品牌 | 其他品牌 | 產地類別 | 國產 |
---|---|---|---|
應用領域 | 電氣 |
HN8061A兆歐表檢定裝置
耐電壓(ya)測試儀(yi)校驗(yan)儀(yi)生產廠家
依據(ju)JJG1005—2005《電子式(shi)絕緣電阻(zu)表檢定規程》、JJG622—1997《絕緣(yuan)電阻表(兆(zhao)歐表)檢定規程》,用于檢定電子式絕緣電阻表的示值誤差、跌落(luo)電壓、短路電流。
二、主要技術(shu)指標(biao)
絕(jue)緣電阻表檢(jian)定(ding)裝置(zhi)(兆歐表檢(jian)定裝置)主要(yao)用來檢定(ding)額定(ding)電壓≤10000V的絕緣電阻表,也(ye)可在絕(jue)緣電阻表生(sheng)產(chan)、修(xiu)理中作標(biao)準器具(ju)。其電阻(zu)器部分可單(dan)使用。數字表部分可測5000V的直流電壓(ya)和大20mA的直流(liu)(liu)電流(liu)(liu)。
本檢(jian)定裝(zhuang)置(zhi)的(de)主要技術性(xing)能(neng)如下:
㈠ 標(biao)準(zhun)數字(zi)表(biao)
1、測(ce)量范圍:
電壓分兩檔:0~5000V 0~10000V
短路電流(liu):0~2mA 0~20mA
電(dian)阻0-200G-1T-10T 為了讓電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)源(yuan)(yuan)(yuan)更好(hao)的(de)(de)(de)(de)工作,常(chang)需添加(jia)一些必要的(de)(de)(de)(de)外(wai)(wai)圍電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)路(lu)(lu)(lu),如實(shi)現額外(wai)(wai)的(de)(de)(de)(de)保護(hu)特性(xing),輸(shu)(shu)(shu)出(chu)(chu)(chu)(chu)的(de)(de)(de)(de)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)壓,獲(huo)得更大的(de)(de)(de)(de)輸(shu)(shu)(shu)出(chu)(chu)(chu)(chu)功率等(deng)。下文收集了一些常(chang)用的(de)(de)(de)(de)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)源(yuan)(yuan)(yuan)外(wai)(wai)圍電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)路(lu)(lu)(lu),供設(she)計時(shi)參考。正負輸(shu)(shu)(shu)出(chu)(chu)(chu)(chu)接成單(dan)路(lu)(lu)(lu)輸(shu)(shu)(shu)出(chu)(chu)(chu)(chu)如一個5V轉(zhuan)±12V的(de)(de)(de)(de)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)源(yuan)(yuan)(yuan),若(ruo)臨時(shi)需要5V轉(zhuan)24V,可把負端(duan)當地,正端(duan)當24V,輸(shu)(shu)(shu)出(chu)(chu)(chu)(chu)24VDC。應用時(shi),在每(mei)路(lu)(lu)(lu)輸(shu)(shu)(shu)出(chu)(chu)(chu)(chu)的(de)(de)(de)(de)反(fan)向并聯一個二極管(guan)(guan)續流,防止因兩路(lu)(lu)(lu)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)壓的(de)(de)(de)(de)建立(li)時(shi)間不(bu)同,由一路(lu)(lu)(lu)通(tong)(tong)過負載給另一路(lu)(lu)(lu)的(de)(de)(de)(de)內部電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)路(lu)(lu)(lu)充電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)。兩個電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)源(yuan)(yuan)(yuan)的(de)(de)(de)(de)輸(shu)(shu)(shu)出(chu)(chu)(chu)(chu)串(chuan)聯增大輸(shu)(shu)(shu)出(chu)(chu)(chu)(chu)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)壓如手(shou)上有(you)兩個5V轉(zhuan)24V的(de)(de)(de)(de)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)源(yuan)(yuan)(yuan),若(ruo)臨時(shi)需要48V輸(shu)(shu)(shu)出(chu)(chu)(chu)(chu),可輸(shu)(shu)(shu)入并聯,輸(shu)(shu)(shu)出(chu)(chu)(chu)(chu)串(chuan)聯,每(mei)個電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)源(yuan)(yuan)(yuan)的(de)(de)(de)(de)輸(shu)(shu)(shu)出(chu)(chu)(chu)(chu)端(duan),同樣并聯反(fan)向二極管(guan)(guan),以防啟(qi)動快的(de)(de)(de)(de)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)源(yuan)(yuan)(yuan)通(tong)(tong)過負載給另一個電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)源(yuan)(yuan)(yuan)輸(shu)(shu)(shu)出(chu)(chu)(chu)(chu)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)路(lu)(lu)(lu)充電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)。
