AutomationDirect Stellar SR55 User manual

Stellar®Sr55 Soft Starter
Quick-Start Guide

2
SR55 Quick-Start Guide
Stellar® SR55 Soft Starter Quick-Start Guide – 1st Ed., Rev.E – 02/02/2017
Table of Contents
Safety � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � 3
Important information � � � � � � � � � � � � � � � � � � � � � � � 3
Environmental – Installation � � � � � � � � � � � � � � � � � � � 5
Dimensions � � � � � � � � � � � � � � � � � � � � � � � � � � � � � 5
Wiring Connection� � � � � � � � � � � � � � � � � � � � � � � � � 9
Programs � � � � � � � � � � � � � � � � � � � � � � � � � � � � 12
Ratings Table � � � � � � � � � � � � � � � � � � � � � � � � � � 13
Technical Information � � � � � � � � � � � � � � � � � � � � � � 14
Motor Overload Cold Trip Curves � � � � � � � � � � � � � � � � �14
Technical Information/Standards � � � � � � � � � � � � � � � 15
Standards � � � � � � � � � � � � � � � � � � � � � � � � � � � � 16
Temperature Range � � � � � � � � � � � � � � � � � � � � � � � �16
Altitude Range � � � � � � � � � � � � � � � � � � � � � � � � � � �16
Agency Approvals� � � � � � � � � � � � � � � � � � � � � � � � � �16
Wire Sizes and Torques � � � � � � � � � � � � � � � � � � � � � �16
Short Circuit Protection � � � � � � � � � � � � � � � � � � � � � �17
Notes� � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � 19

SR55 Quick-Start Guide
1st Ed., Rev.E – 02/02/2017 – Stellar®SR55 Soft Starter Quick-Start Guide 3
Safety

Installers should read and understand the instructions in this guide prior to installing,
operating, and maintaining the SR55 soft starter.
The following symbols may appear in this guide or on the soft starter to warn of potential
hazards or to draw attention to certain information.
Dangerous Voltage
InDIcates the presence of ahazarDous Voltage whIch coulD result In personal Injury or
Death.
tensIon Dangereuse
InDIque la présence D’une tensIon Dangereuse quI peut entaîner Des blessures ou la mort.
warnIng/cautIon
InDIcates apotentIal hazarD. any InstructIons that follow thIs symbol shoulD be obeyeD
to aVoID possIble Damage to the equIpment, anD personal Injury or Death.
aVertIssement/mIse en garDe
InDIque un Danger potentIel. toutes les InstructIons suIVant ce symbole DoIVent être
obserVées, afIn D’éVIter les Dommages De l’équIpement et les blessures ou la mort.
Protective Earth (Ground)
Indicates a terminal which is intended for connection to an external
conductor for protection against electric shock in case of a fault.
Mise à la terre (Masse)
Indique une borne dont l’usage prévu est d’être connecter
à conducteur externe pour assurer la protection contre
les chocs électriques en cas de défauts.

The examples and diagrams in this manual are included solely for illustrative purposes. The
information contained in this manual is subject to change at any time and without prior notice.
In no event will responsibility or liability be accepted for direct, indirect or consequential
damages resulting from the use or application of this equipment.

Les exemples et les schémas de ce manuel ne sont donnés qu’à titre illustratif. Les
informations présentées dans ce manuel peuvent être modifiées sans avis préalable.
En aucun cas nous n’assumons la responsabilité ou l’obligation pour les dommages directs,
indirects ou consécutifs qui résultent de l’utilisation ou application de cet équipement.

SR55 soft starters are not short circuit proof. After severe overload or short circuit, the
operation of the soft start should be fully tested by an authorized service agent.

Les démarreurs progressifs SR55 ne sont pas à l’épreuve des courts-circuits. Après une
forte surcharge ou un court-circuit, le fonctionnement du démarreur progressif doit être
intégralement vérifié par un agent de maintenance agréé.

