The KDRB-800A+ is a high-precision testing system developed in accordance with the national power industry standard DL/T911-2016 and the international standard IEC60076-18. It utilizes the Frequency Response Analysis (FRA) method to assess the mechanical integrity of transformer windings. The system consists of a measurement unit and analysis software that runs on a standard laptop, connected via a USB cable. By injecting a swept-frequency signal and analyzing the amplitude-frequency response characteristics of each winding, the instrument can accurately diagnose winding deformation through longitudinal or transverse comparison of the test results. Its advanced design ensures high accuracy and reliability without the need for transformer disassembly.

• Non-Destructive Testing: Accurately measures winding deformation (twisting, bulging, displacement) using the sweep frequency method without requiring the transformer to be disassembled or its cover removed.
• Rapid Measurement: High-speed testing capability, completing the measurement of a single-phase winding in just 1-2 minutes.
• High Frequency Precision: Features an extremely high frequency precision of 0.001% and utilizes digital frequency synthesis for superior stability.
• Enhanced Safety: Incorporates 5000V voltage isolation to fully protect the connected laptop computer from high-voltage transients.
• Built-in Oscilloscope Function: Includes an oscilloscope function for real-time monitoring of the test signal, ensuring test validity.
• Intelligent Diagnostic Software: The powerful analysis software can load up to 9 curves simultaneously, automatically calculate correlation parameters, diagnose winding deformation, and provide a reference conclusion.
• Automated Reporting: The software automatically saves measurement data and can export a complete Word or JPG test report, streamlining documentation.
• User-Friendly Operation: Features a simple, intuitive interface and a one-key measurement function that automates the entire testing process after connections are made.
• Wide Compatibility: The software is compatible with various Windows platforms, including Windows 2000, XP, 7, 8, 10, and 11.
• Efficient Data Management: Uses a database to store test data, making data management, retrieval, and comparison simple and convenient.

The technical specifications of the KDRB-800A+ are defined by its high-precision measurement capabilities and wide frequency range.

Parameter	Specification
Measurement Speed	1-2 minutes per single-phase winding
Output Voltage	Vpp-25V (automatically adjusted during testing)
Output Impedance	50Ω
Input Impedance	1MΩ (Response channel has a built-in 50Ω matching resistor)
Sweep Frequency Range	10Hz – 30MHz
Frequency Precision	0.001%
Sweep Mode	Linear or Logarithmic (sweep range and points are user-definable)
Curve Display	Amplitude-Frequency Curve (Standard), Phase-Frequency Curve (Optional)
Measurement Dynamic Range	-120dB – 20dB
Power Supply	AC 220V ±10% (External power adapter), Main Unit: DC 12V