Dielectric loss (tan δ) tester | Test precautions?

Dielectric Loss (tan δ) Tester/Automatic Dielectric Loss Analyzer -- Test Precautions and Features? The test precautions and core features of the automatic dielectric loss analyzer are as follows:

I. Test Precautions

1. Safety Shielding and Grounding: Before operation, ensure the test sample is completely powered off and discharged. The instrument and test sample casings must be reliably grounded. Correctly connect the dedicated shielding cable/ring to the instrument's GUARD terminal to eliminate surface leakage and spatial electromagnetic interference; this is crucial for data accuracy.

2. Wiring Selection and Inspection: Strictly select the correct connection method (suitable for low-voltage grounding) or reverse connection method (suitable for high-voltage grounding) according to the test sample structure. After wiring, double-check to ensure the high-voltage line, measuring line, and shielding line are securely connected.

3. Parameter Presetting and Environmental Monitoring: Before automatic testing, correctly preset the test voltage, frequency range, and test sequence on the instrument interface. Simultaneously record the ambient temperature and humidity, as dielectric parameters are significantly affected by temperature, facilitating subsequent data comparison and analysis.

4. Process Monitoring and Interruption Conditions: After starting the automatic test program, the operator must still monitor the equipment status. If an abnormal increase in test current, unusual equipment noise, or overload alarm occurs, the test should be manually interrupted immediately to investigate the cause.

II. Core Features

1. Fully Automatic Wideband Testing: Its core advantage lies in its ability to automatically complete voltage boosting, multi-frequency scanning, data acquisition, and calculation according to a preset program, providing dielectric loss factor and capacitance spectra from power frequency to a wideband range (e.g., 10Hz-400Hz), revealing richer insulation condition information.

2. Intelligent Diagnosis and Data Analysis: Built-in advanced algorithms automatically separate resistive/capacitive currents and intelligently diagnose typical defects such as insulation aging and moisture absorption. It directly generates a comprehensive diagnostic report including polarization index and frequency characteristic curves.

3. Strong Anti-interference and Integrated Design: Employing digital filtering technology and vector operations, it boasts excellent anti-interference capabilities, ensuring measurement stability in complex field environments. The instrument is highly integrated, with touchscreen operation, combining high precision and portability.

Summary: This equipment represents the pinnacle of insulation diagnostic technology. Its value lies in its efficient and in-depth evaluation of the dielectric properties of insulating materials through automated testing and wideband scanning. The core of its operation lies in rigorous shielding and grounding, as well as correct parameter settings, to fully leverage its automatic, accurate, and intelligent diagnostic advantages. The MS-101G3 (CVT ratio + LCR + insulation resistance function) Automatic Dielectric Loss Analyzer features: 1. Self-excited CVT testing, requiring only one connection to simultaneously measure the capacitance and tgδ of C1 and C2.

2. Reverse-connection low-voltage shielding and high-voltage shielding functions, allowing for 10kV reverse-connection dielectric loss measurement of C11 without disconnection when the CVT bus is grounded.

3. Measurement functions for externally applied voltage and externally applied CN.

4. CVT ratio measurement function, meeting the requirements for CVT ratio measurement in 35–500kV ranges.

5. Multi-channel simultaneous measurement function, capable of simultaneously testing the dielectric loss values of four test samples.

6. Insulation resistance testing function, capable of testing polarization index, absorption ratio, and insulation resistance.

7. Features automatic LCR measurement function, capable of measuring inductance, capacitance, and resistance. (This is followed by a list of testing kits and related instruments: tanδ test kit, dielectric loss angle tester, dielectric loss tester, dielectric loss test kit, anti-interference dielectric loss tester, dielectric loss (tanδ) tester, automatic anti-interference dielectric loss tester.)