The PS120B R 212V suspension glass insulator is designed for insulating and securing conductors and ground wires on overhead power transmission lines, as well as in distribution devices of power plants and substations with alternating current voltages above 1000 V and frequencies up to 100 Hz. The insulator operates in ambient temperatures ranging from -60 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: PS120B 212V
• Rated mechanical breaking load: 120 kN
• Rated mechanical residual breaking strength: 96 kN
• Nominal diameter of the insulating part: 255 mm
• Nominal structural height: 127 mm
• Nominal leakage path length: 330 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): 70 kV
• Withstand voltage at 50 Hz (wet): 40 kV
• Withstand voltage of standard lightning impulse: ±110 kV
• Nominal voltage at permissible radio interference level: 34 dB/kV at 10 kV; 55 dB/kV at 18 kV; 75 dB/kV at 30 kV; 80 dB/kV at 35 kV
• Weight: 3.9 kg