Circutor AFQm IP54 Serie Manual De Instrucciones página 147

AFQm IP54
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 (A), Line current
L
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
(%), Short-circuit impedance
SC
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:
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 save the modified settings.
Instruction Manual
Z(%) = (Il/Isc) * 100
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