7/24/2019 Mega Yacht Electrical Loads example

1/3

MEGAYACHT

HARBOUR

EMMPLE

LOAD LIST

(LOADS

IN KW)

CREW

CREW AND

GUESTS

E310

lree'i1q

qear

pump (

1

-

N/SB; 2- ESB)

4

4,90 0,80 3.92 15,68

o% 0,00

0% 0,00

E610

vlain enqine Lub oil

priminq

svstem

2

2.40 0.80 1.92

3,84 0% 0,00

0% 0,00

E61 0

\,4ain engine Coolant

pre-heating

unit

2

20.00 0,80 16.00

32.00

25"/"

8,00

25% 8,00

8650

\ux enq

sw

pumps

exhaust

3 1,00

0,80 0,80 2,40 a% 0,00 o% 0,00

ieneraiorroom fan

PS

1 1.10 0,80 0.88 0.88 100% 0.88

1004k 0,88

ienerator coo ers

PS 2 1,50 0,80

1,20

2,44 50%

1.20 50% 1,20

E7

10

;tarting

air

compressol

2 5,50 0,80 4,44 8,80 2.20

25"k 2,20

E7

14

\ir Dryer

0,33

0.80

o,26 4,26

25a/. 007 25% 0.07

E72A

uel

oil

transfer

pump

400 0.80

3,20 3,20

ao/. 000 0% 0.00

E730 .ub

oil

transfer

pump

3,00 0,80 2.40 2.40 00k 0.00

0% 0,00

E81 0

ire fighting

/

bilge

pump

2 17,50 0,80 14,00 28,00 0% 0.00

aa/"

0,00

E81 0

merqencv fire

fiqhting

pump

17.50

0,80 14,00

M.AA

oak

0.00 0% 0,00

ngine

room fans

2 15 00

0,80 12,OO

24

AO

6.00 6.00

oiAL-

PROPULSION,AUXiLIAHIES.,

137.'a8 18,35

18.35

E320

,nchor/ moorino winches Fwd 2

15,00

0.80 12,00

24,OO

ook

0,00

a% 0.00

E875

'lot

water circulation

pumps

3 0,22

0,80

0,18 0,53 100% 0,53

1

00%

053

E881 iewage plant

12,O4

0,80 9,60 9,60

20%

1,92

400/"

)rovision

coolinq svstem

20,00

0.80 16,00 16 00 20a/" 3.20 20% 3.24

'orll

ssrps

sERVtcE AUxtLIARTES

ts,13- 5,65

7,5?

E802 leli fuel

pump

skid

150 0,80

1,20

120 oo/.

0,00

a% 0.00

E346 leli foam

water

pump

30,00

080

24,00

24,4O oa 0,00

aok

0.00

I.oTAL HELIcOFTER AUXLI,ARIES

25,?0

0-00 o,{x}

'ow

thruster

300,00 0,80 240.44 240.00 o% 0,00 0%

0.00

;tern

thruster

250,00

0.80

200,00

200,00

ao/"

0,00

0% 0.00

,OIAL.TfIRUSTERS

'440,00,

0,00 c,{R

ilain Gallev Crewdeck

452 )eramic cooking

plate,

supply

'1+

2

8,00 0,80 6,40 6,40 10% 0,64

4Aa/. 246

452

iduction

cooking plate,

supply

1

+

2

5,00 0,80 4,00

4,00 1jak

0,40

4Aan

150

452 re cube maker

067

0.80

0,54 0,54 0,03

T0".

3 C5

452 lefrigeraior

2

4,23

0,80 0,18

0,37 5%

a,a2

5c: ta2

452 )lshwasher 2 5.00 0,80 4.00 8.00 5./" 0.40

5..

0.40

1CTALGALLEYAND

PANTRY 19,30

r,49

4,63

Vashinq machine

6 5,50

0.80 4,40

26,44

20%

528

6:::

1 5.84

E453

)ryer

6 6.44

0,80

5,

15

30.91 20%

6.18

a-

_r

O.JC

E453 iteam

iron

,I

0,85

0.80 0,68

0,68

2a% o.14

0.41

.OTAL

LAUNDRYEOUIPMENT

57,99

11,50 3/*.80

lattery charqer General seryice

1

1,20 0,80 0,96 0,96

1

0a/"

10:.

