測(cè)量高壓工業(yè)絕緣材料的介質(zhì)損耗角的正切值及電容量

QS37介電常數(shù)及介質(zhì)損耗測(cè)試儀GB/T1693-2007

1.概  述                                                            

     介電常數(shù)及介質(zhì)損耗測(cè)試儀GB/T1693-2007?主要用于測(cè)量高壓工業(yè)絕緣材料的介質(zhì)損耗角的正切值及電容量。其采用了西林電橋的經(jīng)典線路。主要可以測(cè)量電容器，互感器，變壓器，各種電工油及各種固體絕緣材料在工頻高壓下的介質(zhì)損耗( tgd)和電容量( Cx)以，其測(cè)量線路采用“正接法"即測(cè)量對(duì)地絕緣的試品。電橋由橋體、指另儀、跟蹤器組成，本電橋特別適應(yīng)測(cè)量各類絕緣油和絕緣材料的介損（tgd）及介電常數(shù)（ε）。

2.技術(shù)指標(biāo)

2.1  測(cè)量范圍及誤差

    本電橋的環(huán)境溫度為20±5℃，相對(duì)濕度為30％－80％條件下，應(yīng)滿足下列表中的技術(shù)指示要求。    

2.2  電橋測(cè)量靈敏度

    電橋在使用過程中，靈敏度直接影響電橋平衡的分辨程度，為保證測(cè)量準(zhǔn)確度，希望電橋靈敏度達(dá)到一定的水平。通常情況下電橋靈敏度與測(cè)量電壓，標(biāo)準(zhǔn)電容量成正比。

    在下面的計(jì)算公式中，用戶可根據(jù)實(shí)際使用情況估算出電橋靈敏度水平，在這個(gè)水平上的電容與介質(zhì)損耗因數(shù)的微小變化都能夠反應(yīng)出來。

          DC/C或Dtgd=Ig/UwCn(1+Rg/R4+Cn/Cx)   式中：Ｕ為測(cè)量電壓    伏特（Ｖ）

ω為角頻率 2pf=314(50Hz)                                     

2.3 電容量及介損顯示精度：    

2.4 輔橋的技術(shù)特性：    

2.5 指另裝置的技術(shù)特性：

    工作電壓±12V

    在50Hz時(shí)電壓靈敏度不低于1X10-6V／格， 電流靈敏度不低于2X10-9A／格

    二次諧波  減不小于25db

    三次諧波  減不小于50db

相關(guān)產(chǎn)品：

ZJD-C絕緣材料介電常數(shù)介質(zhì)損耗角正切值測(cè)試儀GB1408

QS37塑料薄膜工頻介電常數(shù)介質(zhì)損耗測(cè)試儀GB/T1693-2007

QS37 dielectric constant and dielectric loss tester GB/T1693-2007

1.概 述

1 Overview

介電常數(shù)及介質(zhì)損耗測(cè)試儀GB/T1693-2007?主要用于測(cè)量高壓工業(yè)絕緣材料的介質(zhì)損耗角的正切值及電容量。其采用了西林電橋的經(jīng)典線路。主要可以測(cè)量電容器，互感器，變壓器，各種電工油及各種固體絕緣材料在工頻高壓下的介質(zhì)損耗( tgd)和電容量( Cx)以，其測(cè)量線路采用“正接法"即測(cè)量對(duì)地絕緣的試品。電橋由橋體、指另儀、跟蹤器組成，本電橋特別適應(yīng)測(cè)量各類絕緣油和絕緣材料的介損（tgd）及介電常數(shù)（ε）。

The dielectric constant and dielectric loss tester GB/T1693-2007? Is mainly used for the measurement of dielectric loss tangent pressure industrial insulation angle value and capacitance. The classic lines of Schering bridge. The main measure of capacitor, transformer, transformer, various electric oil and all kinds of solid insulation dielectric loss materials at power under high pressure (TGD) and capacitance (Cx) in the measurement circuit, the "positive connection method" is the measurement of insulation test. Bridge by bridge, formed another instrument, tracker, this bridge is especially suitable for the measurement of dielectric loss of insulating oil and insulation materials (TGD) and Permittivity (epsilon).

2.技術(shù)指標(biāo)

The 2 technical indicators

2.1 測(cè)量范圍及誤差

2.1 measuring range and error

本電橋的環(huán)境溫度為20±5℃，相對(duì)濕度為30％－80％條件下，應(yīng)滿足下列表中的技術(shù)指示要求。

This bridge is an ambient temperature of 20 ± 5 ℃, relative humidity of 30%－80% conditions, should meet the technical instructions in the following list.

