Training Sessions
- Principles of Meter Operation – 6 minutes Briefly states why meters are tested. Briefly states what a meter test consists of. Lists the general types of information needed to test meters. Briefly describes how a typical watthour meter works.
- Meter In-Service Connections – 10 minutes Describes the source and load connections for a typical single-phase meter and a typical polyphase meter. Describes the flow of current through the current and potential coils of a typical single-phase meter and a typical polyphase meter.
- Test Equipment – 12 minutes Describes the overall purpose of test equipment. Identifies equipment typically used to test meter accuracy in the field and states the function of each piece of equipment.
- Test Connections and Comparisons – 8 minutes Describes the principles for connecting test equipment to a typical single-phase meter. Describes the principles for connecting test equipment to a typical polyphase meter using the separate stator test approach. Describes the principles for connecting test equipment to a typical polyphase meter using the series test approach. Defines a watthour constant, Kh. Describes how a typical single-phase meter is compared to a standard when the Kh of the meter is different from the Kh of the standard. Describes how a typical polyphase meter is compared to a standard when the Kh of the meter is different from the Kh of the standard.
- Test Connection Diagrams – 8 minutes Identifies the following items on a typical meter test connection diagram: meter, phantom load, standard, current circuit connections, potential circuit connections, meter current coil jumper connections. Identifies these items on a typical meter internal diagram: meter form number, current coils, potential coils. Identifies these items on a typical test jack diagram: jumper connections, phantom load potential connections, current connections.
Support Materials Available
Student workbook, instructor guide.
|
