Partial Discharge Free Test System| Detailed introduction of technical principles

Partial discharge-free test transformers are key equipment providing clean test power for insulation testing of high-voltage equipment.

Test Principle: The core principle is the extremely low partial discharge (typically ≤5pC) generated by the transformer itself at rated voltage. Through the selection of high-quality insulating media (such as purified transformer oil or high-purity SF6 gas), precise design and manufacturing processes optimizing the electric field distribution, and the use of a robust shielding structure, internal discharge is suppressed to the maximum extent at its source, resulting in a high voltage output with minimal "background noise" for accurate detection and separation of the partial discharge signal from the test sample.

Application Features:
1. Extremely low background interference: It serves as a benchmark device for quantitative measurement of partial discharge, ensuring the accuracy of test results.

2. Extremely high design and manufacturing requirements: Extremely strict control over material purity, internal cleanliness, shielding, and manufacturing processes leads to high manufacturing costs.

3. Specific application scenarios: Primarily used in high-voltage electrical appliance manufacturers, quality inspection agencies for type testing, factory testing, and precision insulation diagnostics—occurring in situations requiring extremely high measurement sensitivity.

4. It is the core of the measurement system: As a high-voltage power supply, it needs to be paired with partial discharge-free coupling capacitors, impedance detection, and measuring instruments to form a complete testing system. The partial discharge-free testing system, partial discharge-free test transformer, and SF6 insulation high-voltage test transformer system (AC50-1200kV) are suitable for manufacturers of electrical appliances, cables, motors, transformers, instrument transformers, insulation materials, and related high-voltage components, enabling them to perform partial discharge and power frequency withstand voltage tests on their products.

Oil-immersed Partial Discharge-Free Test Transformer

① Epoxy cylinder structure

② Low impedance voltage, superior to national standards

③ High insulation class, partial discharge ≤5PC

④ Reliable overvoltage protection

Gas-filled Partial Discharge-Free Test Transformer

① Integrated structure, small footprint

② Clean and oil-free, maintenance-free

③ Good insulation and arc-extinguishing performance, integrated structure, small footprint

Technical Parameters

1. Rated Capacity 50-1200kVA (customizable)

2. Output Voltage AC50-1200kV including

50, 100, 150, 200, 250, 300, 500, 1000kV

3. Turns ratio accuracy <1.5%

4. Partial discharge <5PC

5. Protection Functions Overcurrent and voltage protection alarm with automatic zeroing

6. Transformer Losses No-load loss <4% Load loss Less than 9%

MS-YDQW Partial Discharge Test System, Partial Discharge Test Transformer, SF6 Insulation High Voltage Test Transformer System