Earthing & Lightning Protection
Why do I need to use a Lightning Counter?
The Lightning Counter is a device used to register the lightning impulse to identify how many strikes have taken place. It helps building managers, equipment maintenance companies and others keep a track of when the Lightning Protection system needs to be replaced including the Lightning Arrester, Down Conductors, etc.
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How does a Lightning Counter work?
In a Lightning Protection System, the down conductor connects the Air Terminal to the Earthing system in the ground. The lightning event counter is installed onto this down conductor to count the number of lightning strikes. When a lightning strike occurs and hits the Air Terminal, it will pass through the down conductor and down into the ground. The counter is connected in series with this down conductor to sense the lightning strike and the number of lightning strikes can be seen on the LCD display.
The counter comes with a built-in battery to power the counter. To reduce the power consumption & improve the battery life, the counter is facilitated with an automatic sleep mode feature & can be turned on using a remote.
Technical Specification
| Brand | : AXIS |
| Display Type | : Digital |
| Minimum threshold current rating | : 1 kA |
| Maximum current rating | : 100 kA |
| Impulse Waveform | : 8/20 μs |
| Counting range | : Up to 5 digit |
| Dimension | : Length: 80 mm; Width: 80 mm; Height: 50 mm |
| Degree of protection | : IP 65 |
| Power Source | : Battery (Replaceable) |
| Battery type | : Lithium-ion battery |
Selection of Counter Position
For selecting the counter position below points needs to be considered:
1. The Lightning event counter should be easy to access
2. The readings should be visible and clear at the mounted position
3. The counter should be positioned in places that are not prone to come in contact with moving objects
4. The counter should be located in places that are not prone to theft
Installation procedure
1. The first step is to unscrew the terminal connector for fixing the counter
2. Connect the down conductor from the Air Terminal to the Terminal Connector at the top of the counter and the conductor to the Earthing system or test link shall be connected to the terminal connector at the bottom of the counter using the provided bolt & nut in the terminal connector
3. The conductors can be directly tightened to the Terminal Connectors
4. The sleeve of the conductor should be removed and the bare copper core of the cable should be connected to the terminal connector
5. Ensure the tightness of bolt & nut in the terminal connection