
Clevis type suspension porcelain insulators( ANSI Class ) |
ANSI Class |
52-1 |
52-4 |
52-6 |
52-9 |
52-10 |
Coupling size |
Type B |
Type B |
Type J |
Type B |
Type K |
Dimensions |
Diameter(D) |
mm |
165 |
254 |
254 |
121 |
280 |
Spacing(H) |
mm |
140 |
146 |
146 |
159 |
165 |
Creepage distance |
mm |
178 |
320 |
320 |
178 |
380 |
Mechanical Values |
combined M&E strength |
kN |
44 |
67 |
111 |
44 |
178 |
Dry arcing distance |
mm |
114 |
197 |
197 |
102 |
216 |
Impact strength |
N.m |
5 |
6.2 |
10 |
5 |
11.3 |
Routine proof test load (Maximum working load) |
kN |
22 |
33.5 |
55.5 |
22 |
89 |
Time load test value |
kN |
27 |
44.5 |
67 |
27 |
107 |
Electrical Values |
Low frequency dry flashover voltage |
kV |
60 |
80 |
80 |
60 |
80 |
Low frequency wet flashover voltage |
kV |
30 |
50 |
50 |
30 |
50 |
Critical impulse flashover voltage,positive |
kV |
100 |
125 |
125 |
100 |
125 |
Critical impulse flashover voltage,negative |
kV |
100 |
130 |
130 |
90 |
130 |
Low frequency puncture voltage |
kV |
80 |
110 |
110 |
80 |
110 |
Radio influence Voltage Data |
Test voltage RMS to ground |
kV |
7.5 |
10 |
10 |
7.5 |
10 |
Maximum RIV at 1000kHz |
μv |
50 |
50 |
50 |
50 |
50 |
Packing and Shipping Data |
Net weight,approximate |
kg |
2.5 |
4.8 |
5.5 |
2.6 |
8.1 |
52-9 disc-shaped suspension porcelain insulator is a commonly used insulation device in high-voltage transmission lines. For example, it has high mechanical strength and the ceramic material itself is hard, suitable for bearing mechanical loads, which is important for high-voltage transmission lines. In terms of weather resistance, porcelain can resist ultraviolet rays, rainwater, and temperature changes, which are key factors for outdoor insulators. In terms of electrical performance, high dielectric strength and arc resistance ensure safe operation under high voltage.
The maintenance cost is low because ceramic materials are not prone to aging and do not require frequent replacement, which saves costs for power companies. In terms of structural design, multiple insulators can be connected in series to adapt to different voltage levels and have good flexibility. Long lifespan, usually several decades, and good economic efficiency. In terms of environmental protection, ceramic materials are recyclable and will not have pollution problems like composite materials.