Enquiry for DG set, PRO: PROPOSED G+1P+9 STOREY RESIDENTIAL BUILDING
Category
GENERATOR
Requirements
Supply & Installation of 400 KVA Generator
Quote your most competitive price for the mentioned item based on the attached details and please send the quotation as early as possible.
SUBMISSION DATE : 05.05.2023
SUMMARY
A. This Section includes emergency power plant installation comprising the following:
1. Diesel generating set, with associated auxiliaries, exhaust system, start-up system,
cooling system, fuel system, batteries and charger etc.
2. Fuel storage and transfer system
3. Instrumentation, protection and control equipment
4. Manually operated overhead hoist
5. Inter-plant cabling and wiring
6. Earthing.
7. Connection to BMS system, including interface elements such as relays, transducers,
etc. as detailed in Division 23 Specification Sections BMS schedules and /or shown
on the Drawings.
B. Related Sections include the following:
1. Division 26 Section "Basic Electrical Materials and Methods"
2. Division 26 Section "Transfer Switches" for transfer switches, including sensors and
relays to initiate automatic-starting and -stopping signals for engine generator sets.
3. Division 26 Section "Low Voltage Electrical Power Conductors and Cables"
4. Division 26 section "Grounding and Bonding"
1.3 SUBMITTALS
A. Product Data: Submit full technical data of equipment for approval including, but not limited
to, the following:
1. General description and characteristics of engine- generating sets, standards with
which components comply, site rating and overload capability, overall efficiency, and
fuel and lubricant consumption at 100%, 75%, 50% and 25% of rated load.
2. Description and operating criteria of engine; type, model, manufacturer, fuel and
lubricating oil types and specific consumption, starting conditions and starting periods
from cold to full-load pick-up, governor and response characteristics due to sudden
load changes, super-charger, fuel injection system, cooling system and radiator, air
filters, fuel filters, oil filters and pumps.
3. Description and operating criteria of generator, exciter and voltage regulator, with
loading response and short-circuit characteristics, insulation, cooling and
accessories.
4. Dimensioned outline plan and elevation drawings of engine generator set and other
components specified, weights and forces, mounting methods, vibration protection
etc.
5. Battery type, make, charge/discharge characteristics, capacity and constructional
features.
6. Battery charger, method of charging, equalizing and trickle charging.
7. Daily fuel tanks, pipes and accessories; materials and construction.
8. Exhaust system and silencers; materials and construction.
9. Control instruments, protection, alarms, cut-outs, indicating lamps, indicating
instruments and all other devices or components.
10. Time-current characteristic curves for generator protective device.
11. Calculation of noise levels in dBA at typical points within engine room and at various
locations inside and outside.
12. Calculation of static pressure on radiator fan including indication of Manufacturer’s
required C.F.M. and fan static pressure.
B. Shop and Construction Drawings: Submit drawings for approval including, but not limited to,
the following:
1. Certified manufacturers' dimensional drawings, templates and installation instructions
for equipment and accessories, showing weights and distribution of forces, location
and size of cabling (power and control), piping connections to equipment, and other
pertinent data.
2. Plans and elevations of all equipment.
3. Separate unit wiring diagrams, schematics and interconnecting wiring diagrams.
4. Constructional details of daily service fuel tank, including outline drawings showing
piping arrangements, connections and dimensions.
5. Complete execution drawings of associated auxiliaries.
6. Overall Single Line Diagram of the plant, indicating ratings of different equipment and
metering & protection devices.
C. Manufacturer Seismic Qualification Certification: Submit certification that day tank, engine-
generator set, batteries, battery racks, accessories, and components will withstand seismic
forces defined in Section 260548 "Vibration and Seismic Controls for Electrical Systems."
