PACKAGED ENGINE GENERATORSjobs.undp.org.lb/stores/profiles/vacatt/224.pdfaccordance with ISO3046. Continuous ambients shown indicate ambient temperature at 100% load which results

UNITED NATIONS DEVELOPMENT PROGRAMME OFFICES BEIRUT Arab African Bank Building Plot 1443 - Marfa’ B Sector G – Solidere Beirut, Lebanon

PACKAGED ENGINE GENERATORS Wednesday, November 21, 2007 Prepared by:

UNITED NATIONS DEVELOPMENT PROGRAMME OFFICES BEIRUT Arab African Bank Building Plot 1443 - Marfa’ B Sector G – Solidere Beirut, Lebanon

1. SPECIFICATIONS 2. BILL OF QUANTITIES PACKAGED ENGINE GENERATORS Wednesday, November 21, 2007

UNITED NATIONS DEVELOPMENT PROGRAMME OFFICES BEIRUT

1. SPECIFICATIONS

UNITED NATIONS DEVELOPMENT PROGRAMME GENERAL SPECIFICATIONS OFFICES BEIRUT - BCD Beirut, Lebanon

IDEPCONSULT Division 16 – ELECTRICAL November 21, 2007 page 1/24 Section 16231 - Packaged Engine Generators

SECTION 16231 - PACKAGED ENGINE GENERATORS 1 - GENERAL 1.01 RELATED DOCUMENTS A. Drawings and general provisions of the Contract, including General and

Supplementary Conditions, apply to this Section. 1.02 SUMMARY A. This Section includes packaged diesel-engine generator sets with the following

features and accessories: 1. Two Diesel Generator Sets having an output power of 250 KVA (existing) and

150KVA (new). 2. One switchboard for the control and protection of the new generator. 3. Paralleling & automatic synchronizing system. 4. One daily reservoir for the new Diesel engine with the corresponding manual and

automatic filling equipment. 5. The sound attenuation system (canopy). 6. The exhaust system. 7. The spare parts. 8. The tools and instruction manuals. 9. The foundations of the generator set.

10. Starting battery. B. Concept of the supply:

The emergency power shall be supplied by means of two Diesel Driven Generator Sets, feeding the essential circuits, working in a total synchronizing system (refer to paragraph 2.07) installed in the roof of the building (if possible). The Diesel Generator Sets shall start automatically to replace the normal power supply within a maximum period of ten (10) seconds. This starting shall take place in case of failure of the normal power supply.

It is considered a failure in the power supply whenever:

a- The voltage disappears on the incoming bars for any of the three (3) phases. b- The voltage of the incoming supply drops below the acceptable nominal voltage

(this should be preset between seventy and ninety-five percent (70% and 95%) of the nominal voltage).

In order to ensure the stabilization of the normal supply before the emergency unit is put out of service, the emergency Diesel Generator Set shall be equipped with time lag relays to prevent its stopping on momentary return of the normal supply.

GENERAL SPECIFICATIONS UNITED NATIONS DEVELOPMENT PROGRAMME OFFICES BEIRUT - BCD Beirut, Lebanon

Division 16 - ELECTRICAL IDEPCONSULT Section 16231 - Packaged Engine Generators page 2/24 November 21, 2007

Upon return of the normal supply, the following sequence should be fulfilled: a- The load shall be transferred back with a time delay adjustable up to one (1)

minute. b- The Diesel engines shall continue to run on no load and shall shut down after a

delay of two to five (2 to 5) minutes. Loads should be shed to suit the generator supply capacity without affecting the stand-alone supply to life safety loads. If one generator was to go out of service, then it is assumed that loads will be ‘shed’ as necessary. When the generator installation is ready to receive load, it is necessary to introduce loads onto the supply in small steps. This involves the closure of circuit breakers, or the switching of change-over contactors at specified time sequences. Priorities are assigned to key items, and delays are specified in seconds between the prioritized load introductions.

C. General Criteria of the Diesel Generator Set:

The new Generator set shall be complete in every respect with all the accessories, tank and switchboard. The new Diesel engine and the generator shall be fixed on a common metallic bedplate and joined by a flexible coupling. It shall be designed for tropical conditions and an ambient temperature of about forty five (45)°C. The nominal output power of the unit shall be at least 150KVA prime rating, at the climatic conditions of the site, and a power factor of (0.80). The Contractor shall specify the exact power output of the Generator set. The Diesel Generator set shall be of a known make and of the latest model produced by the manufacturer. The switchboard shall be supplied by the factory supplying the Diesel Generator set. The material supplied shall conform with the latest specifications and regulations applied in the country of origin. The Contractor, through the manufacturer, shall provide fully detailed "Shop Drawings" showing the complete installation and shall provide fully detailed maintenance instruction manuals.



1.03 DEFINITIONS A. Standby: Output available with varying load for the duration of the interruption of the

normal source power. Standby power in accordance with ISO3046/1, AS2789, DIN6271, and BS5514 (not applicable in Lebanon).

B. Prime: Output available with varying load for an unlimited time. Prime power in

accordance with ISO8258. 10% overload power in accordance with ISO3046/1, AS2789, DIN6271, and BS5514 (not applicable in Lebanon).

C. Continuous: Output available with non-varying load for an unlimited time. Average

power output is 70-100% of the continuous power rating. Typical peak demand is 100% of continuous rated ekW for 100% of operating hours. Continuous power in accordance with ISO3046. Continuous ambients shown indicate ambient temperature at 100% load which results in a coolant top tank temperature below the alarm temperature (not applicable in Lebanon).

