Circutor AFQm-3WF-030M-480, Instruction Manual

Page: 73 / 116

73
Instruction Manual
AFQm
● Generator
The
IEEE519-2014
standard establishes more restrictive limits for a generating installation. In such a
case, i.e., where energy may be exported, the appropriate box must be ticked.
The first two parameters may be obtained from the rating plate on the network connection transformer.
If this function is enabled, the device will only correct the harmonics to meet the requirements of the
established limits, instead of trying to cancel the harmonics altogether.
●
I
L
(A), Line current
The standard requires maximum current demand for the previous 12 months. Such a value may be
difficult to obtain, so using the nominal line current as a value is an acceptable estimate.
Note: This parameter may be obtained from the rating plate on the network connection transformer.
● Z
SC
(%), Short-circuit impedance
The line’s short-circuit impedance depends on the design of the network coupling transformer and the
power line’s topology.
It is a value that is usually given in %, and indicates the ratio between the primary voltage to give the
nominal current in the short-circuited secondary, and the primary’s nominal voltage.
If this value is unavailable, but the short-circuit current at the connection point is known, it can be
calculated using this formula:
Z(%) = (Il/Isc) * 100
Note: This parameter may be obtained from the rating plate on the network connection transformer.
If this function is enabled, the device will only correct the harmonics to meet the requirements of the
established limits, instead of trying to cancel the harmonics altogether.
Press the key to access the next configuration step
Press the key to access the main screen of the device without saving the configuration values.