Nexans
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Voltage
HV: 60 or 63KV
MV: From 5.5 up to 22KV on load
Frequency
50 Hz
Vector groups
YNynO-YNd11
Cooling
It can be by:
ONAN system: Natural circulation of oil in radiators cooled by the ambien air
ONAF system: Air circulation by motor driven fans
ODAF system: Forced oil circulation in an aero-refrigerant
Voltage regulation
It is done on the the high voltage winding and is available in two designs:
-Off-load regulation with manually controlled tap-chagerwith 3 or 5 positions
-On-load regulation on full scale of 17 or 21 steps.
Special design studies are required in order to answer to customer needs.