Three-umbrella type (AC):
The Parameters of Three-shells Type (AC) Toughened Glass Suspension Insulator (GB & IEC)

Type | Diameter D (mm) | Spacing H (mm) | Creepage Distance L (mm) | Mechanical Failing Load (kN) | Size of Coupling (mm) | Mechanical Routine Test (kN) | Power Frequency withstand Voltage (Dry)(kV) | Power Frequency withstand Voltage (Wet)(kV) | Lighting Impulse Withstand Voltage (kV) | Implulse Withstand Voltage (p.u.) | Min Power Frequency Puncture Voltage(kV) | Radio Interference Voltage 10KV,1MHz (μV) | Corona Test (pin ∩) (kV) | Power Frequency Electric Arc Test | Net Weight Per Unit(kg) |
UG160B170/550T 20R | 330 | 170 | 550 | 20 | 160 | 80 | 85 | 50 | 130 | 2.8 | 130 | ≤50 | 18/22 | 0.12s/20kA | 8.9 |
UG210B170/550T 20R | 330 | 170 | 550 | 20 | 210 | 105 | 85 | 50 | 130 | 2.8 | 130 | ≤50 | 18/22 | 0.12s/20kA | 10.2 |
UG300B195/550T 24R | 330 | 195 | 550 | 24 | 300 | 150 | 85 | 50 | 130 | 2.8 | 130 | ≤50 | 18/22 | 0.12s/20kA | 11.3 |
UG300B195/635T 24R | 380 | 195 | 635 | 24 | 300 | 150 | 100 | 60 | 130 | 2.8 | 130 | ≤50 | 18/22 | 0.12s/20kA | 15.3 |
UG420B205/635T 28R | 400 | 205 | 635 | 28 | 420 | 210 | 110 | 65 | 130 | 2.8 | 130 | ≤50 | 18/22 | 0.12s/20kA | 16.5 |
UG550B240/635T 32R | 400 | 240 | 635 | 32 | 550 | 275 | 110 | 65 | 130 | 2.8 | 130 | ≤50 | 18/22 | 0.12s/20kA | 17.5 |
Three-umbrella type (DC):The Parameters of Three-shells Type (DC) Toughened Glass Suspension Insulator (GB & IEC)

Type | Diameter D (mm) | Spacing H (mm) | Creepage Distance L (mm) | Mechanical Failure Load (kN) | Size of Coupling (mm) | Mechanical Routine Test (kN) | Anodic DC Power Dry Withstand Voltage(kV) | Anodic DC Power Wet Withstand Voltage(kV) | Lighting Impulse Withstand Voltage (kV) | Implulse Withstand Voltage (p.u.) | SF6 Puncture Withstand Voltage(kV) | Radio Interference Voltage 10KV,1MHz (μV) | DC Corona Test (pin ∩) (kV) | Net Weight Per Unit(kg) |
DCUG160B170/550T 20R | 330 | 170 | 550 | 20 | 160 | 80 | 140 | 55 | 140 | 2.8 | 210 | ≤50 | ≥50 | 8.9 |
DCUG210B170/550T 20R | 300 | 170 | 550 | 20 | 210 | 105 | 140 | 55 | 140 | 2.8 | 210 | ≤50 | ≥50 | 10.4 |
DCUG300B195/550T 24R | 330 | 195 | 550 | 24 | 300 | 150 | 150 | 60 | 140 | 2.8 | 225 | ≤50 | ≥50 | 11.3 |
DCUG300B195/635T 24R | 380 | 195 | 635 | 24 | 300 | 150 | 150 | 60 | 155 | 2.8 | 225 | ≤50 | ≥50 | 15.3 |
DCUG420B205/635T 28R | 400 | 205 | 635 | 28 | 420 | 210 | 150 | 65 | 155 | 2.8 | 225 | ≤50 | ≥50 | 17.5 |
DCUG550B240/635T 32R | 400 | 240 | 635 | 32 | 550 | 275 | 160 | 70 | 155 | 2.8 | 225 | ≤50 | ≥50 | 18.8 |