H1: 33PC Line Post Pin Insulator — 12.5kN Porcelain Insulator for Mexican Distribution Lines
The 33PC Line Post Pin Insulator / 33 PC Insulator is a solid-core porcelain line post pin insulator designed for mechanical support and electrical insulation of conductors in overhead power distribution lines.
Manufactured by BONLE (MINQING) LOW VOLTAGE ELECTRIC CO., LTD., this insulator is intended exclusively for the Mexican market. The drawing states IEC 60383 / 60273 as the applicable standard, while CFE 52000-91 is provided as the applicable Mexican standard for porcelain line post insulators for distribution lines.
The 33PC design features a grey glaze finish and offers reliable performance for distribution applications with a 34.5 kV rated voltage, 950 mm creepage distance, and 12.5 kN cantilever strength.
H2: 33PC Line Post Pin Insulator Technical Specifications
The 33PC Line Post Pin Insulator features a cantilever strength of 12.5 kN, making it suitable for line post applications in distribution networks. Key electrical and dimensional ratings are detailed below.
33PC Line Post Pin Insulator Electrical and Mechanical Specifications
| Characteristic | Value |
| Rated Voltage | 34.5 kV |
| Creepage Distance | 950 mm |
| Protected Creepage Distance | 450 mm |
| Cantilever Strength | 12.5 kN |
| Low Frequency Flashover Voltage, Wet | 80 kV |
| Low Frequency Flashover Voltage, Dry | 125 kV |
| Positive Critical Impulse Flashover Voltage | 200 kV |
| Radio Influence Voltage Test Voltage to Ground | 30 kV |
| Max. RIV | 200 μV |
| Applicable Standard (as stated in drawing) | IEC 60383 / 60273 |
| Applicable CFE Standard for Mexican Market | CFE 52000-91 |
| Color / Finish | Grey Glaze |
| Product Type | Line Post Pin Insulator |
33PC Line Post Pin Insulator Dimensions (mm)
| Item | Value |
| Top Diameter | Ø202 ±7 |
| Top Inner / Upper Bore | Ø100 ±3 |
| Radius | R25 ±2 |
| Middle Shed Diameter | Ø177 ±5 |
| Overall Height | 432 ±15 |
| Bottom Thread | M20 x 2.5 |
| Bottom Bore / Related Diameter | Ø44 ±2 |
| Bottom Metal Base Diameter | Ø138 ±3 |
| Bottom Base Height | 73 ±2 |
| Additional Heights | 22 ±2; 10 ±2 |
H2: 33PC Line Post Pin Insulator Material & Construction
Every unit of the 33PC Line Post Pin Insulator is made from high-grade porcelain with a grey glaze, fired at high temperature to achieve maximum density and near-zero porosity. The solid-core line post pin design ensures easy handling and reliable performance under extreme thermal cycling.
The hard, glossy glaze coating offers good self-cleaning properties, reducing maintenance frequency. The line post pin design features a bottom thread M20 x 2.5, a bottom bore of Ø44 ±2 mm, an overall height of 432 ±15 mm, and a bottom metal base diameter of Ø138 ±3 mm.
Material: Porcelain, grey glaze
Product Type: Line post pin insulator design
Manufacturer: BONLE (MINQING) LOW VOLTAGE ELECTRIC CO., LTD.
Source File: 33PC drg Bonle.pdf
Standard Reference: CFE 52000-91 – Aisladores de porcelana tipo poste para líneas de distribución
(Porcelain post insulators for distribution lines)
CFE Standard Overview: 52000-91 – Technical requirements for acquisition and electromechanical characteristics
Standard Stated in Drawing: IEC 60383 / 60273
Note: The supplied drawing states IEC 60383 / 60273 as the applicable standard. The CFE reference above is provided as the applicable Mexican standard for porcelain line post insulators for distribution lines. The drawing text does not explicitly state grey glaze; this attribute is included based on the requested product description.
For CFE standard context, refer to the official CFE website. For related porcelain insulator options, see our porcelain insulators and suspension insulators. For general porcelain manufacturing standards, visit the International Electrotechnical Commission (IEC) and ASTM International.
H2: 33PC Line Post Pin Insulator Applications & Installation
The 33PC Line Post Pin Insulator is widely used in overhead power distribution lines, typically installed on crossarms and pole-mounted structures. It is ideal for:
- Overhead distribution line conductor support
- Crossarm-mounted applications
- Pole-top structures
- Line post and pin insulator applications in distribution networks
- CFE-standard distribution structures in Mexico
The line post pin design allows easy mounting using conductor tie wires or standard hardware, with bottom thread M20 x 2.5 and bottom bore Ø44 ±2 mm. Explore our full range of suspension insulators and transmission hardware for more options.
H2: 33PC Line Post Pin 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 33PC Line Post Pin Insulator requires minimal routine maintenance and delivers a long service life under normal operating conditions. Full testing procedures are detailed in CFE 52000-91, IEC 60383 / 60273, and related standards published by NEMA.
Every unit undergoes routine electrical and mechanical testing before dispatch, including visual inspection, dimensional checks, mechanical load tests, and high-voltage withstand tests. Design tests — such as dry flashover, wet flashover, critical impulse flashover, radio influence voltage, and thermal shock — are performed per the applicable standards on new designs.
Quality conformance tests including porosity, galvanizing, and cantilever-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.
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 33PC Line Post Pin 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 33PC Line Post Pin Insulator
When selecting a CFE-referenced porcelain insulator for your distribution project, quality and reliability are paramount. Our 33PC Line Post Pin 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 33PC Line Post Pin 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 33PC Line Post Pin Insulator is available with short lead times. Contact us today to learn how the 33PC Line Post Pin Insulator can enhance your distribution grid reliability.
Missing Information
The following items still require confirmation from a readable original PDF, drawing, or official datasheet:
- Figure No. (per drawing)
- Negative critical impulse flashover
- Dry arcing distance
- Net weight
- IRSACLAVE / IRSACOTAS
- Complete Sheet 2 of 2 data
- Additional marking / identification details
- Full packaging dimensions and gross weight
- IRSA Drawing Number (if applicable)
- Emission / Revision details
- Drawing approval details
- Confirmation of grey glaze from the original drawing
Note: If the original 33PC PDF contains graphical drawings or tables, please provide a text-readable version or clear images. The current supplied content confirms the main electrical, mechanical, dimensional, and standard data.
