What is a Stay Insulator?
Stay insulator is a type of strain insulators, it is widely used in medium and low voltage lines for rural and railway. Stay insulator is also called guy insulator or egg insulator.
The stay insulator is usually mounted in the middle of a stay wire or guy wire, and it can provide enough insulation for the utility pole and the stay clamp.
The insulator should be made of glazed porcelain according to BS137 and suitable for operation outdoors.
According to the voltage, there are 11kv stay insulators, 33kv stay insulator and LV stay insulators.
| ANSI CLASS |
54-1 |
54-2 |
54-3 |
54-4 |
| Dimensions, mm |
Height |
89 |
108 |
140 |
171 |
| Hole Centers Spacing |
44 |
57 |
79 |
67 |
| Inner Diameter |
44 |
54 |
60 |
60 |
| Outer Diameter |
64 |
73 |
86 |
89 |
| Hole Diameter |
16 |
22 |
25 |
25 |
| Height to Hole |
Max 63 |
Max 76 |
Max 103 |
Max 114.3 |
| Mechanical Failing Load, kN |
44 |
53 |
89 |
89 |
| Power Frequency Flashover Voltage |
Dry, kV |
25 |
30 |
35 |
40 |
| Wet, kV |
12 |
15 |
18 |
23 |
| Net Weight, kgs |
0.5 |
0.65 |
1.2 |
2.2 |
Factory Acceptance Tests:
- Measurement of Dimensions
- Electrical Test
- Mechanical Failing Load Test
Reliable Stay Insulator Manufacturer
So, where can I buy high quality stay insulators?
The best way is from a reliable stay insulator manufacturer in China.
The manufacturer and supplier should have adequate resources and capacity to supply the best stay insulators for overhead lines.
You should also check to see what other people are saying about the insulators from a particular manufacturer. This is possible by reading stay insulator reviews.
What if I want the specifications of the insulators to suit my stay wires?
You simply need to tell us, we will design custom insulator fittings based on your designs and drawings.
Why choose L&R?
1. L&R stay insulator is made from porcelain which is sound thoroughly vitrified.
2. L&R stay insulators are free from defects and blemishes. The defects will affect the lifetime of the insulator, l&R QC team will inspect 100%.
3. The process of making a stay insulator is by wet treatment on the porcelain. There should be non-porous with high fusion points during the production.
4. L&R stay insulator surface is smooth and uniform. The surface of the porcelain is free from irregularities and any rough particles.
What is a Stay Insulator?
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