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ZX83型直流電阻器

發布日期：2025-01-05
訪問次數：973
地址：上海寶山

ZX83型直流電阻器爲六個串聯的十進電阻開關組組成多
值電阻器。電阻元件均接于開關上各個觸點之間，兩接線柱之間的電阻值可以通過改變開關電刷位置而使其阻值改變。
開關采用絕緣塑料制成，不需要清洗，接觸壓力小，變差小，壽命長。電阻元件均采用優質合金線以無感繞制，並經過嚴格的工藝處理，穩定性高。電阻器可在水平和垂直方向使用。

訂購留言

一、電阻器的結構和特點
ZX83型直流電阻器爲六個串聯的十進電阻開關組組成多
值電阻器。電阻元件均接于開關上各個觸點之間，兩接線柱之間的電阻值可以通過改變開關電刷位置而使其阻值改變。
ZX83型直流電阻器開關采用絕緣塑料制成，不需要清洗，接觸壓力小，變差小，壽命長。電阻元件均采用優質合金線以無感繞制，並經過嚴格的工藝處理，穩定性高。電阻器可在水平和垂直方向使用。
二、用途
1、適合于工廠、學校和科研單位作電測量和其它實驗用；
2、供直流電路中作精密調節電阻用；
3、可供整機校驗攜帶式直流電橋等。
三、電阻器主要技術指標
1、電阻器的阻值調節範圍：O—ll.lllOMΩ
2、電阻器的參考溫度和標稱溫度範圍：
參考範圍：20±l℃
標稱範圍：20±10℃
3、電阻器的參考相對濕度和標稱範圍：
參考範圍：40%～60%
標稱範圍：25%～75%
4、在參考溫度、相對濕度和功率的條件下，每只十進盤的准確度應符合下表規定。

5、温度和功率在参考条件下，相对湿度超过参考范围但在标称范围之内，由于相对湿度引起的附加误差允许为相应一个等级指数。
6、相對濕度和功率在參考條件下，溫度超過參考範圍，但在標稱範圍之內，由于溫度引起的附加誤差允許爲相應一個等級指數。
7、ZX83型電阻器的參考、標稱和極限功率電壓如下表規定。
8、溫度、相對濕度在參考條件下，功率超過參考功率範圍，但在標稱功率範圍內，由于功率引起的附加誤差允許爲相應一個等級指數，ZX84型電阻器，能經受2小時極限功率作用，當電阻器恢複到參考條件時，施加極限功率作用前後的電阻器實際變化不應超過相應一個等級指數的10%。
9、电阻器由于每只开关的变动而引起的电阻值变化不应超过2.5m Ω。

10、电阻器的残余电阻及公差R 0 =(13±10) mΩ。
11、电阻器在参考条件下，电路对外壳金属之间的绝缘电阻应≥1000MΩ 。

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