Abstract: An electrical energy consumption measuring system is disclosed which includes a watthour meter, a meter socket, a set of voltage transformers and two plugs. The meter is energized when it is received within the meter socket. Selected socket terminals of the meter socket are electrically connected to one of the two plugs. The set of voltage transformers is electrically connected to the other of the two plugs. The system is constructed and arranged so that, when the plugs are matingly engaged, the set of voltage transformers electrically isolates the windings internal to the watthour meter from the service voltage of the power system.

Abstract: A power sensor that enables determination of the frequency of a microwave signal comprises a signal input that receives the microwave signal at a particular frequency, at least one sensor that produces a first and second output corresponding to the power of the microwave signal, and a means for coupling the signal input to the sensor so that the coupling means distinguishes the first output from the second output in order that the ratio of these outputs produces a unique value at the particular frequency.

Abstract: A method and apparatus for adjustment of the assembly of an electric power meter which rotates in response to power consumption which enables successive test positions to temporarily support the assembly without marking the bearing, and provides only a single mark on the bearing at the final factory adjustment position with an indication on the bearing of any subsequent tampering with that position.