The ShF-20G insulator is designed for insulating and securing conductors on overhead power lines (OHL) and in distribution devices of power plants and substations with alternating current voltages up to 20 kV and frequencies up to 100 Hz. Operation is possible in ambient temperatures ranging from -60 °C to +50 °C.

Technical Specifications:

• Rated voltage: 20 kV
• Minimum bending breaking load: 13 kN
• Leakage distance: at least 400 mm
• Power frequency withstand voltage (50 Hz) in dry conditions: 85 kV
• Power frequency withstand voltage (50 Hz) under rain: 65 kV
• Impulse withstand voltage: 125 kV
• Flashover voltage in insulating medium: 180 kV
• Operating temperature range: from -60 °C to +50 °C
• Pin diameter for insulator mounting: 22 mm
• Dimensions (diameter × height): 175 mm × 184 mm
• Weight: 3.6 kg

The insulator complies with the requirements of GOST 1232-93 and DSTU 2202-93. The insulating part is made of ceramic electrical porcelain of subgroup 110 according to GOST 20419-83. Installation is carried out on pins and hooks with a diameter of 22 mm using polyethylene sealing caps. The conductor is secured in the groove or on the neck of the insulator.