molded case circuit breakers - Eaton Canada

GENERAL INFORMATION
Brushless Type Synchronous Motor
Synchronous motors are available without
slip rings and are referred to as
”Brushless Synchronous Motors.“ Such
motors have rotors equipped with rectifier
and sensing circuits providing selfcontained
DC supplies for the rotor field.
The AC power to the rotor is supplied
from alternator armatures or through rotary
transformers (shaft driven). Rotor
field currents are adjusted by proportional
values in the stationary excitation windings.
The rotor circuits contain means for
static switching of discharge resistor and
excitation power at preset speed-slip angle
points. Thus brushless motors provide
self-contained excitation sources and
automatic field application.
Selection Guide — Brushless Type Control
Catalog
Number
14-100
Field application
panel only
14-200, 14-203,
14-204, 14-206,
14-600, 14-603,
14-604, 14-606
S/V F02,
S/V R02,
S/V A02
March 2001
Primary
3-Phase
Voltage
208-600
2300-7200
2300-15000
208-600
2300-7200
2300-15000
SYNCHRONOUS MOTOR CONTROL
Selection Guide for Brushless Type Motors
Relay Type Solid-State
Type —
Mark V
with Static Exciter
with VAR/PF/DC
Current Field Regulator
Brushless Type Control
This type of control consists basically of
the following:
A. Field contactor
B. Power factor relay
C. Timing relay to block the power factor
relay from tripping during start
D. Damper winding relay to protect the
motor in the event that it fails to start
or accelerate
E. Constant voltage transformer which
allows the motor to respond to
momentary drops in line voltage
F. Full wave bridge rectifier that provides
DC for the motor exciter field
Page
Number
this
Publication
or Price
List
190, 191
190, 191
190, 191
192
192
192
Synchronous
Instructions
IL 17097
IL 17097
IL 17097
IL 17224, IL 17381
IL 17381, IL 17224
IL 17224, IL 17381
Comments
183
Primary control
existing or supplied
by others. Primary
control may be
low-voltage motor
starter, FV or RV or
medium-voltage
motor starter, FV or
RV or circuit breaker
motor control
208-600 ➊ IL 17097 Primary control
consists of
low-voltage,
full-voltage, or
reduced-voltage
motor starter —
combination
or non-combination
type
2400-7200 PL 8810 IL 17097 (Relay)
IL 17381 (S-State)
IL 17224 (S-State)
IB 48008
IB 48009
➊ Contact your local Cutler-Hammer Field Sales Office.
G. Volt cap for protecting the rectifier
from voltage spikes
H. Auto-transformer (powerstat) to adjust
the voltage to the motor exciter field
I. DC field ammeter.
Ratings:
Low Voltage – 600V max.
Medium Voltage – 7200V max.
High Voltage – 15,000V max.
Chronology:
Synchronous control was introduced
in 1947 at Buffalo General Control. The
product moved with General Control to
Asheville, NC in 1978 where it is currently
manufactured.
Primary control
consists of an
AMPGARD type
medium-voltage,
full-voltage
motor starter —
full-voltage or
reduced-voltage
type
M