Single phase up to 16A 3 phase up to 32A
Single phase up to 16A 3 phase up to 32A
External EMI could come in any one of the following types – Conducted or radiated, Transient or continuous. Immunity tests are intended to qualify and quantify how immune and resilient the device under test is to external EMI. Care has to be taken by the manufacturers that their equipment has built-in features to protect itself from external EMI.
Conducted immunity refers to the ability of electronic devices or systems to operate properly despite being subjected to electromagnetic disturbances or interference through conducted means, such as power supply lines, signal cables, or other conductive paths. Unlike conducted emissions, which involve the unintentional transmission of electromagnetic noise from a device, conducted immunity focuses on the device’s ability to withstand external interference without malfunctioning.
Common sources of conducted immunity disturbances include electrical transients, surges, bursts, and voltage fluctuations introduced through power lines or signal cables. These disturbances can originate from various sources such as nearby electrical equipment, lightning strikes, switching operations, or electromagnetic interference from other electronic devices.
Ensuring adequate conducted immunity is crucial for electronic devices and systems to maintain functionality and reliability in environments where electromagnetic disturbances are present. Compliance with conducted immunity standards and regulations, such as those outlined in various electromagnetic compatibility (EMC) standards (e.g., IEC 61000 series), is often necessary for market access and regulatory compliance.
Designers implement various techniques to enhance the conducted immunity of electronic devices, including the use of filters, surge protection devices, shielding, proper grounding and bonding, isolation techniques, and robust circuit design practices. Additionally, testing and validation procedures, including conducted immunity testing, are employed during product development to verify compliance with applicable standards and ensure reliable operation in real-world environments subjected to electromagnetic disturbances.
Research
Conducted immunity can be affected by various types of electromagnetic disturbances, including electrical transients, voltage fluctuations, surges, bursts, and electromagnetic interference (EMI) introduced through power supply lines, signal cables, or other conductive paths. These disturbances can originate from sources such as nearby electrical equipment, lightning strikes, switching operations, or electromagnetic interference from other electronic devices.
Manufacturers ensure that electronic devices have adequate conducted immunity through rigorous testing and validation procedures during the product development phase. This typically involves subjecting the device to controlled electromagnetic disturbances, as specified by relevant standards such as the IEC 61000 series. By conducting immunity testing, manufacturers can assess the device's resilience to various types of disturbances and make design modifications as needed to improve its immunity performance.
Conducted immunity is crucial for electronic devices to maintain functionality and reliability in environments where electromagnetic disturbances are present. Without adequate immunity, devices may experience malfunctions, data corruption, or even damage when subjected to external interference. Compliance with conducted immunity standards and regulations is often necessary for market access and regulatory approval, ensuring that devices can operate reliably in real-world conditions and coexist with other electronic equipment without causing or experiencing interference.
