power products - davis & shirtliff · pdf file•deep-sea 6020 & 6120 ... •two...

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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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