1.04 SUBMITTALS A. Product Data: Include data on features, components, ratings, and performance.

Include the following: 1. Dimensioned outline plan and elevation drawings of engine generator set and other

components specified. 2. Thermal damage curve for generator. 3. Time-current characteristic curves for generator protective device.

B. Shop Drawings: Indicate fabrication details, dimensions, weights, loads, required

clearances, method of field assembly, components, and location and size of each field connection. 1. Design Calculations: Signed and sealed by a qualified professional engineer.

Calculate requirements for selecting vibration isolators and seismic restraints and for designing vibration isolation bases.

2. Vibration Isolation Base Details: Signed and sealed by a qualified professional

engineer. Detail fabrication, including anchorage and attachments to structure and to supported equipment. Include base weights.

3. Wiring Diagrams: Detail wiring for power and control connections and differentiate

between factory-installed and field-installed wiring. C. Qualification Data: For firms and persons specified in "Quality Assurance" Article. D. Field Test and Observation Reports: Indicate and interpret test results and inspection

records relative to compliance with performance requirements. E. Certified summary of prototype-unit test report.



F. Certified Test Reports: For components and accessories that are equivalent, but not

identical, to those tested on prototype unit. G. Certified Summary of Performance Tests: Demonstrate compliance with specified

requirement to meet performance criteria for sensitive loads. H. Factory Test Reports: For units to be shipped for this Project, showing evidence of

compliance with specified requirements. I. Exhaust Emissions Test Report: To show compliance with applicable regulations. J. Sound measurement test report. K. Field test report of tests. L. Maintenance Data: For the packaged engine generator and accessories to include in

maintenance manuals specified in Division 1, the data submitted shall be 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. 1.05 QUALITY ASSURANCE A. Manufacturer Qualifications: Maintain a service center capable of emergency

maintenance and repairs at the Project with eight hours' maximum response time. B. Testing Agency Qualifications: Testing agency or a member company of the

International Electrical Testing Association and that is acceptable to authorities having jurisdiction.

C. Source Limitations: Obtain packaged engine generator and auxiliary components

specified in this Section through one source from a single manufacturer. D. Electrical Components, Devices, and Accessories: Listed and labeled as defined in BSS

Code, by a testing agency acceptable to authorities having jurisdiction. E. Comply with BSS and IEE regulations. F. Engine Exhaust Emissions: Comply with applicable state and local government

requirements. 1.06 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.

1.07 WARRANTY A. General Warranty: Special warranty specified in this Article shall not deprive Owner of

other rights Owner may have under other provisions of the Contract Documents and shall be in addition to, and run concurrent with, other warranties made by Contractor under requirements of the Contract Documents.

B. Special Warranty: Written warranty, executed by manufacturer agreeing to repair or

replace packaged engine generator and auxiliary components that fail in materials or workmanship within specified warranty period.

1. Warranty Period: Two years from date of Substantial Completion.

1.08 MAINTENANCE SERVICE A. Maintenance: At Substantial Completion, begin 12 months' full maintenance by skilled

employees of the manufacturer's designated service organization. Include quarterly exercising to check for proper, starting, load transfer, and running under load. Include routine preventive maintenance as recommended by manufacturer and adjusting as required for proper operation. Maintenance agreements shall include parts and supplies as used in the manufacture and installation of original equipment.

2 - PRODUCTS 2.01 MANUFACTURERS A. Available Manufacturers: Subject to compliance with requirements, manufacturers

offering products that may be incorporated into the Work include, but are not limited to, the following:

B. Manufacturers: Subject to compliance with requirements, provide products from the

following or approved equal:

1. CATERPILLAR (USA) 2. MAN (Germany) 3. DEUTZ (Germany) 1. KATOLIGHT (USA) 2. CUMMINS (UK)



2.02 ENGINE GENERATOR SET The Diesel engine shall have the following characteristics:

A. It shall be a multicylinder, well balanced, four (4) cycle Diesel engine (BS 5514, Part 4).

The effective power on the axle must be enough for a nominal power of 150KVA at the generator outlet with a capacity for ten percent (10%) overload for one (1) hour every twelve (12) hours without excessive heating (BS 5000, Part 99).

The engine shall be suitable for a fuel gas oil having a calorific value of ten thousand (10.000) kcal/kg and complying with BS 2869 or DIN 51601.

B. The running speed of the Diesel shall be fifteen hundred (1.500) RPM. An electronic type governor shall be provided integral with the engine body, with

speed control level preset to correct speed; with accessible screw adjustment to allow slight variations of the setting.

The governor shall regulate the engine speed within five percent (5%) of the nominal speed between no load and full load. A suitable flywheel shall be provided to eliminate generator voltage flickering (BS 5514, Part 6) - (ISO 3046/6).