Include the following:
1. Basis for Certification: Indicate whether withstand certification is based on actual test
of assembled components or on calculation.
a. The term "withstand" means "the unit will remain in place without separation of
any parts from the device when subjected to the seismic forces specified."
b. The term "withstand" means "the unit will remain in place without separation of
any parts from the device when subjected to the seismic forces specified and
the unit will be fully operational after the seismic event."
2. Dimensioned Outline Drawings of Equipment Unit: Identify center of gravity and
locate and describe mounting and anchorage provisions.
3. Detailed description of equipment anchorage devices on which the certification is
based and their installation requirements.
D. Point-wise compliance statement to the specifications, duly signed by the manufacturer /
manufacturer’s authorized representative and the contractor.
E. Qualification Data: For firms and persons specified in "Quality Assurance" Article.
F. Routine Tests and Factory Test Reports: Fully assembled plant or equipment shall be tested
at the factory, before shipping. Complete performance tests shall be carried out under site
simulated conditions, in accordance with the Standards and as described in the
Specification, showing evidence of compliance with specified requirements.
G. Field Test and Observation Reports: Indicate and interpret test results and inspection
records relative to compliance with performance requirements.
H. Certified Summary of Performance Tests: Demonstrate compliance with specified
requirement to meet performance criteria for sensitive loads.
I. Sound measurement test report.
J. Field test report of tests specified in Part 3.
K. Maintenance Data: For each packaged engine generator and accessories to include in
maintenance manuals specified in Division 1. Include the following:
1. List of tools and replacement items recommended to be stored at the Project for
ready access. Include part and drawing numbers, current unit prices, and source of
supply.
2. Detail operating instructions for both normal and abnormal conditions.
1.4 QUALITY ASSURANCE
A. Design, manufacture, testing and method of installation of all apparatus and materials
furnished under requirement of these specifications shall conform to latest publications or
standard rules of the following:
1. Department of Civil Defence requirements
2. British Standards.
B. Local Representative: Provide evidence that proposed equipment manufacturer has a
locally established and authorized organization which can be called upon for professional
advice and maintenance as may be required, and which can immediately supply spare parts
to support day to day and emergency maintenance requirements. Failure to satisfy
Engineer may disqualify a manufacturer.
C. Standards: Equipment and component parts shall comply with ISO 3046, ISO 8528, IEC
60034, IEC 60085 and CISPR, or equivalent NEMA, ANSI, IEEE and DIN Standards and
recommendations of ABGSM (Association of British Set Manufacturers) where such
standards meet with or supersede the ISO and IEC Standards.
D. Comply with NFPA 99.
E. Comply with NFPA 110 requirements for Level 1 emergency power supply system.
F. Comply with NFPA 110 requirements for Level 2 emergency power supply system.
1.5 DELIVERY, STORAGE, AND HANDLING
A. Deliver engine generator set and system components to their final locations in protective
wrappings, containers, and other protection that will exclude dirt and moisture and prevent
damage from construction operations. Remove protection only after equipment is safe from
such hazards.
1.6 MAINTENANCE SERVICE
A. Initial Maintenance Service: Beginning at Substantial Completion, provide 12 months' full
maintenance service by skilled, competent employees of the generator Installer. Include
monthly preventive maintenance, repair or replacement of worn or defective components,
lubrication, cleaning, and adjusting as required for proper generator operation at rated
speed and capacity. Use parts and supplies as used in the manufacture and installation of
original equipment.
1. Perform maintenance, including emergency callback service, during normal working
hours.
2. Include 24-hour-per-day, 7-day-per-week emergency callback service.
a. Response Time: 2 hours or less.
1.7 EXTRA MATERIALS
A. Spare Parts: Provide manufacturer's recommended spare parts for 1000 hours operation of
the plant. Provide list of manufacturer's spare parts for 2000 hours operation together with
current prices. Pack with protective covering for storage and identify with labels describing
contents.
B. Tools and Instruments: Provide tools and instruments required for normal routine inspection,
testing, operation and general maintenance, as recommended by the manufacturer.
