How to accurately measure transient voltage disturbances?

The instantaneous voltage will bring great harm, which will not only affect the normal and safe power supply of the power supply system, but also damage the electronic equipment. What is the cause of the transient voltage and how to test it?

Transient voltage disturbances are classified into transient resonance, transient pulses, transient voltage rise or sag.

1. Transient resonance

l Cause: switching of lines, loads and capacitor banks;

l Consequences: damage the insulation of operating equipment, damage to electronic equipment, etc.

2, transient pulse

l Cause: The line is subjected to lightning strikes or inductive circuit separation;

l Consequence: Destroy the insulation of the running equipment.

3. Instantaneous voltage rise or sag

l Cause: The line is subjected to lightning strikes or inductive circuit separation;

l Consequences: The operation failure of the electrical equipment and the inability of the sensitive load to operate normally.

Instantaneous voltage will bring great harm, which will not only affect the normal and safe power supply of the power supply system, but also directly affect personal safety and economic efficiency. Therefore, it is necessary to pay attention to transient voltage.

So how do we pay attention to transient voltage?

ZLG Zhiyuan E6500 Power Quality Analyzer has introduced a transient detection function for this series of voltage phenomena, which is convenient for users to find such serious and difficult to monitor power quality problems. While monitoring transients, three types of transient events such as voltage swell, voltage sag, and voltage interruption are monitored.

E6500 power quality analyzer adopts professional sampling chip, 200kHz high-speed fixed-frequency sampling, can capture the shortest 5μs waveform transient pulse, and supports transient event non-destructive recording function. It also supports peak detection method, sliding window method, dv/dt method, etc. A variety of methods, and thresholds can be customized to allow users to find problems that are difficult to detect and intermittent.

E6500 power quality analyzer supports 50Hz/60Hz grid power frequency system measurement. It can record all power quality parameters such as harmonic, voltage, current, frequency, fluctuation, flicker, power and three-phase unbalance in the analysis field. Power quality measurement function, while providing professional PC analysis software for secondary analysis, providing users with the most accurate power fault diagnosis analysis.