Oil Dielectric Loss Tester

Product description Oil dielectric loss tester is a high-precision instrument, which can be applied to measure dielectric loss angle and Volume Resistivity of insulating oil etc. It is integrated by oil cup for dielectric loss, temperature-control equipment, temperature sensor, test-bridge for dielectric loss, AC trial electrical source, standard capacitor, high resistance meter and DC high-voltage power etc. The most advanced heating mode of high frequency induction is applied to the heating part of this instrument, which has the advantage of non-contact of oil cup and heating unit, homogeneous heating, quick velocity and convenient control etc. Technical index Oil cup technical specifciations: Distance between High Voltage terminal and Low Voltage terminal 2mm Capacitance of Empty Cup 602PF The Highest testing voltage Industrial Frequency 2000V Dielectric Loss of Empty Cup tg1 10-4 Liquid capacity About 40ml Electrode Material Stainless Steel Volume 70mm(D) 120mm 1 Condition of Uss 2 Power Source AC 110V10% Without Frequency Limit 3 AC High Voltage Output 4 DC High Voltage Output Temperature Control Induction Stove Maximal Power 500W 6 Temperature Control Range

Product description Oil dielectric loss tester is a high-precision instrument, which can be applied to measure dielectric loss angle and Volume Resistivity of insulating oil etc. It is integrated by oil cup for dielectric loss, temperature-control equipment, temperature sensor, test-bridge for dielectric loss, AC trial electrical source, standard capacitor, high resistance meter and DC high-voltage power etc. The most advanced heating mode of high frequency induction is applied to the heating part of this instrument, which has the advantage of non-contact of oil cup and heating unit, homogeneous heating, quick velocity and convenient control etc. Technical index Oil cup technical specifciations: Distance between High Voltage terminal and Low Voltage terminal 2mm Capacitance of Empty Cup 60±2PF The Highest testing voltage Industrial Frequency 2000V Dielectric Loss of Empty Cup tg 10-4 Liquid capacity About 40ml Electrode Material Stainless Steel Volume 70mm(D) 120mm H 1 Condition of Use -5-40 RH 80% 2 Power Source AC 110V±10% Without Frequency Limit 3 AC High Voltage Output 400V 2200V ±2% Every 100V 50VA 4 DC High Voltage Output 200V 600V ±2% 5 Temperature Control Induction Stove Maximal Power 500W 6 Temperature Control Range

Product Introduction In the preventive insulation test of power equipment it is required to measure the insulation oil parameters of power equipment periodically. The measurement of dielectric loss and resistivity of insulating oil is one of the most important. For a long time most of them adopt the bridge method for measurement which is complicated in operation and the measurement accuracy is affected by many factors thus leading to a large measurement error. With the rapid development of electronic technology and the power industry for small volume light weight easy to operate rapid measurement high precision measurement instrument requirements I refer to domestic and foreign related instruments developed in the domestic leading insulation oil dielectric loss factor and dc resistivity tester. The instrument is designed and manufactured according to gb5654-2007 and related standards. It is controlled by microcomputer easy to use high measurement accuracy high test efficiency and greatly reduces labor intensity.

OVERVIEW Many power systems, railway systems, large-scale petrochemical plants and enterprises have a lot of electrical equipment whose internal insulation are mostly oil filled insulation type, and therefore, test on insulating oil dielectric strength is common and necessary. To meet the needs of the market, we have developed and produced a series of insulating oil dielectric strength testers according to national standard GB T507-2002, industry standard DL429.9 91 and the latest Electric Power Industry Standard DL T846.7-2004 by ourselves. This instrument, by using a single chip microcomputer as the core, can operate in full automation with high accuracy, greatly improving work efficiency and reducing the labor intensity of workers. Moreover, it is small in size and convenient to carry. MAJOR TECHNICAL INDICATORS Output voltage 0 100KV optional Voltage distortion rate 3 Voltage raising speed 0.5 5 KVS adjustable Standing time 15min adjustable Boosting interval 5 min adjustable Boosting frequency 1 9 time s optional Booster capacity 1.5KVA Measuring accuracy 3 Supply voltage AC220V 10 50Hz1 Hz Power 200W Applicable temperature 0 45 Applicable humidity 75 RH Overall dimension 465 385 425 Transformer Oil Dielectric Strength Tester 2

