Accuracy Testing Methods – 8 minutes
Describes the time-watt method of testing a watthour meter’s accuracy. Explains how to use the time-load method to estimate a watthour meter’s accuracy. Describes the comparison method of testing a watthour meter’s accuracy.
Portable Watthour Standards – 12 minutes
Describes a rotating standard. Describes a solid-state standard. Explains the resistance-load method of supplying a load to a standard and a meter under test. Shows how a phantom load can be used to supply a load to a standard and a meter under test.
Meter Field Test Connections – 10 minutes
Describes test jacks and test leads used to field test a socket-type watthour meter. Explains how various types of test equipment can be connected to a socket-type watthour meter in the field.