SECTION 260510
BASIC ELECTRICAL REQUIREMENTS
PART 1 - GENERAL
1.1
SUMMARY
A.
General: Read this Section with the Design Drawings, Conditions of Contract and other
Sections of the Specifications.
B.
Section Includes: The functional and technical requirements for supplying, installing,
testing and commissioning of all electrical works complete in accordance with the
requirements of the Contract Documents, which shall include, but not be limited to the
following:
1.
Main and sub-main distribution
boards.
2.
Distribution
boards.
3.
Earthing system
(Grounding).
4.
Cable trays/Ladder rack, cable trunking, conduits, UPVC ducts and
manholes.
5.
Main feeders, Power cables and bus
ducts.
6.
Power, lighting, circuit wiring and
accessories.
7.
Emergency power
generation/UPS.
8.
Fire detection and alarm
system.
9.
Lighting
fittings.
10.
Power Factor
Correction.
11.
Lightning protection
system.
12.
Security and IT
systems.
13.
SCADA
system.
14.
Renewable Energy
system.
15.
Testing, verification and
commissioning.
C.
1.2
Related work specified elsewhere: The following related services installations are
specified elsewhere in other Divisions of the Specification and the Contractor shall
coordinate these works with the Electrical Installations and with all other works:
1.
Fire
Protection/Fighting.
2.
Plumbing/Mechanical.
3.
HVAC and Building Automation
Systems
4.
Landscape
works.
5.
Architectural, Irrigation and
Miscellaneous.
REFERENCES
UNITED ENGINEERING AND
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BASIC ELECTRICAL REQUIREMENTS
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The minimum standards for products specified shall be including but not limited to latest
relevant IEC or BSI standards. Except as otherwise specified herein, perform work in
accordance with specification codes and standards cited therein and to latest
applicable addenda and supplements.
1.
Relevant IEC
Standards.
2.
Relevant BSI
Standards.
3.
MEW Regulations issued by Ministry of Electricity and Water,
Kuwait.
4.
Kuwait Fire Department
requirements.
5.
Technical Specifications of Ministry of Communication,
Kuwait.
6.
Other Local Authority/Bodies requirements viz. Kuwait Municipality, Kuwait
National
Petroleum Company, Ministry of Civil Aviation etc. as
applicable.
1.3
A.
SYSTEM DESCRIPTION
System Parameters:
1.
All equipment and materials used in the electrical installation work shall be so
designed and constructed that they shall provide satisfactory service without any
harmful effects for prolonged and continuous periods in the worst climatic
conditions prevailing in Kuwait as stated hereunder:
a.
40 Deg. C if installed within buildings having good heat insulating
properties and adequate ventilation.
b.
52 Deg. C if installed in well ventilated positions and shaded from direct
sunlight throughout the day.
c.
84 Deg. C if exposed to direct sunlight.
2.
Minimum temperatures likely to occur are:
a.
-6° Deg. C
outdoors. b.
0° Deg. C
indoors.
3.
The temperatures quoted above make no allowance for heat generated from
the equipment itself or from any other equipment installed in the vicinity.
4.
The capacity and rating of all electrical equipment and materials given are, unless
otherwise indicated, Kuwait rating i.e., rating when equipment is operating under
Kuwait Climatic Conditions. Provide the basis of the normal rating and the
derating factors applied in each case.
5.
Where specific sizes are indicated e.g., cable sizes, due allowances have been
made in
the design for the climatic conditions of Kuwait and derating has been applied.
6.
During stoppage of air-conditioning for extended periods, equipment shall
withstand and work satisfactorily in temperature and humidity conditions
specified in the previous paragraph.
7.
Special attention shall be given to high dust content in the atmosphere from
time to
time and special steps to prevent the ingress of dust shall be provided.
8.
The Contractor shall state the environmental conditions which apply to the
reliable working of the system offered, especially for the transistors, integrated
circuits, central processing equipment and memories, etc.
9.
Periods of high humidity are common and a relative humidity of 100% at 30° C
has
been recorded. Violent sand storms are common and even on comparatively still
days fine dust is carried in suspension in the air.
B. System
Performance:
1.
The performance of various systems and equipment shall be as specified
separately in each concerned section of this specification. The results and
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readings obtained shall be equal or better than the requirements of the IEE,
MEW, MOC, KNPC and with the relevant standards.
