The Schaffner Best 96 all-in-one Test System can test for Immunity to Transient Burst, ESD, Surge, and mains power dips and interruptions.
The Fast Transient Burst test to EN61000-4-4 simulates a ‘showering arc’ caused for instance by AC mains switches and relays as they interrupt a circuit. The test is applied to mains cables by means of a coupling/decoupling network, and to signal and data cables by means of a capacitive clamp. Frequencies up to several hundred MHz are generated, with high voltages, so the test equipment is permanently installed in a screened chamber, monitored from a test PC outside.
The Surge test to EN61000-4-5 simulates the effects of lightning on the mains supply system, or the switching off of heavy loads. A high energy pulse (typically 20 joules at 2Kv) is applied to the mains lines of the EUT. If the Equipment Under Test breaks down, there is a risk of its components overheating or catching fire. For these reasons, this test is set up in a chamber with personnel outside, monitoring the results on a PC.
Mains interruptions and voltage dips to EN61000-4-11, (Power Quality Tests), are a means of testing for problems resulting from poor mains quality, which often occur in remote areas where failures are hardest to fix. The Best 96 box provides these tests. Slowly changing sags and swells can be simulated with a variable transformer.