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Sprecher +
Schuh soft starters
PCS Series to 400 HP
Overview
The PCS Soft starter Controller is one of Sprecher + Schuh's newest
solid-state controllers, with rich features at an economical price.
This softstarter is specifically designed to start 3-phase motors (up
to 400HP @ 460V / 500HP @ 575V), but is very compact, easy to use and
DIN-rail mountable for models up to 85A. Four standard starting modes
are available with the PCS Controller:
- Soft Start
- Soft Start with Selectable Kick-Start
- Current Limit Starting
- Soft Start with Soft Stop
Extending the PCS Softstarter Controllers, 108...480 Amps
The PCS product offering has been expanded from 85A to 480A (up to
400HP @ 460V). The new range provides a highly accurate and reliable
device with increased intelligence in a compact footprint.
Connect to KT7 Motor Circuit Controllers for branch
circuit protection. |
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Self Contained, Ready To Install
In one small package, PCS Controllers offer a built-in overload
relay, a bypass contactor and a microprocessor controller that
provides soft starting for most industrial applications. The standard
Soft Start mode provides a smooth voltage ramp-up to full motor speed,
while the Current Limit Starting mode limits inrush in high inertia
applications. A Soft Stop feature ramps down high friction loads
smoothly, eliminating sudden deceleration in these applications.
For Use Anywhere
Sprecher Schuh PCS Softstarters come in three different frame sizes. The smallest
frame is from 3A...37A, the middle size is from 43A...85A and the
largest frame size is 108A...135A. These units are available from
200V...600V - 50/60 Hz. This assures the devices can be used anywhere
in the world.
Many convenient features
PCS Soft-starters are reliable and easy to use.
Features include:
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Digital rotary switches for precise settings
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LED indication of faults
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Built-in, programmable electronic overload
protection
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Selectable trip current
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Bypass contactors for increased life and heat
reduction
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Over temperature protection
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Protection against phase reversal, phase
imbalance, and single-phasing
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Short and open load detection
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Sprecher +
Schuh contactors
Series CA7 Contactors: to 60 HP
(Small dimensions as little as 45mm wide).
Providing Big Performance in Small Package
The CA7 represents the most modern and flexible IEC power contactor
available today. A wide selection of ten contactors in four frame
sizes covers the entire Sprecher + Schuh CA7 horsepower range (up to 60HP @ 460/575V).
Six of the contactors are only 45mm wide, an extremely small footprint
for such rugged performance.
Advanced safety and reliability features
The entire CA7 line features mechanically linked contacts, such
that if a main power pole welds, adequate clearances exist (greater
than or equal to 0.3mm) to ensure that the auxiliary contacts do not
change state when coil power is removed and the device tries to open.
This is a requirement in safety circuits.
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Reversible coil provides total flexibility
When shipped, both coil connections are normally located at the top
of the contactor in preparation for mounting an overload relay at the
bottom. For multi-starter panels, however, the coil can be reversed.
CA7 contactors can either be ordered with the coil reversed or may be
easily reversed in the field.
Dual power terminals speed wiring
CA7-30 through 85 contactors are designed with two power terminals
for all three poles. This simplifies power wiring of interconnected
contactors in reversing, reduced voltage and two-speed applications.
Simplified wiring means less labor and less cost.
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| CT7N Bimetallic Thermal Overload Relays
Ensure reliable protection with current-limiting calibration &
ambient temperature compensation.
Sprecher + Schuh has always paid particular attention to the
subject of motor protection. This concern is reflected in our CT line
of thermal overload relays that include many standard features not
available with traditional overload protection devices. And, CT7N
overload relays are designed to mount directly to the load side of
Sprecher + Schuh CA7 Contactors.
Consistent and reliable protection
The consistent high quality of Sprecher + Schuh thermal overload
relays is ensured by a complex current calibration procedure performed
after each unit is at full operating temperature. Calibration is
performed at the largest and smallest current the overload can handle.
The accurate time/current characteristic curve obtained in this manner
guarantees reliable motor protection every time. |
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Sprecher +
Shuch overload relays
Superior Class 10 characteristics
Today's T-Frame motors have less copper and iron that the old
U-Frame motors that were popular when traditional Class 20 overload
relays were designed. For this reason, faster Class 10 overloads like
the CT Series have been recognized by many motor manufacturers as the
ideal type to assure optimum protection of "T" frame motors.
Protection from single phase conditions
A unique feature not found in traditional thermal overload relays
provides accelerated tripping under single phase conditions. This is
accomplished with a special "differential tripping"
mechanism built into CT7N. |
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KWIKstarters
Sprecher + Schuh offers a broad selection of pre-assembled or
"build-from-stock" starters housed in either a CUL-approved
Type 1, 12K enclosure or a UL-Approved Type 4, 4X, 12 enclosure. Built
for convenience, space savings and economy, KWIKstarters are
efficiently designed to use stock CA7 contactors and CT7K thermal
overload relays or the advanced CEP7 solid state overload. Contactor
and overload are either prewired and pre-mounted onto the enclosure's
built-in DIN-rail or may be ordered as separate components. Ample
knockouts and open terminals guarantee quick, no fuss wiring.
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KWIK starters are sized for most industrial applications
These starters control motors up to 25HP @ 460V (30HP @ 575V) in an
enclosure measuring only 187 x 90mm (7-3/8" x 3-1/2"). This
covers over 85% of industrial motor control applications in a very
compact package that can be mounted adjacent to or directly on
equipment.
Designed for simplicity
The enclosure for the KWIKstarter is designed for simplicity. The
START button mechanically interfaces with a special side mounted N.O.
auxiliary (Cat.# CA7-PA-H10) with minimal wiring. The STOP button also
mechanically interfaces with the N.C. contact on the overload relay,
providing STOP and RESET functions with no additional wiring.
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