IEC 61000 4 5 Surge Generator Working Principle #Business

Surge is a major problem in electronics as it is the main concern of every circuit designer. These overvoltages are usually referred to as pulses, which have distinct high-voltage properties, mostly in the kV range, lasting for a short time. Pulse voltage characteristics can be identified by a high or low drop time, followed by a very high time for the voltage to rise. An example of a natural cause pulse voltage could be lightning. Let's learn more about the principle of operation of the device. Read on to find out more.

Since these surge voltages can appear very dangerous to electrical equipment, it is important to test the equipment for resistance. Overvoltage generators that produce high voltages or electric shocks make sense here.

Basic principle of operation
Standard EC 61000-4-5 defines stability criteria, test methods, and standard range of test levels for devices against one-way overvoltages generated by overvoltages during lightning switching and transients. The level of testing for electrical and electronic equipment is determined depending on the environment and installation conditions. The main purpose of this standard is to provide a general reference for measuring the resistance of electrical and electronic equipment to overvoltages.

Surge protection IEC 61000-4-5 Immune exposure is intended to indicate pulses of voltage or current generated in the electrical network by events outside the test equipment. Overvoltages can be caused by transients when changing the power system, such as: B. changing capacitor banks or changing loads. Overvoltage in power lines can also be caused by lightning, either as a direct strike on the transmission line or as a result of lightning strikes in the area.

A surge generator is used to perform the capacitor discharge technique. This device converts the line power supply into direct high-voltage pulses which are then sent through the faulty power supply connection. The charge on the capacitor is proportional to the supply voltage. When the switch is closed, the capacitor discharges a high-voltage pulse into the test wire. After analyzing the results, the graph shows how time affects the stress at which the gap occurs.

The curve develops by applying increasing stress to the gap and following the time lag until it ends. The curve shows:

The smaller the delay before the change, the greater the applied voltage.
Often there is a small and minimal time lag where the void will never occur.
There is a minimum stress, which is indicated by the "Minimum Breakdown Voltage", below which the gap will not pass within the normal test time of a few minutes.

Ingestion
In short, surge generators, also known as tumors, are an important component in localizing cable damage. The voltage and energy capabilities of the gadget evaluate the efficiency at which faults can be reduced and identified. When selecting a device, consider the type of cable and the total length under test. I hope this helps.

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