Design of the electrical installation services of a bank

Τίτλος

Design of the electrical installation services of a bank

Θέμα

Power electronics

Design and engineering

Fire alarms--Design and construction

Illuminations

Δημιουργός

Aristides, Aristos

Εκδότης

Library of Cyprus University of Technology

Ημερομηνία

1992

Συνεισφέρων

Demetriouu, J.

Δικαιώματα

Απαγορεύεται η δημοσίευση ή αναπαραγωγή, ηλεκτρονική ή άλλη χωρίς τη γραπτή συγκατάθεση του δημιουργού και κάτοχου των πνευματικών δικαιωμάτων.

Μορφή

pdf

Γλώσσα

eng

Τύπος

text

Αναγνωριστικό

EED0219

Σύνοψη

The work performed in this project deals with the electrical
design and the specialised services design. The specialised
services cover the uninterruptible power supply
(U.P.S.), fire alarm and telephone design. Of course at the
beginning the illumination design is performed.
The installation is of 5m height and there is a fault
ceiling located 1m below the true ceiling. Also a cable tray
is used for the conduit runs and it is located 0.3m below
the true ceiling.
The supply to our installation is a three phase 415Vrms
50 Hz T.T. system.
The cables which are used are PVC copper single core and
PVC SWA PVC cables.
The wiring method used is plastic conduit in walls and in
cable tray. Also trunking is used. Details for the wiring
method are given later.
The overcurrent protective devices which are used are the
'Type 1 miniature circuit breakers to BS 3871'. The ambient
temperature is 30 degrees.
Two installation methods are used: Method 3 (enclosed in
conduit on a wall orin trunking) and method 11 (cable
tray).
The external impedance is taken as Ze=0.4 Ohm and it remains
the same at all distribution boards. This is because
Ze is assumed as the worst case.
The illumination design specifies the accurate number of
luminaires used in the rooms of the installation. Also the
luminaires mainly used are universal colour fluorescents.
The electrical design is covered by the main distribution
board and nine auxiliary distribution boards. Lighting, power
and fixed appliances (cooker) circuits are supplied by
the auxiliary distribution boards.
The U.P.S. design makes use of the main distribution board,
the U.P.S. main distribution board and two auxiliary
distribution boards. The above together with the U.P.S. device
give uninterruptible power supply to the telephones in
the offices and office spaces.
The fire alarm design through the control unit, the smoke
and heat detectors and the manual call points provides
protection against the danger of a fire.
The telephone design covers a large scale of telephone
points and through the E.P.A.B.X. several operations are
performed by these telephone points.
The earthing as well as the inspection and testing are
carefully studied to provide safety and proper operation.
The costing is carefully planned to give accurate results.
For the costing the labour plus some other minor costs
are also included.
The drawings together with the writing part of the project
try to give a clear view of how the electrical services
of an installation are distributed.
In addition all the calculations done comply with the
number of regulations applied in the _installation.
Details, catalogues and specifications of the equipment
and material used are all provided at the end.