molded case circuit breakers - Eaton Canada

176
SOLID-STATE LOW VOLTAGE MOTOR CONTROL
Reduced Voltage Motor Starters
PRODUCT DESCRIPTION
Easy Start Reduced Voltage Solid-State Motor
Starter Motor Control Center Plug-in Unit
PRODUCT HISTORY
Culter-Hammer’s present line of reduced
voltage starters is the culmination of 38
years of product development. In 1958,
Vectrol Engineering began manufacturing
SCR Gate Driver circuitry and progressed
into their own soft starter product line,
known as the Vectrol Motor Starter (VMS).
In 1980, Vectrol was purchased by Westinghouse.
The VMS was quickly phased
out of production and the Vectrol ES (Energy
Saver) solid-state reduced voltage starter
was introduced. The Vectrol ES
combined features of automatic power
PRODUCT HISTORY TIMELINE
Reduced voltage solid-state motor starters
serve to provide reduced voltage starting,
protection, and control for standard
three-phase induction motors. They are
commonly found in applications like
conveyors, compressors, extruders,
pumps, blowers, etc.
Reduced voltage starting is beneficial
because current and torque are reduced
during the motor starting process. This
reduces the electrical and mechanical
shock experienced during motor starting,
prolonging motor and equipment life.
Reduced voltage starters also provide for
maximum efficiency of the motor duty
cycle by electronically sensing the motor
load and reducing the voltage applied to
the motor when it is running at less than
full load torque.
factor adjustment and reduced voltage,
maximizing the efficiency of the motor duty
cycle. The Vectrol ES starter was actively
manufactured until 1988 when the Easy-
Start Motor Starter was introduced.
Cutler-Hammer entered the market in 1975
with the A415, A445, and A485 product
lines. By 1983, Cutler-Hammer had released
the A515/A545 Model A Solid-State Reduced
Voltage Starter and followed up in
late 1984 with the improved Model B A515.
This starter utilized a solid-state controller,
Solid-state motor starters also provide
short circuit and various types of electronic
protective functions. Common features
include phase loss, undervoltage,
current balance, phase rotation, current
limit, over temperature, etc.
Reduced voltage solid-state controllers
are similar to reduced voltage motor starters,
except they include no overload or
short-circuit protection. Motor controllers
are applied in series with conventional
electromechanical starters to provide the
benefits of reduced voltage starting at
lower cost. Electromechanical starter
contact life is also improved by the
reduced voltage motor controller.
overload relay, and a six SCR full-wave
power section. In 1988, Westinghouse introduced
its Easy Start and Easy Start Jr.
product lines that also utilized a solidstate
control circuit and a six SCR fullwave
power section. In 1995, the newly
formed Solid-State Motor Control Division
(SSMC) of the new Cutler-Hammer
released the Easy Start EA
Reduced Voltage Starter, combining the
voltage control of SCRs with the durability
of the ADVANTAGE motor starter into a
uniquely small package.
Product
Cutler-Hammer A415/A445/A485
Westinghouse Vectrol VMS
Westinghouse Vectrol Energy Saver
Westinghouse Vectrol Startrol
Westinghouse Vectrol Startrol
Power Miser
Cutler-Hammer A515/A545 Model A
Westinghouse Power Miser 2
Cutler-Hammer A515/A545 Model B
Westinghouse Easy-Start
Westinghouse Easy-Start 120 ]
Cutler-Hammer Easy-Start ES
Westinghouse Power Miser 2, Model 3
Cutler-Hammer C514
Cutler-Hammer Easy-Start EC ]
Westinghouse Easy-Start Jr.
Westinghouse Easy-Start 100 ]
Cutler-Hammer Easy-Start EJ
Cutler-Hammer Easy-Start EA
Intelligent Technologies 5801
Intelligent Technologies 5701
1975 1980 1985 1990 1995 2000 Present
March 2001