Delta 4000 Manual de instrucciones descargar pdf (Pagina 37)

Delta Control User Interface

81331 Rev 01 Nov 2010

Frequency and Temperature

This is where you specify at which test frequency you want to perform the test.

This is in most cases the same as the network frequency (but if you would like to

test at e.g. 55 Hz you simply enter 55). Note that “Line Frequency” in the setting

tab must be set to actual line frequency, 50Hz or 60 Hz.

Insulation properties are temperature dependent and the test object temperature

is a very important parameter. The average temperature of the test object

insulation should be entered.

These two parameters need to be set in order to start a measurement.

Test Type

Select which Test you want to perform. In the setting tab you set your preference

for tan delta or power factor readings.

The available tests are:

Power Factor/Tan-

Delta

Power Factor or Tan-Delta test is a semi

automatic test sequence performed at a preset

oltage and line frequency. The system will

ramp up the voltage to the set voltage and

measure the Power Factor or Tan-Delta and

after the completed test, ramp voltage down

and stop the test and present the result.

Excitation Current

n excitation current is a standard test that is

helpful in determining winding or core

problems in transformers.

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Delta 4000 Manual de instrucciones Pagina 37