IG-049-EN version 02; 02/10/2017
20
Operations sequence
General Instructions
ormaset
Kiosk-type prefabricated transformer substation
10.2. Connecting the generator set before zero switching
ormaset
has an auxiliary input measuring 140 mm in
diameter that allows for a low voltage auxiliary supply.
When not in use, this auxiliary input has a lid that maintains
the IP 23D rating, in accordance with IEC 60529. It can only
be removed from the inside of the concrete enclosure.
Working in the vicinity of live voltage. Operation which
can only be carried out by specialist personnel, in
accordance with the utility company's procedures and
with rules on electrical safety.
Figure 10.4.
Detail of input for auxiliary supply in an
ormaset
enclosure
The cables from the generator set should run to inside the
ormaset
prefabricated enclosure through the hole fitted
for this purpose. Proceed as follows to open the hole.
1.
Loosen the wing nut from inside the prefabricated
enclosure.
Figure 10.5.
Loosen the wing nut
2.
Loosen the wing nut and the clamp. Set aside both
parts.
Figure 10.6.
Loosen the wing nut and the clamp
3.
Open the hole by pushing the cover towards the outside
of the enclosure. Set aside the cover along with the
wing nut and the clamp, in order to close the hole when
auxiliary supply with the generator set is complete.
Figure 10.7.
Push the cover
4.
Insert the generator set cables through the open hole.
The power cable connection from the auxiliary unit to
the low voltage distribution board will only be made
once the opening of the medium voltage cubicle's
switch and the absence of current (momentary
interruption of service) have been checked.
Summary of Contents for Ormazabal ormaset
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