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POWER PRODUCTS
PAC COURSE
12th May 2016
PRESENTATION• Engine Derating & Sizing
• Genset Basics – Electric generation,
• D&S Range and Key Features
• Genset Sizing Tips
• Synchronization
• Remote Monitoring
• Installation Planning
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HISTORY Year Milestone
1946 D&S Established
2007 Dedicated Sales Dept for Power
2011 Yanan Partnership
Dayliff DG Generators
2013 New Supplier of DG Generators
2014 Kohler Partnership
2016 Partnership with Jubaili (Perkins UK)
D&S SCOPE
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GENERATORS & ANCILIARIES, WELDING SETS
PUMPS & FIRESETS
BARE SHAFT ENGINES
SPARE PARTS
THE WORKING
Air FilteredNatural & Forced InductionFlywheel
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ENGINE RATED POWERContinuous Power: - Continuous heavy-
duty service where the engine isoperated at maximum power and speedup to 100% of the time withoutinterruption or load cycling
Intermittent Power: - Fuel Stop Power(IOFN) – Maximum power at a statedspeed for a period of 1 hour in 12 hourscontinuous running.
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DERATING ENGINESRatings based on some standard
reference conditions i.e. for NA EnginesAir inlet temp – 20 - 25oCRelative Humidity – 30%Altitude – 100m
Air pressure, temperature & humidity affect the air density Engine Output
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Selection Example – EngineDriven Pump
Determine a suitable engine driven pumpto deliver 35m3/h @ 80m total head. SiteAltitude is 1650m asl, ambient temp is26oC.
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Over loading:• Overheating of the engine & coolant system• Oil viscosity breakdown causing rapid engine wear• Shortened working life of the Engine
Under loading:• Engine not heating up to normal working temp• Oil leakage caused by poor sealing by piston rings• Lacquer formation on the piston cylinder liners• Increased maintenance costs; reduction in power
OVERLOAD/UNDERLOAD
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UNDER LOAD – WET STACKING
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D&S ENGINE RANGE• Generally classified into:
–Governing - Fixed (G-build)/ Variable speed
–Fuel – Petrol or Diesel
–Cooling System – Air/ Water
–Starting method – Hand/ Electric
KOHLER ENGINES
• Two models stocked – G Drive Engines - 1500rpm– Variable Speed – 2000 – 3000rpm
• Air & Water Cooled– Simplified design (Water cooling design)– Simpler maintenance requirements – Hand / electric start options
• Nomenclature– KD 477/2
– 6.5 to 27kW
– 1500 – 3000 RPM
Air CooledKOHLER KD ENGINES
Water Cooled– 24.5 to 33kW
– 2000 – 2600RPM
DAYLIFF DLA ENGINES• Compact air-cooled engines
– LA186FA & LA290 1 & 2 Cyl engines
– Other products – DCX1 80D; DG6000D; DCT150D; DG11000D
• 10HP & 17HP power output
• 5.5 and 7lt engine mounted fuel tanks and drive shaft
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DAYLIFF LOV ENGINES
Engine Data 1004-4Z 1004-4TZ
Continuous
Power kW
1500 rpm 41 65
1800 rpm 46 72
2200 rpm 50 75
• Variable speed design
• Two model, NA and Turbo charged
• PTO on flywheel, fuel tank not incl.
DAYLIFF PETROL ENGINE• 5.5HP max power rating• Max speed 3600rpm• Air cooled- simplified
design• Compact and low weight• Integral 3.6L fuel tank• Competitive pricing
GENERATOR SYSTEM
GENERATOR SYSTEM• A combination of a diesel engine with an
electric generator & various ancillarydevices (Genset)
• Classified - Portable or Fixed
• Open, Canopy or Containerized
• Typical Applications• Off grid, emergency supply or grid support
or export to Grid
GENERATOR SYSTEM
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D&S RANGE
• Sourced for Jubaili Brothers
• 9 to 2500kVA prime power rating
• Perkins (UK/USA) engines
• High efficiency Mecc Alte/ Leroy Someralternator
• Assembly UK (Marapco) & UAE (JET)
DAYLIFF JET RANGE
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• A large manufacturer of alternators, generators & Motors (1991)
• Group 3 factories – Fujian, Ningde, Xiamen
• 4 Engine Options – Foton, Lovol, Cummins
• Customized Solutions
DAYLIFF YANAN RANGE
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• Based on Isuzu Engine design
• Ind., Agric. & Vehicles
• 20 – 30kVA
YANAN ENGINE OPTIONS
• Joint Sino – UK Venture• Customized for ease of
maintenance Service parts on one side
• Ind., Agric. & Vehicles• 45 – 135kVA
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• World class manufacturing facilities • Local Support – Many distributors • D&S 150 - 250kVA available ex-
stock• Wider range available–up to 2000kVA
CUMMINS GENSET
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DEEP-SEA MODULES
• Deep-sea 6020 & 6120• AMF Capability• Load Transfer Switch – Motorized and
Contactor Based• YANAN ATS – For both Yanan &
Jubaili generators
KOHLER GENERATORS• High and Low Speed Configurations• Yanan & Linz Alternators as options• Fitted C/panel – MCB, on-off switch,
hour-meter, digital display• Inbuilt Autostop protection• Dayliff iMaster panel
• Premium Honda engine• 2.2 to 6.5kVA 1 phase
power rating• Large capacity fuel tank
for longer operation• DC output for extra battery
charging• Compact and light weight
design
ELEMAX HONDA GENSET
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DG-P PETROL GENSETS
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• 0.6 to 10kVA 1 phase power rating• Value for Money – Reliable, Efficient• Auto start function for DG-PS series• DC output for extra battery charging• Warranty, Spares and after-sale service
DG-D DIESEL GENSETS
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• 4.5 to 10kVA 1 phase • 12.5kVA 3 Phase• Auto start function for DG-DS
series
DAYLIFF DGW• Option for Petrol or Diesel• Diesel - 4.2kVA AC output; 180A arching
current; 28-35VDC• Petrol – 5kVA AC 200A welding current• Complete with electrode holder, welding clamp
& output plugs
• Total Power DemandList of appliances & ratingsEnergy meter readingsClamp meter readingEnergy analyzers – Data logger
• Consideration for special loads• Future expansion plans• Deration requirements
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GENSET SIZING
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Rule of thumb;Generator size (kW) = motor size (kW) x k.k = factor ranging between 2.5 to 3
Example:Determine Genset size to start a 4 kWBorehole water pump.
