ISA T 2000 - CT Tests: Winding or Burden Resistance

DOC. MIE11110 Rev. 5
Page
47
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110
In this instance, you have to start again the test, slowly reach
the same test value and slowly decrease to zero.
1 .1.6. CT tests : winding or burden resistance
When this test is selected, the following menu is displayed.
Purpose of the test is to measure the CT burden in terms of Ohm,
i.e. the active component of the VA burden measured in the
former paragraph.
This test is performed applying DC current to the CT secondary
connections, and measuring the corresponding DC voltage drop.
With this test, it is possible to apply the nominal current to the
burden, while in the previous test this current can be less or much
less, depending upon the CT nominal primary current.
The connection diagram is the following.