Safety capacitor

what is safety capacitor

Safety Certified Capacitors are generally designed and used for AC line filtering in many electronic devices and appliances. These capacitors are also known as EMI/RFI suppression capacitors or AC Line filter safety capacitors. They prevent equipment and machinery from sending and receiving electromagnetic and radio frequency interference. Because of their direct connections to AC lines, capacitor failure can sometimes result from exposure to over-voltages and transients. Failure of an capacitor in an across-the-line connection would not cause electrical shock, but it could open safety fuses or circuit breakers and cause fire. In line-to-ground, a failure can lead to a potentially fatal electric shock because of the loss of the ground connection. Various safety agencies closely monitor the performance of safety capacitors by subjecting them to impulse voltage tests, endurance tests and active flammability tests in order to ensure the performance and reliability of these devices.

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