... human-computer interface 3.follows the Q/HZDLX001. CDMP300A Substation ProtectionGeneral CDMP300A(including CDMP301A, CDMP301B, CDMP301C and CDMP301D, hereafter ... most universal, widest used protection measuring & controlling device, CDMP300A is suitable for primary or standby protection to varied ... no higher than 100kv-grade. In general, besides CDMP300A series, there is no need to adopt other series ...