Xylem SSW-07 Soft-Starter - Manual (Page 21)

CHAPTER 3 - INSTALLATION AND CONNECTION
20
English
3.2.5 Soft-Starter
SSW-07
Connection to
the Motor
NOTE!
The maximum I 2 t of the SSW-07 255 A fuse is smaller than 200 A
because of the thyristor constructive type used on this soft-starter.
When the SSW-07 is used in applications that require an isolator
contactor, according to the figure 3.10 (K1), the use of WEG
contactors is recommended.
SSW-07 Model WEG Contactor
17 A CWM18
24 A CWM25
30 A CWM32
45 A CWM50
61 A CWM65
85 A CWM95
130 A CWM150
171 A CWM180
200 A CWM250
255 A CWM250
312 A CWM300
365 A CWME400
412 A CWME400
table 3.8 - Recommended contactors
DANGER!
Power factor correction capacitors must never be installed at the
output of the Soft-Starter SSW-07. (U / 2T1, V / 4T2 and W / 6T3).
ATTENTION!
To ensure that the protections based on the current reading and
display operate correctly, for example the overload, the motor
nominal current must not be lower than 50 % of the nominal Soft-
Starter SSW-07 current.
NOTE!
Use the wire sizes and fuses recommended in tables 3.5, 3.6 and
3.7. The connector tightening torque is indicated in table 3.4. Use
only copper wires.
NOTE!
The Soft-Starter SSW-07 is provided with electronic protection
against motor overload. This protection must be set according to
the specific motor. When several motors are connected to the same
Soft-Starter SSW-07 use individual overload relays for each motor.
3.2.4.3 Recommended
Contactors