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CXM238直流接地故障查找儀

發布日期：2025-01-03
訪問次數：804
地址：上海寶山

CXM238直流接地故障查找儀：本儀表爲電力行業直流供電系統中線路漏電流和漏電阻的測量而設計，也可用于其他線路設備的阻抗測量和漏電流的測量。

訂購留言

CXM238直流接地故障查找儀

一、概述

本儀表爲電力行業直流供電系統中線路漏電流和漏電阻的測量而設計，也可用于其他線路設備的阻抗測量和漏電流的測量。

当线路有漏电时，可用主机发射一个低频1Hz 5V（可选择）的测量讯号到被测的母线和大地之间，这个低频测量讯号通过母线漏电点到地形成电流环路，其电流大小与漏电电阻成反比，本测量仪表，可真实地测出母线上漏电流和漏电电阻的大小，不受母线电容以及工频谐波的影响，其大测量电阻可达800kΩ，小漏电电流为0.01mA。

本儀表采用高導磁率合金探頭和精密的高靈敏度的數字測量放大器，並且用單片計算機進行計算和控制。本儀表設計選用1Hz的超低頻測量，排除了母線分布電容以及工頻50周及諧波的影響，達到0.01mA的測量靈敏度，現已與國內幾家電力儀表骨幹廠家主機配套使用，效果良好。現已在全國8個省市推廣使用。

CXM238直流接地故障查找儀

技術特點：

1、 24V 、 48V 、 110V 、 220V 直流系统共用一套直流接地探测器

2、可以克服电容干扰 , 准确无误地将故障锁定在小范围内。

3、信號輸出幅度及功率小，對繼電保護、自動、操作回路沒有影響，使用安全。

4、提供钳口 28mm电流钳。

5、能適應交、直流串電引起的接地，環網供電接地，二極管隔離供電接地。

6、不需要調試，使用方便；電池供電，低功耗。

7、不用安裝，不用停電，不用搖絕緣，就能快速准確找到一點或多點接地位置。

信號發送器技術參數：

1、直流系统母线电压范围：220V DC 、110V DC 、48V DC、24V DC；

2、输出信号电压与频率：5V， 1Hz；

3、功耗小于 01W 。

3、工作温度：-20 至 + 55°C

4、电源：8 节“ C ”型电池 (2号电池)

5、电池工作时间：大于 24 小时

6、尺寸： 21cm*15cm*7cm

7、重量： 1公斤

信號接收器（直流接地探頭）技術參數：

1、直流系统母线电压范围： 220V DC 、 110V DC 、 48V DC 、 24V DC ；

2、电流钳： 28mm 。

3、报警电流设置: 9个档

25k，16k, 12k,10k, 8k

6k , 5k , 3k, 2.5k。

4、接地电阻检测范围： 0 — 500 K Ω，分辩率 0.1K Ω , 精度 15% ± 2 K Ω。

5、接地电流检测范围：0～3.00mA ，分辩率0.01mA 。

6、功耗小于 0.1W

7、工作温度：-20 至 + 55°C

8、電源：AA電池4節6V

9、电池工作时间：大于 24 小时

10、尺寸：174 x86 x48 mm

11、重量：400g

附件:

（1）仪表测量钳头一副

（2）仪表防水尼龙包一个

（3）电池四节

（4）说明书一份

操作說明

1．鍵盤

POWER键：电源开关键

ALARM/SETUP键：报警电流设置键

發射電壓設置鍵

TEST/HOLD键：测量/显示锁定键

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