Related Manuals for Huazheng HZJD-2Z
Summary of Contents for Huazheng HZJD-2Z
- Page 1 HZJD-2Z Insulating oil Dielectric loss and Resistivity Tester Operating instruction...
- Page 2 86-0312-3372757 .We are always at your service , will make you satisfied! Ⅰ.OVERVIEW HZJD-2Z Insulating oil dielectric loss and resistivity tester, is designed and manufactured based on GB/T5654-2007 of 《 Liquid insulating material of relative permittivity, dielectric loss factor and DC resistivity measurements》 . It is used for measuring dielectric dissipation factor and DC resistivity of insulating oil and other insulating liquids.
- Page 3 2. The instrument adopts the medium frequency induction heating, PID temperature control algorithm. This heating method has the advantages of t non-contact between the test cell and the heating body, even heating, fast speed, convenient control, strict control of the temperature within error range of the preset temperature. 3.
- Page 4 III. MAJOR TECHNICAL INDICATORS Voltage supply: AC 220V±10% Power frequency： 50Hz/60Hz ±1% Measuring range： Electric capacity 5pF～200pF Relative Permittivity 1.000～30.000 Dielectric loss factor 0.00001～100 DC Resistivity 2.5MΩm～20TΩm Measuring accuracy： Electric capacity ± (1% of measured value+0.5pF) Relative Permittivity ±1% of measured value Dielectric dissipation factor ±...
- Page 5 Keyboard Main Switch Display Screen Printer Fig.1 Operating Panel Test cell Drainage Temperature Probe valve button Measuring Probe Fig.2 Top panel...
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Page 6: Mains Socket
Mains Socket Ground Pole Oil exit pipe Communication Interface Fig.3 Back panel Schematic diagram of test cell： 1—Oil filler hole 2—Observation hole 3—Measured hole... - Page 7 4—Thermometer hole 2. Instrument operating instructions and matters needing attention ⑴The instrument must be reliable grounding, power entrance lead into AC220V power. ⑵Open tank cover, and take out the test cell, we should shut the tank cover, when heating and testing the dielectric loss. ⑶The cover is protective and when you open it, will interrupt the heating and high pressure.
- Page 8 Align the locating slot when the internal electrode into the external electrode. Do not operate in humid environments. Do not operate in explosive environments. Keep the surface clean and dry. Special notice: This instrument has high voltage output, improper use can compromise personal safety, prior to the use of this instrument, be sure to read the instruction manual carefully! Ⅵ.OPERATION APPROACH...
- Page 9 Fig. 5 度： 0~125℃ ① 参数范围：温 交流电压： AC 500~2200V 直流电源： DC 0~500V 仪器校验： 是或否 ① Parameter range： Temperature：0~125℃ AC Voltage：500~2200V DC Voltage：0~500V Instrument Calibration：Yes or No ② 参数的设置方法 按【选择】键移动光标至预设置处，按【增加】或【减小】键进行循环设置。 按【确定】或【退出】键，仪器保存所设置的参数，回到主菜单。下次开机仪器 保留上次所设参数，不需重新设置。 ② Method for setting parameters Press “Select” key and position flashing cursor on the parameter to be set. Press “Increase”...
- Page 10 按【空杯校准】键，进入空杯校准画面如图 6。 Press “Dry cell calibration” key, and go to the screen for calibrating cleaned dry cell as shown in Figure 6. 图 6-1 是在升温的过程中按“确定”键，即在当前温度下升压。 In Fig.6-1, press “Enter” key during the process of warming, and it will boost under the current temperature.
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Page 11: Automatic Measurement
no apparent effect, so you can press “Enter” key in the current room temperature to test. ② Boosting----On reaching the required test temperature, or after pressing “Enter” key in the heating process, it is automatically transferred to boost state, with voltage value increasing and adjustment. - Page 12 Fig. 8 As shown in the figure above, there are three options. Press the “Select” button, the cursor cycles in beating three choices. Press the “Modify” button, to determine √ or × at the cursor. After you finish selecting items, please click “Enter” button, the instrument automatically enters the auto-measuring screen as shown in Fig.9.
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Page 13: Data Query
boosting press "Enter" key, the instrument will stop boosting, and enter the test status. ③Test results----After the test, the screen automatically displays the test results, as shown in Fig.10. If you previously selected the automatic printing, the printer automatically prints test results. -
Page 14: Time Settings
page. Press the “Print” key, and you can print the current page of data. Press “Back” key and return to the main menu. 7、Time settings Press “time setting” button, and then enter the time setting screen shown in Fig.12. Fig.12 Press the “select”... - Page 15 Fig.14 Press the "select" button, move the cursor to the instrument calibration, automatically select "Yes" and press "Enter" button, enter the interface shown in Fig.15. Fig.15 Correctly connect the standard. As shown in Fig.15, if you want to verify dielectric loss factor, please click the “LOSS”...
- Page 16 Fig.16 Fig.17 Ⅷ.INTRODUCTION OF TEST CELL 1、The test cell’s structure...
- Page 17 1—Filling glass tube 2—Deaeration glass tube 3—Thermometric element tube 4—Protective electrode 5—Hoop connecting ring 6—Measuring electrode 7—High voltage electrode Fig.18 2、Technical standards of test cell The test cell used of three-electrode structure in line with the national standard of GB/T5654-2007, with electrode gap spacing 2mm, can eliminate the effects of stray...
- Page 18 capacitance and reducing leakage on the dielectric loss test results. Distance between high voltage and low voltage 2mm ⑵ Dry cell capacitance 60±5PF ⑶ Maximum test voltage (power frequency) 2000V ⑷Dry cell dielectric loss tan δ＜1×10-4 ⑸ Liquid capacity about 40ml ⑹...
- Page 19 new oil sample. 7、Cleaning the test cell (1)Cleaning the test cell in use ① The test cell in use must be soaked in clean oil when not to be tested. ② If you test different kinds of oil, the oil samples to be measured should be injected into the test cell according to the test requirements and then drained out, repeated 2-3 times and then start to the test.
- Page 20 ① Dismantle the test cell (See sketch of test cell). ② Clean all parts with chemical pure oil petroleum ether and benzene thoroughly. ③ Clean the test cell again with acetone, and then rinse it clean with neutral detergent. ④ Boil 5 minutes with 5% sodium phosphate solution of distilled water, and then use distilled water to wash a few times.
- Page 21 ① The electric discharge phenomena will appear if the internal or external electrode of test cell is not in place or the internal electrode is not assembled well. ② The test cell is needed cleaning if it is not clean or there are impurities between the inner and outer electrodes.
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