Siemens Automatic Star-Delta 3TE05 2AR0 Series User manual

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Operating Instructions
Automatic Star-Delta Starter
Extended Range (75kW-132kW)
3TE05..-2AR0
IS/IEC 60947-4-1
Technical Data
Enclosed Automatic Star delta Starter which is the
combination of 3TF Contactors, 3UA relay and 3RP Timer with
no derating upto +55°C, provides overload, single phasing
protection for three phase motors and IP54 for Enclosure.
1. OperatingVoltage‒415V ac
2. RatedInsulationVoltage‒
Main circuit : 690V
Auxiliary circuit : 690V
3. RatedImpulseVoltage‒
Main circuit : 8kV
Auxiliary circuit : 6kV
4. CoilVoltage‒415V ac
5. Permissibleambienttemperature‒
Operation : -5 to 40 °C
Temperature compensation : Upto 40 °C
6. Frequency‒50 Hz
7. IPProtection‒IP 54
8. CableincomingfromSupply‒
Top & Bottom both provisions
9. CableoutgoingtoMotor‒Bottom
10.Locking‒Middle lock with key
Rating MLFB
75kW 3TE05 94-2AR0
90kW 3TE05 95-2AR0
110kW 3TE05 96-2AR0
132kW 3TE05 97-2AR0
Installation
1. Enclosed Starter 3TE05 are Wall mounting type. Care
should be taken to avoid shocks and prolonged vibrations.
2. Refergure8forthemountingdimensionsandgure4
for permissible mounted angle.
3. "Mount on a plane surface by 4 x M10 bolts/studs,
secured by nuts with plain and spring washers."
4. Depending upon location of incoming and outgoing
cables remove corresponding rubber Grommets. Ensure
dust-proongbyusingpropercableglands.
5 SelectCorrectSizeofCablesasspeciedinselection
Table 1. Remove required length of insulation and using
thehardwarespecied(refertable2)attheconnection
terminals,xtheincomingandoutgoingcables.Tighten
thescrewsrmly.
6 Check that line and motor connections are done as per
wiringdiagram(Figure7)whichisalsopastedinsidethe
door.
7 Remove any wire cutting fallen into the Starter.
8 Connect Earthing conductor to terminals marked
Please read and understand these instructions before
installating, operating, or maintaining the equipment.
Keep for future reference
Danger
Hazardous voltage can cause death or serious injury.
Disconnect power before working on equipment.
Warning
Automatic Motor Restart.
Can cause death, serious injury or property damage.
Do not use automatic reset mode when unexpected automatic
restart of the motor can cause injury to persons or damage to
equipment.
Reliable functioning of the equipment is only ensured with
certiedcomponents.Commissioningandmaintenanceby
qualiedpersonnelonly.
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 require to take adequate mitigation
measures.

Commissioning
1. Open the door by unlocking the
locks
2. Before switching ON, re-check
external connections.
3. Set Overload relay to 0.58 times the
rated motor current.
4. Set the dial of the Timer to an
approx. value of starting time of
Motor(preferablymorethan6secs)
A. Star-delta Timer setting
1. First Start the motor by pressing
Green push button, marked "I"
2. Measure time taken for it to reach
nearly rated speed or steady state
current(indicatedwhenmotorhum
reachesasteadypitch)
3. Stop the Motor, set Timer to this
measured value, by rotating the
Timer dial.
B. Relay Settings
1. For Closer protection set the
Overload Relay to the phase current
as measured by an ammeter.
2. In absence of Ammeter, use
procedure as given below:
a) Startthemotorandletitrun
for half an hour. Then gradually
reduce relay setting till it trips.
Set Relay at a slightly higher
value of this setting.
b) Allowresettimeofapprox.4
min. Press the blue knob on the
relay completely to reset the
relay.
c) Re-startmotoraftersome
time. If the relay does not trip,
consider it to be properly set. If it
trips follow step b with setting at
little higher value and recheck.
d) Overloadrelaycharacteristics
given below can be used to
estimate the average tripping
time at different multiples of set
current.
Caution:
1. Switch OFF the Starter, and
disconnect the main supply by
switching OFF the main switch
before doing any maintenance.
2. Under No Circumstances should
the Relay be set higher than phase
current i.e.. 0.58 times the rated
current on the motor nameplate.
3. If the Relay trip even when set
at the rated Motor current, the
suitability of the starter or relay for
the particular application should be
checked with the nearest Siemens
ofce.
4. Refer Table 1 for the Motor current
corresponding to the Motor rating.
Figure 2: Timer Adjustment
Figure 3: Relay setting Adjustment Figure 4: Maximum permissible angle from
vertical plane
Table 1: Technical Details
Motor Rating
at 415V, 3ph,
50Hz
Motor Current "Type
(ASD)" Contactor Contactor Birelay
(Inbuilt)
Recommend-
ed Max.
Back-up HRC
Fuse rating
SIEMENS
make type
3NA
Recommended Cu
Cable with lugs in
sq. mm
Line
current
Phase
current MLFB Delta/Main Star Incoming Outgoing
HP kW IL(A) Iph(A) 3TF 3TF Relay
Range Type From Supply To Motor
100 75 131 75.6 3TE05 94-2AR0 3TF49 3TF47 70-95A 3UA5800-8YZ1 160 50 25
125 90 156 90 3TE05 95-2AR0 3TF50 3TF47 70-95A 3UA5830-5B 160 70 35
150 110 189 109 3TE05 96-2AR0 3TF50 3TF50 95-120A 3UA5830-5D 200 95 35
180 132 227 132 3TE05 97-2AR0 3TF51 3TF50 115-180A 3UA6230-5B 250 120 50
* For Type-2 co-ordination chart, refer latest Price list of " LV switchgear - Motor control products"
2
Dial