4
SR55 Quick-Start Guide
Stellar® SR55 Soft Starter Quick-Start Guide – 1st Ed., Rev.E – 02/02/2017

• SR55 soft starters contain dangerous
voltages when connected to the mains
supply. Only qualified personnel that have
been completely trained and authorized,
should carry out installation, operation and
maintenance of this equipment.
• Les démarreurs progressifs SR55 contiennent
des tensions dangereuses, lorsqu’ils sont
connectés à la tension secteur. Les activités
d’installation, d’utilisation et d’entretien
de cet équipement doivent être effectuées
par un personnel qualifié, dûment formé et
habilité.
• Installation of the soft start must be made in
accordance with existing local and national
electrical codes and regulations and have a
minimum protection rating.
• Le démarreur progressif doit être installer
conformément au code local et nationale
d’électricité et à la réglementation en vigueur,
et il doit avoir un indice de protection
minimal.
• It is the responsibility of the installer to
provide suitable grounding and branch circuit
protection in accordance with local electrical
safety codes.
• Il appartient à l’installeur d’assurer la mise
à la terre et la protection du circuit de
branchement, conformément au code de
sécurité électrique local.
• This soft starter contains no serviceable or
re-usable parts (other than cooling fans and
external communication options).
• Ce démarreur progressif ne contient pas de
pièces réparables ou réutilisables.
• The STOP function of the soft starter does not
isolate dangerous voltages from the output
of the soft start. An approved electrical
isolation device must be used to disconnect
the soft start from the incoming supply
before accessing electrical connections.
• La fonction STOP du démarreur progressif
n’isole pas les tension dangereuses en sortie
du démarreur progressif. Avant d’accéder
aux raccordement électriques, il faut utiliser
un dispositif d’isolation électrique approuvé
pour déconnecter le démarreur progressif de
la tension d’entrée.
1L1 3L2 5L3
2T1 4T2 6T3
M
3 ~
warnIng: the sr55 soft starter Does
not Isolate IncomIng Voltage.
a separate IsolatIon DeVIce
(contactor) must be supplIeD aheaD of
the soft starter.

SR55 Quick-Start Guide
1st Ed., Rev.E – 02/02/2017 – Stellar®SR55 Soft Starter Quick-Start Guide 5
Environmental – Installation


Weight 6.6 lb [3.0 kg]


Distance
Top 3in
[75mm]
Bottom
Left 1in
[25mm]
Right
Front
Mount soft starter within 30° of vertical

Weight 7.7 lb [3.5 kg]


Distance
Top 3in
[75mm]
Bottom
Left 1in
[25mm]
Right
Front
Mount soft starter within 30° of vertical

6
SR55 Quick-Start Guide
Stellar® SR55 Soft Starter Quick-Start Guide – 1st Ed., Rev.E – 02/02/2017



Weight 12.1 lb [5.5 kg]


Distance
Top 3.9 in [100mm]
Bottom
Left 1.6 in [40mm]
Right
Front 1in [25mm]
Mount soft starter within 30° of vertical

Weight 14.3 lb [6.5 kg]


Distance
Top 3.9 in [100mm]
Bottom
Left 1.6 in [40mm]
Right
Front 1in [25mm]
Mount soft starter within 30° of vertical

SR55 Quick-Start Guide
1st Ed., Rev.E – 02/02/2017 – Stellar®SR55 Soft Starter Quick-Start Guide 7



Weight 35.3 lb [16.0 kg]


Distance
Top 4.9 in
[125mm]
Bottom
Left 2.4 in
[60mm]
Right
Front 1in [25mm]

Weight 46.7 lb [21.2 kg]


Distance
Top 4.9 in
[125mm]
Bottom
Left 2.4 in
[60mm]
Right
Front 1in [25mm]