HN8062A接(jie)地(di)電阻表校(xiao)驗(yan)裝置
用于(yu)檢定JJG336-2004《接地電(dian)阻表檢定規(gui)程》所(suo)適用的我目前生產(chan)的型號的模擬式、數字式接地電阻表以及進口的同類(lei)儀表,也可做普通電(dian)阻箱使用,具有(you)調節(jie)范圍寬,使用方(fang)便,造(zao)型美觀等(deng)優(you)點。 為了(le)更好的(de)接(jie)地(di),所以(yi)在儀器(qi)設(she)備(bei)的(de)制(zhi)造中(zhong)往(wang)往(wang)會(hui)(hui)(hui)預留專門的(de)接(jie)地(di)端子來(lai)接(jie)保(bao)護地(di)線。接(jie)地(di)不良(liang)(liang)會(hui)(hui)(hui)產生觸電(dian)(dian)(dian)危險(xian)。儀器(qi)類產品(pin)(pin)AC電(dian)(dian)(dian)源端口電(dian)(dian)(dian)路中(zhong)EARTH與產品(pin)(pin)金屬(shu)外(wai)殼(ke)相連(lian),一(yi)旦出現接(jie)地(di)不良(liang)(liang)時,產品(pin)(pin)金屬(shu)外(wai)殼(ke)上將存在110VAC高壓。C2和C3為安規電(dian)(dian)(dian)容,當失效后擊穿(chuan)不會(hui)(hui)(hui)短路,而是斷路,確保(bao)了(le)安全。以(yi)一(yi)個實際舉例來(lai)說(shuo)明下(xia)不接(jie)地(di)線危害:故意減掉PA2000mini功(gong)率分(fen)析儀的(de)地(di)線,這時候儀器(qi)處于接(jie)地(di)不良(liang)(liang)的(de)狀(zhuang)態,機殼(ke)會(hui)(hui)(hui)帶110V電(dian)(dian)(dian)壓,會(hui)(hui)(hui)發生觸電(dian)(dian)(dian)危險(xian)。
主要技術(shu)指標:
1、模擬(ni)接地電阻
步(bu)進阻值(zhi)(Ω) | *1000 | *100 | *10 | *1 | *0.1 | *0.01 | *0.001 |
功率(W) | 0.25 | 0.25 | 0.25 | 0.25 | 0.1 | 0.1 | 0.1 |
基本(ben)誤差(cha)極限(α%) | 0.1 | 0.1 | 0.1 | 0. 1 | 1 | 5 | 10 |
時間常數τ(S) | ≤5*10-6 | ||||||
阻值調節范(fan)圍(Ω) | 0.1--11111.210 小步(bu)進值(zhi)0.001Ω |
2、模(mo)擬輔助接地電阻
電阻值(Ω) | 0 | 500 | 1000 | 2000 | 5000 |
基(ji)本誤差極限(α%) | <0.05Ω | 1Ω | |||
功率(lv)(W) | 0--0.25W |
從全稱上(shang)看,很多人可能(neng)還不(bu)是很了解IEC61000-4-7和IEC61000-3-2的(de)區別,下面就(jiu)做個解析。簡單(dan)的(de)說,IEC61000-4-7是針對(dui)電(dian)源和連接電(dian)源的(de)設備,給出(chu)(chu)其諧(xie)波(bo)(bo)、間諧(xie)波(bo)(bo)的(de)測量方(fang)法,同時針對(dui)測量諧(xie)波(bo)(bo)、間諧(xie)波(bo)(bo)的(de)儀器設備給出(chu)(chu)技術標準。在測量方(fang)法方(fang)面,IEC61000-4-7給出(chu)(chu)了頻率、諧(xie)波(bo)(bo)、失真系(xi)數、間諧(xie)波(bo)(bo)的(de)具體測試方(fang)法,IEC61000-4-7還特意強調(diao),嚴格意義上(shang)講(jiang),被(bei)測信號需(xu)要處于(yu)穩定狀態(tai)。
HN8063A耐電壓測試儀校驗裝置
一(yi)、性(xing)能特點
1、測量準度:
交、直流(liu)電壓 | 測(ce)量范圍(分三(san)檔(dang)) | 1K、10KV、30KV |
準確度 | AC 0.2%×讀數+0.1%× | |
DC 0.2%×讀數(shu)+0.05%× | ||
輸入電壓 | 30kV | |
電壓分辨率 | 0.0001kV | |
交、直流電流 | 總(zong)測量范圍(wei) | 0.100~400.00(mA) |
準確度 | AC 0.2%×讀數+0.1%× | |
DC 0.2%×讀數+0.02%× | ||
電流測(ce)量(liang) | 0.01~400.00/(mA) | |
交流電壓失真度 | 電壓輸入(ru)范圍(wei) | 1.000kV ~ 30.00kV |
頻率(lv)測量范圍 | 30次諧波 | |
量(liang)程范(fan)圍(wei) | 0.50% ~ 10.00% | |
準確(que)度 | 優于1% | |
直流電(dian)壓紋波系數 | 電壓輸入范圍(wei) | 1.000 kV ~ 30.00kV |
測量范圍(wei) | 0.50% ~ 10.00% | |
準確度 | 優于1% | |
電壓保(bao)持時(shi)間 | 測量范圍(wei) | 1.00s ~ 999.99s |
準確度 | 0.5%±2個字(10s以上0.2%) | |
分辨(bian)率 | 0.01s |
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