The ground rod is an important part of the grounding device in the lightning protection grounding project. Due to the difference in material and production process, there are many types of ground rods. The following is an introduction to the main types of ground rods, their structure and installation methods.
Types of ground rods
1.Copper-clad steel ground rod (copper-plated ground rod)
2. Galvanized ground rod
3.Pure copper ground rod
4.Stainless steel ground rod
5.Electrolytic ion grounding
The structure of the ground rod
The main body of the ground rod is composed of an integrally formed steel core. The outer layer is fully combined with the coating and the steel core through an ultrasonic process, and some accessories such as Driving Stude , Couplers and Spike .
How to install and use the grounding rod
The grounding rod is very flexible during construction. Different construction methods can be used according to the specific conditions of the site, such as direct use of heavy hammers, electric picks and other equipment to drive into the soil; under complex soil conditions, the grounding rods cannot be penetrated, and can be drilled. Then install the ground rod.
When a heavy hammer is used for construction under uniform soil conditions, such as a single drive, a drill (anti-impact bolt) should be installed on the tip of the ground rod to avoid damage to the copper layer when the ground rod is drilled deep. In case of deep grounding, you can use connectors to connect multiple ground rods to the required length, so that the ground rods can achieve a good electrical connection effect.
When it is difficult to drill deep or cannot penetrate into the soil at all, it is necessary to use drilling tools such as electric, pneumatic and petroleum-driven machinery to drill through the rock.
After drilling, the following two methods can be used to install the ground rod:
Connect the ground rod to the required length with a connector, after drilling into the predetermined depth, backfill the resistance reducing agent and add water to the hole until the entire hole is filled with the resistance reducing agent. Connect the ground rod to the required length with a connector, drill into the predetermined depth, and then mix the resistance reducing agent and pour it into the hole to make it fully wrap the ground rod.
The above content is the more common types of ground rods on the market, their main components, and construction and installation methods.
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