这些测试的一个程序来代表不同的配置，全系三相变压器的能力，和不平衡负载。-These test the capability of a program to represent transformers of various configurations, full three phase lines, and unbalanced loads.

IEEE 13 node test feeder data include: Capacitor Data configuration Distributed Load Data Line Data Regulator Data Spot Load Data Transformer data UG configuration