0,10

E51 6

,lormal

iqhting

(nterio0

300

0,01

0,80

0,01

2.44

50?/"

120

:merQencv

rohtrnq

ouests

(rnterior) 400

0,01

0,80

0,01

3.24

10".0

50%

1

,60

E51 I

xterior

I

ghl

ng 770

0,0'1

0,80 0.01

6,1

6 50.. 50% 3,08

E561 \larm and

monrtoflne Insta lalron

,]

2,00

0,80 1,60

1,60

10:

-

104/.

0,'16

IOTAL

-LECTRICAI

EOUIPMENT 1432

,r,8

8,14

)reheaters

AC1-AC5

1

52,00

1,00

52,00 52 00

aa0

ao/^

000

ansACl-AC5

(frequencv

cc.:ro eC)

1

27 50

,00

27 50 27

5A

-o

63 7 50/o 20.63

ryaterchillers

l-4 (f eque.c) :c rJ'rc 63.00

1

,00

63.00 252

0D

53.00

63% 1 58,76

luoDlv fans accommodal on

1 7.00 1.00 700 7.00 7.00 100%

7,00

E761

\uxiliarv

seawater

c rcu atrnq

pump

2 15

00 1.00 15 00 30

0:r 15

00 50% 15,00

E762 \uxiliary

F'eshwate' c rcLralilg

pump

2 30.00 1,00 30.00 61. I 30 00 50%

30 00

:resh

alr unit

crew fan

1 10 100 1 .10 1

.10

1000k

1,10

OTAL

HVAC

EQ.UIPII4ENT

/+29,6{

a%

125,72 0%

?32A5

1.174

'168

304

LOAD

HARBOUR

472

The

abave

list with

cansumers

and their

maximal

elec-

tric consumptian, under

tke

variaus

standard

circum-

stances,

is

called the

loact

balance.

Thls is

a

shortened

examp e af such

a list.

A rea istic list

with

'all'

consumers

woulcl

take a

cansiderable

number

of

pages.

7/24/2019 Mega Yacht Electrical Loads example

2/3

1.6.4

Manoeuvring

with guests

Again

this

is

the

up_scaled

version

of

the previous

condition.

The

ef_

fect

will

be

a

higher

connected

load.

As

there

will

be

enough

electrical

power

all

consumers

can

be

con_

nected

with

the

same

restrictions

as

mentioned

before

The

resulting

expected

electrical

loads

are

shown

in

the

example

of

the

load

balance

in

the

column

.,ma_

noeuvring

with

crew

and

guests,,

1.6.5

Sailing

without

guests

In

this

condition

the

power

man_

agement

system

will

limit

the

total

generated

power

to

one

genera_

tor.

This

will

be

an

environmentally

friendly

profile

where

the

load

of

one

generator

is

limited

to

an

op_

timum

95yo.

When

required

the

power

manage_

ment

system

will

temporarily

re_

duce

the

Ioad

of

some

consumers

like

the

HVAC

system

or

switch

off

the

non

essential

consumers.

The

resulting

expected

electrical

loads

are

shown

in

the

example

of

the

load

balance

in

the

column

Sail_

ing

with

crew.

1.6.6

Sailing

with

guests

This

is

the

extended

version

of

the

previous

condition

with

the

HVAC

systems

for

crew

and

guests

at full

capacity.

The

actual

power

con_

sumption

will

depend

on

the

out_

side

temperature.

The

power

management

system

will

control

the

total

generated

power

and

will

normally

connect

one

or

two

generators.

The

resulting

expected

electrical

loads

are

shown

in

the

example

of

the

load

balance

in

the

column

Sail_

ing

with

crew

and guests.

1.6"7

Emergency

mode

In

an

emergency

the

consumers

as

listed

will

have

to

be

supplied,

Sufficient

spare

capacity

should

be

part

of

the

design

to

allorv

starting

of

the

largest

emergency

pump

and

distribution

losses.

The

resultjng expectec

electrjcal

loads

are

sno,.,-

^

r^e

exanple

of

the

load

baia^ce

in

the

column

"Emeroency"

7/24/2019 Mega Yacht Electrical Loads example

3/3

1.7

Load balance small

sailing-yacht

Although

not

obvious,

a small

sail-

ing

boat

will

also

require

a load

bal-

ance

of

some sort.