C. The coupling of the engine and the generator shall be done directly, by means of a

flexible coupling. D. The cooling of the Diesel engine shall be done by water circulation through a radiator

of ample capacity. The engine cooling shall comprise a heating system up to a temperature of fifty (50)°C

to keep the engine ready at any moment to take over the load. This system shall be put out of service by means of a means of a switch on the

control-board of the engine. This heating system shall be equipped with an optic and acoustic alarm functioning

whenever the water temperature is below the prefixed temperature. The radiator shall be equipped with taps for water evacuation connected to the

drainage system of the building. E. The Diesel engine shall be provided with all the lubrication equipment complete with

oil cooling system. The lubrication of the engine shall be done under pressure and should not necessitate

any outside intervention before starting of the motor. F. Filters shall be supplied for oil and fuel with intake system designed to work efficiently

in the ambient conditions. Fuel and oil filters shall have renewable fabric elements and the air cleaner shall be an

oil-bath type. G. Engine bearings shall be sufficiently protected against dust and humidity in a way not

to hinder their proper functioning, and heat shall not exceed the permissible degree. H. The Diesel engine shall be equipped with all the control and measuring instruments

necessary for normal and safe running, and specially the main following items: - One thermometer for the cooling water at the exit of the cylinders. - One thermometer for oil temperature. - One thermometer for the exhaust gases. - One oil pressure gauge.



- One speedometer indicating the number of rotations. - One push button for the starting of the motor. - One switch for preheating. - One switch for manual operation. - One jacket water heater. These instruments could eventually be grouped on a single board to facilitate the control.

I. Automatic emergency supply equipment shall be provided for the engine and shall

have optical and acoustic alarm signals and shall ensure the automatic stopping or the non-starting of the engine in the following cases: 1- High cooling water temperature. 2- Low oil pressure. 3- Over speeding.

The optical signal shall permit the recognition of the origin of the defect. A delay action element shall be provided to avoid unjustified functioning of the emergency stop during the engine starting.

The emergency stop equipment shall be locked. Unlocking shall only be manual. J. The Diesel engine shall be electrically started. The starting shall be automatically

controlled. Manual control shall be also supplied on the switchboard. Starting equipment shall include:

- One lead acid battery having a sufficient capacity for numerous startings per day. - One battery charger with a rectifier and a selector switch for normal and high rate

charging. - One ammeter for charging current. - One voltmeter for the battery terminal voltage.

K. The exhaust gas of the engine shall be evacuated directly outside the canopy through

an appropriate exhaust system including the main following items: - Flexible connections at the exit of the engine with proper couplings to the fixed

tubes. - One appropriate silencer with supports fixed to the wall. - Rigid piping with necessary fixing, clamps and other connection fittings.

The silencer shall reduce the exhaust noise to an acceptable level for the area. The

accessible parts of exhaust manifold, exhaust line muffler and exhaust stack shall have an over layer of insulated material securely bound in place.

2.03 FUEL SUPPLY OF THE ENGINE A. Main Fuel Tank

The main fuel tank of the project shall provide all the fuel needed by the generator sets complying with the requirements of BS 799, Part 5.



The main fuel will be pumped to the daily fuel tank. B. Daily Reservoir

The daily reservoir and its accessories installed near the generator shall form a complete unit not necessitating any installation apart from fixing its supports and connecting the pipes to the engine and to the main fuel tank. It shall have a capacity not exceeding 500 liters. It shall contain the main following items: - One level indicator (High & Low). - One supply tap. - One draining cock. - One connection for filling. - One fitting for overflow in the upper part connected back to the main fuel tank.

C. Filling Motor-Pump Unit

This unit shall be composed of one block. It shall permit the automatic filling of the daily reservoir and shall be controlled by means of a float switch. The discharge of the unit shall be approximately one (1)m3 per hour at a manometric head of five (5) meters. The openings for suction and discharge shall have appropriate dimensions. The power absorbed by this unit shall be as low as possible.

D. Manual Filling

In case of failure of the motor-pump-unit, it should be possible to fill the daily reservoir manually by means of a semi-rotative pump. The discharge of this pump shall be equal to the automatic functioning.

2.04 ALTERNATOR

The alternator shall be a 3-phase, Y-connected generator with the neutral brought-out. It shall be directly coupled to the Diesel Engine. The power output shall be 150KVA at fifteen hundred (1.500) RPM and fifty (50) cycles per second and (0.80) p.f.

The voltage under full load shall be: - Three hundred eighty (380)V between phases. - Two hundred twenty (220)V between each phase and neutral. The alternator shall be suitable for unbalanced loads. The insulation protection and ventilation of the generator shall be designed for tropical conditions. The generator shall be self-regulating and self-exciting.



The voltage regulation shall be within plus or minus two percent (±2%) of the nominal voltage at all rated loads and power factors. Moreover, the alternator shall be capable of withstanding ten (10%) percent overload for one (1) hour every twelve (12) hours without excessive heating.

2.05 SWITCHBOARD

The switchboard of the emergency Diesel Generator set shall be of a standard size, floor mounted, sheet steel cabinet prefabricated and supplied by the supplier of the Diesel Generator set. Each switchboard shall include all the accessories, connections, control, protection and measuring instruments. It shall comply with EN 60529 standard. Paint finishes shall be in full gloss stove enamel to BS 4800 colors.

The following items represent the main parts of the equipment without limitation to all other necessary equipment for the alternator: - One set of bus bars. - Terminal boxes for the cables. - Thermal and magnetic elements for generator protection against overload and

short circuit. - Indicating lamps. - Three digital ammeters with their corresponding current transformers. - One digital voltmeter graduated zero to five hundred (0 to 500) V. with a selector

switch. - One digital kilowatt meter. - One digital frequency meter graduated forty seven to fifty three (47 to 53) cycles

per second. - One digital meter for total number of running hours. - One protection relay against shock of inverse power feedback. - All the necessary circuit breakers and fuses in accordance with BS 88. - All indicating meters shall be industrial grade performance to BS 89 / IEC 51.