Trip Curve
Figure 5: Operating Charateristics of 3UA5/6 Relays
Operation
1. For Starting the Motor, press Green
push button, marked "I"
2. For Stopping the Motor, press Red
push button, marked "O"
3. For Relay Reset: First switch off the
Starter, open the door and then
press blue push button, marked
"Reset", for resetting, after the relay
has tripped due to overload.
4. In case if you want the Starter in
"Self Reset" mode, the blue knob on
Relay is to be pressed and rotated
in anticlockwise direction, so that it
comes in position "A" and its edge
ushwiththerelaysurface.Inthis
mode if the relay trips on overload,
it will be automatically reset in
maximum 4 minutes.
The Motor can be restarted only
after the relay is reset.
H - Hand Reset
A - Auto Reset
Blue
Reset
Knob
Figure 6: Relay Front View
Q1 : Line Contactor
Q2 : Star Contactor
Q3 : Delta Contactor
S1 : 'ON' Push Button-I
S0 : 'OFF' Push Button-O
S4 : 'Reset'Button(ofrelay)
K1 : Bimetal Relay
Q4 : Star Delta Timer
Maintenance
1. Keep the interior dust free.
2. Check the tightening of terminal
screws time to time.
3. No Maintenance is needed for
overload relay and Timer. Do not
open them.
4. If the Contactor hums, clean the
magnet pole faces with soft cloth.
5. Replace contacts of the contactor
if they are severly pitted or when
only 40% original contact tip
remains.
6. For details of contactor maintenance
refer to - "Guide to contactor
Installation & Maintenance".
3
Figure 7: Wiring Diagram

Siemens Ltd.
DF-CP-0008
Product upgradation is a continuous process. Hence, data in
thisleaetissubjecttochangewithoutpriornotice.Forthe
latestinformation,pleasecontactoursalesOfces.
Order No. 4P-0008-0117366 301
Customer Care Toll free no. 1800 220 987 / 1800 209 0987 Email: [email protected]
PLASTICS : Segregate as per material type for recycling
through authorised dealer.
Because of the long lifetime of Siemens products the
disposal guidelines may be replaced by other national
regulations when taking the product out of service.
The local customer care service is available at any time
to answer disposal-related questions
Siemens Products are environment friendly, which
predominantly consist of recyclable materials.
For disposal we recommend disassembling and
separation into following materials:
METALS : Segregate into Ferrous & Non Ferrous types for
recycling through authorised dealer.
Disposal
Dimensional Drawings (all dimensions in mm)
3TE05..-2AR0
Table 2 : Hardware Information
kW Incoming Terminals Outgoing Terminals Tightening Torque
75 M6 M6 8-10 Nm
90 M6 M6 8-10 Nm
110 M6 M6 8-10 Nm
132 M8 M8 12-16 Nm
Spares List
Spares:
Type of Spares MLFB/Catalogue Number-Make Make
ON/OFF Actuator 3SB5201-7EC01 Siemens
Electronic Timer 3RP15 76 -1NM20 8K Siemens
Relay As per Table 1 Siemens
Lock with key MS 748-3 with Cam 12mm ArihantPanelttings
Lock without key MS 714-2 with Cam 12mm ArihantPanelttings
Figure 8: External and Mounting Dimensions
Front view