Enterprises Division
REFERENCE
REVISION
ENGINEERING DEPARTMENT
N.SS 45-661
0
DOCUMENT TYPE: Specification
DATE: 2008-03-14
COMPILED BY
TITLE: Specification for Electrical, Air Conditioning and Ventilation
installations of Substation Control Buildings
...................................................
A Naude
Senior Technician
THIS DOCUMENT HAS BEEN SEEN AND ACCEPTED BY:
APPROVED BY
Specialist
...................................................
Discipline Manager
S Maharaj
Senior Manager
Power Delivery
Senior Manager Power Delivery
AUTHORIZED BY
...................................................
N Singh
General Manager
Enterprises Engineering
REVISION
C.A.N.
REVISED BY
DESCRIPTION OF REVISION
APPROVAL
DATE
DATE OF LAST REVIEW:
DATE OF NEXT REVIEW: 2008-03-03
Note: These dates can be changed without affecting the revision status of
the document.
SPECIFICATION FOR ELECTRICAL, AIR
CONDITIONING AND VENTILATION
INSTALLATIONS OF SUBSTATION CONTROL
BUILDINGS
CONTENTS
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PAGE
1. SCOPE ............................................................................................................................................... 3
1. SCOPE ............................................................................................................................................... 3
2. NORMATIVE REFERENCES............................................................................................................. 3
3. DEFINITIONS ..................................................................................................................................... 3
4. ABBREVIATIONS ................................................................................................................................ 4
PART 1: ELECTRICAL INSTALLATION ................................................................................................ 5
5. GENERAL ........................................................................................................................................... 5
5.1 Scope of Work............................................................................................................................... 5
5.2 The Contractor’s responsibility...................................................................................................... 5
5.3 System Conditioning ..................................................................................................................... 5
6. REQUIREMENTS ................................................................................................................................ 5
6.1 Material ......................................................................................................................................... 5
6.2 Distribution Boards ........................................................................................................................ 5
6.3 Equipment ..................................................................................................................................... 6
6.4 Cables ........................................................................................................................................... 6
6.5 Trunking And Cable Tray .............................................................................................................. 6
6.6 Conduit And Accessories .............................................................................................................. 7
6.7 Conductors And Wiring ................................................................................................................. 7
6.8 Switch – Disconnectors, Light Switches, Socket-Outlets And Push-Buttons ............................... 7
6.9 Luminaires And Lamps ................................................................................................................. 7
6.10 Fixing Of Luminaires ................................................................................................................... 8
6.11 Connections ................................................................................................................................ 8
6.12 Installation ................................................................................................................................... 8
6.13 Air-Conditioning Points ............................................................................................................... 8
6.14 Fan Points ................................................................................................................................... 8
6.15 Earthing System .......................................................................................................................... 9
6.16 Labelling ...................................................................................................................................... 9
6.17 Approval Of Drawings And Factory Inspections ......................................................................... 9
6.18 Testing ........................................................................................................................................ 9
6.19 Electrical Contractor .................................................................................................................... 9
PART 2: AIR CONDITIONING AND VENTILATION INSTALLATIONS ............................................... 10
7. TECHNICAL REQUIREMENTS ....................................................................................................... 10
7.1 General ....................................................................................................................................... 10
7.2 Under-ceiling Split Units.............................................................................................................. 10
7.3 Extraction Fans For Battery Room.............................................................................................. 10
7.4 Pressurisation Fan/Filter unit for Control Room .......................................................................... 11
7.5 Chasing, Penetrations, and Making Good .................................................................................. 11
7.6 Compliance with Standards ........................................................................................................ 11
7.7 Electrical System Conditions ...................................................................................................... 11
7.8 Operating Conditions .................................................................................................................. 12
7.9 Painting / Corrosion Protection ................................................................................................... 12
7.10 Name plate ................................................................................................................................ 12
8.
