7 Operation
Maschinenfabrik Reinhausen GmbH 2021
71
8209941/00 EN
ECOTAP
®
VPD
®
III 30D-24 / MD&C
AVR AUTO auto mode
In auto mode, the device executes the tap-change operations automatically,
depending on the set control parameters. Observe section "Configuring the
control unit" [
Section 7.4, Page 75] for further information on the control
parameters. To activate auto mode, proceed as follows:
► Press
to activate auto mode.
Control via EXTERNAL CONTROL
In the EXTERNAL CONTROL operating mode, the device executes the con-
trol commands of an external control unit (e.g. ECOTAP® VPD® CONTROL
PRO). Refer to the operating instructions supplied with the control unit for
more information.
To activate control via EXTERNAL CONTROL, proceed as follows:
► Press
to activate control via EXTERNAL CONTROL.
ð
The device will perform the OLTC-PreCheck. In this mode, the OLTC-
PreCheck is automatically repeated every 24 hours.
7.3 Actuating on-load tap-changer using the emergency drive
shaft
WARNING
Danger of death or severe injury!
Improper actuation of the on-load tap-changer may result in death or seri-
ous injury!
► Fully de-energize the transformer and lock to prevent it from being
switched back on.
► Only actuate the on-load tap-changer using the emergency drive shaft to
set the adjustment position or for emergency operation. Emergency oper-
ation is to be understood as the failure of the motor-drive unit's voltage
supply when there is an urgent need to perform an on-load tap-change
operation.
► Only actuate the on-load tap-changer using the emergency drive shaft in-
stalled in the sealing module.
Summary of Contents for ECOTAP VPD 3 30D-24
Page 131: ......
