华测绝缘油介质损耗及电阻率测试仪HCJD-Ⅱ型
一、绝缘油介质损耗及电阻率HCJD-Ⅱ型产品介绍:
HCJD-Ⅱ型绝缘油介质损耗及电阻率测试仪 依据GB/T5654-2007《液体绝缘材料 相对电容率、介质损耗因数和直流电阻率的测量》设计制造。用于绝缘油等液体绝缘介质的介质损耗因数和直流电阻率的测量。一体化结构。内部集成了介损油杯、温控仪、温度传感器、介损测试电桥、交流试验电源、标准电容器、高阻计、直流高压源等主要部件。仪器内部采用全数字技术,全部智能自动化测量,配备了大屏幕(240×128)液晶显示器,全中文菜单,每一步骤都有中文提示,测试结果可以自动存储并打印输出,操作人员不需专业培训就能熟练使用。
二、绝缘油介质损耗及电阻率HCJD-Ⅱ型主要功能及特点
(1)油杯采用符合国标GB/T5654-2007的三电极式结构,极间间距2mm,可消除杂散电容及泻漏对介损测试结果的影响。具有排油电磁开关,可以在不拆卸油杯的情况下排空杯中试样油,并可用试样油冲洗油杯。
(2)仪器采用中频感应加热,PID控温算法。该加热方式具备油杯与加热体非接触、加热均匀、速度快、控制方便等优点,使温度严格控制在预设温度误差范围以内。
(3)内部标准电容器为SF6 充气三点极式电容,该电容的介损及电容量不受环境温度、湿度等影响,使仪器精度在长时间使用后仍然得到保证。
(4)交流试验电源采用AC-DC-AC 转换方式,有效避免市电电压及频率波动对介损测试准确性影响,即便是发电机发电,该仪器也能正确运行。
(5)完善的保护功能。当有过压、过流、高压短路时,仪器能迅速切断高压,并发出警告信息。当温度传感器失效或没有连接时,发出警告信息。
在中频感应加热炉内设有限温继电器,当温度超过120度时,继电器释放,加热停止。
(6)试验参数设置方便。温度设置范围0~125℃,交流电压设置范围
500~2200V,直流电压设置范围0~500V。
(7)采用大屏幕LCD显示器,具有背光、显示清晰。人机界面友好,只需按照汉字菜单提示、输入命令,仪器即可自动进行测试,并自动存储和打印测试结果。
(8)自带实时时钟,测试日期、时间可随测试结果保存、显示、打印。
(9)空电极杯校准功能。测量空电极杯的电容量和介质损耗因数,以判断空电极杯的清洗和装配状况。校准数据自动保存,以利于相对电容率和直流电阻率的精确计算。
三、绝缘油介质损耗及电阻率主要技术指标
1、电源电压: AC 220V±10%
2、电源频率: 50Hz/60Hz ±1%
3、测量范围: 电容量 5pF~200pF
相对电容率 1.000~30.000
介质损耗因数 0.00001~100
4、直流电阻率 2.5 MΩm~20 TΩm
5、测量精度: 电容量 ±(1%读数+0.5pF)
相对电容率 ±1%读数
介质损耗因数 ±(1%读数+0.0001)
直流电阻率 ±10%读数
6、分辨率: 电容量 0.01pF
相对电容率 0.001
介质损耗因数 0.00001
7、测温范围: 0~125℃
8、温度测量误差: ±0.5℃
9、交流实验电压: 500~2200V 连续可调,频率50Hz
10、直流试验电压: 0~500V 连续可调
11、功耗: 100W
12、外型尺寸: 500×360×420
13、总重量: 22Kg
四、绝缘油介质损耗及电阻率使用条件
环境温度: 0℃~40℃
相对湿度: <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, intelligent 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%