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Dielectric dissipation factor (tanδ) measuring modes

 

Dielectric dissipation factor (tanδ) measuring modes

There are four measuring modes (connection modes): UST mode, GST mode, GSTg mode and completely sealed CVT mode.

UST mode is used to test ungrounded object. HV port is connected to high-voltage terminal of test object, and Cx to low-voltage terminal.

 

GST mode is used to test grounded object. HV port is connected to high-voltage terminal of test object, and Cx not to be connected because the low-voltage terminal of test object is connected to Earth.

 

GSTg mode is used to test two capacitances of object. HV port is connected to high-voltage terminal of test object, Cx to one low-voltage terminal. The other low-voltage terminal is connected to Earth.

 

CVT connection mode is used to test CVT. da, dn should be connected to the two terminals of 100V output of CVT, and one of da and dn terminals can be connected to Earth. Cx port is connected to test capacitor (C1 or C2), and HV port to another capacitor. You can exchange C1 and C2 to test another capacitor.

 

1. UST Mode

HV: Internal; Cn: Internal; Mode: UST   

 

 

HV: Internal; Cn: External; Mode: UST 

( External standard capacity should be set well first )

 

 

HV: External; Cn: Internal; Mode: UST

 

HV: External; Cn: External; Mode: UST     

( External standard capacity should be set well first )

 

 

 

2. GST Mode

HV: Internal; Cn: Internal; Mode: GST 

 

 HV: Internal; Cn: External; Mode: GST 

( External standard capacity should be set well first )

 

 HV: External; Cn: Internal; Mode: GST

 

 

HV: External; Cn: External; Mode: GST

(External standard capacity should be set well first )

 

3. GSTg mode

HV: Internal; Cn: Internal; Mode: GSTg

 

 

4. CVT mode

 

                       

 

 

 

Other Information of the Dielectric dissipation factor (tanδ) measuring modes

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