Probewell | XT Series | What is Admittance test?

What is Admittance test?





  Admittance test 

What is the Admittance test?
This test is conducted by injecting a small, 1,525 Hz audio frequency into the CT secondary, then measuring the audio frequency's induced current to determine the admittance value. 
Analog filtering and programmable gain are used to get the best dynamic range for the DSP to compute the admittance @ 60 Hz. While CT burden needs secondary current to achieve its purpose, the admittance needs small or no current (max. 0.5 A) on the secondary side. If the current is higher than 0.5 A, the test will not be conducted. All the phases are run sequentially.

How does it work?

This test can be conducted with or without an accessory.

The admittance test is used to characterize the ability of the CT (and attached conductors) to allow a current flow.
  1. This measurement is called the admittance of the system and it is measured in siemens units (S).
  2. The test is done sequentially for each phase.

For all details see PW-Connect XTeries user guide.


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