The PSV 120B R 112V suspension glass insulator is designed for insulating and securing conductors and ground wires on overhead power lines, as well as in distribution devices of power plants and substations with alternating current voltage above 1000 V and frequency up to 100 Hz. The insulator operates in ambient temperatures from -60 °C to +50 °C and complies with the UHL 1 version according to GOST 15150. It is manufactured according to TU 3493-004-99267582-2009 and meets the requirements of GOST 6490-2017.

Technical specifications:

• Designation according to GOST 27661: PSV 120B R 112V
• Designation according to IEC 60305: U120BP
• Rated mechanical breaking load: 120 kN
• Rated mechanical residual breaking strength: 96 kN
• Nominal diameter of the insulating part: 280 mm
• Nominal structural height: 146 mm
• Nominal leakage path length: 445 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): 85 kV
• Withstand voltage at 50 Hz (wet): 50 kV
• Withstand voltage of standard lightning impulse: ±125 kV
• Nominal voltage at permissible radio interference level: 34 dB/kV at 10 kV; 55 dB/kV at 20 kV; 75 dB/kV at 30 kV; 80 dB/kV at 35 kV
• Weight: 5.7 kg