華測絕緣油介質(zhì)損耗及電阻率測試儀HCJD-Ⅱ型
一、華測HCJD-Ⅱ型產(chǎn)品介紹：
HCJD-Ⅱ型絕緣油介質(zhì)損耗及電阻率測試儀 依據(jù)GB/T5654-2007《液體絕緣材料 相對(duì)電容率、介質(zhì)損耗因數(shù)和直流電阻率的測量》設(shè)計(jì)制造。用于絕緣油等液體絕緣介質(zhì)的介質(zhì)損耗因數(shù)和直流電阻率的測量。一體化結(jié)構(gòu)。內(nèi)部集成了介損油杯、溫控儀、溫度傳感器、介損測試電橋、交流試驗(yàn)電源、標(biāo)準(zhǔn)電容器、高阻計(jì)、直流高壓源等主要部件。儀器內(nèi)部采用全數(shù)字技術(shù)，全部智能自動(dòng)化測量，配備了大屏幕（240×128）液晶顯示器，全中文菜單，每一步驟都有中文提示，測試結(jié)果可以自動(dòng)存儲(chǔ)并打印輸出，操作人員不需專業(yè)培訓(xùn)就能熟練使用。
二、華測HCJD-Ⅱ型主要功能及特點(diǎn)
（1）油杯采用符合國標(biāo)GB/T5654-2007的三電極式結(jié)構(gòu)，極間間距2mm，可消除雜散電容及瀉漏對(duì)介損測試結(jié)果的影響。具有排油電磁開關(guān)，可以在不拆卸油杯的情況下排空杯中試樣油，并可用試樣油沖洗油杯。
（2）儀器采用中頻感應(yīng)加熱，PID控溫算法。該加熱方式具備油杯與加熱體非接觸、加熱均勻、速度快、控制方便等優(yōu)點(diǎn)，使溫度嚴(yán)格控制在預(yù)設(shè)溫度誤差范圍以內(nèi)。
（3）內(nèi)部標(biāo)準(zhǔn)電容器為SF6 充氣三點(diǎn)極式電容，該電容的介損及電容量不受環(huán)境溫度、濕度等影響，使儀器精度在長時(shí)間使用后仍然得到保證。
（4）交流試驗(yàn)電源采用AC-DC-AC 轉(zhuǎn)換方式，有效避免市電電壓及頻率波動(dòng)對(duì)介損測試準(zhǔn)確性影響，即便是發(fā)電機(jī)發(fā)電，該儀器也能正確運(yùn)行。
（5）完善的保護(hù)功能。當(dāng)有過壓、過流、高壓短路時(shí)，儀器能迅速切斷高壓，并發(fā)出警告信息。當(dāng)溫度傳感器失效或沒有連接時(shí)，發(fā)出警告信息。
在中頻感應(yīng)加熱爐內(nèi)設(shè)有限溫繼電器，當(dāng)溫度超過120度時(shí)，繼電器釋放，加熱停止。
（6）試驗(yàn)參數(shù)設(shè)置方便。溫度設(shè)置范圍0～125℃，交流電壓設(shè)置范圍
500～2200V，直流電壓設(shè)置范圍0～500V。
（7）采用大屏幕LCD顯示器，具有背光、顯示清晰。人機(jī)界面友好，只需按照漢字菜單提示、輸入命令，儀器即可自動(dòng)進(jìn)行測試，并自動(dòng)存儲(chǔ)和打印測試結(jié)果。
（8）自帶實(shí)時(shí)時(shí)鐘，測試日期、時(shí)間可隨測試結(jié)果保存、顯示、打印。
（9）空電極杯校準(zhǔn)功能。測量空電極杯的電容量和介質(zhì)損耗因數(shù)，以判斷空電極杯的清洗和裝配狀況。校準(zhǔn)數(shù)據(jù)自動(dòng)保存，以利于相對(duì)電容率和直流電阻率的精確計(jì)算。
三、華測主要技術(shù)指標(biāo)
1、電源電壓： AC 220V±10%
2、電源頻率： 50Hz/60Hz ±1%
3、測量范圍： 電容量 5pF～200pF
相對(duì)電容率 1.000～30.000
介質(zhì)損耗因數(shù) 0.00001～100
4、直流電阻率 2.5 MΩm～20 TΩm
5、測量精度： 電容量 ±(1%讀數(shù)+0.5pF)
相對(duì)電容率 ±1%讀數(shù)
介質(zhì)損耗因數(shù) ±(1%讀數(shù)+0.0001)
直流電阻率 ±10%讀數(shù)
6、分辨率： 電容量 0.01pF
相對(duì)電容率 0.001
介質(zhì)損耗因數(shù) 0.00001
7、測溫范圍： 0～125℃
8、溫度測量誤差： ±0.5℃
9、交流實(shí)驗(yàn)電壓： 500～2200V 連續(xù)可調(diào)，頻率50Hz
10、直流試驗(yàn)電壓： 0～500V 連續(xù)可調(diào)
11、功耗： 100W
12、外型尺寸： 500×360×420
13、總重量： 22Kg
四、使用條件
環(huán)境溫度： 0℃～40℃
相對(duì)濕度： <75%
HCJD- type insulation tester and resistivity oil dielectric loss
A, product introduction:
HCJD- type of insulating oil dielectric loss and electrical resistivity tester based GB/T5654-2007 "liquid insulating material relative permittivity, dielectric dissipation factor and DC resistivity measurements" design and manufacture. For the measurement of dielectric loss factor and the DC resistivity oil liquid and insulating medium. The integrated structure. The internal integration of the dielectric loss, the Wen Kongyi cup, temperature sensor, dielectric loss measuring bridge, AC test power supply, standard capacitor, high resistance meter, DC high voltage source etc.. The instrument adopts full digital technology, inligent automatic measurement, equipped with a large screen liquid crystal display (240 x 128), the Chinese menu, each step has Chinese tips, the test results can be stored automatically and print output, the operator does not need professional training, can skilled use.
Two, main functions and features
