30426 Bobbin – Reel Insulator – Low Voltage Overhead Distribution
The 30426 Bobbin – Reel Insulator is a robust and dependable solution for general use on open wire Low Voltage (LV) distribution networks and service arrangements on wood poles. Designed for use in conjunction with a D-iron and pin, this insulator ensures seamless integration into low voltage power networks.
The 30426 features a durable glazed brown porcelain finish, providing excellent weather resistance and long-term durability in outdoor environments. With its rugged construction, this bobbin (reel) type insulator offers reliable mechanical performance with a 15kN minimum failing load (MFL) and a 5kN safe working load (SWL) for direct pull applications.
30426 Bobbin – Reel Insulator – Designation Breakdown
The designation “Item No 30426” is a specific manufacturer product code. The breakdown below reflects its primary application and design features:
| Code | Meaning |
| 30426 | Model series / Bobbin-Reel type LV insulator |
| Bobbin-Reel | Spool-shaped design for secure conductor tying and strain relief |
30426 Bobbin – Reel Insulator – Technical Specifications
| Parameter | Value |
| Model | Item No 30426 |
| Applicable Standard | Designed for general LV overhead distribution |
| Application | Open wire LV distribution network and service arrangements |
| Compatibility | Used with a D-iron and pin |
| Material | Porcelain |
| Color | Brown |
| Surface Finish | Glazed Brown |
| Marking | Firing date, month, year, and logo indelibly marked |
| Height | 65 mm |
| Outer Diameter (Top) | 76 mm |
| Outer Diameter (Bottom) | 44 mm |
| Inner Hole Diameter (Min.) | 17.5 mm |
| Top Section Width | 22 mm |
| Side Height | 32 mm |
| Groove Radius (Min.) | 9.5 mm |
| Safe Working Load (SWL) – Direct Pull | 5 kN |
| Minimum Failing Load (MFL) – Direct Pull | 15 kN |
30426 Bobbin – Reel Insulator – Key Features
High Mechanical Strength – With a minimum failing load of 15 kN and a safe working load of 5 kN for direct pull, the insulator reliably withstands conductor tension, wind loads, and ice accretion, ensuring long-term stability in overhead line installations. For installation best practices, refer to our Insulator installation guide for overhead lines.
Low Voltage Optimized – Designed specifically for open wire low voltage distribution networks and service arrangements on wood poles, making it an ideal choice for LV distribution networks.
D-Iron and Pin Compatibility – Specifically engineered for use in conjunction with a D-iron and pin, ensuring easy and secure installation on wooden poles.
Glazed Brown Porcelain Finish – The insulator features a durable brown glaze coating that provides excellent weather resistance, UV protection, and self-cleaning properties, ensuring long-term performance in harsh outdoor environments.
Indelible Marking – The firing date, month, year, and manufacturer logo are indelibly marked on the insulator, ensuring traceability and quality assurance.
Reliable Design – Engineered for long-term reliable operation with minimal maintenance requirements – regular visual inspections and cleaning are typically sufficient to ensure continued performance.
30426 Bobbin – Reel Insulator – Application Scenarios
The 30426 Bobbin – Reel Insulator is ideal for:
- General use on open wire Low Voltage (LV) distribution networks
- Service arrangements on wood poles
- Outdoor installations with exposure to all atmospheric factors
- AC overhead power lines with frequencies not exceeding 100 Hz
- Power distribution networks in normal environmental conditions
- Installation on wooden poles using a D-iron and pin
For projects involving different voltage classes or mechanical load requirements, explore our related product ranges such as 1130W/32 11kV Pin-Type Insulator, TYPE 210 Porcelain Shackle Insulator, TYPE 205 Porcelain Shackle Insulator, and TYPE 510 Porcelain Pin Insulator.
30426 Bobbin – Reel Insulator – Standards Compliance
| Standard | Description |
| AS/NZS 2947.1 | Test methods — Insulator units (Applicable testing methodology) |
| AS 3608-2005 | Insulators — Porcelain and glass, pin and shackle type — Voltages not exceeding 1000V a.c. (Reference for LV design principles) |
| AS 1154.1 | Insulator and conductor fittings for overhead power lines – Performance, material, general requirements and dimensions |
For a comprehensive overview of how these standards apply to your specific project, visit our AS/NZS standards compliance overview.
Why Choose 30426 Bobbin – Reel Insulator for Your Power Grid?
- Proven reliability – engineered with 15 kN minimum failing load and 5 kN safe working load for dependable LV distribution applications.
- D-Iron compatibility – specifically engineered for use with a D-iron and pin on wood poles.
- Weather-resistant – durable glazed brown porcelain finish provides excellent weather resistance and UV protection.
- Traceability – indelibly marked with firing date, month, year, and logo for quality assurance.
- Cost-effective – high performance at competitive pricing, reducing total project costs.
- Versatile – suitable for a wide range of low voltage overhead distribution applications.
About the 30426 Bobbin – Reel Insulator Manufacturer
The 30426 Bobbin – Reel Insulator is manufactured by a leading insulator manufacturer with decades of experience in power line products. The manufacturer holds ISO 9001 certification and produces insulators in accordance with IEC, ANSI, ASTM, AS, BS, DIN, and ISO standards. All products undergo rigorous electrical and mechanical testing before shipment, ensuring the highest quality standards. View the full BONLE official pin insulator product range for related product specifications and technical documentation.
Model: Item No 30426 | Application: LV Overhead Distribution | SWL: 5 kN | MFL: 15 kN
Related Products & Technical Resources
Related Products
- 1130W/32 11kV Pin-Type Insulator – 250mm creepage, 11kN cantilever, semi-conductive
- SLP/11/180 11kV Pin-Type Insulator – AS 4899 compliant, 180mm creepage, 7kN cantilever
- TYPE 510 Porcelain Pin Insulator – 400-3000V, Cordeau thread, 7kN cantilever
- TYPE 210 Porcelain Shackle Insulator – 650V, 7kN designed loading
- TYPE 205 Porcelain Shackle Insulator – 3300V, 13.5kN designed loading
- 11kV strain insulators for overhead lines – 15kV wet flashover, 71kN mechanical failing load
- 22kV pin type insulators for high voltage – 150kV impulse withstand, 450mm creepage
- 71kN strain insulator for line (AS3609) – Compliant with AS3609
- 222kN strain insulator for line (AS3609) – 20kV wet flashover, 222kN failing load
Technical Resources
- Complete porcelain pin insulator selection guide
- Insulator installation guide for overhead lines
- AS/NZS standards compliance overview
- Pollution level selection guide for insulators
References & Authoritative Resources
- AS 3608-2005 – Insulators – Porcelain and glass, pin and shackle type – Voltages not exceeding 1000V a.c. – Standards Australia
- AS/NZS 2947.1 – Test methods for insulator units – Intertek Inform
- For engineers comparing equivalent LV bobbin insulator options, the TE LV Shackle Insulator datasheet provides a useful benchmark for standard configurations.
- Semi-conducting glaze insulator performance study – IEEE Xplore (Relevant for contamination performance insights)
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