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| HY5WD-17.5/40氧化鋅避雷器HY5WD-13.5/31避雷器 聯系人：王總 聯系電話：0577-27880112 聯系手機：13362763534 簡述 氧化鋅避雷器是具有良好保護性能的避雷器。利用氧化鋅良好的非線性伏安特性，使在正常工作電壓時流過避雷器的電流極小（微安或毫安級）；當過電壓作用時，電阻急劇下降，泄放過電壓的能量，達到保護的效果。這種避雷器和傳統的避雷器的差異是它沒有放電間隙，利用氧化鋅的非線性特性起到泄流和開斷的作用。 介紹 氧化鋅避雷器測試儀介紹：采用微電腦進行采樣、控制等先進技術，可測量氧化鋅避雷器在工頻電壓下的全電流、三次諧波、阻性電流、阻性電流峰值、容性電流、有功功率等。 發展來源 氧化鋅避雷器是七十年代發展起來的一種新型避雷器，它主要由氧化鋅壓敏電阻構成。每一塊壓敏電阻從制成時就有它的一定開關電壓（叫壓敏電阻），在正常的工作電壓下（即小于壓敏電壓）壓敏電阻值很大，相當于絕緣狀態，但在沖擊電壓作用下（大于壓敏電壓），壓敏電阻呈低值被擊穿，相當于短路狀態。然而壓敏電阻被擊狀態，是可以恢復的；當高于壓敏電壓的電壓撤銷后，它又恢復了高阻狀態。因此，在電力線上如安裝氧化鋅避雷器后，當雷擊時，雷電波的高電壓使壓敏電阻擊穿，雷電流通過壓敏電阻流入大地，使電源線上的電壓控制在安全范圍內，從而保護了電器設備的安全。 1.按電壓等級分 氧化鋅避雷器按額定電壓值來分類，可分為三類； 高壓類；其指66KV以上等級的氧化鋅避雷器系列產品，大致可劃分為500kV、220kV、110kV、66kV四個等級等級。 中壓類；其指3kV～66kV（不包括66kV系列的產品）范圍內的氧化鋅避雷器系列產品，大致可劃分為3kV、6kV、10kV、35KV四個電壓等級。 低壓類；其指3KV以下（不包括3kV系列的產品）的氧化鋅避雷器系列產品，大致可劃分為1kV、0.5kV、0.38kV、0.22kV四個電壓等級。 2.按標稱放電電流分 氧化鋅避雷器按標稱放電電流可劃分為20、10、5、2.5、1.5kA五類。 3.按用途分 氧化鋅避雷器按用途可劃分為系統用線路型、系統用電站型、系統用配電型、并聯補償電容器組保護型、電氣化鐵道型、電動機及電動機中性點型、變壓器中性點型七類。 4.按結構分 氧化鋅避雷器按結構可劃分為兩大類； 瓷外套；瓷外套氧化鋅避雷器按耐污穢性能分為四個等級，Ⅰ級為普通型、Ⅱ級為用于中等污穢地區（爬電比距20mm/KV）、Ⅲ級為用于重污穢地區（爬電比距25mm/kV）、Ⅳ級為用于特重污穢地區（爬電比距31mm/kV）。 復合外套；復合外套氧化鋅避雷器是用復合硅橡膠材料做外套，并選用高性能的氧化鋅電阻片，內部采用特殊結構，用先進工藝方法裝配而成，具有硅橡膠材料和氧化鋅電阻片的雙重優點。該系列產品除具有瓷外套氧化鋅避雷器的一切優點外，另具有絕緣性能、高的耐污穢性能、良好的防爆性能以及體積小、重量輕、平時不需維護、不易破損、密封可靠、耐老化性能優良等優點。 5.按結構性能分 氧化鋅避雷器按結構性能可分為；無間隙（W）、帶串聯間隙（C）、帶并聯間隙（B）三類。 HY5WD-17.5/40氧化鋅避雷器HY5WD-13.5/31避雷器、、HY5WD-17.5/40氧化鋅避雷器HY5WD-13.5/31避雷器、HY5WD-17.5/40氧化鋅避雷器HY5WD-13.5/31避雷器、HY5WD-17.5/40氧化鋅避雷器HY5WD-13.5/31避雷器、HY5WD-17.5/40氧化鋅避雷器HY5WD-13.5/31避雷器、HY5WD-17.5/40氧化鋅避雷器HY5WD-13.5/31避雷器 英文翻譯： this Zinc oxide lightning arrester is a good protection lightning arrester performance. Using zinc oxide good volt-amper characteristics, that in normal working voltage when the current flows through lightning arrester tiny (microamps or milliamperes); When overvoltage effect, resistance fell sharply, let go of the voltage of the discharge energy, obtain protection effect. The lightning arrester and traditional lightning arrester the difference is it not the spark gap, using zinc oxide nonlinear characteristics and play the role of discharge open circuit. introduction Zinc oxide lightning arrester tester is introduced: sample by microcomputer control, advanced technology, can be used to measure the zinc oxide lightning arrester in industrial frequency voltage current, three times the harmonic current, resistance, resistance of sexual current peak, capacitive current, active power and so on. Development source Zinc oxide lightning arrester is developed in the seventy s a new type of lightning arrester, it mainly consists of zinc oxide pressure sensitive resistance constitutes. Every piece of pressure sensitive resistance is made from a certain it switching voltage (called thermistors), in the normal working voltage (i.e. less than pressure sensitive voltage) pressure sensitive resistance is very big, equivalent to insulation states, but in under the action of impulse voltage (more than pressure sensitive voltage), pressure sensitive resistance is low value is punctured, equivalent to short circuit state. However thermistors be hit state, is can be restored; When higher than pressure sensitive voltage after the cancellation of the voltage, it's back high impedance condition. Therefore, in a powerline such as the installation zinc oxide lightning arrester, when lightning, ray waves of high voltage make thermistors breakdown, lightning overvoltage sensitive resistance into the land circulation, make the power line voltage control in the security limits, and can protect the safety of the electrical equipment. 