The Contractor shall install all the equipment and apparatus necessary for a satisfactory running and maintenance of the group. The connections between the switchboards of the Diesel Generator Set and the generator shall be executed by multicore PVC insulated non-armored cables, similar to those used for the electrical installation. The power cables shall be four (4) core and the control cables shall have a number of conductors sufficient for the needs of all the control and signaling circuits.

2.06 FOUNDATIONS



The Diesel Generator Set shall be installed on an isolated concrete foundation on the roof (if possible). The elastic suspension of the set shall be ensured by vibration dampers installed beneath the metallic bedframe. The Contractor shall submit to the Architect Engineer, for approval, detailed drawing of the concrete foundation with the materials used against the vibration.

2.07 PARALLELING & AUTOMATIC SYNCHRONIZING SYSTEM A. Notice

Work described hereunder shall apply to the supply and installation of the following listed, but not limited items:

1. Automatic synchronizer 2. Multiple circuit interlock 3. Control circuit status indicators 4. Priority load control 5. Load shed control switch 6. Automatic operators

B. The Contractor shall acquaint himself fully with the building structure to become

thoroughly familiar with the space available for generator control and paralleling/synchronizing equipment, the work and working conditions and verify all dimensions in the field and shall advise the Engineer of any discrepancy before performing any work.

C. The space required by the equipment to be provided shall be compatible with space

available. D. The Contractor shall be specifically responsible for the coordination and proper relation

of the work to the building structure and to the work of other Contractors. 1. Automatic Synchronizer

An automatic solid state active synchronizer shall be provided to synchronize its respective incoming engine generator set with the paralleling bus. The synchronizer shall include a differential voltage detector, differential frequency detector, differential phase detector, raise/lower voltage output relays for generator voltage control, raise/lower frequency and phase angle control through a proportional DC output voltage, and a circuit breaker closing relay. The differential voltage detector shall compare the voltage of the incoming generator to the paralleling bus. If the voltage is not within the factory set difference of ±5 (adjustable from 0 to 10%), the voltage detector shall lockout the circuit breaker closing relay and



simultaneously initiates adjustment of the voltage through the raise/lower voltage output relays. When the incoming generator voltage is within the preset acceptable limit, the lockout shall be removed. Repetitive accuracy of the voltage detector shall be ±1.0V over the specified temperature range. The differential frequency detector shall compare the frequency of the incoming engine generator set to the paralleling bus. If the frequency is not within the preset acceptable difference of ±0.2Hz (adjustable from 0 to ±0.5Hz), the frequency detector shall lockout the circuit breaker closing relay and simultaneously generates a DC voltage proportional to the frequency difference to cause the engine governor to bring the frequency within the preset acceptable limit. When the incoming engine generator frequency is within the acceptable limit, the lockout shall be removed. When the voltage and frequency limits are satisfied and the relative phase angle between the incoming unit and the bus reduces to 5 degrees to initiate breaker closing and paralleling, DC control of the governor and voltage control shall be terminated simultaneously with breaker closure. The complete system shall function in such a manner as to ensure that the maximum relative phase angle at the instant of paralleling does not exceed five (5) electrical degrees.

2. Multiple Circuit Interlock

A solid state discriminator circuit shall be provided for first-up, first-on operation of the generator set. This device shall positively prevent more than one set from being simultaneously connected to a dead bus. Upon initiation of the connection of the first set to the bus, this circuit shall shift the control of the remaining sets to automatic or manual synchronizing at the operator’s discretion.

3. Control Circuit Status Indicators Color-coded, light-emitting diodes shall be provided on the generator control panel to indicate the control circuit status of the following conditions: Control power fuse blown Red color Generator voltage and frequency acceptable Green color Voltage activated Red color Breaker closing initiated Amber color Engine start signal received Green color Engine start signal fuse blown Red color

4. Engine Cool Down and Failure to Synchronize Time Delay Relays



Plug in, solid state time delays shall be provided for unloaded cool down, adjustable from 0 to 15 minutes (factory set at 5 minutes) and for failure to synchronize, adjustable from 0 to 120 seconds (factory set at 30 seconds). The cool down time delay shall be automatically bypassed for malfunction and manual shutdown of the engine generator set. The failure to synchronize time delay shall provide audible and visual indication but shall not terminate synchronizing attempts nor shut down the engine.

5. Engine Start/Stop Operation

The automatic engine control shall initiate operation of the engine upon receipt of a signal from a contact, which closes for engine run, and opens for engine stop. Upon start of the engine, the engine control shall automatically disconnect the starting motor and prevent its reconnection until the engine has come to a complete rest. If the engine fails to start after four adjustable cranking attempts (factory set at 10 seconds on, 10 seconds off, adjustable from 5 to 30 seconds) or if any protective device should operate while the engine is running, the engine shall be disconnected from service and immediately be stopped. The engine controls shall lock the failed set out of service and require a manual reset. The engine control shall include provisions for conversion to single cycle cranking adjustable from 35 to 210 seconds.

6. Four Position Engine Control Switch Operation

Off/Reset

In this position, the engine shall not be capable of starting and/or running. If the engine was shutdown due to the operation of a protective device, the shutdown malfunction shall be reset when the switch is moved to this position. If the engine is running when the switch is moved to this position, it shall immediately shut down. Automatic

In this position, the engine control shall be in readiness for fully automatic operation upon receipt of a start signal. Test

When placed in this position, the engine shall start and run as if a start signal were received except it shall not be connected to the bus unless a start signal is received. When returned to the Automatic position, the engine shall shut down. Test On-Line



When placed in this position, the engine shall start, run, and connect to the bus as if a start signal were received. When returned to the Automatic position, the circuit breaker shall open and the engine shall run for its cool down period before shutting down.

