IG-049-EN version 02; 02/10/2017
6
Main components
General Instructions
ormaset
Kiosk-type prefabricated transformer substation
3. Main components
The
ormaset
transformer substation comprises the
following main components:
• Prefabricated concrete enclosure.
• Electrical equipment
3.1. Prefabricated monoblock concrete enclosure
The prefabricated enclosure is made up of the following
elements:
1
Enclosure
2
Removable roof
3
Compartments
3.1
Medium voltage switchgear
3.2
Distribution transformer
3.3
Low voltage switchgear
4
Access doors
4.1
Medium voltage area
4.2
Low voltage area and transformer
5
Ventilation grilles
5.1
Inlet grille
5.2
Outlet grille
6
Cable accesses
6.1
Pre-punched holes measuring 150 mm in diameter for medium voltage
cable input/output
6.2
Pre-punched holes measuring 110 mm in diameter for low voltage
cables
7
Earth cable access (holes measuring 20 mm in diameter)
8
Dielectric liquid collection pit
9
Earthing circuits
9.1
Protective earthing circuit (metallic parts)
9.2
Operational earthing circuit (neutral)
9.3
Roof earth connector braided cable
10
Hole for low voltage auxiliary supply
11
Cable support for anchoring the power transformer supply cables
12
Lighting and auxiliary services
13
Document holder with information regarding
ormaset
Figure 3.1.
Detail of main components of
ormaset
Summary of Contents for Ormazabal ormaset
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