620 series Type Test Certificate - Arc protection - Back-up protection - Bay control and measurement - Busbar differential protection (high impedance) - Busbar protection (voltage and frequency) - Capacitor bank protection - Feeder protection - Interconnection protection - Merging unit - Motor protection - Power management/Load shedding - Transformer protection - 2 winding - Voltage regulation - Type Test Certificate - 620 series Relion Protection and Control - 2.0 FP1 IEC