7. Connection to Data Link

Connection to Data Link: A separate terminal block, factory wired with dry contacts, for each alarm and status indication is reserved for connections for data link transmission of indications to remote data terminals. Data system connections to terminals are covered in another Section.

8. Alarm And Status Indication

Visual and audible alarm and status indication shall be provided on the generator control section to include readout and annunciation for: Function Mode Color Low Oil Pressure Prealarm Amber Low Oil Pressure Shutdown Red High Water Temperature Prealarm Amber High Water Temperature Shutdown Red Over-speed Shutdown Red Fail to Synchronize Prealarm Amber Controls not in Automatic Flashing Red Low water Temperature Prealarm Amber Low water Level Prealarm Amber High Fuel Level Prealarm Amber Low Fuel Level Prealarm Amber Low Main Tank Fuel Prealarm Amber Battery Charger Malfunction Prealarm Amber Circuit Breaker Open Status White Circuit Breaker Closed Status Green Engine Running Status White Visual alarms shall be resettable only after the fault condition has been corrected. The audible alarm shall include a silencing circuit, which after activation will permit audible annunciation of subsequent failures. Lamp test shall be an inherent feature of all door-mounted visual indicators. Visual indicators shall have a minimum illuminated area.

9. Synchronizing Mode Selector Switch

The synchronizing mode selector switch shall have the following positions: Automatic: In the automatic position, synchronizing shall be automatically accomplished as described in the Automatic Synchronizer section. Manual: In the manual position, the automatic synchronizer shall be accomplished manually through the controls as specified in the Master Control section. This position shall not inhibit the generator from being connected to a dead bus through the Multiple Circuit Interlock as previously described.



10. Running Time Meter Provide 5-digit non-reset type, 90mm dial.

11. Failure To Synchronize Reset Switch

A momentary push-button switch shall be provided to reset the ‘Fail to Synchronize’ alarm.

12. Metering

Unless otherwise noted, all meters shall be industrial switchboard type, 115mm scale, 1% accuracy. Provide the following meters for the engine generator control section: Ammeter: 2500-Ampere scale Voltmeter: 500-Volt scale Kilowatt meter: 1500-Kilowatt scale Frequency meter: (47-53)-Hertz scale

13. Ammeter/Voltmeter Phase Selector Switch

An ammeter/voltmeter phase selector switch having ‘Off-1-2-3’ positions to read line current and line voltage shall be provided for the generator ammeter and voltmeter.

14. Manual Paralleling Controls

A selector switch shall be provided to select any generator for manual paralleling. The switch shall simultaneously connect a phase band monitor, synchroscope, and manual paralleling push-button switch to the selected generator.

15. DC Control Power Selector System

Control power for the system logic shall be derived from a nickel-cadmium battery and constant potential charger unit module incorporated within a ventilated and segregated compartment of the master control cubicle. The battery/charger module shall be trickle charged from a 240V/50Hz single phase supply derived from the generator room panel-board. The battery/charger module shall be provided with ancillary equipment as required including: Ammeter marked "charge" and "discharge". Voltmeter. Charge/boost control and indicators. Earth fault alarm relay and indicators. Charge fail alarm relay and indicator.



16. Alarm And Status Panel A panel similar to that described in clause "c" shall provide visual and audible alarm indication as follows: Manual Paralleling Available Green color Engine Generator Status Lights (One set for each Engine Generator)

Running White color On line White color Lock Out Red color

17. System Test Switch

Provide a system no-load test switch to initiate a complete automatic system operation by simulating the closure of the remote engine start signal. This switch shall be mounted inside the master section to limit access to authorized personnel only.

18. Master Audible Alarm

Provide a master audible alarm. The alarm horn shall be the DC vibration type, adjustable from 78 to 102 dB. Include an alarm silencing push-button and circuitry to allow subsequent malfunctions to resound the alarm if the horn has been previously silenced following an initial malfunction. Pre-wire vial control power transformer.

19. Load Demand Monitor

A load demand monitor shall be provided to sense the load connected to the bus and establish the proper number of sets to operate to maintain the connected load with the minimum on-line reserve generating capacity of 10% of the rating of a single set. The load monitor shall initiate the disconnection of a generator from the bus whenever the on-line reserve generating capacity exceeds 120% of a single generator. The load demand monitor shall have adjustable set points for initiating the addition to, and removal from, the bus of the generator sets. The monitor shall be unit chassis construction utilizing solid-state circuitry and integral time delays. The monitor shall sense the bus (KW) real load without the use of thermal transducers or meter relays. The monitor shall be designed to maximize fuel economy while maintaining sufficient capacity to service the load. Provisions shall be included to permit selection of the sequential order of operation of the engine generator sets whenever the system is operating in the load demand mode. This logic circuitry shall permit revision of the operating order of the engine generator sets at any time without requiring shutdown of on-line sets. Visual indication of sequential assignment shall be inherent.



