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2026
Measurement Principles of Short-Circuit Impedance Test: Low Voltage Short-Circuit Method and Wattmeter Method

Measurement Principles of Short-Circuit Impedance Test: Low Voltage Short-Circuit Method and Wattmeter Method

Understanding the measurement principle is essential to comprehend why HZ2611 supports both the two watt meter method and the three watt meter method, as well as why temperature calibration is necessary. By explaining the principles clearly, on-site operations are no longer mechanically following th

2026
How to Set the Discharge Parameters? The Selection Logic for Constant Current, Constant Power Mode, And Discharge Hour Rate

How to Set the Discharge Parameters? The Selection Logic for Constant Current, Constant Power Mode, And Discharge Hour Rate

The discharge parameter setup interface of HZFD-200 includes over a dozen parameter items. Only by understanding the meaning and setting logic of each parameter can the test be conducted according to the regulations and ensure valid data.Basic information parametersMachine Room Number (0001~9999):

2026
How Is the Freezing Point of Coolant Measured? The Physical Principles Behind the Temperature Recovery Inflection Point

How Is the Freezing Point of Coolant Measured? The Physical Principles Behind the Temperature Recovery Inflection Point

The determination of freezing point sounds simple—cool the liquid and observe when it begins to freeze. However, the SH/T 0090 method for measuring freezing point is far more complex. It does not measure the "temperature at which freezing begins," but rather a more physically meaningful p

2026
What Does the Standard Lightning Impulse Waveform 1.2/50µs Mean? How to Adjust the Waveform Parameters?

What Does the Standard Lightning Impulse Waveform 1.2/50µs Mean? How to Adjust the Waveform Parameters?

When conducting lightning impulse tests, each test report will state "1.2/50µs lightning impulse full wave." What do these two numbers signify, what is the allowable deviation, and how are the waveform parameters adjusted—only by understanding these can one truly interpret the test resul

2026
The Dehydration and Degassing Principle of the Two-Stage Vacuum Oil Purifier: Why Is High Vacuum the Core?

The Dehydration and Degassing Principle of the Two-Stage Vacuum Oil Purifier: Why Is High Vacuum the Core?

Many engineers know that oil purifiers can remove moisture and gas, but they are unclear why a two-stage system is more effective than a single-stage one and why temperature and vacuum levels need to be used in conjunction. By explaining this principle clearly, operators will understand which parame

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