8
SR55 Quick-Start Guide
Stellar® SR55 Soft Starter Quick-Start Guide – 1st Ed., Rev.E – 02/02/2017

enclosure VentIlatIon
when fIttIng sr55 Into an enclosure, VentIlatIon must be proVIDeD If the heat output
of the unIt Is greater than the enclosure wIll DIssIpate. use the followIng formula to
DetermIne the fan requIrement. anallowance has been IncorporateD Into the formula so
that the fIgure for q Is the aIr DelIVery In the fan supplIers Data.
the maxImum power DIssIpatIon occurs DurIng energy saVIng. heat DIssIpateD can be
approxImateD wIth the formula:
watts (sr55) = 1/2 x(sr55 current ratIng) x3
VentIlatIon IntérIeure
lorsque sr55 est Installé Dans une armoIre, Il faut assurer sa VentIlatIon, sI la chaleur
proDuIte De l’unIté est plus Important que la capacIté De DIssIpatIon De l’armoIre.
utIlIser la formule suIVante pour DétermIner la DemanDe De VentIlateur. une tolérence
aété Incorporé Dans la formule, aInsI la fIgure Donnée Dans q est le DébIt D’aIr InDIqué
Dans les Données Du fournIsseur Du VentIlateur. lapuIssance maxImale De DIssIpatIon est
atteInt en moDe économIe D’énergIe. lachaleur DIssIpée peut être estImée par la formule
suIVante:
watts (sr55) = 1/2 x(courant nomInal sr55) x3
Q = (4xWt) / (Tmax - Tamb)
Q = Volume of air (cubic meters per hour - m3/h)
Wt= Heat produced by the unit and all other heat sources within the enclosure (Watts)
Tmax = Maximum permissible temperature within the enclosure
(50°C for a fully rated SR55)
Tamb = Temperature of the air entering the enclosure (°C)
(If you prefer to work in CFM, substitute °F for °C. Q is now in CFM)
Q = quantité d’air (mètre cube par heure – m3/h)
Wt = Chaleur produite par l’unité et toutes autres sources de chaleur dans l’armoire (Watts)
Tmax = Température maximale admissible dans l’armoire
(50°C pour SR55 en puissance maximale)
Tamb = Température de l’air entrant dans l’armoire (°C)
(Pour calculer en CFM, remplacer °C par °F. Ainsi Q est en CFM.

SR55 Quick-Start Guide
1st Ed., Rev.E – 02/02/2017 – Stellar®SR55 Soft Starter Quick-Start Guide 9
Wiring Connection
 
mable Default Description s
 Description Default 
mable 
 – – – Group 1 input common D1COM
D1-1I D1-2I D2COM D2-1I PTC+ PTC–
N L
11 12 24 33 34 44
AO
ACOM
AI
0VDC
24VDC
Vac
group 1 relay common – – – 
 SEE TABLE 1 , Ucyes start / stop opto-coupled input relay N/C fault yes 230VAC 1A AC15;
30VDC 0.5A Resistive 
 SEE TABLE 1 , Ucyes none opto-coupled input relay N/O fault yes 230VAC 1A AC15;
30VDC 0.5A Resistive 
 – – – Group 2 input common group 2 relay common – – –   SEE TABLE 1 , Ucyes reset opto-coupled input relay N/O running yes 230VAC 1A AC15;
30VDC 0.5A Resistive 
– – – not used relay N/O end of start yes 230VAC 1A AC15;
30VDC 0.5A Resistive 
3 x PTC in series (130°C) – OFF thermistor analog output 0–10V yes 0 to 10V 10mA / 4-20mA  3 x PTC in series (130°C) – OFF thermistor analog 0V – – 0V  – – – signal ground analog input 0–10V yes 0 to 10V 10mA / 4-20mA 
 SEE TABLE 1 , Us– – control supply control supply – – SEE TABLE 1 , Us
 SEE TABLE 1 , Us– – control supply control supply – – SEE TABLE 1 , Us
24VDC Specification: 24VDC 60W; Residual ripple 100mV; Spikes/switching Peaks 240mV; Turn On/Off response; No overshoot of Vout; Overvoltage voltage protection output voltage must be clamped to <30Vdc SR55-017 to SR55-361 Control Power Consumption 60W SR55-414 to SR55-477 Control Power Consumption 120W   s c  SR55-017 to SR55-361 110 – 230 Vac or 24 Vdc 110Vac or 230Vac or 24Vdc.
230Vac factory default. #4 230Vac défaut d’usine. #4
The system can have either a 110/230Vac mains or 24Vdc input NOT both. Le système peut avoir soit une alimentation principale de 110/230 Vac ou de 24 Vdc, mais en aucun cas les deux simultanement.
SR55-414 to SR55-477 110 Vac

