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8/18/2019 (30) Size of DOL-Star Delta Starter Javid Sodagar
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System Voltage 415 Volt
Phase 3 Phase 3
Type of Motor 3 Phase Induction
Motor Size 5 HP 3!3
Motor "ode #Motor $fficiency %&'
Motor (PM !5&
System P) &%
#pplication of Motor Motor *oad in Household #pplication
Place of Over Load Relay In the line +Putting the o,erload -efore the motor.
Motor Torque / Current
Motor (ated Tour/ue +)ull *oad.0 35 l-ft +5252Hp
Motor (ated Tour/ue +)ull *oad.0 4! m +5&&678
Motor Starting Tor/ue0 142 m
*oc9 (otor "urrent I*+Min.0 ! #mp
*oc9 (otor "urrent I*+Ma.0 22 #mp
Motor Starting "urrent 0 45 #mp +: to ! )u
Motor )ull *oad "urrent +*ine.0 6 #mp
Motor )ull *oad "urrent +Phase.0 4 #mp
Fuse (As per NC 4!"#$%&
onTime ;elay )use +Ma. ' #mp +3 full *o
Time ;elay )use +Ma. '' #mp +1!5 full
C)rcu)t *rea+er (As per NC 4!"#$%&
Instantaneous Trip "ircuit
8/18/2019 (30) Size of DOL-Star Delta Starter Javid Sodagar
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4:
= &3!
25
1 Phase
3 Phase
HP
6>
Single Phase3 Phase Induction
Synchronous
>ound (otor
;irect "urrent
Appl)cat)on Contactor Ma+)n- Cap
onInducti,e or Slightly Inducti,e ?(esisti,e *oad #"1 15
Slip (ing Motor #"2 4
S/uirrel "age Motor #"3 1&
(apid Start 8 Stop #"4 12
S7itching of $lectrical ;ischarge *amp #"5a 3
S7itching of $lectrical Incandescent *amp #"5- 15
S7itching of Transformer #":a 12
S7itching of "apacitor
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D 2: :2
H :3 !&
I !1 !
6 % %
*
M 1& 111
112 124
P 125 13
( 14 15S 1: 1!
T 1% 1
E 2& 223
V 224
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System Voltage
Phase
Type of Motor
5 Motor Size
Motor "odeMotor $fficiency
Motor (PM
System P)
#pplication of Motor
Place of Over Load Relay
Motor ,tart)n- / Full Load Current
(PM. Motor (ated Tour/ue +)ull *oad.
PM. Motor (ated Tour/ue
Motor Starting Tor/ue
*oc9 (otor "urrent I*+Min.0
*oc9 (otor "urrent I*+Ma.0
ll *oad "urrent. Motor Starting "urrent 0
Motor )ull *oad "urrent +*ine.0
Motor )ull *oad "urrent +Phase.0
Fuse (As per NC 4!"#$%&
d "urrent . 3 onTime ;elay )use +Ma.
*oad "urrent . 2 Time ;elay )use +Ma.
C)rcu)t *rea+er (As per NC 4!"#$%&
d "urrent . % Instantaneous Trip "ircuit
8/18/2019 (30) Size of DOL-Star Delta Starter Javid Sodagar
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4:
&3!
25
!'4
!'4
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8/18/2019 (30) Size of DOL-Star Delta Starter Javid Sodagar
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415 Volt
3 Phase 3
3 Phase Induction
1& HP ! 1&
#1&&'
:&&
&%
onInducti,e or Slightly Inducti,e ?(esisti,e *oad
In the 7indings +o,erload is placed after the >inding Split in to main and delta "ontactor.
%% l-ft +5252Hp(PM.
11 m +5&&678(PM.
35: m
14 #mp
44 #mp
3 #mp +3 )ull *oad "urrent.
'! #mp
. #mp
! #mp +3 full *oad "urrent .
%! #mp +1!5 full *oad "urrent .
'"4 #mp +% full *oad "urrent .
!% #mp +25 full *oad "urrent .
$ #mp
#mp
8 #mp
AC'
' #mp
8 #mp +Start?Transition?(unning.
8 #mp +(unning.
4 #mp +Start.
!"0s
2)-nes3par0ar 555electr)calnotes5ordpressco0 )-u
+18√3 )ull *oad "urrent.
+18√3 )ull *oad "urrent.
+183 )ull *oad "urrent.
TA STARTER
http://www.electricalnotes.wordpress.com/http://www.electricalnotes.wordpress.com/
8/18/2019 (30) Size of DOL-Star Delta Starter Javid Sodagar
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&
3
2
%
3
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Single Phase
Synchronous
>ound (otor
;irect "urrent
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8/18/2019 (30) Size of DOL-Star Delta Starter Javid Sodagar
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me e a use on me e a use nstantaneous r n,erse me3&&' 1!5' %&&' 25&'3&&' 1!5' %&&' 25&'3&&' 1!5' %&&' 25&'
15&' 15&' %&&' 15&'
15&' 15&' 2&&' 15&'
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ARRANGEMENT OF MAIN CONTACTOR
MA9N CONTACTOR
' NO ' NC
1 3 5 13 1 3 5 21
2 4 : 14 2 4 : 22
NO:'!#'4 NC:%'#%%
' NO ; 'NC % NO ; 'NC
1 3 5 13 21 1 3 5 13 21 43 31
2 4 : 14 22 2 4 : 14 22 44 32
NO:'!#'4 NO:'!#'4< 4!#44
NC:%'#%% NC:%'#%%< !'#!%
% NO ; !NC % NO ; 'NC
1 3 5 13 21 31 41 53 1 3 5 13 43 53 21 31
2 4 : 14 22 32 42 54 2 4 : 14 44 54 22 32
NO:'!#'4< $!#$4 NO:'!#'4< 4!#44< $!#$4
NC:%'#%%< !'#!%< 4'#4% NC:%'#%%< !'#!%
% NO ; %NC
1 3 5 13 21 31 43
2 4 : 14 22 32 44
NO:'!#'4< 4!#44
NC:%'#%%< !'#!%
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& AUXILIARY CONTACTOR
A=>9L9AR? CONTCTOR
!NO ; 'NC 'NO ; 'NC
13 33 43 21 21 13
14 34 44 22 22 14
NO:'!#'4< !!#!4< 4!#44 NO:'!#'4
NC:%'#%% NC:%'#%%
%NO ; %NC 'NO ; 'NC
13 21 31 43 43 31
14 22 32 44 44 32
NO:'!#'4< 4!#44 NO:4!#44
NC:%'#%%< !'#!% NC:!'#!%
%NO ; %NC %NO ; %NC
53 :1 !1 %3 53 :1 !1 %3
54 :2 !2 %4 54 :2 !2 %4
NO:$!#$4 8!#84 NO:$!#$4< 8!#84
NC:6'#6%< .'#.% NC:6'#6%< .'#.%
'NO ; !NC
13 21 31 41
14 22 32 42
NO:'!#'4
NC:%'#%%< !'#!%< 4'#4%
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,=MMAR? OF CONTACTORMA9N CONTACTOR: '#%< !#4< $#6
N*: ?ou can eas)ly )dent)fy @3et3er Contactor )s NO < NC fro0 aove ,u00ary
A=>9LAR? CONTACTOR: (NO& : '!#'4< !!#!4< 4!#44< $!#$4< 8!#84
A=>9LAR? CONTACTOR: (NC& : %'#%%< !'#!%< 4'#4%< 6'#6%< .'#.%