DOCUMENTATION ...................................................................................................................... 12
8.1 Enquiry Drawing .......................................................................................................................... 12
8.2 Tender Drawings ......................................................................................................................... 12
8.3 Contract Drawings ...................................................................................................................... 12
8.4 Labelling ...................................................................................................................................... 13
8.5 Guarantee and Maintenance ...................................................................................................... 13
8.6 Operating and Maintenance Manuals ......................................................................................... 13
8.7 Adjusting and Testing ................................................................................................................. 13
9. TESTING AND FACTORY INSPECTION ........................................................................................ 14
10. OTHER REQUIREMENTS ............................................................................................................. 14
10.1 Unit Type .................................................................................................................................... 14
10.2 Name plates on air-conditioning units and fans ........................................................................ 14
TECHNICAL SCHEDULES A AND B .................................................................................................... 15
ANNEXURE A: PROJECT DRAWINGS................................................................................................ 18
SPECIFICATION FOR ELECTRICAL, AIR
CONDITIONING AND VENTILATION
INSTALLATIONS OF SUBSTATION CONTROL
BUILDINGS
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1. SCOPE
This specification sets out Eskom’s requirements for the supply, delivery, installation, testing,
commissioning of electrical wiring, ventilation and air-conditioning of Control Buildings in Transmission
substations.
This document shall apply to all Eskom Transmission substations.
2. NORMATIVE REFERENCES
The following document contains provisions which, through reference in this text, constitutes
provisions of this specification. At the time of publication, the reference indicated was valid. Parties
using this document shall apply the most recent edition of the documents listed below
Occupational Health and Safety Act (OHSA), 1993.
SANS 121:2000: Hot dip galvanized coatings on fabricated iron and steel articles - Specifications and
test methods
SANS 1091:2004: National colour standard.
SANS 1507:2007: Electric cables with extruded solid dielectric insulation for fixed installations
(300/500 V to 1 900/3 300 V)
SANS 10142-1: The wiring of premises – Part 1: Low-voltage installations.
SANS 10198: The selection, handling and installation of electric power cables of rating not exceeding
33kV
SANS 10400:1990: The application of the National Building Regulations
3. DEFINITIONS
Conduit: pipe, usually of diameter not exceeding 50 mm, that allows conductors and cables in
electrical installations to be drawn in and to be replaced
Electrical Installation: means any machinery, in or on any premises, used for the transmission of
electricity from a point of control to a point of consumption anywhere on the premises, including any
article forming part of such an installation irrespective of whether or not it is part of the electrical circuit.
Distribution Board: enclosure that contains electrical equipment for the distribution or control of
electrical power from one or more incoming circuits to one or more outgoing circuits.
Socket-outlet: device that a) has two or more metallic spring contacts designed to accept the
corresponding pins of a plug, b) is designed for fixing onto or into a building element or other flat
surface, and c) is arranged for connection to the wiring of an installation.
Switch-disconnector: a switch that, in the open position, satisfies the isolating requirements specified
for a disconnector
Terminal: device in or on which conductors can be terminated and that provides substantial electrical
connections and supports the terminations sturdily and safely.
Trunking: closed enclosure that comprises a base with a removable cover that is intended to
completely surround insulated conductors and cables in electrical installations and accommodate other
electrical equipment.
SPECIFICATION FOR ELECTRICAL, AIR
CONDITIONING AND VENTILATION
INSTALLATIONS OF SUBSTATION CONTROL
BUILDINGS
4. ABBREVIATIONS
A: Ampere
Hz: Hertz
kA: kiloAmpere
LV: low voltage
V: Volt
PVC: polyvinylchloride
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SPECIFICATION FOR ELECTRICAL, AIR
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PART 1: ELECTRICAL INSTALLATION
5. GENERAL
5.1 Scope of Work
The supply, delivery, installation, testing, commissioning, handing over and maintenance of all
materials and equipment specified herein or implied in the following pages and drawings required for
the complete electrical installation.
NOTE: The onus lies entirely with the contractor to ensure that all pipes, sleeves and all conduits
required in concrete slabs are provided and co-ordinated with other services before any concrete is
poured.
5.2 The Contractor’s responsibility
a) The Contractor shall be responsible for all electrical design necessary to ensure full co-ordination
between the various services in the building to avoid clashing of services and for the design and
arrangement of equipment in distribution boards.
b) The Contractor shall also ensure that the trunking is fitted correctly in accordance with the design
drawing.
5.3 System Conditioning
5.3.1 Alternating Current (AC)
(a)
Voltage: 400/230 V AC
(b)
Fault Current:
Main LV Board: 10kA
Lighting and Power DB: 5 kA
Air-conditioning DB: 5kA
Flood Lighting DB: 10 kA
5.3.2 Direct Current (DC), for Emergency Lighting
(a)
Voltage: 110 V DC or 220V DC as specified on the Schematic Diagram drawing.