20. Automatic Operation Relays, switching, and other devices and wiring necessary for fully automatic operation of the generator set shall be enclosed in general purpose enclosures or mounted in the switchgear. When the normal supply voltage in any phase drops below a pre-determined value, adjustable from 65 to 90% normal, and for a pre-determined interval of 0 to 4 seconds, factory set at 2 seconds, an automatic operation shall begin. The four generators shall automatically start, accelerate to the governed speed, and build up to the regulated voltage. When the first generator voltage reaches approximately 90% normal, it shall be connected to the bus through the multiple circuit interlock discriminator. The highest priority load requiring emergency power shall then be connected. As the remaining engine generator set starts, its respective synchronizer shall initiate control of voltage and frequency of the oncoming set to cause synchronism with the bus. Upon achieving synchronism with the bus, the generator breaker shall close and the remaining load blocks shall be transferred in priority sequence, until all the loads are connected to the bus. Circuitry shall prevent the automatic transfer of emergency loads to the bus until there is sufficient capacity to carry the loads. Means shall be included to manually override the load addition circuits for supervised operation. First generator on line shall have power available and connected to highest priority loads within 10 seconds. The system shall be designed so that the load shall be reduced automatically upon the failure of any plant. This mode shall override any previous manual controls to prevent overloading the emergency bus. Upon sensing a failure mode on a prime mover, the controls shall automatically initiate disconnect, shutdown and lockout the failed source, and reduce the connected load to within the capacity of the remaining plant. Controls shall require manual reset.

21. Load Demand Control After all generator sets have been paralleled to the bus and all loads connected, a stabilization time delay (0 - 180 seconds) factory set at 180 seconds shall be initiated. At the expiration of the time delay period, the system will operate in a load demand mode. The Load Demand Monitor and its associated controls shall control the number of generating sets on the bus, such that the on-line reserve capacity of the bus is not less than 10%, nor more than 120%, of the capacity of a single generator set. Upon sensing that the connected load has decreased the reserve capacity to 10% or less,a 10 second time delay is initiated. This time delay shall be field adjustable from 0 - 300 seconds. If the reserve capacity stays below 10% for the duration of the 10 second time delay, the controls will initiate the starting and paralleling of the next set in sequence.



If, during the time delay period, the reserve capacity decreases to 0 or less (signifying bus overload), the time delay shall be bypassed and the set shall be immediately started and paralleled. At the same time, a lamp indicating a bus overload shall light and signals shall be given to shed load such that the connected priority blocks of load are reduced to equal the number of engine generator sets on line. When the second set is paralleled to the bus, the shed load shall be reconnected and all controls automatically reset. If while operating in the load demand mode, an engine generator set malfunction occurs, the affected set shall be removed from the bus and load priority blocks shall be shed such that the remaining priority blocks connected are equal to the capacity of the remaining engine generator. Upon sensing that the on-line reserve capacity has increased to 120% or more, a 180 second (adjustable 0 - 300 seconds) time delay shall be initiated. If the reserve capacity stays above 120% for the duration of the time delay the circuit breaker of the last set that went on line shall be opened. The engine shall run for its cool down period, then shut down. Upon restoration of the normal source by means of the four four-pole contactors, the loads shall be re-transferred to the normal source. Upon re-transfer, the engine generator sets shall be disconnected from the main generator bus, run for an adjustable period of up to 15 minutes maximum (factory set at 5 minutes) for cool down and then shut down. All controls shall automatically reset for the next automatic operation.

22. Selector Switch

Selector switch shall permit selection of either generator to function as the first generator, simultaneously connecting the controls for the other generators to be started, synchronized and brought on line upon failure or overload of an on-line generator.

2.08 ELECTRONIC GOVERNOR

The Electronic Governor shall be an adjustable isochronous unit of the electronic-hydraulic type with electrical speed and load sensing for load sharing operation. It shall be controlled electrically from the associated generator switchboard equipment and the governor control switch. The Electronic Governor shall provide adjustable speed setting from 45 to 55 Hz, adjustable speed regulation from zero to 5%, adjustable load limit from 100 to 110% of unit rating. The Electronic Governor shall permit load-sharing among all other generating units provided under this contract, and with an infinite bus for the purpose of transferring load without interruption to the electrical service.



The Electronic Governor shall maintain the frequency constant with ±0.25% for any constant load between 25% and 100% generator rating. After any sudden load change of not more than 15% of rated load, frequency deviation shall not exceed 0.5 Hz. The governor shall re-establish stable operating conditions in not more than 1-1.5 seconds. Stable operation is defined as operation at frequency that is constant within the band of ±0.5 Hz. An over-speed stop device for each engine shall automatically shut off the fuel or otherwise stop the engine when speed exceeds 110% of rated speed. Over-speed device shall be separate and independent from the regular governing mechanism.

2.09 SPARE PARTS

The supply shall include all the spare parts that the manufacturer recommends for a running period of two (2) years of the Diesel Generator Set. These spare parts shall include at least: - Five (5) sets of lubricating oil and gas oil filter elements. - One (1) complete set of rings for the pistons. - Two (2) complete sets of nozzles. - One (1) set of gaskets for engine overhaul. - One (1) set of spare parts for the different apparatus of control and protection as

recommended by the manufacturer. - All other items and pieces of equipment not mentioned above and considered

necessary by the manufacturer. The price of the spare parts shall be included in the price of the set.

2.10 TOOLS

A complete set of engine tools shall be provided for maintenance and repair works. 2.11 TEST CERTIFICATE

The supplier shall submit a test certificate issued by an internationally recognized inspection office certifying that the engine has been tested in accordance with the above-mentioned requirements.

