SHF20UO Pin-Type Porcelain Insulator (ШФ20УО) – High-Voltage 20kV Overhead Line Insulation Solution for Russian & CIS Markets
The SHF20UO (ШФ20УО) pin-type porcelain insulator is a robust and dependable solution for insulation and conductor support in 20kV overhead transmission and distribution lines. Manufactured by Bonle (Fujian) Insulator Co., Ltd., the SHF20UO insulator is designed to meet IEC 60383-1 Insulators for overhead lines with a nominal voltage above 1 000 V – Part 1: Ceramic or glass insulator units for a.c. systems, and fully complies with the interstate standard GOST 12320017 Porcelain and Glass Pin-Type Insulators for Voltage from 1 to 35kV. General Specifications. This ensures seamless integration into power networks requiring 20kV insulation solutions.
The SHF20UO features a brown glaze finish, providing excellent weather resistance and long-term durability in outdoor environments.
SHF20UO Pin-Type Porcelain Insulator Technical Specifications
| Parameter | Value |
| Rated System Voltage | 20 kV |
| Creepage Distance | 325 mm- |
| Power Frequency Withstand Voltage (Dry) | 85 kV |
| Power Frequency Withstand Voltage (Wet) | 65 kV |
| Lightning Impulse Withstand Voltage | 135 kV |
| Power Frequency Puncture Voltage | 180 kV |
| Mechanical Failing Load (Bending) | ≥13 kN |
| Main Dimensions (D × H) | 170mm × 196mm |
| Rod Diameter | 22 mm |
| Weight | Approx. 3.5–3.88 kg |
| Glaze Color | Brown |
| Climatic Performance | –60°C to +50°C |
SHF20UO Pin-Type Porcelain Insulator Key Features
Superior Electrical Performance – The SHF20UO insulator delivers a dry power frequency withstand voltage of 85 kV, wet power frequency withstand voltage of 65 kV, lightning impulse withstand voltage of 135 kV, and puncture voltage of 180 kV, guaranteeing safe and reliable operation of 20kV lines even under rain, fog, and lightning conditions.
High Mechanical Strength – With a minimum bending failing load of 13kN, the insulator reliably withstands conductor tension, wind loads, and ice accretion, ensuring long‑term stability in overhead line installations.
Excellent Anti‑Pollution Flashover Performance – The creepage distance of 325mm effectively increases leakage distance, reduces the risk of pollution flashover, and is particularly suitable for industrial, desert, and coastal areas with high contamination levels.-
Simple Structure, Easy Installation – The pin‑type insulator features a porcelain body and a steel pin (or threaded insert) cemented with high‑strength Portland cement. The top groove design facilitates convenient conductor placement and binding, reducing pole height and installation time.-
Brown Glaze Finish – The insulator features a durable brown glaze that provides excellent weather resistance, UV protection, and self-cleaning properties, ensuring long-term performance in harsh outdoor environments.
Wide Climatic Adaptability – Designed for ambient temperatures ranging from –60°C to +50°C, making it ideal for the extreme climatic conditions found across Russian and CIS territories.
SHF20UO Pin-Type Porcelain Insulator Application Scenarios
The SHF20UO high‑voltage pin‑type insulator is ideal for:
- Insulation and conductor support in 20kV overhead distribution and transmission lines–
- Outdoor installations with ambient temperatures ranging from –60°C to +50°C
- AC overhead power lines with frequencies not exceeding 100Hz
- Power transmission and distribution networks in normal, polluted, and high‑altitude areas
- SIP-3 insulated wire overhead lines and switchgear of power plants and substations-
SHF20UO Pin-Type Porcelain Insulator Standards Compliance
| Standard | Description |
| IEC 60383-1 | Insulators for overhead lines with a nominal voltage above 1 000 V – Part 1: Ceramic or glass insulator units for a.c. systems – Definitions, test methods and acceptance criteria |
| GOST 12320017 | Porcelain and glass pin‑type insulators for voltage from 1 to 35 kV. General specifications (IEC 60383-1:1993, NEQ) |
Why Choose SHF20UO Pin-Type Porcelain Insulator for Your Power Grid?
- Full IEC and GOST compliance – ensures smooth acceptance by grid operators and regulatory bodies worldwide-11
- Enhanced impulse performance – with 135kV lightning impulse withstand voltage, providing superior protection against surge events
- Proven reliability – engineered with high mechanical strength and robust electrical performance
- Cost‑effective – high performance at competitive pricing, reducing total project costs
- Robust design – engineered to withstand harsh climatic conditions, from extreme cold (–60°C) to high humidity
- Lightweight construction – approximate weight of 3.5–3.88 kg facilitates handling and installation
About the SHF20UO Pin-Type Porcelain Insulator Manufacturer
Bonle (Fujian) Insulator Co., Ltd., established in 2006, is located in Baizhong Industrial Zone, Minqing County, Fujian Province, China. The company specializes in the production of high and low voltage electrical porcelain products, including disc suspension insulators, anti‑pollution disc suspension insulators, pin insulators, post insulators, porcelain cross‑arm insulators, and over a hundred other products across dozens of series. All products undergo rigorous electrical and mechanical testing before shipment, ensuring the highest quality standards.
Model: SHF20UO (ШФ20УО) | Standards: IEC 60383-1, GOST 12320017 | Rated Voltage: 20 kV | Manufacturer: Bonle (Fujian) Insulator Co., Ltd.
Useful Links (replace with your actual URLs)
- Product Catalog – browse our full range of insulators
- Technical Datasheet – download detailed specifications and drawings
- Request a Quote – get pricing and availability for your project
- Certifications & Compliance – view our quality and testing certificates
For technical inquiries, bulk orders, or customized solutions, please contact our sales team via the links above.
H2: SHF20UO Pin-Type Porcelain Insulator References & Authoritative Resources
For certification, standard compliance, and procurement specifications, refer to:
- International Electrotechnical Commission (IEC) – global standards for electrical insulators and porcelain manufacturing.
👉 IEC Homepage - Full Range of Suspension Insulators – explore our complete product portfolio for transmission and distribution lines.
👉 Suspension Insulators Collection - GOST 12320017 – Porcelain and glass pin-type insulators for voltage from 1 to 35 kV. General specifications
- Insulator String Assembly Guide – installation best practices, string design, and torque specifications.
👉 Assembly Guide
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