 The programmed digital input setting on D1COM, D1-1I, D1-2I must correspond to the voltage applied to these terminals to avoid risk of damage to the equipment.
Afin d’éviter d’endommager l’équipement, le réglage de l’entrée numérique programmé sur D1COM, D1-1I, D1-2I doit correspondre à la tension appliquée à ces bornes.
 The programmed digital input setting on D2COM, D2-1I must correspond to the voltage applied to these terminals to avoid risk of damage to the equipment.
Afin d’éviter d’endommager l’équipement, le réglage de l’entrée numérique programmé sur D2COM, D2-11 doit correspondre à la tension appliquée à ces bornes.

The control supply can be 110 to 230VAC applied to the N, L terminals or 24VDC applied to the 0VDC, 24V input terminals. The correct voltage as specified must only be applied to one of these supply inputs to avoid risk of damage to the equipment. L’alimentation contrôle peut être 110 à 230 VCA, appliquée aux bornes N et L, ou 24 VCC, appliquée aux bornes d’entrée de 0 VCC, 24 V. Afin d’éviter d’endommager l’équipement, la tension appropriée selon les indications ne doit être appliquée qu’à une entrée d’alimentation.
 Refer to SR55 Programming Manual SR55-M-WO for factory default settings.
Référer au la Manuel de Utilisateur SR55 SR55-M-WO pour des paramètres par défaut d’usine.

10
SR55 Quick-Start Guide
Stellar® SR55 Soft Starter Quick-Start Guide – 1st Ed., Rev.E – 02/02/2017

In Line
Induction
Motor
In Delta
Induction
Motor
U1
U2
V2 W2
V1 W1
Term Fwd Rev
2/T1 U1 U1
4/T2 V1 W1
6/T3 W1 V1
1/L1 W2 V2
3/L2 U2 U2
5/L3 V2 W2
So starter
must be
grounded
K1 – Main contactor or
circuit breaker isolation
and protection switch gear
(provided by the customer)
K1 – Main contactor
and protection switch gear
(provided by the customer)
Circuit breaker isolation
alone is not allowed for
In-Delta operation.
K1 (Main contactor)
controlled by the Run
relay on the SR55 MUST
be used for isolation.
NOTE:

RJ12 serial
comm port

Control wiring
terminals behind
hinged front cover

Optional
EtherNet/IP
comm module
slot

RJ45 port
(future use)
For suitable short
circuit protection
devices (SCPDs),
see Short Circuit
Protection in the
Technical Information
/ Standards section of
this guide.
Pour un dispositif
de protection
approprié contre le
court-circuit, voir la
protection contre le
court-circuit dans la
section « Informations
techniques / normes »
du présent guide.
For wire size and
torque requirements,
see Technical
Information / Standards
section of this guide.
Pour les dimensions
de câble et les besoins
en couple, voir la
section « Informations
techniques / normes »
du présent guide.
In Delta
For this configuration
applying the equation.
SR55 Ie=
Ie (motor) / √3
Allows lower current
rated SR55 than the
motor.
When In-Delta
configuration is
used, a line contactor
controlled by the SR55
MUST be used with
the In-Delta Firing
Mode selected in the
advanced menu.
En Delta
Pour cette
configuration,
appliquer l’équation.
suivante : SR55 Ie =
Ie (moteur) / √3
Cela permet le courant
nominal inférieur de
SR55 par rapport au
moteur.
Lorsque En Delta
configuration est
utilisée, IL FAUT
utiliser un sectionneur
principal contrôlé par
SR55, En Delta mode
de fonctionnement,
sélectionné dans le
menu avancé.

