Tr Test - Voltech AT5600 User Manual

C H A P T E R 1 0 – S P E C I F I C A T I O N S
10.2.4.
The accuracy is based on the chosen test conditions, and is given by:
where:
where:
where:
AT5600 User Manual 98-119 issue 14

TR Test

�� = �� + �� + ��
�� �� �� ����
A is the total accuracy (%)
T
A is the basic relative accuracy (%)
R
A is the calibration accuracy (%)
C
A is the correction for primary voltage level (%)
PV
A is the correction for secondary voltage level (%)
SV
A is the correction for the turns ratio (%)
N
�� = 0.1 %
��
�� = 0.1 % + ( 0.00001 % ∗ ��
��
0.01 %
�� = 0.1 % + (
����
��
����
0.01 %
�� = 0.1 % + (
����
��
����
0.1 %
�� = 0.1 % + (
��
��
��
F is the test frequency (Hz)
M
V is the measured primary voltage (V)
PM
V is the measured secondary voltage (V)
SM
N is the measured turns ratio (Primary/Secondary)
M
+ �� + ��
���� ��
)
��
)
)
)
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