IOS insulators – 35 kV Опорно-стержневой изолятор ИОС 35-500-01

Product Overview

The IOS-35-500-01 (ИОС-35-500-01) Porcelain Support Rod Insulator is designed for the insulation and mechanical support of live conductors in substations, switchgear, bus ducts, disconnectors, and power station equipment operating at voltages up to 35kV AC. Manufactured from high-strength electrical porcelain, it provides excellent electrical insulation, mechanical durability, and long-term outdoor performance.

The insulator is widely used in medium-voltage and high-voltage distribution systems throughout Russia, CIS countries, and international utility projects.

Key Features

• Rated voltage: 35kV
• High-strength electrical porcelain body
• Suitable for indoor and outdoor installations
• Excellent resistance to pollution and weathering
• High mechanical bending strength
• Long service life and low maintenance
• Designed for substations, switchgear, and busbar support systems

Characteristics of IOS-35-500-01 UHL1

Rated voltage, kV: 35
Creepage distance, mm: 700
Weight, kg: 14.2
Minimum mechanical breaking force for bending, kN
– Normalized according to GOST, and according to the factory specifications: 5
– Guaranteed by the factory: 7
– Actual test values:8.0…9.5
Minimum breaking torque, kN . m
– Standardized according to GOST: not standardized!
– Standardized according to the factory specifications:2
– Guaranteed by the factory: 3
– Actual test values: 3.5 … 4.0
Test voltage of full lightning impulse, kV: 190
One-minute test voltage with a frequency of 50 Hz in a dry state, kV: 95