Phas 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
10.2.25.
The accuracy is based on the chosen test conditions, and is given by:
where:
where:
where:
AT5600 User Manual 98-119 issue 14

PHAS 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 voltage level (°)
V
A is the correction for turns ratio (°)
N
�� = 0.05 ������
��
= 0.3 ������ + ( 0.000005 ∗ ��
��
��
1 ����
�� = 0.05 ∗ ( +
��
�� ��
�� ��
��
�� = 0.05 ∗ (|�� −
�� ��
����
F is the test frequency (Hz)
M
V is the measured primary voltage (V)
P
TR is the turns ratio between the primary and secondary
��
) ������
��
) ������
��
|) ������
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