Also called name

Partial discharge analysis system, partial discharge detection system, partial discharge tester, partial discharge test system, partial discharge ultrasonic automatic positioning system, partial discharge ultrasonic positioning system, partial discharge ultrasonic positioning system, ultrasonic partial discharge automatic positioning system

Main functions

The failure testing ａnd positioning of operating the medium ａnd large sized transformers have always been the points that electrical engineers focus for a long time. The NAJFXD system, manufactured in the large-sized transformer local discharge ultrasonic position method ａnd equipment research subject which is one of the national key scientific ａnd technological project has provided an effective solution.

The NAJFXD system has carried the ultrasonic measurement to the local discharge of the hundreds of transformers ａnd reactor in Gezhou Dam 500kV switch station, Wuhan Phoenix Mountain 500kV transformer substation, Shanghai transformer factory, Hefei transformer factory, Hengyang transformer factory, Guangzhou power supply bureau, Hunan electricity generating board, Chongqing transformers factory ａnd Wuhan steel. This system has the advantage of operation reliable ａnd easy to operate. It can meet the needs of measurement. As one of the key items of the of eight-five project, this electrical device has been widely used for the spot test ａnd research in the related unit in the north, east, central ａnd northwest parts of China.

The NAJFXD ultrasonic positioning system which is including the high performance computer, high-sensitivity local discharge sound probe, programmed amplified filter, high-speed A/D transducer, transient waveform recording, signal analysis ａnd fault location software is applied for acquiring, measuring, analyzing, positioning ａnd spot observing the local discharge ultrasonic signal in the large-sized transformer, oil-immersed high voltage electrical apparatus ａnd the GIS electrical operation equipment.

The NAJFXD ultrasonic positioning system can position the fault ａnd the error is less than 250mm. The whole measuring system can find out the local discharge ultrasonic signal which is less than 1000pC.

Main characteristics:

(1) Making the detecting operation of local discharge ultrasonic more convenient ａnd the analyzing more simple under the platform of the windows.

(2) Making the signal acquired more reliably for the ultrasonic sensor has the performance of low noise, high-sensitivity ａnd anti-jamming.

(3) Making the spot testing more flexible with the local discharge ultrasonic signal electrical-acoustical position ａnd acoustical-acoustical position functions

(4) Making the result of the position more precisely by choosing freely the spherical position calculation ａnd the hyperboloid position calculation of the ultrasonic signal.

(5) Showing the position coordinates by ultrasonic probe ａnd the locating point by solid geometric drawing.

(6) Convenient for building the measuring ａnd positioning database for further analyzing ａnd managing.

(7) Be the local discharge on-line detecting instrument which is useful for detecting the local generating ａnd developing.

Technical parameter:

The sensitivity of the ultrasonic probe: -150dB

A/D conversion accuracy: 8bit±1/2LSB

Sample length: 32k/channel

Minimum detectable discharge:＜50pC (laboratory)＜300(1000)pC (spot)

Minimum positional error:＜50mm(laboratory)＜ 250mm (spot)

NAJFB地铁巡线定位专用远程超声波巡检巡线装置

产品别名

地铁巡线定位仪，地铁超声定位仪，地铁远程专用超声巡检仪，巡线定位远程超声波巡检巡线装置，超声波巡检巡线装置，超声波地铁定位测量

一、产品概述

NAJFB地铁巡线定位专用远程超声波巡检巡线装置，主要适用于35kV以下的配网线路巡检，用于发现放电点故障。

二、功能及特点

（1）喇叭型聚能器接收的是一个面，扫到就能接收超声波信号，免除瞄准操作。

（2）具有车载巡线功能，车速在30~40迈的情况下，测试人员配戴耳麦，手持仪器在车的副座上开窗扫描公路或铁路一侧的配网线路即可。

（3）手式外型、非接触、可视化、可听并存储显示波形、放电波形可传输到后台，带电不接触检测。

（3）可应客户要求另外增加GPS定位功能。

（4）信号接收范围：*远可达50m。

（6）强度适中的绿色激光瞄准，阳光下人眼易跟踪。

（7）显示器可时时显示波形，并可存储有价值的波形。

（8）主要适用于35kV以下的配网线路巡检，也适合铁路上接触网的巡检。

（9）也可以对近距离的电缆头进行扫描。

（10）安全可靠，状态检修的好帮手。

三、技术指标

（1） 内置式超声波传感器。

（2） 显示：dB值，放电原始波形，电池状态。

（3） 喇叭型天线，主机内配快速扫描测试软件。

（4） 精确度：±1dB；

测量中心频率：40kHz±1kHz。

（5） 测量范围：-60～60dB，步长1dB。

（6） 激光瞄准器为绿色激光。

（7）豪华噪音衰减耳机，可配合使用安全帽。

（8）存储：可覆盖存储255次显示波形。

（9）电池：内置式锂电池，9V,500mA。

（10）环境温度：-20℃～55℃。

（11）外形尺寸及重量：尺寸：49×38×18cm ，重量：主机：1Kg， 整套设备：4Kg。