1.8 WARRANTY
A. Manufacturer’s Warranty: Submit a written warranty signed by the manufacturer agreeing to
repair, restore or replace any defective equipment specified in this section during the
specified warranty period
1. Warranty Period: Refer to Appendix A – Warranty Schedule.
PART 2 - PRODUCTS
2.1 PLANT DESCRIPTION
A. Generator Set Assembly: Compact package type, with all equipment mounted on one rigid
steel bed frame suitable for skidding. Radiator shall be mounted on the set or remotely as
shown on the Drawings. Design shall permit easy operation, maintenance and repair.
B. Vibration reduction shall be achieved by appropriate design and careful balancing at factory.
Compact set shall have approved anti-vibration isolators of steel spring or resilient neoprene
between rotating equipment and bed-frame, limiting transmission of vibration to building to a
maximum of 0.04 mm amplitude throughout the operating vibration frequency range.
C. Noise reduction shall be achieved by approved methods at source of noise, including all
necessary acoustic louvers, inlet and outlet air attenuators, residential exhaust silencer(s),
acoustic treatment of the room walls, floors, doors and ceiling, etc. with sound level
measured at 1 m in any direction outside the room limited to 65 dBA in accordance with ISO
standards for residential areas. Generator supplier to coordinate with the main contractor for
the required installations.
D. Sand trap louvers: generator room louvers shall be of approved sand trap type if required on
the drawings or recommended by the Manufacturer. Contractor to coordinate with the
building works for the required installations.
E. Cold Starting: Engine shall be fully equipped to start and pick up initial load specified at
specified minimum ambient temperature. Provide coolant heater.
1. Cold starting aids, such as engine jacket water heater, lubricating oil heater, intake-air
heater, battery and all devices, accessories, connections, thermostatic switches and
off-duty disconnects with pilot lights and necessary protection, shall be supplemented
as recommended by the manufacturer and approved.
F. Equipment ratings shall be as shown on the Drawings or the next higher standard ratings
provided by the manufacturer. Ratings shall be net Standby, limited time running power,
excluding fan and any auxiliaries, auxiliary drives and losses, delivered at specified
frequency, voltage and power factor and under worst climatic conditions on site.
2.2 DIESEL GENERATOR SET
A. Components: Set shall basically consist of diesel engine, brushless synchronous generator
with direct flexible coupling to engine and single or parallel control cubicle as required and
shown on the Drawings.
B. Governing shall conform with ISO 3046-4, electronic type governor with limits of speed
control as specified below.
C. Starting and Stopping: When in the automatic mode the set shall start and stop
automatically by a signal sensed through an auxiliary contact in the load transfer switchgear.
The set shall stop, after an adjustable cool- down period (2 - 30 minutes).
A. Duty: Plant shall reach full speed within 10 seconds from start impulse and accept
immediately 60 % of net rated output (load being mixed, steady and inductive, with motor
starting loads as shown on the Drawings). Transient voltage variation shall not exceed 10
% under any step-load application for which the system is intended, up to full rated load,
recovering to within +/-2% within a few cycles. For parallel synchronized generators, life
safety / life support loads shall be energized once the first generator starts within 10
seconds total time from receiving the impulse start signal without waiting for the other
generators to synchronize and connect to bus.
B. Failure to Start: Should engine fail to start following a start impulse, the system shall come
to rest for a few seconds. Two further starting attempts shall be automatically made with intermediate 20-second maximum periods of rest. Should the set fail to start after three
attempts, an alarm shall sound and a 'start failure' signal illuminate.
C. Hand operation shall be possible for testing or normal operation through a
test/manual/off/auto selector switch.
D. Regular Exercising: While on 'auto', the set shall start regularly and automatically every
week and shall operate for 30 minutes before stopping.
Posted on
02 May 2023 11 months ago
Buyer Details (Be An Elite Member To View Buyer Details)
Company Name
Al *******************
Address
Dubai United Arab Emirates