Interruption and Voltage Dips Testing Labs in Argentina

Interruption and Voltage Dips Testing

Interruption and voltage dips testing is performed to evaluate the immunity of electronic equipment to temporary reductions or complete interruptions in the AC supply voltage. Such disturbances are common in real-world power systems and may occur due to grid faults, transformer switching, motor start-up currents, or sudden load variations. These events can disrupt electronic systems, cause resets, or lead to data loss if the equipment is not designed to tolerate them. 

During testing, the device under test (DUT) is subjected to controlled voltage reductions or supply interruptions using specialized programmable AC power sources or voltage dip simulators. The supply voltage is intentionally reduced to predefined levels—commonly 70%, 40%, or 0% of the nominal voltage—for specified durations ranging from a fraction of a cycle to several seconds while the DUT’s performance is monitored. 

Voltage dips and interruption immunity testing is most commonly conducted according to IEC 61000-4-11 for equipment with input currents up to 16 A per phase, and IEC 61000-4-34 for higher current equipment. These standards define the test setup, voltage reduction levels, and duration of disturbances used to simulate real power network conditions. 

This testing helps engineers verify that electronic systems can tolerate power disturbances without unacceptable performance degradation. It also enables manufacturers to evaluate the effectiveness of power supply design, energy storage components, hold-up circuits, and voltage regulation techniques, ensuring reliable operation of electronic products in unstable or industrial power environments. 

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