High Voltage Dielectric Loss Tester
Darui Electric recommends
Main Features
1. Frequency conversion anti-interference
Using frequency conversion anti-interference technology, it can still measure accurately under 200% interference, with stable test data, suitable for on-site anti-interference dielectric loss tests.
2. High-precision measurement
Using frequency floating, digital waveform analysis, and bridge self-calibration technologies, combined with high-precision three-terminal standard capacitors, it achieves high-precision dielectric loss measurement, and the accuracy and stability of positive/reverse wiring measurements are excellent.
All range input resistances of the instrument are less than 2Ω, eliminating the influence of additional capacitance of test leads.
It can be externally connected to an oil cup for precision insulating oil dielectric loss tests, and can be externally connected to solid material measuring electrodes for precision insulating material dielectric loss tests.
3. Good compatibility
Automatically recognizes 50Hz / 60Hz system power supply, supports generator power supply, and can measure normally even with large frequency fluctuations.
Built-in series and parallel dielectric loss measurement models, fully compatible with calibration benches and dielectric loss standards, convenient for instrument calibration.
4. Multi-level safety protection to ensure personal and equipment safety
High voltage protection: In case of short circuit, breakdown, or high voltage current fluctuation of the test object, it can quickly cut off output in a short-circuit manner.
Low voltage protection: In case of misconnection to 380V, power fluctuation, or sudden power outage, protection is activated without causing overvoltage.
Ground protection: When poor grounding causes dangerous voltage on the shell, ground protection is activated.
C V T: Four protection limits for high voltage and current, low voltage and current, will not damage equipment; mis-selection of menu will not output excitation voltage. No 10kV high voltage output during CVT measurement.
Anti-misoperation: Two-level power switch; real-time monitoring of voltage and current; multiple key confirmations; clear distinction between high and low voltage terminals; slow voltage increase, rapid voltage decrease, audible and visual alarm.
Anti "capacitance rise": When measuring large-capacity test objects, the "capacitance rise" effect of voltage increase may occur. The instrument can automatically track the output voltage to maintain constant test voltage.
Shock resistance: The instrument adopts a unique shock-resistant design, which can withstand strong long-distance transportation vibration and bumps without damage.
High voltage cable: It is a high-voltage insulated wire that can be used on the ground.
5. Technical breakthroughs, powerful functions
(1) Has an external standard capacitor interface, automatically tracks the frequency of external test power supply from 40Hz to 70Hz, supports power frequency power supply and series resonant power supply for large-capacity high-voltage dielectric loss tests.
(2) Has a loop poor contact discharge indication function to facilitate judging whether the wiring is reliable.
(3) Has CVT self-excitation method measurement function, C1/C2 can be measured simultaneously with one wiring, automatically compensates for the influence of bus grounding and standard capacitor voltage division, no need to change wires or connect any external accessories, and the high voltage connecting wire can be dragged on the ground.
(4) Chinese graphic menu, large screen backlit LCD display.
(5) Equipped with thermal printer, printing data is clear, fast, and noiseless.
(6) With calendar clock, can store 100 sets of measurement data.
Jiangsu High Voltage Dielectric Loss Tester adopts frequency conversion power supply technology, using microcontroller and electronic technology for automatic frequency conversion, analog/digital conversion, and data calculation, achieving strong anti-interference ability, fast test speed, high accuracy, and simple operation.
The frequency conversion power supply uses a high-power switching power supply, outputs 45Hz and 55Hz pure sine waves, automatically boosts voltage, and can provide up to 10kV voltage; automatically filters out 50Hz interference, suitable for on-site testing in substations and other places with large electromagnetic interference.
Dielectric loss insulation testing can effectively detect overall moisture deterioration and local defects in electrical equipment insulation, and is widely used in electrical manufacturing, electrical equipment installation, handover, and preventive tests.
Note: The above information and technical parameters are compiled and released by Yangzhou Darui Electric Co., Ltd.
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