2.
The Contractor shall guarantee that all elements of the systems are of sufficient
capacity
to meet the performance requirements stipulated in or implied by the
Contract
Documents.
C. Design
Requirements:
1.
All electrical equipment, accessories and fittings shall be designed and
manufactured to operate continuously in the electricity supply system having
the following characteristics:
Voltage
:
415 volts ± 6 percent, 3 phase, 4
wire. Frequency
:
50 Hz. ± 4 percent.
Neutral
:
Solidly earthed.
Fault level
:
31 MVA at 415 volts for 1000 KVA, transformer
35 MVA at 415 volts for 1250 KVA, transformer
43 MVA at 415 volts for 1600 KVA, transformer
Fault duration :
0.5 seconds.
D.
Utility Services Connection:
1.
Power connection from MEW: The Contractor shall be responsible to coordinate
with MEW to obtain as-built drawings approval, load forms approval, MEW
inspection and energizing of all transformers. All required documents and follow
up with MEW shall be done by the Contractor to obtain power supply connection
as per the Programmer. The Contractor shall be responsible to obtain MEW
approval of the grid connected renewable energy system design before
construction.
2.
Contractor shall be responsible for MOC inspection and approval to provide
telephone connection to the site.
3.
Contractor shall be responsible for KFF inspection, approval and as-built
drawings and
commissioning of the system and approval from KFF.
4.
Acceptance certificate will be issued only after testing and commissioning
of all equipment with MEW permanent power supply.
1.4
SUBMITTALS
A.
General: All submissions for approval shall be submitted sufficiently in advance of
requirements to allow the Company ample time for checking and approving in
accordance with Contract Documents.
B.
Sample: Submit samples, as requested by the Company of all materials and
equipment specified herein in accordance with the requirements of the Contract
Documents and before ordering obtain written approval from the Company. All samples
shall be properly tagged when submitted for approval.
C.
Product Data:
1.
Manufacturer’s Data: Prior to the submission of Shop Drawings, submit to the
Company full details, specifications, installation instructions, etc., of all materials
and equipment proposed for use but in all cases no such materials/equipment shall
be ordered, delivered or installed without the prior written approval of the
Company to the Shop Drawings incorporating the said materials/equipment.
Any material or equipment which is not approved but installed shall be
removed and replaced at the Contractor’s expense.
2.
The details of materials and equipment shall include the following:
a.
Full technical specifications of equipment including construction, materials,
degree of protection, characteristic curves, diagrams, capacities, rating,
dimensions, fixing details, etc., certificate of origin.
b.
Relevant sheets of manufacturers’ catalogues, specifications, technical
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data, etc., certificates of origin for all equipment shall be submitted.
c.
The estimated current consumption and heat dissipation of any
equipment
proposed.
d.
Time current characteristic curves for all circuit breakers, fuses and earth
leakage relays.
e.
Detailed short circuit calculations; include all components shown on
schematic diagrams and discrimination level for up-stream and downstream breakers and busbars.
f.
Maintenance and supervisory statistics as approved by others for similar
systems.
3.
At the time of providing the above details submit a statement from manufacturer
to the effect that the proposed materials, equipment and systems’ performance
and functions comply fully with the relevant Clauses of the Specification and, in
case of deviation from the Specification, submit a schedule of deviations listing
all points not conforming to the Specification.
4.
At the same time submit a preliminary time schedule to indicate all logistical
elements
(i.e., design, submission for approval, ordering, shipping, delivery, installation,
etc.).
D.
Shop Drawings:
1.
General:
a.
The Electrical Drawings are intended to show the general arrangement of
work and the approximate location of equipment.
b.
Refer to all Contract Drawings to verify all spaces and conditions
affecting the
electrical work and to ascertain the location and routes of all services, ducts,
piping, etc., so as to maintain adequate clearance between electrical and
other services.
2.
In accordance with the Contract Documents prepare and submit for approval
before commencing any portion of the Works, Shop Drawings for the following
systems:
a.
Distribution switchgear and switch
boards. b.
Wiring materials and devices.
c.
Lighting drawings
. d. Power distribution system.
e.
Earthing system.
f.
Emergency power
generation. g. Lightning
protection system.
h.
Telephone system.
i.
Fire alarm system raceways.
j.
