10 TRIHAL TECHN MANUAL, Instrukcje, Schneider Electric, srednie napiecie
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GEa 215000 c/couv Page 1 Mercredi, 17. mars 1999 4:03 16
Trihal
cast resin transformer
instructions
for installation
and maintenance
contents
receipt and handling
1
installation
4
HV and LV connections
10
Z thermal protection
15
T-935 thermal protection
29
commissioning
41
maintenance and after sales services
46
check-list before commissioning
47
GEa 215000 c 1/48 Page 1 Mercredi, 17. mars 1999 4:02 16
Trihal
receipt and handling
preliminary checks
On receipt, ensure that the transformer has not been damaged during transport (LV
busbars or HV connection terminals bent, broken insulators, damaged windings, wet
transformer, damaged cover, contamination by foreign bodies, etc.), and check that
any ordered accessories have been included in the delivery (rollers, electronic con-
verter, etc.).
Should the device have been damaged:
warning
This instruction manual is designed
to apply to standard range Trihal
transformers, as defined in the
France Transfo catalogues. For
special Trihal transformers, i.e.
those produced in accordance
with a special requirement or a
customers specification, certain
statements and recommendations
may not be applicable (particular
the paragraphs dealing with the
IP31 enclosure, the HV and LV
connections, the thermal protec-
tion, etc.)
If you are in any doubt, please con-
n
take delivery subject to reservations which should be indicated to the transporter
and confirm this by registered letter within three days.
n
Write a report and send it without delay to your supplier (France Transfo or retailer
as appropriate).
GEa 215000 c 1/48 Page 2 Mercredi, 17. mars 1999 4:02 16
Trihal
receipt and handling
storage
The Trihal transformer must be protected in storage from water and protected from
dust generating work (masonry, sanding, etc.).
The Trihal transformer is delivered in a plastic cover, this cover must be kept over the
equipment whilst it is in storage.
The Trihal transformer can be stored at a temperature down to – 25°C.
handling
1
The transformers are equipped with specific handling attachments.
n
Iifting with slings (figure 1).
For a transformer without an enclosure lifting is carrieed out using the 4 lifting lugs
and for a transformer with an enclosure using 2 lifting lugs. The slings should not
form an inside angle greater than 60°.
60°
maxi
n
Iifting with a fork lift truck (figure 1).
Remove the rollers and insert the forks in the base channels.
n
towing
Towing the transformer, with or without enclosure, must be performed from the
underbase. Holes of 27 mm diameter are provided for this purpose on all sides of the
underbase. Towing can only be carried out in two directions:
parallel to the underbase axis and perpendicular to that axis.
GEa 215000 c 1/48 Page 3 Mercredi, 17. mars 1999 4:02 16
Trihal
receipt and handling
n
fitting the rollers
2
N
either by lifting with slings (figure 1);
N
or by lifting with a fork lift truck (figures 1 and 2).
In this case position the lifting forks in Trihal’s underbase channels.
Place timbers of a greater height than the rollers under the channels and lower the
transformer onto them.
Position the jacks and remove the timbers.
Attach the rollers in the desired position (two bi-directional rollers).
Remove the jacks and allow the Trihal to rest on its rollers.
rollers
Note
: Trihal transformers are generally wedged during transport using timbers that
are attached to the vehicle’s base. It is thus essential to remove these timbers
before lifting the transformer.
timbers
jacks
GEa 215000 c 1/48 Page 4 Mercredi, 17. mars 1999 4:02 16
Trihal
installation
general information
Due to the absence of any liquid dielectric, there is no risk of liquid “cold” (spillage)
and “hot” (combustion) pollution, and due to the qualities of Trihal transformers, no
fire precautions are necessary.
n
The Trihal transformer should not be installed in a flood hazard area.
n
It should not be installed at an altitude above 1000 metres, unless the altitude is
specified at the time of ordering.
n
The transformer is designed to operate at rated power in the ambient temperatu-
res detailed below.
n
The ambient temperature of the substation, where the transformer is installed,
should be within the following limits:
- minimum temperature: – 25°C;
- maximum temperature: + 40°C (unless a special request is made for a specially
designed transformer to operate in higher ambient temperatures).
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