LV generator protection - engineering site - Schneider Electric

ContentsThe Generator Set and Electrical Distribution 31.1. The 2 applications 41.1.1. Replacement energy 41.1.2. Energy production 61.2. Quality Energy 81.3. Services to be provided 10The Generator Set application in LV 122.1. Choice of HV or LV system 122.2. Transfer device 132.2.1. Layout of feeders 132.2.2. Sequence 14Protection and Monitoring of a LV Generator Set 163.1. Generator protection 153.1.1. Overload protection 163.1.2. Short-circuit current protection 163.2. Downstream LV network protection 183.2.1. Priority circuit protection 193.2.2. Safety of persons 193.3. The monitoring functions 193.3.1. Capacitor banks 203.3.2. Motor restart and re-acceleration 203.3.3. Non-linear loads - Example of a UPS 213.4. Generator Set parallel connection 253.4.1. Parallel operation 253.4.2. Grounding a parallel-connected Generator Set 263.5. The installation standards 273.5.1. Power definition 273.5.2. Safety standard requirements 27The Schneider protection solution 294 .1. Micrologic and generator protection 294.1.1. Long Time Delay protection of the “Inverse Definite MinimumTime Lag” type of phases (3) 294.1.2. Generator protection 304.2. Micrologic P & H for generator monitoring 314.2.1. Implementation 314.2.2. The monitoring functions 314.3. Micrologic for insulation fault protection 384.3.1. The ground protection 384.3.2. Residual current device (RCD) protection 39Summary 405.1. Diagram 405.2. Comments 415.3. Summary 42"Additional technical informations" chapter 431