照明燈具十大品牌電線、電纜電氣設備用電纜江蘇電機引接線春晨電機引接線金南電機引接線

江蘇電機引接線春晨電機引接線金南電機引接線

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江蘇電機引接線春晨電機引接線金南電機引接線
  • 產品價格:¥10.00
  • 所屬行業:電工電氣 - 電線、電纜 - 電氣設備用電纜
  • 關 鍵 詞:電機引接線,高壓電機引接線,JFEM電機引接線,春晨電機引接線,JFEYH高壓電機引接xia,
  • 發布日期:2018/4/15 13:54:50
  • 聯 系 人:趙禮春
  • QQ咨詢:843499471
  • 所在地址:江蘇省 淮安市
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產品屬性

品牌春晨產品所在地江蘇
型號電機引接線可售數量10000件
生產廠家江蘇春晨電纜有限公司最少訂購量100件

產品詳情

江蘇春晨電纜有限公司生產江蘇電機引接線春晨電機引接線金南電機引接線,

電涌保護器的基本元器件及其工作原理

The basic components and working principles of surge protective devices.

1.放電間隙(又稱保護間隙)

1. discharge gap (also known as protective clearance)

它一般由暴露在空氣中的兩根相隔一定間隙的金屬棒組成(如圖15a),其中一根金屬棒與所需保護設備的電源相線L1或零線(N)相連,另一根金屬棒與接地線(PE)相連接,當瞬時過電壓襲來時,間隙被擊穿,把一部分過電壓的電荷引入大地,避免了被保護設備上的電壓升高。這種放電間隙的兩金屬棒之間的距離可按需要調整,結構較簡單,其缺點時滅弧性能差。改進型的放電間隙為角型間隙,它的滅弧功能較前者為好,它是*回路的電動力F作用以及熱氣流的上升作用而使電弧熄滅的。

It is usually made up of two metal bars exposed to a certain gap in the air (as in Figure 15a), in which a metal rod is connected to the power line L1 or zero line (N) of the required protection equipment and the other metal rod is connected to the grounding wire (PE). When the transient overvoltage strikes, the gap is penetrated and the charge of a part of the overvoltage is introduced. The earth avoids the voltage rising on the protected device. The distance between the two metal rods of the discharge gap can be adjusted according to needs, and the structure is relatively simple, and its arc extinguishing performance is poor. The improved discharge gap is angular gap, and its arc extinguishing function is better than that of the former. It is the electric F action of the loop and the rising effect of the hot gas flow to extinguish the arc.

2.氣體放電管江蘇電機引接線春晨電機引接線金南電機引接線

2. gas discharge tube

它是由相互離開的一對冷陰板封裝在充有一定的惰性氣體(Ar)的玻璃管或陶瓷管內組成的。為了提高放電管的觸發概率,在放電管內還有助觸發劑。這種充氣放電管有二極型的,也有三極型的,

It is made up of a pair of cold cathode plates which are separated from each other, which are encapsulated in glass tube or ceramic tube filled with a certain inert gas (Ar). In order to increase the trigger probability of the discharge tube, there is also a trigger agent in the discharge tube. The inflatable discharge tube has two pole type and three pole type.

氣體放電管的技術參數主要有:直流放電電壓Udc;沖擊放電電壓Up(一般情況下Up≈(2~3)Udc;工頻而授電流In;沖擊而授電流Ip;絕緣電阻R(>109Ω);極間電容(1-5PF)江蘇電機引接線春晨電機引接線金南電機引接線

The main technical parameters of the gas discharge tube are: DC discharge voltage Udc, impact discharge voltage Up (Up Udc (2~3) in general; power frequency and instruction current In; impact and teaching current Ip; insulation resistance R (>109); interpolar capacitance (1-5PF))

氣體放電管可在直流和交流條件下使用,其所選用的直流放電電壓Udc分別如下:在直流條件下使用:Udc≥1.8U0(U0為線路正常工作的直流電壓)江蘇電機引接線春晨電機引接線金南電機引接線

The gas discharge tube can be used under DC and AC conditions. The DC discharge voltage of Udc is as follows: under DC condition, Udc > 1.8U0 (U0 is the DC voltage of normal operation of the line).

在交流條件下使用:U dc≥1.44Un(Un為線路正常工作的交流電壓有效值)

Use in AC conditions: U DC = 1.44Un (effective value of Un for the normal operation of the circuit AC voltage)

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