MR ETOS ED - Parallel operation (optional)

9 Visualization
Maschinenfabrik Reinhausen GmbH 2020216 6385142/08 ENETOS
®
ED
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:
ΔU =
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%
Settings
Parameters
Compensation
Name Value
Compensation method R&X compensation
Ohmic resistance load 0.0Ohm/m
Inductive resistance load 0.0Ohm/m
Length of line 0.00m
Voltage increase 0.0%
Voltage limit value 0.0%
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Information
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Settings
EN
CHANGE
REBOOT
admin 03.02.2020 08:09
Figure147: Compensation
1. Go to Settings > Parameters > Grid > Compensation.
2. Select the desired parameter.
3. Set the desired parameter.
4. Press the Accept button to save the modified parameter.
9.21 Parallel operation (optional)
Parallel transformer operation is used to increase the throughput capacity or
short-circuit capacity at one location. The device provides you with specific
functions for regulating transformers.
Conditions for parallel
operation
Compliance with the following general conditions is required for operating
transformers in parallel:
▪ Identical rated voltages
▪ Transformer power ratio (<3:1)