Cable trays and ladder, raceways and boxes, electrical identification.
k.
Communication system, Security system and extra low voltage
systems. l.
Underground duct banks.
m.
IT/Audiovisual systems.
n.
SCADA systems.
o.
Renewable Energy Systems
.
3.
Shop Drawings shall show, but not be limited to the
following:
a.
Exact routing of cables and bus ducts including sizes, and details of
installation of fire rated materials, and including all dimensions and exact
positions of wall/slab openings.
b.
Cable trays, ladders including routing, sizes, invert level of the trays and
details of supports and hangers, covers, sleeves, etc.
c.
Exact runs of conduits and trunking indicating whether surface or
embedded including sizes, draw boxes and junction boxes and the
number and sizes of wires in each run.
d.
Switchboards and distribution boards and control panels including location,
layout, dimensions, fixing details, rating of different components, cabling
and final connection arrangement.
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e.
Schedule of electrical board indicating type, rating, frame size and trip
setting for all circuit breakers and relevant instruments.
f.
Proposed supports and hangers for cable trays, trunking, conduits, cables,
lighting
fittings etc., including details of materials, finish, sizes and method of
fixing to structure.
g.
Exact routing of main earthing conductors, down conductors include
location
and dimensions of earth pits, number of earth rods and details of clamps,
connectors and test boxes.
h.
Main power schematic diagram and panel board wiring of various
distribution
boards, sub-main distribution boards, main distribution boards, busbar risers
to the main switch boards along with frame size of all breakers, rating and
size of busbars and rating/range of control and indicating instruments.
i.
Schematics and block diagrams of equipment configurations and
installation of various systems (extra low voltage systems) showing the
functional flow of systems, their activities, physical interfaces with other
systems and wiring diagrams showing equipment internal wiring
instruments.
j.
Outline drawings for various systems showing the physical system
elements, generator and other major equipment:
i)
General
layout.
ii)
Outline dimensions of the
equipment
iii)
Relations, connections and interfaces between all remote equipment
and devices.
iv)
Relations and connections at other system
interfaces.
v)
Wiring details at all terminal blocks, cable plugs, receptacles,
connectors, similar devices, laboratory furniture and benches, etc.
4.
Shop Drawings shall be drawn to a scale approved by the Company and shall
not be less than 1/100. Use 1/20 scale for all electrical and communication closets
details, and
1/50 scale for substation rooms including different
sections.
E.
Composite Shop Drawings:
Provide complete composite Shop Drawings showing the interrelationship of all services
above false ceiling with each other and with the surrounding civil and architectural
work. Composite drawings shall be to scales approved by the Company.
F.
Progress Record Drawings:
1.
Furnish and keep on the job site at all times one (1) complete and separate set of
blackline prints of the electrical work on which shall be clearly, neatly and
accurately noted, promptly as the work progresses, all electrical changes,
revisions and additions to work as actually installed. Wherever work is installed
other than as shown on the Drawings, such changes shall be noted.
2.
Indicate daily progress on progress prints by coloring in the various parts of the
Works as they are erected.
3.
No approval for payment of work installed will be given unless supported by
colored- up record prints as required above.
G.
As-built Drawings:
1.
At the conclusion of work, prepare and submit As-built Drawings prepared
from the latest progress prints.
2.
Contractor shall prepare As-built Drawings and submit and obtain approval from
MEW,
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3.
H.
1.5
A.
MOC, KFF, etc., for the respective services. Necessary follow-up, calculations
shall be submitted by the Contractor as required by these authorities. Contractor
is fully responsible to obtain approval from MEW electrical and HVAC As-built
Drawings including MEW inspection and commissioning within the time
schedule of the project as per Company and Company instructions. Contractor
shall be responsible for any delay to obtain power supply. The same is applicable to
MOC and KFF approval. Any delay will be penalized according to contract terms
and conditions.
In addition, submit sets of compact discs (CD&USB) in AutoCAD (DXF or DWG &
PDF) format of all
Shop Drawings, composite drawings, schedules and As-built
Drawings.
Operation and Maintenance Instruction Manuals
1.
At the time of submitting As-built Drawings, provide the Company with three (3)
properly printed and bound copies of operation and maintenance instruction
manuals for each system of Electrical Work to describe the various systems in the
fullest detail to facilitate the proper operation, maintenance, replacement of parts
and awareness of system characteristics. Such manuals shall include the
following:
a.
