Dielectric loss (tan δ) tester | Test precautions?

Dielectric Loss (tanδ) Tester / Dielectric Loss Meter - Test Precautions and Features? The test precautions and core features of the dielectric loss tester are as follows:

I. Test Precautions

1. Safety Grounding and Electromagnetic Shielding: Before testing, ensure the instrument casing, the test sample grounding terminal, and the high-voltage source are reliably grounded. Correctly connecting the shielding terminal to the shielding ring of the test sample is a crucial prerequisite for eliminating surface leakage current and spatial electric field interference, ensuring measurement accuracy.

2. Scientific Selection of Wiring Method: Strictly select the correct wiring method (suitable for two-pole-to-ground insulation) or reverse wiring (suitable for end-screen grounding structures) according to the test sample structure. Incorrect wiring will directly lead to invalid data or even damage to the equipment.

3. On-site Anti-interference Measures: In complex electromagnetic environments, utilize the instrument's phase shifting and phase inversion anti-interference functions, or select a time period with less interference to conduct the test to obtain true and stable dielectric loss factor (tanδ) and capacitance (Cx) readings.

4. Environmental Recording and Comparison: Record the ambient temperature and humidity in detail, as the dielectric loss value is significantly affected by temperature. To facilitate effective historical data comparison, measurement results should be converted to standard temperature when necessary.

II. Core Features

1. High-Precision Diagnosis of Distributed Defects: The instrument can detect minute changes in tanδ and capacitance with extreme sensitivity, and its diagnostic capability for "distributed defects" such as overall insulation dampness, aging, and deterioration far surpasses that of ordinary insulation resistance testing.

2. Multi-Frequency Testing and In-Depth Analysis: In addition to power frequency (50Hz) testing, it supports multi-frequency measurements. By analyzing the dielectric loss spectrum, it can more deeply evaluate the polarization characteristics and aging state of the insulation material.

3. Fully Automatic and Highly Stable: Modern instruments possess automatic voltage boosting, measurement, calculation, and storage functions, and have built-in multiple anti-interference algorithms, enabling stable and reliable output of results in strong electromagnetic field environments such as substations.

Summary: The dielectric loss tester is a precision instrument for diagnosing the overall insulation condition of electrical equipment (especially early deterioration). Its core value lies in achieving sensitive monitoring of internal changes in insulation materials through high-precision measurement of tanδ and Cx. The essence of operation lies in rigorous shielding, correct wiring, and scientific anti-interference.

The MS-101G2 dielectric loss tester features: 1. Self-excited CVT testing, allowing simultaneous measurement of capacitance and tanδ of C1 and C2 with a single wiring connection.

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

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

4. CVT ratio measurement function, meeting the requirements for CVT devices ranging from 35 to 500kV.

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

6. Automatic LCR measurement function, capable of measuring inductance, capacitance, and resistance. (Note: The last line appears to be an unrelated product description: dielectric analyzer, tanδ test kit, dielectric loss tester, dielectric loss test kit, anti-interference dielectric loss tester, dielectric loss (tanδ) tester, automatic anti-interference dielectric loss tester.)