C. Crane 19f Especificaciones descargar pdf (Pagina 8)

Installation Recommendations

Mechanical design

Air System

A. Vacuum indicator is supplied with all engines to

indicate choked filter. Max air intake restriction with

clean and choked filter is as follows :

B. Heavy duty air cleaners should

be used for dusty environment.

Contact OEM / Cummins if

enclosure is to be kept in dusty

environment. Please note that

gensets are supplied with

medium duty air cleaners as

standard scope.

C. If fibrous conditions exist, care should be taken to

prevent the fibers getting entered into the enclosure /

air cleaner and no such fibre element shall enter/ block

the air flow of alternator.

Mechanical design

Exhaust System

A. Exhaust system should create minimum total back

pressure.

B.Limits for exhaust back pressure

Model mm (In.) of Hg

KTA50G8/QSK60/S Series/Gas Engines 51 (2)

KTA50G3/KT2300G/VTA28/K19/ NT/N14/B/C/X 76 (3)

New installations should have back pressure lower by

12 mm (0.5”) of Hg than limit mentioned above.

C.Exhaust piping outside the enclosure should be lagged

along with aluminum sheet cladding. Typical thickness

of lagging is 50 mm.

D.If exhaust pipe length is more than 7 m, then additional

flexible bellow / provision for expansion should be

provided.

E. It is recommended to use ‘Schedule B’ MS/

prefabricated stainless steel pipes and long bend

elbows. Please refer Table for pipe sizes. If number of

bends are more than 4 or pipe length is more than 10

meters than contact OEM / Cummins for piping

arrangement.

(See table in next column)

F. The exhaust outlet should be in the direction of

prevailing winds.

G.There should be rain trap to avoid rain water entry.

If rain cap is used the distance between exhaust pipe

and rain cap should be higher than diameter of pipe. It

is also recommended that horizontal run of exhaust

piping should slope downwards away from engine to

the condensate trap. Silencer should be installed with

drain plug at bottom.

Location : Optimum Silencer (when fitted outside

enclosure) Location of the silencer in exhaust system has

very definite influence on both silencing and back

pressure imposed on the system. The preferred silencer

locations are given in the Table where ‘L’ is length of the

total exhaust system measured from exhaust manifold in

meters.

Please note that locating the silencer as per optimum silencer location is

not mandatory. For high rise buildings suitable arrangements may have

to be provided in consultation with acoustic engineer.

(See table in next page)

Engine Model Rating Exhaust pipe Exhaust

(0.8 pf) size max. 4 Gas flow

Bends (No. of banks

Max. Lenght x

10 mtrs. flow per bank)

Min. ID

kVA No. x mm No. x lt. /sec

QSK60 - G4 2000 2 x 325 2 x 2805

QSK60 - G3 1875 2 x 325 2 x 2700

KTA50 - G8 - I 1500 2 x 250 2 x 2220

KTA50 - G3 1250 2 x 250 2 x 1910

KTA38 - G5 1000 2 x 250 2 x 1460

KT38 - G2 - I (2300) 750 2 x 200 2 x 1245

VTA28 - G5 625 2 x 125 2 x 945

VTA28 - G3 600 2 x 125 2 x 930

KTA19 - G4 500 1 x 200 1 x 1600

KTA19 - G3 450 1 x 200 1 x1460

KTA1150 - G 380 1 x 125 1 x 1095

NTA14 - G3 380 1 x 125 1 x 1055

NTA855 - G2 BC 320 1 x 125 1 x 990

NT855 - G6 BC 285 1 x 125 1 x 1160

NT855 - G5 BC 250 1 x 125 1 x 960

NT855 - G4 BC 225 1 x 125 1 x 860

6CTAA8.3 - G1 - I 200 1 x 100 1 x 610

6CTA8.3 - G2 - I 180 1 x 100 1 x 550

6CTA8.3 - G1 - I 160 1 x 100 1 x 540

6CT8.3 - G2 - I 140 1 x 100 1 x 470

6BTA5.9 - G2 - I 125 1 x 100 1 x 225

6BT5.9 - G2 - I 82.5 1 x 100 1 x 225

S3.8 - G7 62.5 1 x 75 1 x 190

S3.8 - G6 50 1 x 75 1 x 150

S3.8 - G5 45 1 x 75 1 x 150

S3.8 - G4 40 1 x 75 1 x 150

S3.8 - G3 35 1 x 75 1 x 115

S3.8 - G2 30 1 x 75 1 x 115

X2.5 - G2 25 1 x 50 1 x 75

X2.5 - G1 20 1 x 50 1 x 75

X1.7 - G1 15 1 x 50 1 x 50

X Series S Series S Series All Engines All Engines Gas

(Naturally (Turbo with medium with heavy engine

Aspirated) charged) duty A/c duty A/c

mm/wc (in/wc) mm/wc (in/wc) mm/wc (in/wc) mm/wc (in/wc) mm/wc (in/wc) mm/wc (in/wc)

Clean filter 250 (10) 250 (10) 250 (10) 250 (10) 380 (15) 200 (8)

Choked filter 400 (15.7) 380 (15) 500 (20) 635 (25) 635 (25) 380 (15)

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C. Crane 19f Especificaciones Pagina 8

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