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深圳波紋電阻設計原理 波紋電阻材質介紹 波紋電阻特點有哪些 威源供
被漆功率瓷管電阻器Coated High Power Ceramic Tube Resistors HR series
■過負荷能力強，熱穩定性好，使用壽命長Good overload and heat-durability capacity,the use life is longer then the others.
■表面涂漆為綠色不然性面漆 The resistors surface is
coated in green.
阻值及阻值誤差
Resistance and Resistance tolerance
阻值允許誤差
Resistance tolerance
±5% (J)
阻值將根據如下表格中所施加的電壓值后進行測量。Resistance shall be measured using the applied voltage values of the following table.
Nominal resistance range
公稱阻值范圍(Ω)
Maximum applied voltage
印加電壓(比較高值)(V)
R<1
0.1
100K≤R<30M
30
溫度系數
Temperature coefficient
±300ppm
在常溫及常溫+100℃時分別測量電阻并計算每度的阻值變化率。Test the resistance value at normal temperature and normal temperature added 100℃,calculate per℃ resistance value change rate .
額定功率
Power rating load
△R/R≦± (1%＋0.05Ω)
表面溫升(temperature) 350℃Max.
在受試電阻上加30分鐘的額定電壓the power rating is applied to the resistor kept horizontally for 30 min.
短時間過負荷
Short-time overload
△R/R≦± (2%+0.05Ω)
10倍額定電壓測試5秒。At 10× rated voltage for 5 seconds.
絕緣阻值
Insulation resistance
≥100MΩ
DC500V
絕緣電壓
Dielectric withstanding voltage
無火花、燒損或絕緣破壞等異常現象。
Without damage by
flash-over, fire. or
breakdown, etc.
≥AC2000V，60秒（sec.）
端子強度
Terminal strength
無機械損傷
no evidence of mechanical damage
張力(Pull)：196N ， 30± 5 秒seconds
電阻體強度
Resistor strength
無機械損傷
no evidence of mechanical damage
294N，30± 5秒seconds
■耐候性Environmental charactaristics
特性
Characteristics
規格值
Standards
測試方法
Test methods
耐熱性
Heat resistance
△R/R≦± (1%+0.05Ω)
在375±10℃錫爐中浸2~3秒
Immerge into 375±10℃ tin stove for 2~3 seconds.
熱沖擊
Thermal shock
△R/R≦± (2%+0.05Ω)
-55℃/30分鐘（min.）→+25℃/15分鐘（min.）→+125℃/30分鐘（min.）→+2515分鐘（min.
共5個循環 total 5 cycles.
耐溫負荷壽命
Power rating load
△R/R≦± (5%+0.05Ω)
在溫度為40±2℃，相對濕度為90~95%的恒溫恒濕箱中，施加額定電壓或比較大工作電壓（取較小者）共1000小時（通1.5小時，斷0.5小時）。Overload rated voltage or Max.working voltage (get the lower) for 1000 hours (1.5 hours on and half-hour off ) at the 40±2℃ and 90~95% relative humidity.
耐溫負荷壽命
Load life in heat
△R/R≦± (5%+0.05Ω)
在70±2℃恒溫恒濕箱中施加額定電壓或比較大工作電壓（取較小者）1000小時（通1.5小時，斷0.5小時）。Overload rated voltage or Max.working voltage (get the lower ) for 1000 hours (1.5 hours on and half-hour off) at the 70±2℃.
備注Note：具體規格尺寸可以根據客戶的需求制作,同時也可以制作一管多個阻值，也可按客戶要求取消固定支架。We can according to customer’s requirement to customize the specification and dimension, also can produce multiple resistance values of one ceramic tube or cancel the fixed plank