在Cn＝100pF R4＝3183.2 即10K/π時(shí)

At Cn = 100pF R4 = 3183.2 10K/ π whe

測(cè)量項(xiàng)目 測(cè)量范圍 測(cè)量誤差

Measurement error measure range

電容量Cx 40pF--20000pF ±0.5% Cx±2pF

Capacitance Cx 40pF--20000pF ± 0.5% Cx ± 2pF

介質(zhì)損耗tg 0～1 ±1.5％tgx±0.0001

The dielectric loss of TG 0 ~ 1 ± 1.5%tgx ± 0.0001

在Cn＝100pF R4＝318.3 即1K/π時(shí)

At Cn = 100pF R4 = 318.3 1K/ π whe

測(cè)量項(xiàng)目 測(cè)量范圍 測(cè)量誤差

Measurement error measure range

電容量Cx 4pF--2000pF ±0.5% Cx±3pF

Capacitance Cx 4pF--2000pF ± 0.5% Cx ± 3pF

介質(zhì)損耗tg 0～0.1 ±1.5％tgx±0.0001

The dielectric loss of TG 0 ~ 0.1 ± 1.5%tgx ± 0.0001

2.2 電橋測(cè)量靈敏度

The measurement sensitivity of 2.2 Bridge

電橋在使用過程中，靈敏度直接影響電橋平衡的分辨程度，為保證測(cè)量準(zhǔn)確度，希望電橋靈敏度達(dá)到一定的水平。通常情況下電橋靈敏度與測(cè)量電壓，標(biāo)準(zhǔn)電容量成正比。

The bridge is in use process, sensitivity directly affect the bridge balance resolution level, to ensure the measurement accuracy, the sensitivity of bridge to reach a certain level of hope. Often bridge sensitivity and measuring voltage, capacitance is proportional to the standard.

在下面的計(jì)算公式中，用戶可根據(jù)實(shí)際使用情況估算出電橋靈敏度水平，在這個(gè)水平上的電容與介質(zhì)損耗因數(shù)的微小變化都能夠反應(yīng)出來。

The calculation formula in the following, the user can according to the actual use to estimate the sensitivity of the bridge level, small changes in capacitance and dielectric loss factor at this level are able to respond to the.

DC/C或Dtgd=Ig/UwCn(1+Rg/R4+Cn/Cx) 式中：Ｕ為測(cè)量電壓 伏特（Ｖ）

DC/C or Dtgd=Ig/UwCn (1+Rg/R4+Cn/Cx) type: U for measuring voltage volts (V)

ω為角頻率 2pf=314(50Hz)

Omega is the angular frequency of 2pf=314 (50Hz)

Ｃｎ標(biāo)準(zhǔn)電容器容量 皮法（pＦ）

Cn standard capacitor capacity skin method (pF)

Ｉｇ通用指另儀的電流5X10-10 安培（Ａ）

Ig general refer to another instrument current 5X10-10 ampere (A)

Ｒｇ平衡指另儀內(nèi)阻約1500 歐姆

Rg balance refers to the other instrument internal resistance of about 1500 ohms

Ｒ４橋臂R4電阻值3183 歐姆

R4 bridge arm R4 resistance of 3183 ohms

Ｃｘ被測(cè)試品電容值 皮法（ｐF）

Cx is the test capacitance skin method (pF)

2.3 電容量及介損顯示精度：

The 2.3 capacitance and dielectric loss of accuracy:

電容量 ±0.5%×tgδx±0.0001

Capacitance ± 0.5% × TG δ x ± 0.0001

介 損 ±0.5％tgx±1×10-4

Dielectric loss ± 0.5%tgx ± 1 × 10-4

2.4 輔橋的技術(shù)特性：

The 2.4 auxiliary technology characteristics of the bridge:

工作電壓 ±12V，50Hz

The working voltage of ± 12V, 50Hz

輸入阻抗 1012

Input impedance of 1012

輸出阻抗 0.6

The output impedance of 0.6

放大倍數(shù) 0.99

The magnification of 0.99

不失真跟蹤電壓 0～12V（有效值）

Without distortion, tracking 0 to 12V voltage (effective value)

2.5 指另裝置的技術(shù)特性：

2.5 refers to the technical characteristics of the other device:

工作電壓±12V

The working voltage of ± 12V

在50Hz時(shí)電壓靈敏度不低于1X10-6V／格， 電流靈敏度不低于2X10-9A／格

In the 50Hz voltage sensitivity is not lower than 1X10-6V / lattice, current sensitivity is not lower than 2X10-9A / lattice

二次諧波 減不小于25db

The two harmonic reduction is not less than 25dB

三次諧波 減不小于50db

The three harmonic reduction is not less than 50dB

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