The Kinetics model type SynchApp-C
motor field application system incorporates
solid state sensing of the motor field
characteristics for the application
of the field to the motor via heavy
industrial, mill duty, electro-mechanical
DC contactors operating in conjunction
with an AC motor starter.
The SynchApp-C, contactor applied
field system, can be used with excitation
power supplied from various sources
- General DC mill bus, shop power.
- Motor generator set.
- Constant potential rectifier
by Kinetics or other.
- Regulated rectifier by Kinetics
or exciter by other.
The ability to use existing DC power
sources, makes the SynchApp-C field
application panel the ideal product
selection when only the field application
portion of an excitation system is
being retro-fitted. When a new excitation
power source is also required, Kinetics
recommends selection of a Kinetics
regulated SVR rectifier and our SynchApp-SS
solid state field application system
for costing, delivery and technical
performance reasons. Please reference
"Complete excitation system Kinetics
SynchApp-SS" from the product
menu of this web site for more information.
The SynchApp-C incorporates solid
state controls for the sensing of
the motor rotor speed and applies
the DC power, provided from an external
source, at the optimum application
point using overlapping, mill duty
contactors. The SynchApp-C incorporates
the use of Kinetics’ KinetSync-SR
digital annunciation and logic control
module for continuous readout of circuit
operation and sequence. In the event
of a motor shutdown, the system trip
or fault is indicated on the KinetSync-SR
LED screen and recorded in the fault
history registry with a date and time
Motor field currents are monitored
throughout the starting, running and
shut-down sequences to provide continuous
protection and annunciation.
A typical SynchApp-C field application
panel system would include the following:
- Field application contactors
with overlapping contacts, 2 poles
normally open / 1 pole normally
- KinetSync-SR digital logic annunciation
and control module.
- Interposing relays for interface
with the motor starter relays or
- Discharge resistor grid for motor
starting & shutdown.
Kinetics Industries is the only manufacturer
in the United States to design and
manufacture the critical segments
required for a brush type motor excitation
system as a single source manufacturer.
Kinetics has the in-house design and
manufacturing capacity to:
- Fabricate enclosures and/or panels.
- Transformers manufactured up
to 2500 KVA and 15 KV class.
- Electronic circuitry.
- Power semi-conductor assemblies
and associated firing circuits.
- Software logic, control and annunciation.
- Unit testing using a synchronous
One source responsibility for an
excitation system is our goal. Kinetics
products are designed specifically
for synchronous motors. Our units
are not an adaptation or function
compromise using components designed
for another type of machine, such
a generator or motor drive. Synchronous
motors and the processes they drive,
have specific needs that Kinetics
has incorporated into the product
We are flexible! Kinetics can manufacture
a complete system but we are willing
to work with a customer to use existing
component sections, components provided
by "other" or components
sections manufactured by a competing
product (SPM or an exciter by other).
The segments of brush type excitation
synchronous motor are:
- AC motor starter.
- DC field power source (exciter)
- Field application panel –
- KinetSync-SR digital annunciation
and logic controller
- Discharge resistor grid.
- Stand alone enclosure or open
panels for mounting by other.
Kinetics’ philosophies of design
and manufacturing are applied in every
excitation system we build. We strive
to design and manufacture a product
that is low in maintenance, conservatively
rated, interactive with the production
system and provides annunciation and
diagnostic feedback that helps to
minimize troubleshooting downtown.
A focus point feature of the Kinetics
field application system is the "impending
pullout of synchronization protection".
By using signals from the AC motor
starter CT’s and PT’s,
Kinetics’ field application
logic circuitry senses that the motor
is pulling out of synchronization
and shuts the motor down, by tripping
the motor starter off line, before
the motor is pulled out of synchronization.
Pulling out of synchronization, while
the motor is under load, can cause
damage to the motor and produces significant
power system disruption.
The SynchApp-C field application
package is designed to operate in
conjunction with the AC motor starter
using control signals from the starter
CT’s & PT’s. The rider
signal burden required by the Kinetics
system to the CT’s & PT’s
is negligible. Kinetics can provide
a motor starter with the excitation
system as an available option.
Amortisseur or squirrel cage winding
service factor protection is provided
by a "dwell time lockout"
the prevents damage to the motor from
immediate attempted motor re-start
as a standard feature. The dwell time
interval is adjustable through the
operator keypad of the KinetSync-SR
The KinetSync-SR provides the following
protection and features:
- Continuous monitoring of motor
and field excitation system.
- Assurance of field discharge
- Motor start incomplete sequence
- Field loss protection.
- Motor pull-out-of-synchronization
- Locked rotor protection.
- Control voltage signal for field
application at the proper speed
and phase angle.
- Unit includes a ready-to-use
RS232 communications port.
- Touch pad parameter of operation
- Security code protection by touch
- For installations with a regulated
exciter: power factor monitoring
and vernier signal is provided for
interfacing with a regulated field
- Motor dwell time lockout function.
- Back lit LCD annunciation screen
for continuous display of motor
field amps, field volts, power factor
and motor operational status.
- System "problem" flashing
- LCD screen displays cause of
"fault" or system "problems"
- Trip history registry and date
- Laptop computer accessible through
the RS232 interface port.
- UL and ULC listed product.
From our years of working with industrial,
utility and OEM customers, a common
concern of installers and maintenance
people alike, is to install component
sections as quickly as possible and
minimize the possibility for interconnection
wiring errors. Kinetics is the only
manufacturer to offer factory manufactured,
electro-statically shielded, interconnection
cables with heavy industrial Molex
plugs for use with our KinetSync-SR
unit to the SynchApp-C field application
Kinetics’ factory test stand
includes a synchronous motor. All
Kinetics manufactured excitation systems
are tested via the brush type synchronous
motor within our testing facility.
Kinetics excitation system
optional features: (Partial list)
- Field forcing – common
to rolling mills
- Motor inching control –
common to ball & bar grinding
- Redundant / parallel system or
- Remote operation and annunciation
for un-manned motor rooms or facilities.
- Synchronous condenser operation.
- Non-standard voltages.
- "Low" RPM machines with
"large" field current
- Application environmental demands
such as "high" elevations
or elevated operating environments.
- AC motor starter.
- Kinetics factory start-up engineer
for unit commission and training.
- Units manufactured and tested
to CSA or UE standards.
- Kinetics will supply mechanically
interlocked contactors with overlapping
contacts, 2 normally open and 1
normally closed, mounted on a common
back-sheet for customer seeking
a retro-fit for obsolete contactor
Information needed for a
- Is a system section or an entire
- Industry / application of the
motor / type of load.
- Motor horsepower, line voltage,
field volts, field current.
- AC input voltage available for
- Discharge resistance value specified
by the motor manufacturer.
- Starting acceleration time to
- Motor starter relay coil type,
AC or DC.
- Enclosure, cell-in-cell or open
- Is it desirable to place operational
information / data onto a communication
network such as SCADA or MOD BUS?
- Application specific requests.