling.
Whether used in crossarm-mounted distribution lines, pole-top structures, or substation applications, the TR-205 Station Post Insulator offers a cost-effective and durable solution for modern distribution infrastructure.
H2: TR-205 Station Post Insulator Technical Specifications
The TR-205 Station Post Insulator features a cantilever strength of 8.9kN, tension strength of 38kN, torsion strength of 791Nm, and compression strength of 44.5kN, making it ideal for line post applications in distribution networks.
Key electrical and dimensional ratings are detailed below:
| S/N | Technical Standard Particulars/Details | Brown (TR-205B) | Light Gray (TR-205G) |
| 1 | Product Item No./SKU Code | TR-205B | TR-205G |
| 2 | Glaze Color | Brown | Light Gray |
| 3 | Standard | ANSI | ANSI |
| 4 | Type / Mounting | Station Post / Vertical | Station Post / Vertical |
| 5 | Diameter (D) | 178 mm | 178 mm |
| 6 | Height (H) | 254 mm | 254 mm |
| 7 | Creepage Distance | 394 mm | 394 mm |
| 8 | Cantilever Strength | 8.9 kN | 8.9 kN |
| 9 | Tension Strength | 38 kN | 38 kN |
| 10 | Torsion Strength | 791 N·m | 791 N·m |
| 11 | Compression Strength | 44.5 kN | 44.5 kN |
| 12 | Power Frequency Dry Withstand Voltage | 50 kV | 50 kV |
| 13 | Power Frequency Wet Withstand Voltage | 45 kV | 45 kV |
| 14 | Lightning Impulse Withstand Voltage | 110 kV | 110 kV |
| 15 | Net Weight (approx.) | 7.0 kg | 7.0 kg |
| 16 | Applicable Standard | ANSI | ANSI |
Material: Manufactured from high-grade wet-process porcelain per ANSI requirements.
Mounting: Station post / vertical design.
H2: Material & Construction
Every unit of the TR-205 Station Post Insulator is made from high-grade wet-process porcelain, fired at high temperature to achieve maximum density and near-zero porosity. The solid-core line post design ensures easy handling and reliable performance under extreme thermal cycling.
The hard, glossy glaze coating offers good self-cleaning properties, reducing maintenance frequency. Metal parts are made of galvanized malleable iron, ductile iron, steel, or aluminum, with ferrous parts hot-dip galvanized per applicable standards.
Both brown and light gray glaze colors are available. For more on porcelain manufacturing standards, visit the American National Standards Institute (ANSI): https://www.ansi.org
H2: TR-205 Station Post Insulator Applications & Installation
The TR-205 Station Post Insulator is widely used in overhead power distribution lines and substation applications, typically installed on crossarms and pole-mounted structures. It is ideal for:
- Overhead distribution line conductor support
- Crossarm-mounted applications
- Pole-top structures
- Dead-end and angle applications in distribution networks
- Station post applications
The vertical mounting design allows easy installation. Explore our full range of station post insulators: https://www.tcinsulators.com/products/station-post-insulators/ and transmission hardware for more options.
H2: TR-205 Station Post Insulator Quality & Performance Advantages
Compared to polymer alternatives, porcelain offers unmatched resistance to UV radiation, bird pecking, and scratch damage. Its glaze reduces continuous water film formation, significantly raising pollution flashover voltage.
Moreover, the TR-205 Station Post Insulator requires minimal routine maintenance and delivers a service life of over 30 years under normal operating conditions. Full testing procedures are detailed in ANSI standards, published by the American National Standards Institute.
Every unit undergoes 100% routine electrical and mechanical testing before dispatch, including visual inspection, dimensional checks, mechanical load tests, and high-voltage withstand tests. Design tests — such as power frequency dry and wet withstand, lightning impulse withstand, and thermal shock — are performed per ANSI standards on new designs.
Quality conformance tests including porosity, galvanizing, cantilever-strength, tension-strength, torsion-strength, and compression-strength tests are conducted on each lot. Full test reports and traceability records are provided for each batch.
For installation guidance, refer to our insulator string assembly guide.
H2: Packing & Shipping
Each insulator is individually packed with foam cushioning and secured in sturdy cartons to prevent transit damage. We offer flexible shipping options (FOB, CIF, EXW) with lead times of 15-30 days depending on order quantity.
For detailed datasheets, CAD drawings, or competitive pricing on the TR-205 Station Post Insulator, please contact our sales team via the inquiry form below. We also offer OEM services and free technical consultation for distribution line design.
H2: Why Choose Our TR-205 Station Post Insulator
When selecting a TR-205 Station Post Insulator for your distribution project, quality and reliability are paramount. Our TR-205 Station Post Insulator is subject to strict quality control at every production stage — from raw material inspection to final electrical testing.
We understand that distribution line outages are costly, which is why each TR-205 Station Post Insulator is designed for long-term durability. With years of experience in porcelain insulator manufacturing, we provide competitive pricing, fast delivery, and dedicated technical support.
Whether you need a small sample batch or a full container order, our TR-205 Station Post Insulator is available with short lead times. Contact us today to learn how the TR-205 Station Post Insulator can enhance your distribution grid reliability.
Internal Links
TR-205 Station Post Insulator: https://www.tcinsulators.com/products/tr-205-station-post-insulator/
Station Post Insulators: https://www.tcinsulators.com/products/station-post-insulators/
Contact TC Insulators: https://www.tcinsulators.com/contact/
Insulator String Assembly Guide: https://www.tcinsulators.com/insulator-manufacturer-5/
External Links
TC Insulators Official Website: https://www.tcinsulators.com
American National Standards Institute (ANSI): https://www.ansi.org