2.12 INSTRUCTION MANUAL

The supplier shall submit three (3) copies of the instruction manual of the supplied Diesel generating set in English.



2.13 SOUND ATTENUATED CANOPY

The generators shall be installed in a sound attenuated canopy providing a sound level no greater than 65dB at 1 meter. This sound level will represent the average measurement taken at several points located equidistant, operating at full load.

All doors of the canopy shall be acoustic type.

2.14 VENTILATION

Ventilation systems must provide enough fresh air for efficient generator set cooling and for engine combustion through canopy louvers openings.

2.15 NOISE

It is recommended that all generating sets installed at roof level shall have soundproof enclosures fitted (canopy). A sound level of 65dBA at 1 meter is recommended. The inside wall and ceiling of the enclosure shall be fitted with rock wool, density 75kg/m3 and recovered by perforated galvanized sheet thickness 7/10. Acoustic doors shall be provided having a thickness of 10cm, frame with 3mm insulation rock wool, density 75kg/m3 and a 50dBA attenuation.

2.16 ACCESSIBILITY

The final upper roof location for the new generator must take into account access and cranage requirements.

2.17 FUEL SUPPLY

A very limited amount of fuel storage is permitted at roof floor (max. 500 liters for a daily tank). Weight and fire consideration are paramount.

2.18 EXHAUST SYSTEMS

The muffler shall be of welded and galvanized steel and designed for outside, vertical or horizontal mounting. Eyebolts, lugs, flanges or other items shall be provided as necessary for support in the location and position indicated by the manufacturer. Pressure drop through the muffler shall not exceed the recommendation of the engine manufacturer.



The muffler and exhaust piping together shall reduce the noise level. The muffler shall have a drain value, nipple and cap at the low-point. Exhaust piping, mufflers and residential silencers installed outside the building shall be insulated and covered to protect the personnel.

2.19 CONTROL AND MONITORING

A. Functional Description: When the mode-selector switch on the control and monitoring

panel is in the automatic position, remote-control contacts in one or more separate automatic-transfer switches initiate starting and stopping of the generator set. When the mode-selector switch is switched to the on position, the generator set manually starts. The off position of the same switch initiates generator-set shutdown. When the generator set is running, specified system or equipment failures or derangements automatically shut down the generator set and initiate alarms. Operation of a remote emergency-stop switch also shuts down the generator set.

B. Configuration: Operating and safety indications, protective devices, basic system

controls, and engine gages are grouped in a common wall-mounted control and monitoring panel.

C. Indicating and Protective Devices and Controls: Include those required by BSS code

and IEE regulations, and the following:

1. Digital AC voltmeter. 2. Digital AC ammeter. 3. Digital AC frequency meter. 4. DC voltmeter (alternator battery charging). 5. Engine-coolant temperature gage. 6. Engine lubricating-oil pressure gage. 7. Running-time meter. 8. Ammeter-voltmeter, phase-selector switch(es). 9. Generator-voltage adjusting rheostat. 10. Start-stop switch. 11. Over-speed shutdown device. 12. Coolant high-temperature shutdown device. 13. Coolant low-level shutdown device. 14. Oil low-pressure shutdown device. 15. Fuel tank derangement alarm. 16. Fuel tank high-level shutdown of fuel supply alarm. 17. Generator overload.

D. Supporting Items: Include sensors, transducers, terminals, relays, and other

devices, and wiring required to support specified items. Locate sensors and other supporting items on engine, generator, or elsewhere as indicated. Where not indicated, locate to suit manufacturer's standard.



E. Connection to Data Link: (Provision) A separate terminal block, factory wired with dry contacts, for each alarm and status indication is reserved for connections for data link transmission of indications to remote data terminals. Data system connections to terminals are covered in another Section.

2.20 GENERATOR OVERCURRENT AND FAULT PROTECTION

A. Generator Circuit Breaker: Molded-case, thermal-magnetic type; 100% rated;

complying with BSS Code and IEE regulations. 1. Tripping Characteristic: Designed specifically for generator protection. 2. Trip Rating: Matched to generator rating. 3. Shunt Trip: Connected to trip breaker when generator set is shut down by

other protective devices. 4. Mounting: Adjacent to or integrated with control and monitoring panel.



3 - EXECUTION 3.01 EXAMINATION A. Examine areas, equipment foundations, and conditions, with Installer present, for

compliance with requirements for installation and other conditions affecting packaged engine generator performance.

1. Proceed with installation only after unsatisfactory conditions have been corrected.

B. Examine roughing-in of cooling-system piping systems and electrical connections. Verify actual locations of connections before packaged engine generator installation.

3.02 CONCRETE BASES A. Install concrete bases of dimensions indicated for packaged engine generators. Refer

to Division 3 Section "Cast-in-Place Concrete" and Division 16 Section "Basic Electrical Materials and Methods."

3.03 INSTALLATION A. Comply with packaged engine generator manufacturers' written installation and

alignment instructions, and with BSS Code and IEE regulations. B. Set packaged engine generator set on concrete bases.

1. Support generator-set mounting feet on rectangular metal blocks and shims or on metal wedges having small taper.

2. Adjust metal supports or wedges until generator is level. C. Install packaged engine generator to provide access for periodic maintenance,

including removal of drivers and accessories. D. Install cooling-system piping, accessories, hangers and supports, and anchors for

complete installation.

