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How to avoid lightning in the steam prepayment metering controller

hit count: Updated: 19/08/08 13:49:08 Source: cqcqyo.com [ close ] share:
    The steam prepayment metering controller system is to receive the metering data of the steam metering system and output and receive various digital quantities through the serial port at regular intervals to provide users with a data transmission network. In the hot summer, there are more thunderstorms and will be accompanied by With the generation of lightning, it is installed as an equipment made of metal material and it is easily damaged by lightning. Therefore, it is necessary to take lightning protection measures.
    1. The signal cable between the steam prepaid metering controller and the sensor must not be longer than 50 meters and must be sheathed with a galvanized pipe. If the galvanized pipe is in the air, the galvanized pipe needs to be reliably grounded with a wire.
    2. The steam prepaid metering controller lightning arrester ground wire is a multi-strand copper-core insulated wire that cannot exceed 1 meter in length and has a cross-sectional area greater than 6 mm square. If there is no ground network nearby, a simple ground network should be installed near the arrester. The specific method is as follows: Use three flat steel or angle steel with a length of 1.5 meters, arrange them in a regular triangle, and then drive into the ground. Three flat steels are welded together, and the lightning arrester ground wire can be connected after welding bolts in one of the corners.
    3. The power supply is 220v unidirectional AC power. An air switch is installed in the instrument box. The lightning arrester and the air switch are connected in parallel. The wire comes out of the air switch and is connected to a three-phase socket.
    4. Check whether the soil around the grounding device has subsided.
    5. External lightning protection (including lightning rods, lightning strips, down-conductors, ground electrodes, etc.) and internal lightning protection.
    For the steam prepayment metering controller to have a good lightning protection effect, the internal lightning protection measures to prevent inductive lightning and overvoltage and the external protection of the equipment body from lightning strikes are indispensable. The two complement each other. Escort for safe use.
    Editor: Nicki

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    Landline: 0533-2286657
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