A single line

for a

yacht

like

this

is

shown

in

chapter

33. This

yacht

has

a

shore

supply,

a

dynamo

on the

main

engine

and a solar-cell

and/

or

a wind-

generator.

In

port

the

primary supply

will

be

the shore

supply, taking

care

of

heating,

cooking, ventilation

and

battery

charging,

When

sailing there

are

two modes:

-

running

on the engine

and

charging

the

batteries

with

the

dynamo.

sailing

on

wind

power

and charg-

ing

the

batteries with

the wind

generator

in combination

with

the solar cells.

The

capacity

of the

solar

cells

and

the wind

generator

is very

limited

when

compared

to

the

dynamo

on

the engine

and

heating

and/

or

cooking

with the

engine

off

may

very

well

be impossible.

On\y

some \ighting

and

some

com-

\\\\\qa\\\

\(\a\ \e

\\Ss\q\e

\\\

a

longer

period

when on sails

cr

,

Therefore

cooking

on

sailing

bc=:. :

seldom

done using electrical

::,,,=-

Normally

gas

(butane

or

prop--:

or

kerosene

is

used.

When

the

battery

power ge:s

:r

the

engine

must

be

starte:

::

charge

this again. Failing

to

c:

s:

will

cause

communication

sys:e-:

to fail after

some time which

c:-

:

jeopardise

safety of the crer',

-

=-

emergency.

For

that reason

often battery

cc.:

tion

meters are

installed.

TYPE CONSUMER

OPERATIONAL

HARBOUR

E*s0,Er}*isa=#Big==,.:

:::::1-:..i1fi

PROFI

LES

CREW

CREW AND

GUESTS

CREW

CREW AND

GUESTS

CREW

CREW AXD

GUESTS

PROPULSION

AUXILIARiES

33,40

33,40 62.52

62

52

SHIPS SERVICE AUXiLIARIES

27,58

74,90

q

r)

50,54

0,0 0

H ELlCOPTER

AUXILIARIES

0,00

0,00

0,00

0,00 0,00

TH

RUSTERS

2,OO

2.00

3 60.40

3

60..10

0,00

C,::

GATLEY/PANTRI

ES

3,30

76,95

3,3 5

13.t9

LAUN

DRIES

to,79

32,38 70,79

70,79

32.:S '

'

NAUTICAL

18,36

27,44

1 8,56

27,64 18,56

27

SUBTOTAAL

95,43

La7,06

460,74

545,44 95,22

t79,62

lIl

E[4

ERGENCY

H EATING/VENT/AIRCO

14INUS

5 299,02

436,01

zsg,a7.

436,01

ZERO

275,74

365,64

775,74

36s,64 z/a

365.64

PLUS5

235,70

302.03

l

235,10

l

302;03

23

382,03

PLUS 1 O

220, L4

282;36

229,14

?8z,36 282,#

PLUS

1 5

171;8O

z6,a'12 26O;12

.264,12

171,80 258,12

PLUS2O

t36;73 243;49

:r

136,73

|

2[fi,7.3

1373

zto,73

PLUS25

162;87

23939

162.87.

239,39

162,A7 239,39

PLUS3O

))o

oa

z47,.tt

?'29;9x 242,,r.t

))a a7

242,1\

PLUS3

5

262,73

272,X5

262,73 2V2,35 262,73

27L35

AVAILABLE

GEN

CAPACITY

295,00

587,00

BBO,OO

BBO,

OO 309,00 588,00

GENERATORS RUNNING

1,00

2,O0

3,00

3,00

1,00 2,00

GENERATOR

CAPACITY

309,00

309,00

309,00

309,00

309,00 309,00 ::: ,:

GEN TOT. CAP,

3O9,OO

618,OO

927,O4

927,OO

3O9,OO

614,43 1tqtf,

o/oGE

N

ERATORCAPACITY

0,95

0,95

0,9 s

0,9 5

0,9 5 0,9 s

GEN

TOT. CAP. AFTER

CORR

293,55

587,1O

8AO,65

aao,55

293,55 547,10 17r,I

AVAILABLE

FOR HVAC

198,12

4OO,O4 4L9,9r

333,77

198,33 4O7,44

r7tt)

Sumrnary

sheel

of

a

laael

balanae.

Green

marked

cells are withln

capability

of

generators.