ECODRIVE DKC01.1/DKC11.1 Drive Controllers
DST / DLT transformers
9-1
DOK-ECODRV-DKC01/11.1*-PRJ3-EN-P
9
DST / DLT transformers
9.1 Selection
Transformers are only needed if the line voltage exceeds the permitted
rated voltage of the DKC.
For grounded power supply lines, the line voltage is matched to the rated
voltage of the unit using autotransformers:
•
for DKC**.*-040-7-FW/DKC11.1-040-7-FW with autotransformers suit-
able for a specific output voltage range.
•
for DKC**.*-030-3-F with autotransformers designed for a specific
output voltage.
To match the voltage for grounded power supply lines, always connect
isolating transformers to prevent excess voltages between the outer con-
ductor and ground.
•
for the DKC**.*-040-7-FW this documentation does not offer a range
of products for selecting suitable isolating transformers (Unterlage bei
Bedarf anfordern).
•
for the DKC**.*-030-3-FW the isolating transformer can be selected
according to Fig. 9-4.
9.2
Autotransformers for DKC**.*-040-7-FW
Select an autotransformer according to the line voltage and the power re-
quirements of the system.
Proceed with the selection as follows:
⇒
Determine the rating group and read the gearing ratio "i" using the re-
quired rated line voltage range from the diagram in Fig. 9-1.
⇒
Calculate the actual transformer output voltage using the rated line
voltage and the gearing ratio "i".
⇒
Check drive data. The output voltage of the transformer affects the
drive data. See documentation "ECODRIVE Servodrives DKC with
MKD"- Selection lists.
⇒
Select a three-phase autotransformer via the required connected load.
Grounded power supply lines
Ungrounded power supply lines
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