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地鐵巡線定位專用遠(yuǎn)程超聲波巡檢巡線裝置

產(chǎn)品別名

地鐵巡線定位儀，地鐵超聲定位儀，地鐵遠(yuǎn)程專用超聲巡檢儀，巡線定位遠(yuǎn)程超聲波巡檢巡線裝置，超聲波巡檢巡線裝置，超聲波地鐵定位測(cè)量

一、產(chǎn)品概述

NAJFB地鐵巡線定位專用遠(yuǎn)程超聲波巡檢巡線裝置，主要適用于35kV以下的配網(wǎng)線路巡檢，用于發(fā)現(xiàn)放電點(diǎn)故障。

二、功能及特點(diǎn)

（1）喇叭型聚能器接收的是一個(gè)面，掃到就能接收超聲波信號(hào)，免除瞄準(zhǔn)操作。

（2）具有車(chē)載巡線功能，車(chē)速在30~40邁的情況下，測(cè)試人員配戴耳麥，手持儀器在車(chē)的副座上開(kāi)窗掃描公路或鐵路一側(cè)的配網(wǎng)線路即可。

（3）手式外型、非接觸、可視化、可聽(tīng)并存儲(chǔ)顯示波形、放電波形可傳輸?shù)胶笈_(tái)，帶電不接觸檢測(cè)。

（3）可應(yīng)客戶要求另外增加GPS定位功能。

（4）信號(hào)接收范圍：*遠(yuǎn)可達(dá)50m。

（6）強(qiáng)度適中的綠色激光瞄準(zhǔn)，陽(yáng)光下人眼易跟蹤。

（7）顯示器可時(shí)時(shí)顯示波形，并可存儲(chǔ)有價(jià)值的波形。

（8）主要適用于35kV以下的配網(wǎng)線路巡檢，也適合鐵路上接觸網(wǎng)的巡檢。

（9）也可以對(duì)近距離的電纜頭進(jìn)行掃描。

（10）安全可靠，狀態(tài)檢修的好幫手。

三、技術(shù)指標(biāo)

（1） 內(nèi)置式超聲波傳感器。

（2） 顯示：dB值，放電原始波形，電池狀態(tài)。

（3） 喇叭型天線，主機(jī)內(nèi)配快速掃描測(cè)試軟件。

（4） 精確度：±1dB；

測(cè)量中心頻率：40kHz±1kHz。

（5） 測(cè)量范圍：-60～60dB，步長(zhǎng)1dB。

（6） 激光瞄準(zhǔn)器為綠色激光。

（7）豪華噪音衰減耳機(jī)，可配合使用安全帽。

（8）存儲(chǔ)：可覆蓋存儲(chǔ)255次顯示波形。

（9）電池：內(nèi)置式鋰電池，9V,500mA。

（10）環(huán)境溫度：-20℃～55℃。

（11）外形尺寸及重量：尺寸：49×38×18cm ，重量：主機(jī)：1Kg， 整套設(shè)備：4Kg。