Lightning protection grounding high lamp needs to be done. Direct lightning lightning contains a great deal of energy, peak voltage is 5000 kv lightning defined, has a great destructive power. Will impact the following three: the huge rich current flow in a few microseconds time, make the earth potential quickly
high lamp' Light, generally refers to more than 15 meters steel conical light pole and high-power modular fixtures are composed of new type of lighting. 】 You need to do to grounding. Direct lightning lightning contains a great deal of energy, peak voltage is 5000 kv of lightning current 【 Refers to the direct lightning strike, by click the object, and discharged into the current of the earth. 】 Into the ground, has a great destructive power. Will impact the following three: the huge rich current flow in a few microseconds time, make the earth potential 【 Ground potential refers to a geographical area, the shallow earth surface potential, it is a common reference potential in a geographical area. 】 Quickly pick up high, cause against accidents, personal and equipment safety.
( 1) Lightning current to produce a strong electromagnetic wave in the power cord and signal lines induced high pulse voltage 【 Refers to the brief of voltage or current mutation, common pulse shapes are rectangle pulse, square wave pulse, spike, sawtooth pulse, step pulse, intermittent sine pulse, etc. , pulse voltage is paroxysmal and discontinuity. Pulse voltage waveform is square wave, similar to person's pulse beats! 。 。 。 】 。
( 2) Lightning current flows through the electrical equipment to produce high quantity of heat, fire or explosion accidents.
( 3) Frequent discharge between induction thunder clouds produce powerful electromagnetic wave leads to common mode and differential mode interference 【 Differential mode interference refers to the interference voltage exists in the signal and the loop ( Commonly referred to as the signal ground) Between the interference current loop is flowing in the conductor and constitute of the reference object loop. 】 , affect electric equipment operation. High lamp switching overvoltage of inductive and capacitive load in power system short circuit turned on or off, the ends of the earth short circuit, power circuit, etc. , can be in the way of the power cord to produce solar street light quotation with high pressure pulse, pulse voltage can be up to 3 to 5 times the normal voltage, can be severe damage to equipment. Destroy the effect is similar to a lightning strike.
1. After ShanQi 【 The surge arrester grounding system. 】
now high lamp manufacturers generally LED light, 【 The LED light is used for highway, roads and other places of a lamp. 】 Outside is conductor material, itself is the equivalent of a lightning rod [ Lightning, and lightning protection needle, is used to protect buildings, tall trees, etc to avoid lightning device. 】 That meet ShanQi. So when lightning occurs around the high lamp light pole, if there is no higher than high lamp light pole conductor ( Trees, etc. ) In high lamp light pole, can guide lightning and high lamp light pole ontology through the device, the lightning grounding device to underground, avoid the equipment damage and personal safety accident.
2. The device