C H A P T E R 10 – S P E C I F I C A T I O N S
AT5600 User Manual 98-119 issue 14 Page 233
10.2.25. PHAS Test
The accuracy is based on the chosen test conditions, and is given by:
where:
A
T
is the total accuracy (°)
A
R
is the basic relative accuracy (°)
A
C
is the calibration accuracy (°)
A
V
is the correction for voltage level (°)
A
N
is the correction for turns ratio (°)
where:
where:
F
M
is the test frequency (Hz)
V
P
is the measured primary voltage (V)
TR
is the turns ratio between the primary and secondary
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