1. Extend drain piping from heat exchangers to point of disposition. E. Install exhaust-system piping for diesel engines. Extend to point of termination

outside structure. Size piping according to manufacturer's written instructions. F. Install condensate drain piping for diesel-engine exhaust system. Extend drain piping

from low points of exhaust system and from muffler to condensate traps and to point of disposition.

G. Electrical Wiring: Install electrical devices furnished by equipment manufacturers but

not specified to be factory mounted.



1. Verify that electrical wiring is installed according to manufacturers’ submittal and installation requirements in Division 16 Sections. Proceed with equipment startup only after wiring installation is satisfactory.

3.04 CONNECTIONS A. Piping installation requirements are specified in Division 15 Sections. Drawings

indicate general arrangement of piping and specialties. The following are specific connection requirements: 1. Install piping adjacent to packaged engine generator to allow service and

maintenance. 2. Connect water supply to cooling system. 3. Connect cooling-system water supply and drain piping to diesel-engine heat

exchangers. Install flexible connectors at connections to engine generator and remote radiator.

4. Connect exhaust-system piping to diesel engines. B. Electrical wiring and connections are specified in Division 16 Sections. C. Earth equipment.

1. Tighten electrical connectors and terminals according to manufacturer's published torque-tightening values.

3.05 IDENTIFICATION A. Identify system components according to Division 15 Section "Mechanical

Identification" and Division 16 Section "Electrical Identification." 3.06 FIELD QUALITY CONTROL A. Manufacturer's Field Service: Engage a factory-authorized service representative to

inspect field-assembled components and equipment installation, including piping and electrical connections, and to assist in testing. Report results in writing.

B. Testing: Owner will engage a qualified testing agency to perform field quality-control

testing. C. Testing: Engage a qualified independent testing agency to perform field quality-

control testing. D. Testing: Perform field quality-control testing under the supervision of the

manufacturer's factory-authorized service representative. E. Tests: Include the following:



1. Tests recommended by manufacturer. 2. International Electrical Testing Association Tests: Perform each visual and

mechanical inspection and electrical and mechanical test for emergency engine generator sets.

3. Battery Tests: Measure charging voltage and voltages between available battery terminals for full-charging and float-charging conditions. Check electrolyte level and specific gravity under both conditions. Test for contact integrity of all connectors. Perform an integrity load test and a capacity load test for the battery. Verify acceptance of charge for each element of battery after discharge. Verify measurements are within manufacturer's specifications.

4. Battery-Charger Tests: Verify specified rates of charge for both equalizing and float-charging conditions.

5. System Integrity Tests: Methodically verify proper installation, connection, and integrity of each element of engine generator system before and during system operation. Check for air, exhaust, and fluid leaks.

F. Retest: Correct deficiencies identified by tests and observations and retest until

specified requirements are met. G. Report results of tests and inspections in writing. Record adjustable relay settings and

measured insulation resistance's, time delays, and other values and observations. Attach a label or tag to each tested component indicating satisfactory completion of tests.

H. Test instruments shall have been calibrated within the last 12 months, traceable to

standards of the National Institute for Standards and Technology, and adequate for making positive observation of test results. Make calibration records available for examination on request.

3.07 COMMISSIONING A. Battery Equalization: Equalize charging of battery cells according to manufacturer's

written instructions. Record individual cell voltages. 3.08 CLEANING A. On completion of installation, inspect system components. Remove paint splatters and

other spots, dirt, and debris. Repair damaged finish to match original finish. Clean components internally using methods and materials recommended by manufacturer.

3.09 DEMONSTRATION A. Engage a factory-authorized service representative to train Owner's maintenance

personnel to adjust, operate, and maintain packaged engine generators. END OF SECTION 16231

UNITED NATIONS DEVELOPMENT PROGRAMME OFFICES BEIRUT

2. EXTENDED BILL OF QUANTITIES

UNITED NATIONS DEVELOPMENT PROGRAMME OFFICES BEIRUT - BCD Beirut, Lebanon

EXTENDED BILLS OF QUANTITIES

ITEM DESCRIPTION QTY UNIT UNIT RATE TOTAL (US$)

SECTION 16231 PACKAGED ENGINE GENERATORS

16.1 DIESEL GENERATOR SET

As specified, having a nominal power of150KVA, 380V, three-phase, 50Hz, installedcomplete with diesel engine mounting frame,radiators cooling system, control,synchronizing units with the existing 250KVAand measuring instruments, electronicgovernor, lubrication equipment filters, waterheating system, automatic emergency supplyequipment, starting equipment fuel supply,one daily reservoir for all diesel engines withthe corresponding manual and automatic fillingequipments, filling motor pump unit, floatswitch, manual fuel filling unit, exhaust systemand silencer, sound reducer, canopy enclosure,flexible and rigid connections, isolatedfoundation, switchboard for the control andprotection, battery and battery charger, spareparts, tools and instructions and automaticstarting including all conduits, boxes, cables,wires, junctions and connections and whateverelse not enumerated but which is necessary forthe completion and the perfect functioning ofevery part of the installation, tested andaccepted to the full satisfaction of the ArchitectEngineer

16.1.1 Diesel generator set (150KVA), including thesynchronizing unit with the existing (250KVA).

1 item

The Unit Rate in US $:

TO SUMMARY

DIVISION 16 - ELECTRICAL WORKS

IDEPCONSULTNovember 21, 2007

Div. 16 - ELECTRICAL WORKSPage 1 / 1