1.1 Main technical characteristics of transformer comprehensive tester

The frequency response method uses the sweep frequency method to measure the characteristics of transformer windings, without suspending or disassembling the transformer cover, by detecting the characteristics of each winding

Amplitude frequency response characteristics, accurately measure the deformation of windings such as twisting, bulging, or displacement for transformers of 6kV and above.

The frequency response method has a fast measurement speed and can measure a single winding within 1-3 minutes.

The frequency response method has very high frequency accuracy, with an accuracy of over one thousandth.

The frequency response method adopts digital frequency synthesis, which has higher frequency stability.

The frequency response method uses 5000V voltage isolation to fully protect the testing computer.

The frequency response method can simultaneously load 9 curves, and the relevant parameters of each curve are automatically calculated to diagnose the deformation of the winding and provide diagnostic parameters

Exam conclusion.

The frequency response method uses powerful analysis software, and the software and hardware indicators meet the power industry standard DL/T911-2004.

The short-circuit impedance method does not require an external power supply, but uses a mains AC220V low-voltage power supply to automatically connect the AB, BC, and CA high-voltage windings of the transformer

Applying voltage, synchronously collecting data, automatically calculating impedance error percentage, the test results are very intuitive.

The short-circuit impedance method is suitable for impedance testing of transformers of any size and capacity.

During the short-circuit impedance method testing process, the waveform diagrams of the test current and voltage are displayed, which facilitates real-time monitoring of the testing situation.

The instrument has the function of measuring inductance.

The instrument has the function of measuring the zero sequence impedance of transformers.

Using the Windows platform, compatible with Windows 2000/Windows XP/Windows 7/Windows 8.

Using a database to store test data, the management of test data is simple and convenient.

The software management function is powerful, fully considering the needs of on-site use. The measurement data is automatically saved and exported to generate a Word version test report

(Corresponding Office software needs to be installed) or JPG image report, making it convenient for users to generate test reports.

The software has a high degree of intelligence, and after the input and output signals are connected, all measurement work can be completed with just one key press.

The software interface is simple and intuitive, with menus for analysis, storage, report export, printing, etc. Only after completing the current step can the next step be automatically popped up

Menu, more convenient.

1.2 Main technical parameters of transformer winding deformation comprehensive tester

Measurement speed: 1-3 minutes for single-phase winding

Output voltage: Vpp-25V， Automatic adjustment during testing

Output impedance: 50 Ω

Input impedance: 1M Ω (with a built-in 50 Ω matching resistor in the response channel)

Sweep frequency range: 100Hz-2MHz

Frequency accuracy: one thousandth

Quantization accuracy of acquisition channel: 14 bits

Sweep frequency method: linear or logarithmic, sweep frequency interval and number of points can be set arbitrarily

L curve display: amplitude frequency curve (phase frequency curve, optional)

Wide measurement dynamic range: - 120dB～20dB

Power supply voltage: AC220V

Impedance method test current: 10A

Impedance method frequency: 50Hz/60Hz

2-in-1 host weight: 7.5 kg