Refine On (Hebei) Electric Power Technology Co., Ltd. is one of the leading manufacturers and suppliers of insulating oil dielectric loss and resistivity tester in China. If you're going to wholesale durable insulating oil dielectric loss and resistivity tester, welcome to get quotation from our factory. All customized products are with high quality and competitive price.
The NRYH600 insulating oil dielectric loss and resistivity tester is a high-precision integrated instrument manufactured according to the GB/T5654-2007 standard. It is primarily used for measuring the dielectric loss factor (Tan Delta), relative permittivity, and DC resistivity of insulating oils and liquid dielectric media. The unit integrates the oil cup, temperature controller, test bridge, AC/DC power supply, and standard capacitor into a single automated system.
Product Specifications
|
Parameter |
Specification |
|
Capacitance Measuring Range |
5pF ~ 200pF |
|
Relative Capacitance Range |
1.000 ~ 30.000 |
|
Dielectric Loss Factor Range |
0.00001 ~ 100 |
|
DC Resistivity Range |
2.5MΩm ~ 20TΩm |
|
Capacitance Accuracy |
±(1% reading + 0.5pF) |
|
Relative Capacitance Accuracy |
±1% |
|
Dielectric Loss Factor Accuracy |
±(1% reading + 0.0001) |
|
DC Resistivity Accuracy |
±10% reading |
|
Capacitance Resolution |
0.01pF |
|
Relative Capacitance Resolution |
0.001 |
|
Dielectric Loss Factor Resolution |
0.00001 |
|
Temperature Range |
0 ~ 125 °C |
|
Temperature Measurement Error |
±0.5 °C |
|
AC Test Voltage |
500 ~ 2200V (Continuously adjustable, 50Hz) |
|
DC Test Voltage |
0 ~ 500V (Continuously adjustable) |
|
Power Consumption |
100W |
|
Dimensions |
420mm * 380mm * 385mm |
|
Total Weight |
21kg |
|
Ambient Temperature |
0 ~ 40 °C |
|
Relative Humidity |
≤80% |
|
Power Supply |
AC 220V ±10%, 50Hz ±10% |
Product Advantages
- High Automation: Integrates heating, dielectric loss measurement, and resistivity measurement into one seamless automatic process.
- Standard Compliant Electrode Structure: Three-electrode design with 2mm spacing eliminates stray capacitance and leakage effects on test results.
- Advanced Heating and Control: Utilizes medium frequency induction heating with PID temperature control for non-contact, uniform, and precise temperature management.
- Stable and Reliable Data: Employs advanced DSP and FFT technology to ensure data stability and accuracy.
Main Application Scenarios
- Transformer Oil Testing: Routine testing and quality analysis of insulating oil used in power transformers to assess aging and contamination.
- Insulating Liquid Quality Control: Measurement of liquid insulating materials as specified by GB/T5654-2007 standards in manufacturing and maintenance facilities.
- Laboratory Analysis: High-precision research and diagnostic testing of dielectric properties of liquid insulators in electrical laboratories.
- Electrical Equipment Maintenance: Verification of insulating medium integrity in high-voltage equipment such as bushings and circuit breakers where oil is used.
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Frequently Asked Questions (FAQ)
Q1: Why is the "Empty Cup Test" necessary before filling the cup with oil?
A: The empty cup test is essential to verify the cleanliness and proper assembly of the electrode cup before oil injection. It measures the baseline capacitance and dielectric loss factor of the empty cup to ensure there is no contamination that could cause inaccurate oil test results.
Q2: How does the insulating oil dielectric loss and resistivity tester maintain measurement accuracy over a long period?
A: The instrument utilizes an internal standard capacitor that is SF6-charged and three-pole. This design ensures that the capacitor's own dielectric loss and capacitance are not affected by changes in ambient temperature or humidity, guaranteeing long-term accuracy stability.
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