SR55 Quick-Start Guide
1st Ed., Rev.E – 02/02/2017 – Stellar®SR55 Soft Starter Quick-Start Guide 11

24
VDC D1-2ID1-1I D2-1I 33
0VDC D2COMD1COM 34
K1
!
L D1-2ID1-1I D2-1I 33
N D2COMD1COM 34
K1
!
110/230Vac
N
24Vdc
0Vdc
Emergency StopEmergency Stop
3-Wire Control Diagram
24Vdc control supply (Us)and
digital input (Uc)programming
(only applicable for SR55-017 to SR55-361)
3-Wire Control Diagram
110/230Vac control supply (Us)
and digital input (Uc) programming

Programming
D1-1I = Start
D1-2I = Stop
D2-1I = Reset
refer to table 1 on page 9 for Input control Voltages. these recommenDeD
wIrIng DIagrams are specIfIcally where the control supply Voltage (us) Is IDentIcal
to the control cIrcuIt Voltage (uc), anD not to be supplIeD separately. other wIrIng
confIguratIons must also be In accorDance wIth exIstIng local anD natIonal coDes anD
regulatIons.
référer au tableu 1 àla page 9 pour Des tensIons De contrôle D’entrée. ces
schémas De câblage sont recommanDées spécIfIquement lorsque la tensIon D’alImentatIon
De commanDe (us) est IDentIque àla tensIon Du cIrcuIt De commanDe (uc). uset ucne
DoIVent pas être alImentés séparément. toutes les confIguratIons De câblage DoIVent
également être en conformIté aVec les coDes et les règlements locaux et natIonaux en
VIgueur.
power factor correctIon capacItors* must not be posItIoneD between the soft starter
anD the motor, or there Is arIsk of DamagIng the thyrIstors Due to current peaks.
les conDensateurs D’amélIoratIon Du facteur DepuIssance ne DoIVent pas être montés
entre le Démarreur progressIf et le moteur, parce que les poIntes De courant rIsquent à
enDommager les thyrIstors.
LD1-1I
Stop
Start
D2-1I 33
ND2COMD1COM 34
K1K2
K2.1
K2.2
1)
!
24
VDC
0VDC
D1-1I
Stop
Start
D2-1I 33
D2COMD1COM 34
K1K2
K2.1
K2.2 1)
!
110/230Vac 24Vdc
0Vdc
N
Emergency StopEmergency Stop
110/230Vac (Us) and (Uc) user
programmable control diagram
24Vdc (Us) and (Uc) user programmable control
diagram (only applicable for SR55-017 to SR55-361)


D1-1I = High Start / Low Stop
D1-2I = None
D2-1I = High Reset
1) Optional high reset. If this reset is required, ensure “User
Programmable” is selected in the control method menu found
in the Digital Inputs menu. If you would prefer the reset to
work by removing and reapplying the Start Signal on D1-1I
then select “Two wire control” in the control method menu.
*Note: Power factor correction capacitors (PFCs)
in some cases can reduce a facility’s kVAR charges. Determining the
need for, and location of, PFCs should be performed by a qualified
engineer (from your utility company or a power quality engineering
firm). PFCs cannot be located between the SR55 and the motor.

12
SR55 Quick-Start Guide
Stellar® SR55 Soft Starter Quick-Start Guide – 1st Ed., Rev.E – 02/02/2017
Programs
1.
3.
5.
7.
6.
8.
2.
4.
Please note:
“Setup Wizard” screen #1
appears only once; on the
initial power-up of the SR55
soft starter. Screen #8 will
be the first screen displayed
for subsequent start-ups.
Press “Home,” and then
“Auto Setup” to access
screen #2.
OK
ଯ
Back Next
Compressor
Reciprocating
Centrifugal
Select Your Application
Warning!
Selected Application Will
Enable Trip Class 20
NoBack Yes
Motor Current:
Application:
Control Logic:
Digital Input Voltage:
Trip Class:
17A
Compressor
Local Touch Screen
24Vdc
20
Auto Setup Summary
Save?
Back Next
Select Control Method
Local Touch Screen
Two Wire Control
User Programmable
Modbus Network
Three Wire Control
Please note:
Only appears if
application with
a trip class higher
than 10 is selected
ଯ
Back Next
ଭ
Default
Compressor
Centrifugal
Agitator
Heavy
Compressor
Reciprocating
Select Your Application
A
Back Next
17
++
Set Motor Current Rating
--
HomeBack Start
Stopped
OL =
I =
P =
0%
0A
0kW
–
Back Next
230V
24VDC
110V
Select Digital Input Voltage
Auto
Advanced
Setup Wizard