Index of as-built
drawings.
b.
General description of
systems.
c.
Manufacturers’ technical catalogues, dimensional drawings and wiring
diagrams for each and every type of equipment of different systems
installed.
d.
Operating instructions for various equipment and systems included
in the
installation work.
e.
Maintenance manuals for all equipment and systems included in the
installation work which need regular and specialized maintenance.
f.
Hardware and software facilities, functions and principles of particular
systems.
Original software licenses shall be provided for all systems.
g.
User’s manual for particular systems (i.e., security, Fire Alarm, etc.),
operation and instructions guide.
h.
Spare parts list with part numbers of various components of all equipment
used
in each system of the installation work.
2.
Bind the manuals in A4 size plastic covered loose leaf ring binders with hard
covers. Fold drawings larger than A4 and accommodate in the binder so that
they may be unfolded without being in any way detached from the rings.
QUALITY ASSURANCE
Installer Qualifications: Electrical works shall be executed by an approved CTC
Class II Contractor.
B.
Staff Qualifications
1.
Prior to commencing the Electrical Works submit for the Company’s approval
a staff organization chart of Contractor as per Contract Document together with
details of experience and qualifications of all Subcontractor’s engineers and
foremen proposed for such work in accordance with the Schedule at the end of
this Section.
C.
Regulatory Requirements: The electrical and communications materials and installation
shall be in compliance with the latest relevant BS, IEC and IEE, MEW, KNPC, MOC
regulations, Ministry of Civil Aviation and Kuwait Municipality.
D.
Quality of Materials
1.
It is not the intention of this Specification to provide all details of design and
fabrication.
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2.
3.
The Contractor shall ensure that the equipment has been designed and fabricated to
good and prevailing commercial practice in accordance with applicable
Engineering Codes and Standards. When specific requirements are stated in the
Specification that exceed and/or overlap requirements of the codes and standards
the Specification shall govern.
Design, material, fabrication, examination, testing, inspection, certification,
documentation, and operation shall conform to the following or any other
equivalent codes, regulations, standards, specifications, and addenda, as
applicable.
a.
Regulations for Electrical Installations Latest Edition, (MEW/R-1), issued
by the
Ministry of Electricity and Water, Kuwait and latest amendments.
b.
Regulations for Electrical Installations, Latest Edition, issued by the
Institution of
Electrical Engineers, London.
c.
IES/CIBS Code of Interior Lighting, issued by the Illuminating
Engineering
Society, London.
d.
CIE International Commission on
Illumination.
e.
IEC Standards, issued by the International Electro-technical
Commission. f. Relevant British Standards for Electrical Equipment and
Materials.
g.
Relevant British Standards Codes of Practice
(BSCP).
h.
International Commission for Conformity Certification of Electrical
Equipment
(CEE).
i.
Specifications for the Installation of Telephones, issued by the
Ministry of
Communication.
j.
The latest relevant recommendations of the Committee Consultant
International
Telephone and Telegraph (CCITT).
k.
Fire Officer’s Committee (FOC) Rules latest Edition
(British). l.
National Fire Protection Association (NFPA).
m.
Relevant British Standards for Fire
Alarm. n.
Kuwait Fire Department
(KFF).
In the event of conflicting requirements between the authorities cited above or
between authorities cited and those specified, such conflicts will be resolved
by the Company under the terms of the Contract.
E.
Quality of Workmanship
1.
Equipment of any system of the Electrical Work shall be installed in such a
manner that equipment, operating and control devices, etc., are readily accessible
for service and that adequate access spaces are maintained.
2.
Obtain detailed information from the manufacturers of the equipment as to the
proper method of installation and connection of their equipment.
3.
Should any portion of the Works which should reasonably be inferred as
necessary for the complete, safe and satisfactory operation of any system of the
Electrical Work as a whole, be not expressly described or specified, provide and
execute such works as a part of this work at no extra cost to the Company.
F.
Approval by Public Authorities:
1.
Ensure that, where applicable, the work and any materials used in the execution
of the work in accordance with the Contract, comply with the requirements of
the particular Public Authority having jurisdiction (MEW, MOC, KFF, Civil Aviation,
KNPC etc.).
2.