(b)
Fault Current: 2,5 kA
6. REQUIREMENTS
6.1 Material
All material supplied shall be in accordance with SANS 10198 and SANS 62262.
6.2 Distribution Boards
a) The Distribution Board to be installed within the Control Room shall be free standing with doors,
mounting against the wall.
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b) The width of the Distribution Board shall not exceed 2500mm. For its proposed General
Arrangement refer to detail “A”, on the Schematic Diagram drawing.
c) The Distribution Board drawings, showing front view with sections, equipment arrangement,
equipment type, rating, labels, and gland plates shall be submitted to the relevant project manager in
Eskom for approval before commencement of manufacturer.
d) The Distribution Board with its equipment shall be labelled as specified on the Schematic Diagram
drawings, and in accordance with standard drawing 0.00/5007.
e) The busbars within the Distribution Board sections shall be supported on insulators.
f) The cables used for connections in the Distribution Board shall have PVC insulation. The colour of
the insulation of the red phase shall be red, the white phase shall be white, the blue phase shall be
blue and the neutral conductor shall be coloured black.
g) All terminals on equipment, neutral and earth shall be of the pressure-plate type with captive
screws. Terminals with clamping screws that are in direct contact with the conductors shall not be
accepted.
h) All busbars and connections shall be shrouded using Dolaron material. They shall be capable of
withstanding the full test voltage of 2000 V AC.
i) The local switches shall have provision for locking in the open position, using 8 mm diameter
padlock. Standard handle lock device suitable for the F35DN switch-disconnector shall be used.
j) The Distribution Board sections shall have provision for cables and trunking entries as shown in the
General Arrangement on the Schematic Diagram drawing.
k) The Distribution Board sections shall be equipped and connected as shown on the various
Schematic Diagrams diagram drawings.
l) The Distribution Board shall be constructed in accordance with SABS 1180: Part 2.
m) The Distribution Board shall be painted grey (G29) in accordance with SANS 1091.
o) The Cable gland plates shall be provided for all armoured and unarmoured cables. They shall have
the necessary support to prevent the movement of the cables.
p) Power terminals shall be installed in each section of the distribution board for the incoming service
connection cables.
6.3 Equipment
a) All equipment in the Distribution Board sections shall be as indicated on the Schematic Diagram
drawings.
6.4 Cables
a) All cable types shall be as indicated on the Schematic Diagram drawings.
b) Stranded copper conductors and armoured cables having a voltage rating of 600/1000 V shall be
used.
6.5 Trunking And Cable Tray
a) Trunkings shall be fabricated from 1,6 mm sheet steel, measuring 41,3 x 41,3 with clip-on PVC
white covers between the luminaries.
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b) Trunkings shall be installed on top of trusses in the ceiling of the Control/Carrier Room.
c) Trunkings shall be fabricated from 1,0 sheet steel, measuring 127 x 76,2 with clip-on PVC white
covers. Trunkings shall be installed on the inside wall in the Control Room and vertically from the
Distribution Board to the ceiling and within the roof void.
d) For corrosion protection, hot dip galvanised zinc coating shall be used in accordance with SANS
121.
e) Vertical trunkings and covers shall be painted with epoxy powder coating. The colour of the coating
shall be white (G80), in accordance with SANS 1091. Trunkings in laid in roof void may not be painted.
f) Light duty cable trays shall be installed in roof void of battery room, with overall width of 50mm for
cables and earth wires as indicated on the drawings.
6.6 Conduit And Accessories
a) All conduit work shall be carried out using high impact PVC conduits and accessories.
b) Conduits for light switches, socket-outlets and push-buttons shall be installed flush in walls.
6.7 Conductors And Wiring
a) All wiring shall be carried out using standard PVC insulated copper conductors and bare copper
earth wires,
b) The wiring shall run in trunkings and conduits as shown on the various Schematic Diagram
drawings.
c) The rated voltage of the wiring shall be 600/1000 V.
6.8 Switch – Disconnectors, Light Switches, Socket-Outlets And Push-Buttons
a) Switch-Disconnecting Points for Air Conditioning units shall be as follows:
i)
Outside Control Room,
ii)
TP30A + N+E,
iii)
Surface type,
iv)
IP65 rating.
b) The colour of flush-type light switches and socket-outlets shall be white.
c) Outdoor light switches shall have a protection rating of IP65.
d) Outdoor socket-outlets shall have a protection rating of IP54.
