Starting Methods - WEG ODP Instrucciones Para La Instalacion Y Mantenimiento

Voltage may be connected at motor
~
standstill inside the terminal box for
heating elements or direct winding
heating.
The capacitor on single-phase
motors can retain a charge which
~
appears across the motor terminals,
even when the motor has reached
standstill condition. So, avoid
touching them at such condition.
a
wrong connecTion can
burn ouT The moTor
Voltage and connection are indicated on the
motor nameplate according to IEC 60034-1.
The acceptable voltage variation is ±5% and
the acceptable frequency variation is ±2%,
according Zone A - IEC
60034-1 Standard.
Note: For rated voltage range (multivoltage),
the acceptable variation is ± 5%.

4.9 - Starting Methods

The motor is rather started through direct
starting. In case this is not possible, use
compatible start methods to the motor load
and voltage.
When applying reduced voltage starting me-
thod, remember that the starting torque will
also reduce.
Possible motor Connections:
 3 leads single voltage and 9 leads dual vol-
tage motors can be started as follows:
- Full Voltage Direct online
- Auto-Transformer starting
- Electronic Soft-Starting
- VFD Starting – subject to verification and
application analysis.
- Series - Parallel starting (only for 9 leads)
 6 leads single and dual voltage motors
and 12 leads dual voltage motors can be
connected as follows:
- Full Voltage Direct online
- WYE/DELTA starting
- Auto-Transformer starting
- Electronic Soft-Starting
- VFD Starting – subject to verification and
application analysis.
- Series - Parallel starting (only for 12 leads)
Rotation direction is clockwise when motor is
viewed from Drive Endshield side and if the
phases are connected according to sequence
L1, L2, L3. This phase sequence and power
system must be positive.
To change the rotation direction, reverse two
of the connecting leads.
Note: For single-phase motor connections,
please check the motor nameplate.
.
4.10 – Protection Device
When the motor is supplied with protective
or monitor
as thermostats,
protector etc, connect their terminals to the
corresponding devices on the control panel.
If this procedure is not followed accordingly,
warranty will be void.
Do not change protection devices settings as
they may not operate.
9
T
he connecTion To The power
supply musT be done by qualified
personnel and wiTh full aTTenTion
To assure safe and permanenT
.
connecTion afTer connecTing The
,
moTor check for any sTrange
body inside The Terminal box
cable inleTs noT in use musT be
.
closed
b
efore energizing The Terminals
check if The grounding is made
according To The applicable
.
sTandards This is essenTial To
.
avoid accidenTs
temperature
thermistors,
Protection Device Diagram
Overtemperature
Protected motor
with thermostats
L1 L2 L3
Stop switch
RATED
VOLTAGE(V)
110-120
3x
220-240
440-480
550-600
THERMOSTATS LEADS
.
The
,
device such
thermal
CURRENT
(A)
3.00
1.50
0.75
0.60