Download OnBoard Racking - Powell Industries

OnBoard RackingTM
POWLVAC® VACUUM CIRCUIT BREAKER RACKING OPTION FOR IMPROVED SAFETY
SAFETY FIRST
At Powell our primary goal is to the continued
development of safety-centered products for the
protection of personnel and assets. The OnBoard
Racking product epitomizes this goal.
Statistics indicate the manual racking of a circuit breaker
on and off the live bus carries one of the greatest
safety risks for operations personnel. Initiating breaker
commands outside of arc flash boundaries would
therefore minimize the likelihood for human harm in
those rare cases. Additionally, breaker maintenance
becomes more convenient when performed remotely,
without the use of hard-to-wear PPE, or when heavy
mechanical breaker attachments are required.
For those associated with the operation or maintenance
of PowlVac® equipment, OnBoard Racking is an optional
safety solution for maximizing productivity and process
uptime. The automated process simply affords greater
efficiency and safety for personnel.
HOW DOES IT WORK
Another Industry First by Powell
Integral to the PowlVac® Circuit Breaker
Improved Safety for Operators
Remote Control of Racking Process
Available Only From Powell
Field Retrofit Program Available
The PowlVac circuit breaker has been modified to
accommodate an integral electric racking motor
which rotates the racking shaft and moves the breaker
on or off the main bus. Once a remote command is
issued, the integral motor, breaker status contacts,
and cell mounted sensors report to the Sentry™
Control Unit which processes the requested control
function. The Sentry unit must be satisfied with all
mechanical, electrical, and logical conditions before
operation is initiated. A breaker door interlock, a motor
cut-off contact, and the racking motor current are all
coordinated to optimize safe operation.
There are four (4) control functions available for
each circuit breaker; rack-in, rack-out, trip, and close.
In addition, an “Emergency Rack Out” feature is
incorporated to quickly reverse the breaker travel when
required.
Powered by Safety®
“We are a large mining facility with many Powell substations on site. Arc flash is
a concern of ours and the incorporation of OnBoard Racking into our existing
equipment has greatly increased the safety benefits to our electrical staff.”
“The medium voltage switchgear on our offshore platform is
equipped with the OnBoard Racking system. We are now able
to perform breaker tasks remotely from our Power Control
Room which is safer and more efficient.”
PRODUCT FEATURES
LOCAL MONITORING
• The Sentry™ Control Unit is responsible for
processing the OnBoard Racking™ control commands.
A modular design allows the mix and match of other
application cards in the same chassis for perfect
combination of technologies for your application.
Local substation access
to OnBoard Racking
control typically utilizes a
PowlSmart 10” HMI housed
in a lockable, wall mounted
enclosure located outside
the arc flash boundary.
Intelligent operator control
decisions are facilitated by
a graphical one-diagram displaying individual circuit
breaker data.
• Sentry utilizes a combination of mechanical, electrical,
and logical interlocks to ensure proper equipment
operation and personnel safety. All operational
interlocks required by IEEE C37.20.2 are incorporated.
• Qualify for a new or extended warranty by upgrading
your existing PowlVac® circuit breakers with OnBoard
Racking™. Powell technicians will make all necessary
modifications and perform preventative maintenance
measures on your breakers.
FITTING YOUR EQUIPMENT
Designed for installation in one-high or two-high
medium voltage PowlVac switchgear for any of these
switchgear ratings:
HAND-HELD REMOTE CONTROLLER
An optional Hand-Held Remote Controller with 10 meter
corded lanyard can attach to the front of the Sentry
Control Unit with a quick quarter turn. It operates like a
breaker control station or mimic panel, but much more
informative.
PowlVac-AR®
(36”w)
25kA - 63kA
PowlVac®
(36”w)
25kA - 63kA
15kV*




38kV
through 2000A
through 2000A
Voltage Rating
5kV*
* field conversion to OnBoard Racking available
FOR MORE INFORMATION
Contact your local Powell sales representative or email
questions directly to [email protected].
8550 Mosley Road
Houston, Texas 77075
713.944.6900
The LED readout displays breaker status/warning
messages while the illuminated control buttons indicate
available control choices to the operator. This controller
allows the same control functions as the HMI interface
and is properly used when operator is outside arc flash
boundaries. It can be used in conjunction with the HMI
for an emergency backup control station.
Powered by Safety®
Publication No. 05039
Powell Electrical Systems, Inc.
You can upgrade to an industrial computer to integrate
OnBoard Racking with other substation IED’s such as
protective relays, power meters, or system reliability
devices like the Powell BriteSpot™ thermal monitoring
for the detection of hot spots on switchgear bus
components.
Powell Canada Inc.
53032 Range Road 263A
Acheson, Alberta T7X 5A5
780.948.3300
Powell (UK) Ltd.
Ripley Road
Bradford, West Yorkshire BD4 7EH
+44.(0).1274.734221
09/2014 v5
powellind.com
[email protected]
©2014 Powell Industries, Inc.. all rights reserved.