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AL402 电缆故障测试仪 Detecting instrument of cable fault

 

[艾尔电气  电缆故障测试仪  执行标准]



DL/T849.1-2004DL/T849.2-2004DL/T849.3-2004

 

 

[艾尔电气  电缆故障测试仪  产品简介]   

                                                                 

 

   该系统测试由系统主机和故障定位仪以及电缆路径仪三部分组成,用于电力电缆各类故障的测试,电缆路径、电缆埋设深度的寻测和电缆档案资料的日常维护管理,以及同轴通信电缆和市话电缆的开路、短路故障的精确测试。

 

[艾尔电气  电缆故障测试仪  产品特征]       

                                                               

 

1、国内首家采用工控嵌入式计算机平台系统。锂电供电、方便现场测试。
2、全电脑XP操作软件,配有电缆故障测试软件和电缆资料管理软件。
3、实现故障自动搜索,距离自动显示,双游标移动可精确到0.15米,。
4、波形可任意压缩、扩展,与标准的波形供比较分析,提高测试精度。
5、支持3G通信终端或无线 上网卡,实现专家远程现场实时测试与交流。
6、20G内存多类现场波形和现场实物接线图,轻轻一点即可使用。
7、关键的精确定点仪部分,直接数字显示测试者离故障点距离。
8、智能组合式采样器,取代了烦琐的现场接线,具有波形直观,容易分析,与高压完全隔离,对主机、操作人员绝对安全的特点。
9、高压放电部分可供选择,首创高频高压电源8.4kg替换65kg试验变压器和操作箱。
10、可测试35KV以下不同电压等级、截面、介质及各种材质的电力电缆的各类故障,
11、可测试铁路通信控制电缆、路灯电缆、机场信号电缆的各类故障。
12、可测量长度已知的任何电缆中电波传播的速度。
13、可测试电力电缆埋设路径及埋设深度。

[艾尔电气  电缆故障测试仪  产品参数] 

                                                                     

 

1、显示方式:12.1英寸工业级液晶屏(XP操作平台);   

2、测试方法:低压脉冲法、冲闪电流法、直闪电流法,操作方式:触摸屏、笔操作;

3、测试距离:不小于40km 最短测试距离(盲区):5-10米;

4、精确定点误差:±0.2m 测试误差:系统误差小于±1%

5、分辨率:V/fmV为传波速度m/μs;软件游标0.15米; 

6、仪器采样频率:6.25MHz10MHz25MHz50MHz100MHz、(自适应脉宽);

7、电源与功耗: AC 220V±10% 不大于15W DC 12V7AH不大于20W

8、待机时间:可连续使用4小时左右;

9、信号频率:15KHz正弦波;

10、输出功率:Pomax100W

11、输出阻抗:Zo=Zc(电缆特性阻率)

12、主机重量:9.8kg

13外形尺寸:180×300×400mm

 

[艾尔电气  电缆故障测试仪  产品选型]  

                                                                    

根据用户具体要求,设计相应的产品配置方案。

 

 

 

 

 

AL402 Detecting instrument of cable fault


Implementation of standards.

DL/T849.1-2004DL/T849.2-2004DL/T849.3-2004


Detecting instrument of cable fault analyzes, detects and pinpoints various faults of power cables such as short circuits, open circuit, high resistance flashover and high resistance leaking, etc. through modern detecting methods of DC HV flashover, inductance sampling of impulse HV, current sampling of impulse HV and low voltage impulse etc. In addition, FKDL instrument not only makes preliminary detection on short circuit faults and open circuit faults of controlling cable, city call cable and coaxial communication cable, but also collates total distance of cable.

 

Features

 

Applicable to test of various faults of copper-core and aluminum-core power cable and city call cable below 35kV. Velocity of common power cables including oil-immersed paper cable, cross-linking ethylene cable, non-draining cable and plastic cable is preset in equipment, and that velocity of some special cable can be temporarily preset with key on spot; there is no manual conversion of cable length and fault distance which is conversed by equipment automatically. Fault distance is displayed by equipment.

Applicable to test of open circuit and low resistance fault of various cables, and high resistance flashover fault and high resistance leaking fault of power cables.

Capable of auto analyzing simple fault waveform of open circuit and short circuit.

2 pieces of waveform can be displayed simultaneously on one screen (fault waveform, full view waveform), which is very convenient for user to analyze.

Panel micro-printer is installed in equipment.

Operating instruction is saved inside equipment.

Capable of onsite saving thousands of testing waveform, and no need to worry about power down.

Onsite waveform is copied and saved with 3.5 floppy drive in equipment for communication and discuss between customers and manufacturers.

Standardized design of software. Equipment software can be copied to any PC.

Having the function of velocity measurement (propagation velocity of electric wave in cable) and time measurement (echo time of fault point).

Capable of adopting test method of various kinds, no need to adjust equipment.

 

Technical parameters:

 

Test distance: single-ended test distance 10km

Min test distance (dead zone): less than V/15 (m) (whereby: V is propagation velocity of electric wave in tested cable)

Test accuracy

  Relative accuracy: ≤±2%

  Absolute accuracy: fault point within kilometers 15m, fault point kilometers away 20m

Reading resolution: V/60m

Whereby: V is propagation speed of electric wave in cable tested. For example, oil immersed paper cable, if propagation speed of electric wave is 160m/us, min reading resolution of equipment is 2.66m, then numerical reading varies 2.6m with shift of cursor.

Power source: AC 220V±10% 50HZ

Environment condition

    temperature0~50

   relative humidity80%±5%

Bulk of host machine: 350×250×200mm

Weight of host machine: 5kg