SR55 Quick-Start Guide
1st Ed., Rev.E – 02/02/2017 – Stellar®SR55 Soft Starter Quick-Start Guide 13
Ratings Table
SR55 Soft Starter Electrical Ratings
Frame
   

e

 
(control
supply
voltage)
  


  
1
SR55-017 17 3 5 5 10 17 4 7.5
24VDC
or
110VAC
to
230VAC
SR55-021 21 5 5 5 15 22 5.5 11
SR55-027 27 7.5 7.5 7.5 20 29 7.5 15
SR55-034 34 10 10 10 25 35 7.5 18.5
SR55-040 40 10 10 10 30 41 11 22
SR55-052 52 15 15 15 40 55 15 30
SR55-065 65 20 20 20 50 66 18.5 37
SR55-077 77 20 25 25 60 80 22 45
SR55-096 96 30 30 30 75 100 30 55
2
SR55-124 124 40 40 40 100 132 37 75
SR55-156 156 50 50 60 125 160 45 90
SR55-180 180 60 60 60 150 195 55 110
3
SR55-242 242 75 75 75 200 242 75 132
SR55-302 302 100 100 100 250 302 90 160
SR55-361 361 125 125 150 300 361 110 200
SR55-414 414 150 150 150 350 430 132 250 110VAC
SR55-477 477 150 150 150 400 500 150 280
1) Rated operational powers in hp according to UL508 corresponding to FLA current rating.
2) Rated operational powers in kW according to IEC 60072-1 (primary series) corresponding to
IEC current rating.
3) The UL FLA rating applies for a maximum surrounding air temperature of 50°C [122°F].
4) The IEC Ierating will apply for EN 60947-4-2 max rating index up to 195A: AC-53a: 3.5-17:
90-5 and 242A–500A: AC-53a: 3.5-17: 90-3.

14
SR55 Quick-Start Guide
Stellar® SR55 Soft Starter Quick-Start Guide – 1st Ed., Rev.E – 02/02/2017
Technical Information

Trip time ( seconds )
Multiple of Motor FLA
Motor overload 'cold' trip curves
(20°C ambient)

SR55 Quick-Start Guide
1st Ed., Rev.E – 02/02/2017 – Stellar®SR55 Soft Starter Quick-Start Guide 15
Technical Information/Standards
SR55 Technical Information and Standards
 e200VAC to 480VAC
 IeSee model ratings table
 SR55-017 to -180 Ie: AC-53a: 3.5-17: 90-5
SR55-242 to -477 Ie: AC-53a: 3.5-17: 90-3
 50 to 60Hz
 Uninterrupted
 Form 1 internally bypassed
 i480V

 imp
Main circuit 4kV
Control supply circuit 2.5 kV

Main AC
line/load circuit
IP00
(IP20 for frame sizes 1&2
only with optional finger
guards SR55-FG-x)
Supply and control
circuit IP20
 2



Type 1 co-ordination. See short circuit protection
table for rated conditional short-circuit current and
required current rating and characteristics of the
associated SCPD.

 C
24VDC, 110VAC or
230VAC
Protect with 4A UL Listed
fuse
 
See Rating table, 2 Amp
supply (continuous).
 AC-15 230VAC, 1A
DC-13 30VDC, 0.7A
  Class A 1)

 8kV/air discharge or 4kV/contact discharge
 10 V/m
 2kV/5kHz (main power and ports)
1kV/5kHz (signal ports)
 2kV line-to-ground
1kV line-to-line
 10V
 Max. 85% non-condensing, not exceeding 50% at 40°C
1) NOTICE: This product has been designed for environment A. Use of this product in environment B may cause unwanted
electromagnetic disturbances, in which case the user may be required to take adequate mitigation measures.

