Huazheng HZJD-2Z Operating Instruction Download | Manualshive

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HZJD-2Z Insulating oil

Dielectric loss and Resistivity Tester

Operating instruction

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Summary of Contents for HZJD-2Z

Page 1: ...HZJD 2Z Insulating oil Dielectric loss and Resistivity Tester Operating instruction ...

Page 2: ...nts It is used for measuring dielectric dissipation factor and DC resistivity of insulating oil and other insulating liquids The instrument is characterized by integrated structure and integrates test cell temperature controller temperature sensor dielectric loss test bridge AC test power standard capacitor high resistance meter DC high voltage source and other major components The instrument adop...

Page 3: ...ickly cut off pressure and issues a warning message When the temperature of the sensor failure or not connected the instrument will also issue a warning message 6 There is a temperature limiting relay in the medium frequency induction heating furnace When temperature above 120 degrees the instrument frees the relay and stops heating 7 More convenient the experimental parameter is set Temperature s...

Page 4: ...1 of measured value 0 0001 DC Resistivity 10 of measured value Resolution Electric capacity 0 01pF Relative capacitivity 0 001 Dielectric dissipation factor 0 00001 Measured temperature range 0 125 Temperature measurement error 0 5 Test Voltage AC RMS 500 2200V Continuously adjustable frequency 50Hz Test Voltage DC 0 500V Continuously adjustable Power consumption 100W External dimensions 500 360 4...

Page 5: ...4 Fig 1 Operating Panel Fig 2 Top panel Printer Display Screen Keyboard Main Switch Temperature Probe Measuring Probe Drainage valve button Test cell ...

Page 6: ...5 Fig 3 Back panel Schematic diagram of test cell 1 Oil filler hole 2 Observation hole 3 Measured hole Mains Socket Communication Interface Ground Pole Oil exit pipe Fan ...

Page 7: ...er supply line in accordance with the product specification Be right to disconnect and connect The instrument must be adequately grounded In addition to the power line grounding conductor grounding product shell s grounding columns must be grounded In order to prevent electric shock the grounding conductor must be connected with the ground Before connecting with the input or output terminals of th...

Page 8: ...e 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 1 Place the cleaned test cell in the groove and connect the test cable as shown in Fig 2 2 Start the instrument Turn on the power switch and the LCD displays the main menu as shown in Fig 4 Fig 4 3 Test Conditions Enter Test Conditions param...

Page 9: ... or Back key the instrument save the setting parameter and return to the main menu 仪器校验当仪器校验设为是后可在不升温不盖箱盖的条件下测量介损和电阻率一般在校验仪器时使用详见七仪器校验 Instrument Verification The resistivity and dielectric loss can be measured in the absence of heat and with opening the lid of instrument when the Instrument Verification was set to Yes It was generally used in verifying the instrument See Ⅶ Instrument Ve...

Page 10: ...e process of warming and it will boost under the current temperature 图 6 2 是在升压的过程中按确定键即在当前电压下测试 In Fig 6 2 press Enter key during the process of boosting and it will do the test under the current voltage Fig 6 1 Fig 6 2 Heating up The test cell is heated up to the preset test temperature Because the temperature on the capacitance and dielectric dissipation factor of test cell full of air with ...

Page 11: ...tatus Calibration results After dry cell calibration is finished the apparatus automatically displays the calibration results as shown in Fig 7 Fig 7 5 Automatic measurement Remove the inner electrode from the outer electrode and then take measured oil samples 40ml and inject into the outer electrode of test cell before entering the automatic measurement Align the locating slot of inner electrode ...

Page 12: ...The test cell is heated up to the preset test temperature Because the temperature on quality properties of insulating oils have a very big impact we should test the oil under the preset temperature of course we can also press Enter key to do the test at room temperature Press the Back button and return to the main menu Boosting On reaching the required test temperature or after pressing Enter key ...

Page 13: ...t select automatic printing press the Print button the printer starts printing the test results displayed Press Back key and return to the main menu 图 10 Fig 10 6 Data query Press the Data query key and go to the data query screen in Fig 11 Fig 11 The instrument showed the total number of pages and the current number of pages save up to 99 pages Press the Page Up and Page Down button and you can m...

Page 14: ...the time setting screen shown in Fig 12 Fig 12 Press the select key to move the flashing cursor Click Increase or reduce key to adjust the data Press Done to finish modifying operations Press the Back button to return to the main menu Ⅶ INSTRUMENT CALIBRATION In the main menu interface as shown in Fig 13 click test conditions into the interface as shown in Fig 14 Fig 13 ...

Page 15: ... button If checking the resistance value please press the RES button Press Back button to return to the main menu In the calibration process the instrument can be operated with lid opening but we must be ware of electric shock The screen automatically displays the validation results as shown in Fig 16 17 Record the check results and convert the gear of the standard then press the dielectric loss k...

Page 16: ...15 Fig 16 Fig 17 Ⅷ INTRODUCTION OF TEST CELL 1 The test cell s structure ...

Page 17: ...e 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: ...ve the test cable and temperature sensor to take out the test cell directly Attention Be sure to drain the oil in the test cell clean and then remove it 4 Dismantling and assembling the test cell s electrode Loosen the fixed button and carefully withdraw the measuring electrode Similarly Place the measuring electrode and tighten the fixed button Attention Inner electrode is very precision componen...

Page 19: ...st directly without rinsing if you do the measurement on the same oil sample multiple times 2 Rinsing method of dismantling the test cell Because of insulating oil is extremely sensitive on very small pollution it is very important to clean the test cell before measuring the test medium Therefore it must be in accordance with the following methods in strict Method 1 Dismantle the electrode of test...

Page 20: ...ith soapy water Take out the parts clean them with tap water and distilled water and shake for 20 minutes in distilled water Method 4 Solvent cleaning method Dismantle the test cell Wash all parts with solvents and change the solvents Wash all parts with the acetone first and then tap water Then clean them with distilled water Dry the parts 60 90 minutes in the oven at temperature of 105 110 When ...

Page 21: ...zer beeps 5 times A Check if the capacitance value of dry cell is within the range of 60 5pF Check whether the test cell is in place and if it appears discharge phenomenon 3 When testing DC resistivity the time for 60 seconds of electrochemical process makes no changes A Check if the instrument s clock is in operation and adjust the clock 4 When the unit of the voltage parameter to be set displays...

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