1. Power and grounding problemsThe power supply is unstable or excessive: Relay protection tester requires a stable AC power supply. If the power supply is unstable or exceeds the voltage range specified by the instrument, it may cause damage to the instrument.Poor ground: The grounding terminal of

Definition of Fuse Resistance: Resistors and fuses are similar in material and structure, and fuse type resistors have both functions. They can be used as resistors in daily life, and once the current is abnormal, they play the role of fuses to protect machine equipment.Definition of Fuse Resistance

What are the causes of three -phase imbalances?There are many reasons that cause three -phase voltage imbalances, such as: single -phase ground ground, disconnected resonance, etc., can operate managers quickly deal with it can only be quickly distinguished.1. Dispel line failureIf a broken line but

High impedance transformers play an important role in limiting system short-circuit currents, and the issue of excitation inrush current has always been a major challenge in the application of high impedance transformers. Therefore, it is very important to effectively control the excitation inrush c