6.9 Luminaires And Lamps
a) Luminaires and lamps shall be supplied and installed by the Contractor.
b) The technical requirements of luminaires and lamps are stated in the technical schedules drawing.
c) The colour of lamps used shall be cool white.
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6.10 Fixing Of Luminaires
a) Luminaires in the Control Room shall be installed in donn ceiling.
b) Luminaires in other rooms shall be fixed under the ceiling.
c) Luminaires in the workshop and battery room shall be suspended from the ceiling with chains.
d) Luminaires shall be installed according to the manufacturer’s specification.
6.11 Connections
a) Tee-off connections of all earth and neutral wires in trunkings shall be made with crimped ferrules.
6.12 Installation
a) The entire electrical installation in the building shall be installed flush, with the exception of trunkings
and cables in the roof void.
b) The Loop-in system shall be used throughout the installation.
6.13 Air-Conditioning Points
a) The Contractor shall supply, install and connect up the following:
i)
Outside Control Room: TP30A +N+E switch-disconnectors, surface mounted, IP65 protection
rating, on outside wall next to outdoor air-conditioning units.
ii)
Inside Office1: DP10A switch-disconnectors, flush in wall.
iii)
Circuits each with cables and earth wire in trunking and on cable tray in Operating,
Conference, & Control/Carrier Room roof voids.
6.14 Fan Points
6.14.1 Battery Room - Extraction Fans
a) The Contractor shall supply, install and connect up the following :
i)
TP10A switch-disconnectors with earth terminal, Class I Div I(Zone 1), flush-mounted on the
inside of the battery room next to the fan.
ii)
One circuit with BVX4DCV armoured cable to the switch-disconnector. The Black wire shall
be used as an earth wire and taped with green tape at both ends.
iii)
The “Start” and “Stop” buttons with indicator lamps shall be provided at the Distribution Board
in Control Room.
iv)
Auxiliary contacts N/O and N/C shall be provided at the contactors.
6.14.2 Control Room - Pressurisation Fan
The Contractor shall supply, install and connect up the following:
i)
DP20A switch-disconnector with IP65 rating and surface-mounted on outside brick wall
adjacent to fan .
ii)
Speed Control Unit within Control Room adjacent to fan.
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Circuit with 2 x 4 + 2,5 E/W, in 20 dia PVC, flush in wall to switch-disconnector and Speed
Control Unit.
6.15 Earthing System
The installation shall be earthed in accordance with the requirements of SANS 10142-1.
6.16 Labelling
a) All labelling shall be as specified in accordance with standard drawing 0.00/5007.
b) The position of labels shall be as indicated on the Schematic Diagram drawings.
c) All cover plates shall be labelled with circuit numbers using 7mm high characters.
6.17 Approval Of Drawings And Factory Inspections
6.17.1 Distribution Boards
6.17.1.1 Drawings
a) The manufacturer’s drawings shall be submitted for approval before manufacture can take place.
b) The title block shall be as per detail “B” on the Schematic Diagram drawing.
6.17.1.2 Factory Inspections
a) The distribution board shall be inspected before being delivered to site. This inspection shall entail a
thorough check to ensure complete compliance with this specification.
b) Full testing of the entire distribution board circuitry will be done when so requested by Eskom.
c) The Contractor shall submit a request for the inspection to the Project manager at least seven (7)
days prior to the scheduled date of inspection.
d) To facilitate this inspection the manufacturers shall provide power supplies for 230 V AC and 110 V
DC or 220V DC. In addition one electrician shall be made available to assist in checking the circuitry.
e) The Contractor shall ensure that the boards are correct and complete before the inspection.
f) The equipment as specified on the drawing need not be approved, but any other equivalent
equipment shall require approval by Eskom.
6.18 Testing
a) All installations shall be tested by an accredited person appointed by the Contractor.
b) After testing, a certificate of compliance and notice of commencement of installation shall be issued
in accordance with the necessary regulations.
6.19 Electrical Contractor
The electrical contractor shall annually register with the relevant Electrical Contracting Board.
