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ZX17a型旋轉式交直流電阻箱

發布日期：2025-01-05
訪問次數：972
地址：上海寶山

ZX17a型旋轉式交直流電阻箱价格实惠，ZX17a旋转式交直流电阻箱在交流或直流电路中作可调电阻用，也可作电桥桥臂使用，是电学测量和电学实验中常用的仪器。电阻箱适用于周围空气温度＋5～＋45℃及相对湿度小于80%的环境下使用.

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ZX17a型旋轉式交直流電阻箱主要技術指標

1、調整範圍

ZX17-1为（0～9）（ 0.1+1+10+100+1000+10000）Ω

ZX17a为（0～10）（0.1+1+10+100+1000+10000）Ω

2、二者的額定功率爲0.5W，各盤電阻允許流過的電流見表1：

步進Ω	10000	1000	100	10	1	0.1
電流A	0.007	0.022	0.07	0.22	0.7	1

3、電阻箱的准確度：在溫度範圍:15℃～25℃、濕度範圍≤80%

的條件下，ZX17-1型交直流電阻箱誤差符合表2規定：

步進Ω	10000	1000	100	10	1	0.1
誤差%	0.1%	0.1	0.2	0.5	2	5

ZX17a型旋轉式交直流電阻箱誤差符合表3規定：

步進Ω	10000	1000	100	10	1	0.1
誤差%	0.1	0.1	0.2	0.5	2	5

4、零值電阻：30±5mΩ，變差小于2mΩ。

5、零值電感不超過2微亨。

6、電阻箱可在0—10kHz音頻範圍使用。因頻率引起變差小于0.1%。

7、電阻箱時間常數不大于表4所列數據：

步進Ω	10000	1000	100	10	1	0.1
時間常數μs	3	0.75	0.15	0.15	0.25	1

8、電阻箱電氣線路與屏蔽間能承受頻率爲50赫茲，2000伏交流電電壓的作用，曆時1分鍾不擊穿。

9、電阻箱電氣線路與屏蔽絕緣電阻不小于1000兆歐。

ZX17a旋轉式交直流電阻箱價格實惠結構概述

ZX17-1型、ZX17a型交流/直流电阻箱，用不同规格的锰铜丝，在瓷管骨架上绕制成大小不同、准确稳定的电阻线圈，分别安装在6个十进开关上，串联构成一个十进制6位数的电阻箱，通过引出端钮与外电路连接。使用时可调节各个开关以获得不同数值的电阻值。上述所有开关、电阻及引出端钮均安装在金属面板上。面板与箱体内壁的金属膜贴层构成屏蔽系统，面板上标有接地符号的接线柱是为了把屏蔽系统与大地相连接。电阻箱的原理线路图如下：

ZX17a旋轉式交直流電阻箱價格實惠使用注意事項：

1、使用電阻箱前，應先

旋轉一下各個旋鈕，以使

電刷接觸穩定可靠。

2、電阻箱在使用中絕不

應超過表1規定額定功率

和額定電流。

3、電阻箱應放在有遮蔽

的房間內，空氣溫度+5～

45℃，相對濕度在80%以下，周圍不應含有能引起腐蝕的有害氣體

上一篇：ZX17-1型旋轉式交直流電阻箱

下一篇：ZX21/ZX21a/b/c/d/e/f/g直流標准可調電阻箱

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