Where necessary to comply with regulations, inform the Public Authority of the
proposed work and obtain from them any written approval that may be required.
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3.
Submit to the Public Authority any materials for testing that the Authority may
require.
Provide the Company with a copy of all correspondence, test certificates,
etc., in connection with the Works.
1.6
DELIVERY, STORAGE AND HANDLING
A.
1.7
During transportation or storage, all equipment and materials must not be subject to
damage even from temperatures ranging from -10ºC to 84ºC, relative humidity from
10% to 95% and high dust content in the atmosphere.
WARRANTY
A.
Manufacturers shall provide their standard warranties for products furnished under
Division26 of the Specification unless Special Project Warranties are required in lieu.
PART 2 - EXECUTION
3.1
TESTING AND COMMISSIONING
A.
On completion of the entire electrical installation work or any separate system or
distinct part thereof, notify the Company, in writing, that the completed part of the
electrical work is ready for inspection. Before doing so, perform initial trial tests, and
correct, adjust, calibrate, balance, regulate, etc., the system concerned as necessary
until the specified and required performance conditions are obtained.
B.
The inspection of the Contract work shall be carried out by the Company in
accordance with the requirements of Section Seven (7) of the IEE ‘Regulations for
Electrical Installations’ 17th Edition and MEW requirements.
C.
The operation tests of various systems shall be as specified separately in each
concerned Section of this Specification. The results and readings obtained shall be equal
or better than the requirements of the IEE and the MEW regulations and these shall be
recorded on forms similar to the ones described in the IEE regulations.
D. Supply all labor, materials, instruments, tools and equipment required for carrying out the
tests.
E.
When the results of the above-mentioned tests prove satisfactory and no errors or
faults are present in the installations, submit the necessary test forms, duly filled, to
the Ministry of Electricity and Water and Ministry of Communications and repeat the
tests in the presence of Ministry Inspectors and obtain approval from MEW & MOC for
the installation.
F.
Follow-up and make all necessary arrangements with the Ministry of Electricity and
Water and the Ministry of Communications for the purpose of providing permanent
electricity supply and telephone service. In addition, provide all facilities and attendance
to Ministry Inspectors for any other tests they may require to be carried out before
energizing the permanent power supply.
G.
After the connection of the permanent power supply, commission all parts of the
electrical installations covered by this Specification and demonstrate to the
Company that the entire electrical installations are in perfect working order.
H.
When equipment or services of a specialized nature are involved, provide the
services of a specialist from the manufacturer who shall be present at the time of testing
and commissioning of their equipment.
Include for all expenses incurred in this
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respect as no claim for additional payment will be entertained.
I.
Submit to the Company test reports, which shall include all records of test procedures,
readings and results obtained.
J.
The Contractor shall allow for early start and maintenance of electrical equipment and
systems prior to the date of the Acceptance Certificate.
K.
Prior to acceptance, inspect, operate and test all electrical equipment, materials
and components, whether such tests are detailed in this specification or not. Tests will be
supervised by the Company, to ensure that the operation of the systems and
components satisfies the requirements of the Contract Documents.
L.
Include any specific testing required by the Authorities, or any other body having
jurisdiction over the installation, and as directed by the Company.
M. Provide all tools, equipment, labor and materials required to perform the electrical
testing.
Provide three (3) copies of the test reports to the Company.
N.
The Company reserves the right to witness factory testing of generator, bus duct and fire
alarm; the total cost to be included in the bid price of this section. Coordinate with
the equipment manufacturers and notify the Company ten (10) days before any
factory testing, to confirm whether he will be present.
O.
Report any deficiencies in test results immediately to the Company.
P.
Testing shall be conducted by fully qualified personnel only. Where required, arrange
for site testing to be carried out by Independent testing consultants specializing in this
type of work for the particular system involved.
Q. Test in accordance with the applicable standards issued by the governing organizations
(e.g.
UL, NFPA, MEW, IEE), and with the recommendations of the manufacturers.
R. Include the cost of all testing in the bid price, whether performed in the field or at the
factory.
Inform the manufacturers of the factory and site testing requirements.
S.
Make test records in a neat and legible manner, fully identifying the equipment or
system being tested, the test results and the date of the test. Submit three (3) copies to
the Company at the end of each test.
T.
Do not energize distribution or control equipment until the test results have been
reviewed and passed by the Company.