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PART 2: AIR CONDITIONING AND VENTILATION INSTALLATIONS
7. TECHNICAL REQUIREMENTS
7.1 General
a) The Contractor shall be responsible for the final selection of the split units and extraction fans to
obtain required indoor conditions based on given design data and construction detail of building. The
specified cooling capacity/heating for each unit is estimated only and shall be verified by the
Contractor, if required. The Contractor shall ensure full co-ordination between the various work being
done within the building.
b) All packaged or works-assembled equipment shall be well proven products of specialist
manufacture, for which comprehensive printed literature is available covering performance, installation,
commissioning and spare parts, also manufacturing quality specifications, arrangement drawings,
electrical schematic and wiring diagrams.
c) The air-conditioning units and extraction fans shall be constructed to allow for ease of maintenance
and parts replacement. Filters shall be readily accessible. d) Hard wire remote control systems shall
be used, where possible.
7.2 Cassette split units
a) The air-conditioning system shall consist of a VRV system and cassette split units as shown on the
drawing.
b) The Contractor shall allow for the supply and installation of associated refrigerant and drain pipe
work, mounting brackets, power cables from switch-disconnectors to the air handling units, and control
and power black PVC sheath unarmoured cables between air handling units and air condensing units,
etc.
c) These units shall be fitted with compressors, electronic controls, having freeze-up protection, and
high pressure safety cut outs. These units shall be reverse cycle with cooling and heating. The units
shall be supplied with an automatic restart relay at a specified temperature on restoration of power
supply. Factory built remote control shall be installed.
d) The cooling and heating capacity shall be as shown in Schedule A
7.2.4 Installation
a) The air-conditioner shall be installed in accordance with the Air-conditioning Installation drawing.
7.3 Extraction Fans For Battery Room
a) The fans shall be spark-proof epoxy coated fan.
b) The fan motor shall be rated as follows:
•
400 V AC
•
3-phase
•
Class 1 Div.II(Zone 2) Ex“e” with IP54 protection.
c) The Contractor shall allow for the supply and installation of the armoured power cable between the
switch-disconnectors and the fan units.
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7.4 Pressurisation Fan/Filter unit for Control Room
a) The fan shall be mounted 300 mm under ceiling to top of fan with primary and secondary filters, and
capacity as indicated on the schedule.
b) The motor shall be rated as follows:
•
230 V AC
•
Single-phase
•
IP54 protection rating.
c) The Contractor shall allow for the supply and installation of the armoured power cable between the
speed control unit and the Fan/Filter unit.
7.5 Chasing, Penetrations, and Making Good
a) No alterations or additions affecting structural strength or appearance shall be made to the building
without prior approval in writing.
b) Where cables and pipes pass through holes in walls, the opening shall be sealed with vermiculite
plaster or other approved non-flammable equivalent material for the full thickness of the wall.
c) The holes for fixing the bolts and saddles on outside walls shall be made between the face bricks
and not in bricks.
d) Outdoor trunking shall be sealed at the bottom and top with foam.
e) The distance between the side of outdoor unit and trunking shall be the same for each unit.
f) Trunking covers shall not be sealed.
7.6 Compliance with Standards
The installation shall comply with the latest editions of the following:
i)
Occupational Health & Safety Act, 1993.
ii)
SANS 10400: The application of the National Building Regulations.
iii)
SANS 10142-1: The wiring of premises – Part 1: Low-voltage installations.
7.7 Electrical System Conditions
a)
Voltage: 400/230 V AC
b)
Fault levels at 400/230 V: Refer to Section 5.3
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7.8 Operating Conditions
a) Outdoor Operating Temperatures
i)
Maximum: 35ºC
ii)
Minimum: 5ºC
iii)
Average: 20ºC
b) Indoor Operating Temperatures
i)
Maximum: 27ºC
ii)
Minimum: 18ºC
7.9 Painting / Corrosion Protection
a) All ferrous materials and equipment shall be provided at manufacturer’s works with a protective
primer which shall be made good during construction. After erection they shall be thoroughly cleaned,
degreased and given a priming undercoat and two finishing coats suited to the application. Where
ferrous pipes, etc. are to be insulated they shall be coated with red oxide zinc richer primer prior to
application of insulation.
b) Painting shall be carried out by experienced tradesmen, in accordance with SABS 1391 Part III.
c) Fixing bolts /washers / nuts and supporting brackets shall have a hot dip (galvanised) zinc coating in
accordance with SABS 763.
7.10 Name plate
Name plate shall be fixed on each unit.
