The SEL-4520 Arc-Flash Test Module provides a convenient way to test the operation of arc-flash detection relays installed in metal-clad and metal-enclosed switchgear. The SEL-4520 is used to test the SEL-751 and SEL-751A Feeder Protection Relays and other arc-flash detection relays that use light and overcurrent to sense an arc-flash event.
Test an arc-flash detection (AFD) system using the SEL-4520. The SEL-4520 is the ideal testing tool for the commission testing of optical arc-flash protection relays. Pressing the TST pushbutton provides a synchronized light flash and current source to the relay under test. In an appropriately configured relay, this test will result in an arc-flash trip. The relay's front-panel targets, SER data, and event reports can all be used to verify proper operation of the relay's arc-flash detection elements.
Features
Portable size is ideal for commissioning of optical arc-flash protection relays
Front-panel targets, SER data and event reports can be used to confirm arc-flash detection elements
