The basic configuration of GAL-211 line protection and monitoring device is integrated to provide comprehensive protection and control of 110kV and below grade line, branch line sets the integrated protection device. Protection: current protection (low voltage lockout overcurrent period) current limit quick break protection (low voltage lockout overcurrent Sec) overcurrent protection (overcurrent three sections) overcurrent protection residual overcurrent protection or to accelerate the zero-sequence voltage protection overload protection disconnection detection voltage protection CT PT disconnection detection control loop break detection 2 non-power protection and control function: 12 Lu Yao opened the letter into the collection device remote signaling modification, accident telesignalling telemetry: UA, UB, UC, IA, IB, IC, P, Q, COSΦ, F, 3U0,3I0, UAB, UBC, UCA 1.2 optional RS485 communication