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Epoxy rods can be divided into two categories according to their classification: 1. Epoxy glass fiber rod, also known as pull rod, is generally used for main technical indicators of arrester or insulator core rod:
Firstly, let us learn something about epoxy fiberglass rod.
Properties of epoxy glass fiber rod：
- Shear strength is more than 32Mpa
- Dielectric constant 3-6
- Dielectric loss factor (50Hz) greater than or equal to 0.02
- Volume resistivity: the normal value is greater than or equal to the 11th power of 1.0 * 10, and the immersion value is greater than or equal to the 9th power of 1.0 * 10
- Insulation resistance in parallel direction 1. It is greater than or equal to the 11th power of 1.0 * 10 under normal condition, and it is greater than or equal to the 9th power of 1.0 * 10 under water immersion condition
- Surface withstand voltage (withstand voltage in air for 1 minute, spacing 30mm) 14 kV
- Vertical layer withstand voltage (withstand voltage in 90 + – 2 ℃ transformer oil for 5 minutes) 18-20 kV
- Parallel layer direction withstand voltage (withstand voltage in 90 + – 2 ℃ transformer oil for 5 minutes, with an interval of 25mm)
More than 25 kV
Over 50 kV
Over 75 kV
- The insulation resistance of green water epoxy insulation rodis more than or equal to the 4th power of 5 * 10
- Power frequency withstand voltage: distance between oil chamber of on load tap changer and ground (withstand voltage in transformer oil, 100mm). 5 minutes) phase to phase distance (according to customer’s technical requirements) greater than 85 kV
Models and specifications include:
Epoxy Round bar: Φ 18 Φ 24 Φ 26 Φ 28 Φ 30 Φ 32 Φ 34 Φ 36 Φ 40 Φ 45 Φ 50 Φ 53 Φ 55 Φ 60 Φ 63 Φ 70 Φ 80 Φ 90
Epoxy square bar: 10 * 24 10 * 22 10 * 30 20 * 30 20 * 20
The density is about 2.2g/cm3, and the length can be customized according to customers’ needs.
