About Partial Discharge Test Equipment For Power Transformer Testing
Partial Discharge Testing System
Description : This system is used for measuring partial discharge of transformer, motor, instrument transformer, cable, GIS, switch and arrester, etc. The system has multi channel measuring function which allows measuring several test or several points. This method can be successfully used for big transformers and transformer substation.
Main components
- No partial discharge transformer
- Partial discharge measuring instrument
- Isolation low pass filter
- Coupling capacitor
- Current limiting resistance
- Control panel
- Frequency 50, 100, 150, 200, 400Hz
- 3dB fL 10x20x40KHZ optional
- 3dB fH 80x200x300KHZ optional
- Rough adjustment 6 range 20 1dB fine tuning range >20dB
Advanced Signal Processing for Accurate ResultsEquipped with state-of-the-art digital signal processing and advanced noise filtering, this test equipment ensures accurate readings even in environments with high electrical noise. This degree of sensitivity, detecting discharges as low as 2 pC, enables early identification of potential insulation faults, thereby minimizing transformer failure risk.
Designed for Operator Safety and ConvenienceUser safety is prioritized with features like emergency shutoff and overload protection. The units portability, thanks to its wheeled trolley design and robust metallic enclosure, facilitates on-site transportation and installation, while clear digital and analog outputs make data easy to interpret.
User-Friendly Operation and Comprehensive Data ManagementThe intuitive TFT touchscreen interface and LCD readout support straightforward operation. Internal memory, coupled with USB export, ensures that measurement data can be conveniently stored and analyzed, supporting both rapid on-site troubleshooting and detailed laboratory analysis.
FAQs of Partial Discharge Test Equipment For Power Transformer Testing:
Q: How is partial discharge detected using this equipment?
A: Partial discharge is detected by connecting the instrument to a power transformer via high-voltage (HV) coupling capacitors and BNC cables. The advanced digital signal processing algorithms filter out noise, allowing the device to accurately measure even very small discharges, down to less than 2 pC, as per IEC 60270 methodology.
Q: What are the main benefits of using this PD test equipment for transformer testing?
A: The equipment offers high sensitivity for early fault detection, comprehensive safety overlays (emergency shutoff, overload protection), reliable data integrity with internal memory and USB export, and portability through its wheeled trolley design. These features help reduce transformer failure risk, supporting cost-effective maintenance and greater operational assurance.
Q: When and where should partial discharge testing be performed?
A: Partial discharge testing should be conducted during routine maintenance, pre-commissioning, and whenever abnormal transformer behavior is observed. The portable nature of the equipment allows use both on-site at substations and in controlled laboratory environments, adapting to varying operational needs.
Q: What types of transformers can this equipment test, and what are its capacity limits?
A: This PD test equipment is suitable for layer or winded coil power transformers with three-phase configurations. It supports units up to 2500 kVA, rated voltages of up to 100 kV (primary side), and high voltages up to 150 kV. The frequency operating range is 0.1 MHz to 10 MHz.
Q: How do users manage and export test data from the equipment?
A: Measurement data is automatically saved in the devices internal memory. Users can easily export records via the integrated USB port, facilitating data review, sharing, or more detailed analysis on external computing platforms.
Q: What safety features are integrated into this equipment?
A: Safety features include an emergency shutoff function and automatic overload protection, minimizing risk to operators and connected equipment. The enclosure uses high-grade electrical insulation and metal to further ensure user and asset security during operation.
Q: What accessories come supplied with the PD test kit, and how do they enhance usability?
A: The kit includes BNC cables, high-voltage coupling capacitors, and test leads. These accessories enable flexible testing setups and ensure secure, reliable connections between the device and transformers, enhancing both safety and efficiency in operation.