8. DOCUMENTATION
8.1 Enquiry Drawing
Enquiry drawing indicates schematically the location of units, and is not to be used for manufacture nor
for installation.
8.2 Tender Drawings
a) Tenders may submit drawings or sketches with their tenders to illustrate alternative offers and/or to
clarify their tenders.
b) Where necessary, manufacturer’s outline drawings showing required clearance for maintenance
should be included.
8.3 Contract Drawings
a) Contractors shall submit three prints of the contract drawings in accordance with drawing 0.00/1800,
for approval at least one week before manufacture is due to commence.
b) Approval will be by letter listing the drawings and the allocated numbers. If a drawing is not
approved, a marked-up print showing the required revisions may be returned to the Contractor.
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c) No drawing which has been submitted may be cancelled by the Contractor without prior agreement
and, once issued, no alterations, additions or omission may be made to or from any drawing without
re-issuing it under a new revision number.
8.4 Labelling
a) All labelling shall be as specified in accordance with standard drawing 0.00/5007.
b) The position of labels shall be as indicated on the Schematic Diagram drawings.
c) All cover plates shall be labelled with circuit numbers using 7mm high characters
8.5 Guarantee and Maintenance
a) Guarantee and Maintenance period shall be 12 months for air-conditioning units and fans.
b) During the guarantee period, the plant shall be inspected at monthly intervals and a report
submitted in writing after each inspection, noting any deviations in plant performance and the probable
reasons thereof.
c) A copy of the monthly report shall be handed to the local plant supervisor.
d) Attention shall be drawn to any unauthorised alteration to control or safety device settings which
have occurred in the interim.
8.6 Operating and Maintenance Manuals
a) Three copies of Operating and Maintenance Instruction Manuals are required for air-conditioning
unit and fans.
b) Every manual shall have a durable hard cover bearing a brief title which identifies the building and
the plant. The title page shall give additional references, including a list of relevant contract drawings.
c) The manual shall contain :
i)
SECTION A : Description of plant delivered under this contract.
ii)
SECTION B : Complete commissioning report, including final setting of all control
and safety devices.
iii)
SECTION C : Manufacturers leaflets giving equipment ratings, including batteries if
any, installation and maintenance instructions and spares list.
iv)
SECTION D : Contractors recommendations, concerning plant maintenance.
8.7 Adjusting and Testing
a) All final adjustments shall be recorded in the commissioning report which is included in the
instruction manual.
b) All tests stipulated in this specification shall be carried out and shall include but not be limited to:
i)
Checking operation of all controls and safety devices.
ii)
Measuring load currents and checking overload relay settings, times
iii)
Checking that all filters fit properly to avoid air bypass and that all filters are easily
removable and replaceable.
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9. TESTING AND FACTORY INSPECTION
a) Refer to Section 6.18 for testing of the electrical installation from the switch-disconnectors to the
air-conditioning units.
b) The fans shall be inspected before shipment.
c) A request for inspection shall be submitted to the project manager at least 7 days prior to the
scheduled inspection date.
10. OTHER REQUIREMENTS
10.1 Unit Type
a) Air-conditioning units for the Control Building shall be from the same manufacturer.
10.2 Name plates on air-conditioning units and fans
a) Aluminium name plate shall be used on outdoor and indoor units and pop-riveted to the units.
