Cutler Hammer, Div of Eaton Corp S751 General Product Line Information
January 2003
Reduced Voltage Motor Starters
Solid-State Reduced Voltage Starters
Open Soft Starters — Intelligent Technologies (IT.) S751
G-23
Contents
Description Page
S751 Open Soft Starters
Product Description . . . . . .
Application Description. . .
Features . . . . . . . . . . . . . . .
Benefits. . . . . . . . . . . . . . . .
Standards and
Certifications . . . . . . . . . .
Technical Data . . . . . . . . . .
Auxiliary Contacts . . . . . . .
Approximate
Dimensions . . . . . . . . . . .
Product Selection. . . . . . . .
G-23
G-23
G-23
G-23
G-23
G-24
G-25
G-25
G-26
S751 Open Soft Starters
S751
Product Description
The Cutler-Hammer Intelligent
Technologies (
Reduced Voltage Soft Starters by
Eaton Corporation is very compact,
multi-functional, easy to install and
easy to program. Designed to control
acceleration and deceleration of
3-phase motors, the Line is available
for current ranges from .25 to 27 amps.
The S751 is suitable for mounting in
motor control centers or in enclosed
control (NEMA 1, 4, 4X and 12)
applications.
The S751 is also designed to be a
complete package combining the SCR
devices, bypass contactor and overload in one, very compact package.
The S751 comes complete with everything needed to set up and program
the soft starter.
IT.
) S751 Line of
Application Description
Designed to be the smallest, most
compact soft starter in the world
today, the S751 is designed to fit in
place of your existing soft starter or
across-the-line NEMA or IEC starter
today. Designed to work with 3-phase
motors from 200 – 600V AC, the S751
combines the overload and bypass
contactor into one package for fast
and easy installation. The unit also
provides all necessary overload
protection for the motor. The built-in
bypass contactor ensures a minimal
amount of heating internal to the
enclosure. The unit provides for
smooth starting and stopping of
motors to reduce both mechanical
and electrical shock to the system.
Short circuit protection can be
provided by fuses.
Features
■
Built-in overload protection
(30 – 100% adjustment)
■
Built-in bypass contactor for
minimal heat generation
■
Adjustable ramp times
(.5 – 30 secs)
■
Adjustable internal torque (0 – 95%)
■
Adjustable deceleration times
(0 – 30 secs)
■
Seven segment digital display
■
Multiple trip class settings
(10, 20 and 30)
■
Six SCR control
Physically fits in places of most
■
NEMA and IEC starters
Rated operational voltage 200 –
■
600V AC
Selectable phase loss/unbalance
■
protection
Benefits
Reduced wear on belts, gears
■
chains, clutches, shafts and
bearings
Allows for controlling the inrush
■
current to the motor
Reduced water-hammer in pump-
■
ing applications
Less shock to product on connector
■
lines and material handling gear
24V DC control enhances personnel
■
and equipment safety
All-in-one design reduces number of
■
components and makes installation
simpler and faster
Standards and Certifications
IEC 947 Compliant
■
■
EN 60947-4-2
■
CE marked
■
CSA Certified
■
UL Listed
G
Loading...