ABB ACS880-207, Hardware Manual

Page: 55 / 148

Checking the settings of transformers T21, T101 and T111
Auxiliary voltage transformer [T21, T101, T111] connections are made at the factory according
to the supply voltage and desired output voltage and you do not need to change the settings
during the installation. If needed (for example, due to a later part replacement), check the
connections using the diagrams below.
Transformer [T21] is a standard equipment. Transformers [T101] and [T111] are present if
required by the options specified by the customer.
The voltage settings of transformers [T21] and [T101] are made at terminal blocks
[T21_X1/X2] and [T101_X1/X2] respectively. The settings of transformer [T111] are made
on the transformer itself. The locations of the transformers and the terminal blocks are shown
in the layout drawing of an auxiliary control cubicle and in the circuit diagrams delivered
with the drive.
￭
T21 and T101 tap settings (400…500 V units)
T21_X2 or T101_X2 T21_X1 or T101_X1
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with +G304 wG304
Electrical installation 55
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