(1) the oil cup with three electrode structure of the national standard GB/T5654-2007, inter electrode distance of 2mm, which can eliminate the influence of stray capacitance and leakage of dielectric loss test results. With the oil discharge solenoid switch, can not remove the oil cup oil samples under the condition of emptying, and available sample oil flushing oil.
(2) the medium frequency induction heating equipment, PID control algorithm. This heating method has the advantages of non-contact, oil and heating speed, uniform heating, easy control, strict control of the temperature in a preset range of temperature error.
(3) the internal standard capacitors charging three point capacitance SF6, dielectric loss and capacitance of the capacitor is not affected by environmental temperature, humidity, make the instrument accuracy guaranteed still after use in a long time.
(4) AC test power supply using AC-DC-AC conversion mode, effectively avoid the influence of the voltage and frequency fluctuation on the accuracy of dielectric loss test, even if the generator, the instrument can also run properly.
(5) perfect protection function. When the over-voltage, over-current, high voltage short circuit, the instrument can quickly cut off the high voltage, and a warning message. When the temperature of sensor failure or not connected, a warning message.
The temperature limiting relay is arranged in the medium frequency induction heating furnace, when the temperature exceeds 120 degrees, the release of the relay, the heating is stopped.
(6) the test parameter setting is convenient. The set temperature range of 0 to 125 DEG C, AC voltage setting range
500 ~ 2200V, 0 ~ 500V DC voltage setting.
(7) the use of large screen LCD display with backlight, display, clear. Friendly interface, simply enter the command prompt, Chinese characters according to the menu, you can test the instrument automatically, and automatic storage and print the test results.
(8) comes with real-time clock, date, time tested with test results are saved, display, print.
(9) the empty cup electrode calibration function. Measurement of air electrode cup of capacitance and dielectric loss factor, in order to determine the air electrode cup cleaning and assembly conditions. The calibration data is automatically saved, in order to facilitate the calculation of relative permittivity and DC resistivity.
Three, the main technical indicators
1, the power supply voltage: AC 220V + 10%
2, the frequency of power supply: 50Hz/60Hz + 1%
3, the measurement range: 5pF ~ 200pF capacitance
The relative permittivity of 1 ~ 30
The dielectric loss factor of 0.00001 to 100
4, DC resistivity 2.5 M m ~ 20 T M
5, accuracy: capacitance (1% +0.5pF readings).
The relative permittivity of 1% readings.
The dielectric loss factor (+0.0001 1% readings).
DC resistivity + 10% readings
6, resolution: capacitance 0.01pF
The relative permittivity of 0.001
The dielectric loss factor of 0.00001
7, the measuring range: 0 to 125 DEG C
8, the temperature measurement error: + 0.5 C
9, AC test voltage: 500 ~ 2200V continuously adjustable, frequency 50Hz
10, DC test voltage: 0 ~ 500V continuously adjustable
11, power consumption: 100W
12, size: 500 x 360 x 420
13, the total weight: 22Kg
Four, the conditions of use
Ambient temperature: 0 to 40 DEG C
Relative humidity: <75%