U.
Ensure that phasing and phase rotation is the same throughout the system. Ensure
that all devices are wired for the same polarity.
V.
Test the voltage on the last outlet of each circuit. The maximum permissible voltage
drop shall be as per MEW regulations.
W.
Measure the load on each phase at each switchboard, distribution panel, power panel,
lighting panel and receptacle panel. Rearrange the phase connections on each phase
as directed by the Company and recheck the loads.
3.2
BATTERIES
A.
Check battery voltage of each cell in accordance with the manufacturer's instructions.
B.
Charge the battery, discharge at rated load for 1/2 hour, and recheck battery voltage and
specific gravity of each cell. All readings shall be as per manufacturer data sheets of
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the approved product.
3.3
BATTERY CHARGERS
A.
Energize the battery charger and operate until battery full charge is
indicated. B.
Discharge the batteries to the fully discharged condition.
C. Recharge the batteries. Record the DC voltage and current once per hour for eight (8)
hours.
Test the batteries to ensure that they have reached at least 95% of full charge.
D.
Continue to charge to ensure that the charger changes from equalize rate to float rate.
E.
Demonstrate that the automatic timer controls the charging and correctly transfers from
equalize to float charge after the selected period.
F.
Simulate faults to demonstrate that the alarm lights and audible alarms perform as
designed. G.
At the end of the tests, with the batteries in fully charged condition,
operate the charger on
float for a minimum period of twenty- f o u r (24) hours to ensure that a stable
condition is
reached and held.
3.4
A.
FIRE ALARM
Arrange for the manufacturer to make a complete inspection and adjustment of the
system and all components, to ensure that:
1.
The system complies with the Contract Documents, the manufacturer's
recommendations and the applicable codes and standards
2.
The system functions in accordance with the drawings and specifications in
both the supervisory and alarm modes, including testing or operation of all
alarm initiating devices to verify their operation and zoning
B.
During the inspection, provide staff as requested by the manufacturer as well as any
equipment required such as ladders and scaffolding.
C.
Submit the manufacturer's certificate of verification confirming that the inspection
has been completed.
D.
Testing and verification shall be conducted by the Contractor and the manufacturer
of the system.
E.
The verification report form shall be based on the requirement of the Specifications.
F.
Testing shall include all auxiliary functions, such as elevator recall, fan shutoff, and
damper operation. The use of open flame or live smoke will not be permitted.
G.
Submit seven (7) copies of the approval certificate and verification report to the
Company after completion. Insert one (1) copy in the operation and maintenance
manuals.
H. Demonstrate complete system to Kuwait Fire Brigade (KFF) for their approval and
certification.
3.5
EARTHING
A.
Test the earthing system for compliance with code and the requirements of the supply
authority. B.
Notify the supply and inspection authorities so that they may be
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present to witness the
Contractor testing. Provide any assistance they require for their own testing procedures.
3.6
INSULATION
A.
3.7
Check the insulation resistance to ground and phase to phase of all parts of the
electrical installation with a 500 Volt Megger. Test with all panels, switches, socket
outlets and branch circuit wiring installed and connected, but without fluorescent
fixtures connected. Complete insulation tests to the Company's approval before power
is applied to any circuit.
LIGHTING
A.
Verify the correct lamps, position, ballast and operation of all fixtures.
B.
With all lighting in operation, measure the average illuminance on the floor or
tread (by establishing the maximum and minimum levels) in the following locations:
1.
Exits, public corridors, corridors leading to exits, electrical equipment rooms,
elevator machine rooms and Hostway pits.
2.
Offices, storage rooms, service rooms, garages, washrooms and stairways.
3.
Every place of assembly
4.
Rooms and areas as directed by the Company.
C.
With only the emergency lighting in operation, measure the average illumination at exits,
public corridors, floor areas where the public may congregate and other rooms and
areas as directed by the Company.
D.
Take readings at night, with no outside light contribution.
E.
Take readings with a cosine corrected portable digital illuminance meter, or with a
video camcorder with suitable software for illuminance measurements. Measuring
instruments shall be tested, calibrated and certified accurate to within 2%.
F.
Submit technical, testing and calibration data as well as certification on the
photometer. G.
Plot lighting results on a set of reproducible plans for review by the
Company and
submission to the authorities.
