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 materials with great compressive strength, in Powertelcom stay insulator is made of high-quality porcelain.
| Class ANSI | 54-1 | 54-2 | 54-3 | 54-4 | |
| Fig | 1 | 1 | 1 | 2 | |
| Main
Dimensions(mm) |
H | 89 | 108 | 140 | 172 |
| h | 44 | 57 | 67 | 79 | |
| h1 | 64 | 76 | 103 | 114 | |
| D | 64 | 73 | 86 | 89 | |
| d | 44 | 54 | 60 | 60 | |
| d1 | 16 | 22 | 25 | 25 | |
| Mechanical Failing Load(KN) | 44 | 53 | 89 | 89 | |
| Creepage Distance (mm) | 41 | 47 | 57 | 76 | |
| Minimum Flashover
Voltage |
Power-frequency | 25 | 30 | 35 | 40 |
| 12 | 15 | 18 | 23 | ||
| Weight (KG) | 0.5 | 0.63 | 1.2 | 1.85 | |
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What is stay insulator?
The stay insulator is also named an egg insulator, it is used in the stay wire structure to keep the conductor a height from the ground. Stay insulator is used for low voltage applications.
How to use a stay insulator?
The stay insulator is made of porcelain, it is installed in the middle of the stay wire, which ends connect the utility pole and the ground. It provides insulation to the two parts.
Features of stay insulators
- For low voltage guy wire structure
- small size
- Great tensile strength
- Made of porcelain or ceramic