Explanation:Use rule of thumb; kW = motor size x 2.5Genset required = (10 kW or 12.5 kVA)
SIZING FOR MOTOR LOAD
What are the key issues to consider?
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GENSET INSTALLATION PLANNING
ACCESS & MAINTENANCE
The set may be located in the
basement or on another floor of the
building, on a balcony, in a
penthouse on the roof or even in a
separate building.
Usually it is located in the basement
for economics and for convenience
of operating personnel.
The generator room should be large
enough to provide adequate air
circulation and plenty of working
space around the engine and
alternator.
VIBRATION ISOLATION
Other effects of engine
vibration can be minimised
by providing flexible
connections between;
Engine and fuel lines.
Exhaust system
Radiator air discharge duct
Conduit for control and power cables
Other externally connected support systems.
20-40%
33%
Engine Radiations
ElectricityRadiator
30-40%
Exhaust
VENTILATION
The generator set
should be located so
that the engine intake
draws air from the
cooler part of the room.
If there are two or more
generator sets, avoid
locating them so that
air heated by the
radiator of one set
flows toward the engine
intake or radiator fan of
an adjacent set.
VENTILATION CONT.
ENGINE EXHAUST SYSTEM Engine exhaust must be directed to the outside through a properly designed exhaust
system that does not create excessive back pressure on the engine.
A suitable exhaust silencer should be
connected into the exhaust piping.
Exhaust system components located within
the engine room should be insulated to
reduce heat radiation.
The outer end of the pipe should be
equipped with a rain cap or cut at 60° to the
horizontal to prevent rain or snow from
entering the exhaust system.
If the building is equipped with a smoke detection
system, the exhaust outlet should be positioned so it
cannot set off the smoke detection alarm.
Engine Exhaust BSP Bore Sizes (in)1 1 ¼ 1 ½ 1 ¾ 2 2½ 3 4
Length of pipeEps
m ft m ft m ft m ft m ft m ft m ft m ft
1 4.5 151¼ 10.9 36 4.5 1.51½ 22.8 75 9.4 31 4.5 151¾ 42.7 140 17.4 57 8.2 27 4.5 152 73.1 240 29.9 98 14.3 47 7.6 25 4.5 15
2½ 73.1 240 35.0 115 18.9 62 11.0 36 4.5 153 73.1 240 39.3 129 22.9 75 9.4 31 4.5 154 124.7 409 73.1 240 29.9 98 14.3 47 4.5 156 151.5 497 73.7 240 23.2 769 117.0 384
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EXHAUST PIPE SIZING CHART
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TRANSFER PANEL• AMF – monitors utility & initiates
automatically load transfer
• ATS – Automatically connects the load to available power
• Capacity must be matched to the rating of the service equipment
• Two types: manual and automatic
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EARTHING• For safety of personnel, genset
and connected equipment• Earthing resistance should be
checked to be less than one ohm• Suitable grounding method for the
size of genset• Type of soil affects earthing
resistance• Sizing earth cable
INSTALLATION ACCESSORIES
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INSTALLATION ACCESSORIES
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GENSET SYNCHRONIZATION
Q. Why Do we need to synchronise generators?
– To allow the generating capacity of the system to be expanded as site load increase
– When site load varies greatly multiple units avoid a scenario of “light loading”, which will damage the engine
– Physical constraints of the installation site– Allows uninterrupted supply even during
servicing/maintenance– In some cases, cost
PHASE SEQUENCE
PHASE ANGLE
Building Load
Generator load switches
Building Load
Generator load switches
Building Load
Generator load switches
REMOTE MONITORING
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REMOTE MONITORING H/WARE
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DSE Gateway
DSE Module GPRS
Ethernet
What we can monitor?
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Generator A,V,kW,pf,kWh,kVA
What we can monitor?
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Mains Voltage
What we can monitor?
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Engine Performance
What we can monitor?
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Digital input and Out relay positions
What we can monitor?
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Alarms
What we can monitor?
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Location
What we can monitor?
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Historical Data
What we can control?
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Switching On/Off
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750KVA KPC – KISUMU DEPORT
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500KVA SYNC- SAFARI BUS. ARCADE
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400KVA - THIKA HIGHLANDS
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250KVA- SKETCHERS DESIGNERS
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250KVA- UON ICT CENTRE
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135KVA- KAFOCA HOSTELS
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200KVA SYNC- SHAR TIMBER
Questions?
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