The PS70SS R 112W suspension glass insulator is designed for insulating and suspending conductors and ground wires at substations, power plants, and overhead transmission lines with both direct and alternating current. It is suitable for voltage classes above 1000 V with frequencies ranging from 50 to 100 Hz and operates within a temperature range of -60 °C to +50 °C. The insulator is manufactured according to TU 3493-004-99267582-2009.

Advantages:

• The increased leakage path length enhances the electrical strength of the insulator while maintaining its mechanical properties.
• Improved reliability of insulator strings under atmospheric and industrial pollution conditions, as well as fog.
• Potential reduction in the number of insulators in a string.

Technical specifications:

• Designation according to GOST 27661: PS70SS 112W
• Designation according to IEC 60305: U70BL
• Rated mechanical breaking load: 70 kN
• Rated mechanical residual breaking strength: 56 kN
• Nominal diameter of the insulating part: 255 mm
• Nominal structural height: 146 mm
• Nominal leakage path length: 415 mm
• Standard ball-and-socket coupling according to GOST 27396 (IEC 120-84): 16 mm
• Breakdown voltage in insulating medium: 130 kV
• Withstand voltage at 50 Hz (dry): 72 kV
• Withstand voltage at 50 Hz (wet): 42 kV
• Impulse flashover voltage in air: 265–290 kV
• Withstand voltage of standard lightning impulse: ±110 kV
• Nominal voltage at permissible radio interference level: 10 dB/kV at 34 kV; 18 dB/kV at 55 kV; 25 dB/kV at 75 kV; 30 dB/kV at 80 kV
• Weight: 4.2 kg