TWX1Testing traveling wave protection relays and fault locators Requires: CMC test set with NET 2 or NET 3 interface RelaySimTest Accessories: User Manual Power cord Connection cable to CMC Test leads with safety plugs Transport case Notes: CMC 500: It is recommended to use the USX or USH test set variant with a type S convertible output module for the current outputs. CMC 256plus or CMC 430: It is recommended to insert the TWL1 decoupling box. CMC