WBZ-833 series microcomputer programmable protection relay is suitable for10KV or 66KV high-voltage motor of undercurrent earthing system,The functions of WBZ-833:
1.Current fast break and negative sequence current fast break protection
2.Stall protection and main body protection
3.Current inverse time lag and negative sequence inverse time lag protection
4.Low voltage and voltage phase squence protection
5. Overload protection
6.Distributing low circumference decrease load
7.Undercurrent earthing options
8.Monitoring function
9.Recorder signal operation box PT disconnection detection