3.8
LIGHTNING PROTECTION
A.
Test electrical conductivity across all connections.
B.
Provide a pull test of 900N (200 lbs.) on all mechanical connections.
C.
If chemical additives have been used to decrease the ground resistance, test and
ensure that the maximum resistance to ground of 5 ohms has not been exceeded.
3.9
A.
B.
SWITCHBOARDS AND CIRCUIT BREAKERS
Carry out complete tests including all routine tests as specified in standard
Specifications and following tests in the manufacturer's plant.
The test procedure shall be as follows:
1.
Visual inspection to verify degree of protection creepage and clearance
distances.
2.
All conductors and cables are checked for proper routing and all devices for
proper mounting.
3.
Check effectiveness of all mechanical devices, e.g., handles, locks,
interlocks, operating devices, etc.
4.
Check all screwed, bolted connections for adequate contact - random tests only.
UNITED ENGINEERING AND
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BASIC ELECTRICAL REQUIREMENTS
26 05 10-11
5.
6.
Check panel conformity to drawing and Company's requirements.
Megger Test all main circuits through to final terminals. Insulation resistance
shall exceed 10 mega ohms. Record all measurements.
7.
Flash tests all main circuits at 2.5 KV for one (1) minute. Record leakage current.
8.
Repeat Megger test to verify insulation resistance has not been affected
by the dielectric test.
9.
Functional test of all circuit breakers switches, contactors, etc. and every
circuit to
verify correct operation.
10.
Primary injection tests of all relays, CT's and indicating and metering
instruments.
C.
3.10
Prior to energizing the switchboards, perform the following checks on site:
1.
Operate the equipment through all design functions, including remote
operation, actuation of alarm and indicating devices, mechanical and electrical
tripping and closing and operation of the protective devices.
2.
Insulation resistance measurements on the buses, phase to phase and
phase to
ground, with all breakers in the fully connected position and contacts open.
3.
Control circuit insulation resistance to ground.
4.
Inspect all relays and protective devices, and verify settings in accordance
with the manufacturer's instructions or the information in the Coordination
Study.
5.
Inspect current transformers and relays for correct polarity of connections
and the
installation of jumpers on unused current transformer circuits.
6.
Simulate the operations and check the logic of interlocks.
7.
Manually close and trip each breaker checking and adjusting the main
contact alignment and wiping action in accordance with the
manufacturer's instructions.
8.
Check the phasing on each side of each tie breaker, before closing.
9.
Flash tests all main circuits at 2.5 KV for one (1) minute for 415V
switchboard and record leakage current.
10.
Test protective relay operation for incomer air circuit breakers.
GENERATOR SETS
A. Carry out complete tests in the manufacturer's plant.
B. Carry out tests with a controllable and adjustable load bank, capable of providing a
steady load, free from fluctuations, at 1.0 power factor.
C.
The test procedure shall be as follows:
1.
Start the set. Adjust the voltage and frequency to the rated values and
apply the load.
2.
Maintain full load on the set until the coolant temperature stabilizes, and in any
case for a period of not less than six (6) hours, in an ambient temperature of 50
deg C.
3.
Read and record the following data at the beginning of the test and each half
hour thereafter:
a.
Frequency or speed
b.
Voltage and current in all phases
c.
Load
d.
Coolant
temperature
e.
Ambient temperature at engine block level
f.
Lubricating oil temperature
g.
Lubricating oil
pressure h. Fuel
consumption.
4.
Do not adjust voltage or frequency during the test. Adjust the load bank as
required
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BASIC ELECTRICAL REQUIREMENTS
26 05 10-12
to maintain full load on the
set.
5.
At the end of the run, increase the load to 110% of rated power for one (1) hour,
and take the above readings every fifteen (15) minutes.
6.
Apply full three phase load at unity power factor to the set. The voltage drop
shall not
exceed 12%, and the unit shall return to stable operation within three (3)
seconds, with the terminal voltage within the limit for steady state voltage
regulation and remaining constant within plus or minus 1%.
7.
Demonstrate high coolant temperature shutdown by blocking the air circulation
through
the
radiator.
8.
Demonstrate low oil pressure shutdown by closing a valve in the lubricating oil
line to the pressure switch, without interfering with engine lubrication.
9.
Demonstrate overspeed shutdown by operating the overspeed contacts.
