1.Main points of power distribution system for air-conditioning system(ACS) 2.Electric power equipment & devices for ACS. 3.Voltages and Calculation of Voltage Drop Voltages and their relations, calculation of voltage drop and voltage flicker4.Calculation of Short Circuit Current Sources of short circuit current, asymmetrical factor K, calculation of short circuit current5.Protection & Coordination of Over-Current Power fuse, no fuse breaker, power circuit breaker, protection & coordination6.Protection of Over-Voltage and System Grounding Reasons and solutions to over-voltage, characteristics of lightning, insulatio |