5 Mounting
Maschinenfabrik Reinhausen GmbH 2019
47
6107891/02 EN
ECOTAP
®
VPD
®
To prepare for drying, proceed as follows:
ü
Remove motor-drive unit and control unit as described in the section "Dis-
assembly before transformer drying" in the operating instructions for the
ECOTAP® VPD® MD&C motor-drive unit.
1. Clean sealing surfaces on sealing module and transport locking plate and
check that o-ring is in the correct position.
2. Attach and fasten transport locking plate before drying.
Figure 31: Fastening transport locking plate
Potential drying methods:
You can dry the on-load tap-changer using one of the following methods.
▪ Vacuum-drying in an autoclave
▪ Vacuum-drying in the transformer tank
▪ Vapor-phase drying in an autoclave
▪ Vapor-phase drying in the transformer tank
▪ Low-frequency drying in an autoclave
▪ Low-frequency drying in a transformer tank
The drying time depends on the transformer.
