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The Large Ferris Wheel In The Outdoor Should Do The Comprehensive Lightning Protection Work From The Following Points
Jun 27, 2018

With the constant demand of people for entertainment and the increasing establishment of large outdoor ferris wheels all over the country, the lightning protection and grounding work of ferris wheels is particularly important

Generally speaking, at the technical level, it is divided into two protection methods for large amusement equipment, namely, external lightning protection and internal lightning protection.

Internal lightning protection mainly to prevent thunder electric wave invasion and lightning electromagnetic pulse to the ferris wheel and its annex of the electrical system, control system, weak current system (communication, monitoring, radio), damage and interference, to ensure the safety of equipment, visitors and staff. Adopting equipotential ground and applying surge protector are the main technical measures.

External lightning protection is mainly to prevent direct lightning strikes. Lightning protection system is composed of lightning arrester, lead off line and grounding device to directly discharge lightning to the earth. Lightning arrester can be used lightning belt, lightning rod and special lightning arrester, which kind to choose, according to the appearance and structure of amusement equipment to determine. The grounding device can make use of the reinforcement bars of the building foundation attached to the amusement equipment to form a grounding net. If there is no available one, an independent lightning protection grounding net should be installed. The network should cover the entire protected area and should be closed. This grounding network can be connected with the grounding of the electrical low voltage system and the grounding of the communication system, which constitutes the joint grounding device.

The core of internal lightning protection in equipotential grounding is an important technical measure. Therefore, it is the equipment of metal, metal parts of the building, into the structure of the metal pipe, and the metal of the cable protection tube, etc., must be connected to the lightning protection grounding device become a equipotential grounding system. In the case of equipotential grounding, the grounding resistance of lightning protection grounding device does not need to take into account the specific value requirements, but the equipotential grounding system must be reliable and complete. Equipotential grounding can reduce the contact voltage when the human body is shocked.

In terms of specific operations, there are also some regulations that remind people to pay attention to, among which this is particularly emphasized to users:

Technically, no absolute effective protection can completely avoid the impact of lightning strikes. Never run a ferris wheel in high winds or thunderstorms.

Lightning protection system design, installation is constrained by rules of their respective countries, users should according to amusement equipment installation area and meteorological conditions, the lightning frequency, surface state and the country's lightning protection laws and regulations, design and installation.

The manufacturer of ferris wheel amusement equipment can only supply the lightning arrester with the equipment when the customer asks for lightning protection and local weather conditions and geographical conditions.

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