10.
Perform a mechanical inspection of the set.
11.
Install strip chart recorder to record frequency and voltage variations during
load switching procedures. Delay each load change until unit has reached
steady state condition. Load switching is to be as follows:
a.
No load to full
load
b.
No load to 20%
load c.
No load to
50% load d.
No load
to 75% load
e.
20% load to 50%
load f. 50% load to 75%
load
12.
After complete unit is installed on site, this Contractor shall arrange and pay to
repeat the same test as conducted at the factory.
13.
In addition, demonstrate the following to the Company:
a.
Startup, transfer of load to generator set, retransfer to normal source
and shutdown on automatic control.
b.
Startup and shutdown on Manual
control.
c.
Startup and shutdown on Test
control.
d.
Startup and shutdown on Engine Start
control.
e.
Correct operation on timing devices and safety shutdown
devices.
14.
The site test shall be conducted in the presence of the Company and
Company
representative.
15.
Contractor shall pay all fuel costs related to the tests.
3.11
A.
INFRA-RED SURVEY
Do two thermographic surveys, one (1) prior to the date of the Acceptance
Certificate and one (1) just prior to the issue of Defects Rectification Certificate.
B.
Survey switchgear, panels, transformers, motor controls and all accessible items of
distribution equipment using an infrared imaging system to detect all locations
which could lead to equipment failure or the initiation of a fire.
C.
Report details of all problem locations, with comments as to the probable
cause and recommendations for corrective action.
3.12
UNINTERRUPTABLE POWER SYSTEMS
UNITED ENGINEERING AND
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BASIC ELECTRICAL REQUIREMENTS
26 05 10-13
A.
Perform the following factory tests:
1.
Prepared blank forms and check sheet with spaces for recording data. Mark
check
sheet and record test data on forms in duplicate as the test proceeds. Attach all
meter recordings and provide the test engineer's signature on the forms to
indicate
concurrence in the results reports. A duplicate must be given to the Company
at the completion of factory tests.
2.
rated
3.
4.
5.
6.
Provide a load bank for testing which is adjustable up to 150% of the system's
output at unity power factor. The load on each phase shall be adjustable from 0 to
100%
so that unbalanced output may be tested for 3 phase systems.
The test procedure shall include:
Visual inspection to determine materials, workmanship, conformance with the
design requirements.
a.
Overcurrent on U.P.S.
b.
Overvoltage and undervoltage on UPS
output. c.
Automatic bypass switch operation.
d.
Maintenance bypass switch operation.
e.
Demonstrate system start-up and
shutdown. f. Demonstrate adjustable settings.
g.
Demonstrate and record the unit total harmonic distortion (THD).
h.
Demonstrate accuracy of meters mounted on unit and at remote
status panel.
i.
Record transient response under full load.
j.
Voltage and frequency variation for composite UPS system
synchronized with bypass stream under 0-100% load variation and
power factor varying under guaranteed P.F. variation range.
k.
Capability of clearing fault by largest outgoing feeder protective device,
without blowing the incoming UPS fuses (semi-conductor fuses).
l.
Battery capacity adequacy check by loading it to the rated load and
rated duration and then measurement of end of discharge cell voltage.
Submit factory test result to the Company for approval prior to shipment.
The factory test shall be conducted by a manufacturer's engineer, which
shall sign the report, and verify the test procedures as described above have
been satisfactorily completed.
Perform the following site tests:
a.
System efficiency with a fully charged battery at 25%, 50% and 100%
of specified full load at unity power factor, together with heat losses in kW
at these loads and at no load.
b.
Transient response.
c.
Load transfer to bypass.
d.
Load transfer from bypass
e.
Load transfer to and from maintenance
bypass. f.
System step response.
g.
Factory service engineer to perform on site start-up of system,
checking, adjusting and testing.
h.
The manufacturer shall also include for a one (1) day period of
instruction for a group of four (4) personnel on theory operation and
maintenance of system after installation.
i.
The one (1) day training session shall take place on site.
j.
Repeat site test with the system operating on the emergency generator.
The
Contractor shall include the diesel cost encountered during such
test.
END OF SECTION
UNITED ENGINEERING AND
TECHNICAL CONSULTANTS
(UNETEC)
BASIC ELECTRICAL REQUIREMENTS
26 05 10-14