b) The following information shall be given on the name plate:
i)
manufacturer’s name,
ii)
model number,
iii)
serial number,
iv)
year of assembly,
v)
cooling capacity in kW,
vi)
voltage in V,
vii) power in kW for extraction fan, and
viii) nominal current in A for extraction fan
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TECHNICAL SCHEDULES A AND B
Schedule A : Eskom’s particular requirements
Schedule B : Guarantees and technical particulars of equipment offered
ITEM
DESCRIPTION
SCHEDULE A
1
CONTROL ROOM AIR-CONDITIONING
INSTALLATION
1.1
(a)
(b)
(c)
(d)
(e)
(f)
VRVIII system :
Manufacturer
Supplier
Country of origin
Country of assembly
Year of assembly
Model number
(i) indoor unit control room
(ii) indoor unit office
(iii) outdoor unit
Serial number
(i) indoor unit
(ii) outdoor unit
Total Quantity Required
Cooling Capacity (kW), each
Heating Capacity (kW), each
Full Load Current/Unit (A)
Maximum Starting Current/Unit (A)
Noise Level dB (A)
Reverse cycle
Type of Compressor
Refrigerant
High Pressure Safety Cut/Out
Freeze up Protection Cut/Out
Filtration Efficiency (new) %
Electronic Controls
Automatic restart on restoration of power
supply
Additional contacts
(i) make contact
(ii) break contact
Is a TP30A MCB sufficient
for the protection of unit
Indoor ambient temperature
AC Voltage (V)
Name plate on indoor & control
units
(g)
(h)
(i)
(j)
(k)
(l)
(m)
(n)
(o)
(p)
(q)
(r)
(s)
(t)
(u)
(v)
(w)
(x)
(y)
(z)
DAIKIN
xxxxxxxx
xxxxxxxx
xxxxxxxx
Latest required
xxxxxxxx
xxxxxxxx
xxxxxxxx
xxxxxxxx
xxxxxxxx
Specify
Specify
41
N
Specify
R-410A
Yes
Yes
Specify
Yes
Yes
Yes
Yes
Yes
+18 to + 270C
400 V 3-Phase
YES
SCHEDULE B
SPECIFICATION FOR ELECTRICAL, AIR
CONDITIONING AND VENTILATION
INSTALLATIONS OF SUBSTATION CONTROL
BUILDINGS
Reference:
Revision:
Page:
0
16 4 of 20
Schedule A : Eskom’s particular requirements
Schedule B : Guarantees and technical particulars of equipment offered
ITEM
DESCRIPTION
3
BATTERY ROOM VENTILATION
INSTALLATION
3.1
(a)
(b)
(c)
(d)
(e)
(f)
(g)
(h)
(i)
(j)
(k)
(l)
(m)
Roof Mounted Extraction Fan :
Supplier
Manufacturer
Model Number of
(i) Plate mounted mixed flow impeller
(ii) Motor
Material of housing
Capacity (m3/s), each at final pressure
Outlet Velocity (m/s)
Efficiency (%)
Total Quantity Required
Motor Speed (rpm)
Motor Power (kW)
Full Load Current (A)
Maximum Starting Current (A)
Enclosure of motor
(n)
AC Voltage (V)
(o)
(p)
Noise Level dB (A)
Aluminium name plate on fan and motor
SCHEDULE A
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Class I Div. II
(Zone 2) (Ex“e”)
IP54
400 V Three
Phase
60
Yes
SCHEDULE B
SPECIFICATION FOR ELECTRICAL, AIR
CONDITIONING AND VENTILATION
INSTALLATIONS OF SUBSTATION CONTROL
BUILDINGS
7.5
Reference:
Revision:
Page:
0
17 4 of 20
CONTROL BUILDING:
ITEM
DESCRIPTION
5
CONTROL/CARRIER ROOM
VENTILLATION INSTALLATION
5.1
(a)
(b)
(c)
(i)
(ii)
(d)
(e)
(f)
(g)
(h)
(i)
(j)
(k)
(l)
(m)
(n)
Pressurisation Fan Filter Unit:
Supplier
Manufacturer
Model Number
Plate mounted double
inlet centrifugal flow impeller.
Motor
Material of pitched mounting roof unit
3
Capacity (m /s), each at final pressure
Outlet Velocity (m/s)
Efficiency (%)
Total Quantity Required
Motor Speed (rpm)
Motor Power (kW)
Full Load Current (A)
Maximum Starting Current (A)
Enclosure of motor
AC Voltage (V)
(o)
(p)
Noise Level dB (A)
Aluminium name plate on fan and motor
SCHEDULE A
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IP54
230 V Single
Phase
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Yes
SCHEDULE B
SPECIFICATION FOR ELECTRICAL, AIR
CONDITIONING AND VENTILATION
INSTALLATIONS OF SUBSTATION CONTROL
BUILDINGS
Reference:
Revision:
Page:
0
18 4 of 20
ANNEXURE A: PROJECT DRAWINGS
ITEM
DRAWING NUMBER
1.
Substation Drawings:-
2.
TITLE
SHT 1
Control Building
Electrical Installations
SHT 2
Control Building
Air-conditioning and
Ventilation Installation
SHT 3
Control Building
Electrical Installation
Schematic Diagram
Standard Drawings:0.00/5007
0.00/1310
0.00/1290
0.52/1037
0.52/1038
Engraving and labelling requirements
Power cable code
Cable number tag
Pad lockable lever lock
Panel fasteners