1. According to the voltage are rated by zinc oxide lightning arrester rated voltage value to classification, can be divided into three groups; High pressure classes; It refers to the level of 66 KV above zinc oxide lightning arrester series product, can be roughly divided into 500 KV, 220 KV, 110 KV, 66 KV four grade level. Medium voltage class; It refers to the three kV ~ 66 kV (not including 66 kV series products) within the scope of the zinc oxide lightning arrester series product, can be roughly divided into three kV, 6 kV, 10 kV, 35 kV voltage grade four. Low pressure classes; It refers to the following 3 KV (not including 3 KV series products) of zinc oxide lightning arrester series product, can be roughly divided into 1 KV, 0.5 KV, 0.38 KV, 0.22 KV voltage grade four. 2. According to the nominal discharge current points zinc oxide lightning arrester in nominal discharge current can be divided for 20, 10, 5, 2.5, 1.5 kA five categories. 3. According to utility cent zinc oxide lightning arrester can be divided according to use for the system with line type, type, with power station system in distribution, parallel, and series-parallel system of compensation capacitor group protection type, type, electrified railway electric motor and motor neutral type, type transformer neutral point of seven. 4. According to the structure points zinc oxide lightning arrester according to the structure can be divided into two major categories; Porcelain coat; Porcelain coat zinc oxide lightning arrester resistance performance according to uncleanness is divided into four grades, Ⅰ level common type, Ⅱ level for medium filthy area (creepage distance than 20 mm/KV), Ⅲ level used in heavy impurity area (creepage distance than 25 mm/KV), Ⅳ level used for higher in filthy (creepage distance than 31 mm/KV). Composite coat; Composite coat zinc oxide lightning arrester is using composite silicone rubber material do coat, and a high-quality zinc oxide resistors, internal adopts special structure, with advanced technology and method to assembly, with silicone rubber material and zinc oxide resistors of dual advantages. This series of products is in addition to coat zinc oxide porcelain all the advantages of lightning, and the other has the high resistance insulation performance, unclean performance, excellent explosion-proof performance and small volume, light weight, at ordinary times require less maintenance, not dilapidation easily, sealing is reliable, ageing resistance performance, etc. 5. According to the structure performance points zinc oxide lightning arrester according to the structure performance can be divided into; No clearance (W), take series clearance (C), with parallel clearance (B) three categories. |
