Power Electronics VS65 Series User Manual

VS65
POWER ELECTRONICS
46
ANNEXE A. POWER CABINET OPERATION
Residual over voltage protection
The residual over voltage protection is also used to prevent the stator from the earth fault. If the
zero sequence voltage is larger than the setting value, then the timer is starting. The device can
select the action between the warn and trip.
Figure 8.9 Logic diagram of residual over voltage protection
Under voltage protection
If the line voltage is less than the setting value and the lasting time is longer than the setting time,
the under voltage protection will be operated. The device can automatically detect PT breaking.
Figure 8.10 Logic diagram of under voltage protection
Over voltage protection
If the line voltage is larger than the setting value and the lasting time is longer than the setting
time, the over voltage protection will be operated.
Figure 8.11 Logic diagram of over voltage protection

Power Electronics VS65 Series Specifications

General

Brand	Power Electronics
Model	VS65 Series
Category	Controller
Language	English