MR TAPCON 230 AVT, Руководство по эксплуатации

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9 Operation
Maschinenfabrik Reinhausen GmbH 2021 120 7817454/02 EN TAPCON
®
230 Expert
Ohmic resistance load
You can use this parameter to set the ohmic resistance load.
Inductive resistance load
You can use this parameter to set the inductive resistance load.
Length of line
You can use this parameter to set the length of line.
9.3.2.2 Z compensation
To keep the voltage constant for the consumer, you can use Z compensation
to activate a current-dependent voltage increase. You can also define a limit
value to avoid excess voltage on the transformer.
ΔU% max
ΔU%
ΔU%
I
Figure 55: Z compensation
To use Z compensation, you need to calculate the voltage increase (ΔU) tak-
ing the current into account. Use the following formula for this purpose:
Δ U =
U
Tr
- U
Load
U
Load
×
I
N
× k
CT
I
× 100 %
∆U Voltage increase I Load current in A
U
Tr
Transformer voltage at current I I
N
Nominal current of current-trans-
former connection in A
U
Load
Voltage on line end at current I
and on-load tap-changer in
same operating position k
CT
Current transformer transmission
ratio
Sample calculation: U
Tr
= 100.1 V, U
Load
= 100.0 V, I
N
= 5 A k
CT
= 200 A/5 A,
I = 100 A
Produces a voltage increase ∆U of 0.2%