Applied Precision WS 2120 User Manual page 47

Control keys:
F1, ESC ..... Exit (return to previous page / skipping to next page)
F3 .............. Burden test
F3 ............. Data readout
F3 .............. Switch primary/secondary selection
F4 ............. Save Load Point values (including harmonics and shapes) into results database
F5 .............. Menu
Burden Test / Measurement can be done on measuring voltage or current transformer in order to verify
their function and installation.
Measurement screen shows the actual load point values, nominal values from the meter label, as well
as measured impedance, admittance and further calculated values.
It is initiated by pressing the F3 key twice from the Load Values page or selecting it from the Tests
Menu.
Burden Measurement screen
(one voltage sensor and
one current sensor used)
www.appliedp.com
4.11 Burden Measurement
Content:
U, I, S ........... Load point values
Snom ........... Nominal burden from meter's label
Inom ............ Nominal current from meter's label
Unom ........... Nominal voltage from meter's label
Z ................... Burden (Load Impedance) = U / I
S` ................. Measured Current burden = Inom * Inom * Z
I
S` ............... Operating Current Burden ratio = Si * 100.0 /
bI
Y .................. Admittance = I / U
S` ................ Measured Voltage burden = Unom * Unom *
U
* P208
S` .............. Operating Voltage Burden ratio Su * 100.0 /
bU
WS-UGFW619-EN
Working Standard
CTSnom
Y
VTSnom
User's Guide
47