14
1ZSE 5492-115 en, Rev. 5
fm_00070
2. Receiving
2.1 Unpacking
Check that the package is free from transport damage. Open the cover of the transport box.
Remove the supporting blocks of wood. If the package is damaged a careful investigation
must be carried out.
Lift the on-load tap-changer, using the lifting eyes on the top.
2.2 Inspection upon receiving
1. Check that there is no visible damage.
2. Open the door of the cabinet of the motor-drive mechanism and check that the motor-
drive mechanism is free from damage.
3. If transport damage is found, and it is adjudged that correct operation of the on-load
tap-changer is not possible, a damage report should be sent to the insurance company.
It is also recommended that photographs be taken of the damaged details. Mark the
photos with the serial number of the on-load tap-changer and send them to ABB for
comments.
4. Check that the quantity delivered, the type designation and the serial number agree
with the delivery documents, e.g. the packing list or ABB’s ordering acknowledgement.
The serial number is stamped on the rating plate.
5. Remove the drying agent (placed according to Fig. 5), before the on-load tap-changer
is taken into service.
6. If the packing material seems to be wet (e.g the plastic is coated with moisture), the
on-load tap-changer must be dried at least 24 hours at a temperature of max. 70 °C
(158°F) before it is tted to the transformer. See chapter 3, Drying.
2 Receiving
Rating plate with
Serial No.
Fig. 5. Inspection on receipt
Drying agent
2.3 Temporary storage before assembly
If the on-load tap-changer is not to be installed on the transformer immediately, once the
delivery has been approved the on-load tap-changer must be kept warm and dry. Let the
unit be kept in its plastic enclosure and leave the drying agent until assembly.
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