16
SR55 Quick-Start Guide
Stellar® SR55 Soft Starter Quick-Start Guide – 1st Ed., Rev.E – 02/02/2017
Standards

-4°F (-20°C) to 122°F (50°C); above 50°C derate linearly by 4% of SR55 Ieper °C to a
maximum of 140°F (60°C).

Maximum altitude above sea level: 1000m (3281ft); above 1000m derate by 1% of SR55 Ie
per 100m (328ft) to a maximum altitude of 2000m (6562ft).

All SR55 models are CE, REACH, and RoHS compliant, and are listed to UL508. SR55
models -017 through -477 bear the ETL listing mark, and are ETL UL508 and CSA C22.2 No.
14 listed to U.S. and Canadian safety standards respectively.

Wire Sizes and Torques
   
mm  




  2.5–70 12–2/0 9 80
 4–185 12–350 MCM
14 123
  2 x 95 2 x 2/0
 2 x 150 2 x 350 MCM
  0.2–1.5 24–16 0.5 4.5





 ≥ 4 ≥ 12
8 70
 ≥ 6 ≥ 10
 ≥ 10 ≥ 8

 ≥ 16 ≥ 6
12 105
 ≥ 25 ≥ 4
 ≥ 35 ≥ 3
 ≥ 35 ≥ 2
1) Protective Ground wire size based on bonding conductor requirements of UL508 and UL508A and CSA C22.No.14.

SR55 Quick-Start Guide
1st Ed., Rev.E – 02/02/2017 – Stellar®SR55 Soft Starter Quick-Start Guide 17

SR55 Short-Circuit Protection
 



















Current
Ie 17 22 29 35 41 55 66 80 100

  
 30 40 50 60 70 100 125 150 175




Mersen 6,9 URD 30xx
Bussmann 170M30xx
Bussmann 170M31xx
Bussmann 170M32xx
SIBA 20 61xx
  100 100 160 160 160 200 200 250 315




 60 60 60 60 60 150 150 250 300



Current
I 55555551010
 














 


Current
Ie 132 160 195 242 302 361 430 500
–

  
 225 300 350 450 500 500 600 600




Mersen 6,9 URD 31xx
Bussmann 170M40xx
Bussmann 170M41xx
Bussmann 170M42xx
SIBA 20 61xx
Mersen 6,9 URD 33xx
Bussmann 170M60xx
Bussmann 170M61xx
Bussmann 170M62xx
SIBA 20 63xx
  400 550 550 700 800 900 1000 1100




 350 450 500 700 800 1000 1000 1000



Current
I 10 10 10 18 18 18 18 18
#1 Suitable for use in a circuit capable of delivering not more than Iqrms Symmetrical Amperes,
480 Volts maximum, when protected by Class J time delay fuses with a maximum rating of Z1,
or by a circuit breaker with a maximum rating of Z2 as in this table.
#2 Correctly selected semiconductor fuses can provide additional protection against damage to the
SR55 unit (this is sometimes referred to as type 2 co-ordination). These semiconductor fuses are
recommended to provide this increased protection.

18
SR55 Quick-Start Guide
Stellar® SR55 Soft Starter Quick-Start Guide – 1st Ed., Rev.E – 02/02/2017
BLANK
PAG E

SR55 Quick-Start Guide
1st Ed., Rev.E – 02/02/2017 – Stellar®SR55 Soft Starter Quick-Start Guide 19
Notes

20
SR55 Quick-Start Guide
Stellar® SR55 Soft Starter Quick-Start Guide – 1st Ed., Rev.E – 02/02/2017
Quick-Start Guide
Electric current! Danger to life!
Only skilled or instructed persons may carry out the operations.
Tension électrique dangereuse!
Seules les personnes qualifiées et averties doivent exécuter les travaux ci-après.
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