3RW3018-1BB14 SIEMENS, 3RW3018-1BB14 Datasheet - Page 9

• Manufacturer Part Number: 3RW3018-1BB14
• Description: SIRIUS SOFTSTARTER, S00, 17.6A, 7.5KW
• Manufacturer: SIEMENS

Specifications of 3RW3018-1BB14

• Supply Voltage Range: 200Vac To 480Vac
• No. Of Phases: Three
• Power Rating: 7.5kW
• Current Rating: 17.6A
• Operating Temperature Range: -25°C To +60°C
• Approval Bodies: CE, IEC, UL, CSA
• Control: RoHS Compliant

Overview
The SIRIUS 3RW30 soft starters reduce the motor voltage
through variable phase control and increase it in ramp-like mode
from a selectable starting voltage up to mains voltage. During
starting, these devices limit the torque as well as the current and
prevent the shocks which arise during direct starts or wye-delta
starts. In this way, mechanical loads and mains voltage dips can
be reliably reduced.
Soft starting reduces the stress on the connected equipment
and results in lower wear and therefore longer periods of trouble-
free production. The selectable start value means that the soft
starters can be adjusted individually to the requirements of the
application in question and unlike wye-delta starters are not
restricted to two-stage starting with fixed voltage ratios.
The SIRIUS 3RW30 soft starters are characterized above all by
their small space requirements. Integrated bypass contacts
mean that no power loss has to be taken into the bargain at the
power semiconductors (thyristors) after the motor has started
up. This cuts down on heat losses, enabling a more compact
design and making external bypass circuits superfluous.
Various versions of the SIRIUS 3RW30 soft starters are available:
• Standard version for fixed-speed three-phase motors, sizes
• Version for fixed-speed three-phase motors in a 22.5 mm
Soft starters rated up to 55 kW (at 400 V) for standard
applications in three-phase networks are available. Extremely
small sizes, low power losses and simple start-up are just three
of the many advantages of this soft starter.
S00, S0, S2 and S3, with integrated bypass contact system
enclosure without bypass
© Siemens AG 2008
Application
The 3RW30 soft starters are suitable for soft starting of three-
phase asynchronous motors.
Due to two-phase control, the current is kept at minimum values
in all three phases throughout the entire starting time. Due
to continuous voltage influencing, current and torque peaks,
which are unavoidable in the case of wye-delta starters, for
instance, do not occur.
Application areas
• Pumps
• Heat pumps
• Hydraulic pumps
• Presses
• Conveyors
• Roller conveyors
• Screw conveyors
Siemens LV 1 N SIRIUS Soft Starters · 01/2008
3RW Soft Starters
for standard applications
3RW30
6/3