Features 1, the oil cup conforms to the standard GB/T5654-2007 three electrode structure, the inter electrode spacing is 2mm, it can eliminate stray capacitance and the effect of leakage on the dielectric dissipation test results. It has oil discharge electromagnetic switch, the operator can remove the sample oil from oil cup under the condition of don’t remove the oil cup, and can clean the oil cup with sample oil. 2, the instrument uses induction heating, PID temperature control algorithm. The heating mode has the advantages of oil cup and heating body non-contact, heat evenly, fast, and easy to control the temperature strictly controlled within the preset temperature error range. 3, the internal standard capacitor is the SF6 inflatable three electrode type capacitor. The dielectric dissipation and capacitance of the capacitor are not affected by the ambient temperature and humidity. The precision of the instrument is guaranteed after long time use. 4, AC test power supply using AC-DC-AC conversion, which can effectively avoid the influence of mains voltage and frequency fluctuation on the accuracy of dielectric dissipation test. Even if the generator is generating electricity, the instrument can run correctly. 5, this instrument has a perfect protection function. When there is over-voltage, over-current, high voltage short circuit, the instrument can quickly cut off the high pressure, and issue a warning message. When the temperature sensor fails or is not connected, a warning message is issued. In the medium frequency induction heating furnace with limit temperature relay, when the temperature exceeds 120 degrees, the relay release, heating stop. 6, test parameter setting is convenient. The temperature setting range is 0 ~ 125 ?, the AC voltage setting range is 500 ~ 2200V, and the DC voltage setting range is 0 ~ 500V. 7, the instrument uses a large-screen LCD display, with backlight, clear display and so on. Friendly man-machine interface, just follow the English menu prompts, enter the command, the instrument can be automatically tested. And automatically store and print test results. 8, this instrument has a real-time clock, test date and time can be saved with the test results, display and print. 9, this instrument has an empty electrode cup calibration function. It can measure the capacitance of the empty electrode cup and dielectric dissipation factor to determine the cleaning and assembly of empty electrode cups. Calibration data is automatically saved for accurate calculation of relative permittivity and DC resistivity.

Overview The Intelligent dielectric loss tester also applies to the measurement of tg and electrical capacity of high voltage electrical equipments in the workshops, laboratories and research institutes. It could measure non-grounded or grounded high voltage equipments adopting positive and negative connection method. Besides, it could measure the tg´ of capacitor voltage transformer and capacitance of main capacitor C1and C2. Main Specifications Control panel printer, keyboard, indicator and communication transferring. Variable frequency power supply SPWM switching circuit is adopted to generate and output high-power sine wave stable voltage. Step-up transformer the output of variable frequency power supply is stepped up to the measuring voltage. The maximum reactive power output is 2KVA one minute. Standard capacitor internal Cn. It is the measuring basis. Cn current detection it is used to detect the internal standard capacitor current, 10A 1A. The input resistance is

Overview: The Intelligent dielectric loss tester also applies to the measurement of tg�´ and electrical capacity of high voltage electrical equipments in the workshops, laboratories and research institutes. It could measure non-grounded or grounded high voltage equipments adopting positive and negative connection method. Besides, it could measure the tg of capacitor voltage transformer and capacitance of main capacitor C1and C2. Main Specifications Control panel: printer, keyboard, indicator and communication transferring. Variable frequency power supply: SPWM switching circuit is adopted to generate and output high-power sine wave stable voltage. Step-up transformer: the output of variable frequency power supply is stepped up to the measuring voltage. The maximum reactive power output is 2KVA/one minute. Standard capacitor: internal Cn. It is the measuring basis. Cn current detection: it is used to detect the internal standard capacitor current, 10A ~ 1A. The input resistance is

Overview: The Intelligent Tg dielectric loss tester is equipped with high voltage step-up transformer. Besides, it takes security measures like zero-cross closing, lightning protection, etc. During the experiment, different levels of high voltage ranging from 0.5KV to 10kV are outputted. The instrument has the advantages of convenient and safe operation. Technical index The Intelligent Tg dielectric loss tester has: printer, keyboard, indicator and communication transmission. Detect internal standard capacitor current: 10�¼A~1A Positive connection measurement: 10�¼A~1A Amount of negative connection side: 1A~1A Side volume range: 0.001%

ZJY automatic dielectric oil breakdown voltage tester is highly precise laboratory testing instrument, it is used to determine the withstanding capacity of any insulating oil. BDV test is a test of choice because it takes very less time to conduct and is a precursor to the condition of the insulating liquid, before carrying out extensive series of tests. ZJY dielectric oil breakdown voltage tester is accurate automatic oil BDV test set and testing standard can be IEC156 and ASTM according user’s requirement. Features: 1.ZJY Oil Breakdown Tester are available in a variety of maximum test voltages (60KV,80KV and 100KV) 2. Repetitive test sequence (up to 99 iterations)and average readings (from first to last) 3. Digital display output With LCD screen. 4.ZJY oil breakdown voltage tester can be used to test specimen as per standard IEC 156 and ASTM 5.ZJY oil breakdown voltage tester is wildly applied to accurately measure the dielectric oil breakdown voltage